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Appendix B
Fosroc (SIKA NZ) Technical Data Sheets
Conbextra GP
Conbextra UW
Nitobond AR/HAR
Nitoprime Zincrich
Spencer Holmes Ltd September 2006 E060527
Conbextra GP
General purpose non-shrink cementitious grout
Uses
Conbextra GP has been formulated for general purpose grouting over a wide range of applications including heavy duty support beneath machine base plates, crane rails and stanchion bases. It is also an excellent anchoring grout for masts, anchor bolts, reinforcing bars, Reidbar Grout Sleeves, Drossbach tubes, etc.
Advantages
Ill Gaseous expansion system compensates for shrinkage and settlement in the plastic state.
1111 High early and ultimate strength ensure long term performance in service.
1111 Iron-free.
Ill Chloride-free.
1111 Pre-packaged needing only on site addition of water.
Description
Conbextra GP is supplied as a ready to use powder requiring only the addition of water to produce a free-flowing non-shrink grout for gap widths of 20-150 mm. Conbextra GP is a Class A Grout.
The material is a blend of cement, pre-graded fillers and additives which impart controlled expansion in the plastic state whilst minimising water demand. The low water requirement ensures high early strength and long term durability. The filler grading is designed to aid uniform mixing an-d minimise segregation and bleeding.
Technical support
Fosroc offers a comprehensive range of high performance, high quality repair, maintenance and construction products. In addition, Fosroc offers a technical support package to specifiers, end users and contractors, as well as on site technical assistance in locations all over the world.
Durability
Conbextra GP exceeds the 50 year minimum requirements of the durability provisions of the New Zealand Building Regulations 1992 Clause B2 providing:
(a) It is used in strict accordance with the manufacturer's recommendations.
(b) It is used within the design parameters stated in this data sheet.
(c) It is used in conjunction with other approved building systems and materials.
For conditions outside those stated in this data sheet, contact our Technical Advisory Service;
constructive solutions
Fosroc reserves the right to modify this time period, depending on but not limited to, climatic, site and environmental conditions such as chemical attack, abrasion, water immersion and adverse climatic and temperature conditions.
Limitations
Conbextra GP is designed as a grout only. It must not be used in any other application or situation.
Not for use in unconstrained areas.
Mixing ratios, methods, cure times and temperatures are critical to its performance.
Not for use in stressing cable ducts; use Conbextra HF for these purposes.
Conbextra GP is recommended for use only as described in the Uses section of this datasheet.
Properties
Compressive strength: Tested in accordance with BS1881
Variation with consistency at 20°C:
Age (days) Compressive strength N/mm2
Flowable Trowellable
7 14 28
26 55 60 64
55 70 76 81
Variation with temperature at flowable consistency:
Age (days) Compressive strength N/mm2
7 14 28
5°C 6
50 55 60
20°c 35°C
26 34 55 60
60 62
64 65
Flexural strength: For flowable consistency at 20°C, tested in accordance with BS4551
Age (days) Flexural strength N/mm2
2.5 7 9.0
14 9.5 28 10.0
Coefficient of thermal expansion: 11 x 10-s;oc
Conbextra GP
Thermal conductivity:
Young's modulus:
Fresh wet density:
Expansion characteristics:
Time for expansion:
Pressure to restrain plastic expansion:
1.5 W/m°C
29GPa
The fresh wet density when used
at flowable consistency is approximately 2170 kg/m3
An expansion of 1-4% overcomes
plastic settlement in the unset
material.
Start 15 mins
Finish 2 hours
Temperatures above 20°c may
slightly reduce these times.
Approximately 0.004 N/mm2 .
Note: Fosroc's Technical Advisory Service should be
consulted if more detailed information on the test methods and
physical properties of Conbextra GP is required.
Specification clauses
Performance Specification
All grouting (specify details and areas of application) must be
carried out with a prepackaged cement based product which shall be mixed with water on site to the required consistency.
The grout must not bleed or segregate, must be iron-free and
chloride-free. Expansion of 1-4% shall occur while the grout is
plastic by means of a gaseous system. The compressive strength of the grout must exceed 40 MPa at 7 days and 60
MPa at 28 days. The grout must be stored, handled and placed strictly in accordance with the manufacturer's
instructions.
Instructions for use
Preparation
Underplate grouting: Reference should be made to the design table (Table I) when determining the flow distance based on the gap width and fluid head. These should be
designed to ensure that the grout will flow through the gap as a continuous front.
The unrestrained surface area of the grout must be kept to a
minimum. Generally the gap width between the perimeter
formwork and the plate edge should not exceed I 50 mm on the pouring side and 50 mm on the opposite side.
The formwork should be constructed to be leakproof as
Conbextra GP is a free flowing grout. This can be achieved by
using foam rubber strip or mastic sealant beneath the
constructed formwork and between joints.
In some cases it is practical to use a sacrificial semi-dry sand
and cement formwork. The formwork should include outlets
for the pre-soaking water.
Table I. Max. Flow distance m mm
Grout Gap width 50mm 100mm 250mm
Consistency mm head head head
Flowable 20 200 950 1000
30 350 1500 2300
40 600 220 3000
50 900 3000 3000+
N.B: This table is based on the following factors:
- A temperature of 20°c.
- A minimum gap width of 20 mm.
- A water saturated substrate.
- A minimum unrestricted flow width of 300 mm.
Foundation surface: This must be free from oil, grease, or any loosely adherent material. If the concrete surface is
defective or has laitance, it must be cut back to a sound base. Bolt holes or fixing pockets must be blown clean of any dirt or
debris.
Base Plate: This must be clean and free from oil, grease or scale. Provide air pressure relief holes to allow venting of any
isolated high spots.
Levelling Shims: If these are to be removed after the grout has hardened, treat them with a layer of grease.
Pre-soaking: Several hours prior to grouting the area the cleaned foundation should be flooded with fresh water.
Immediately prior to grouting remove any free water. Care should be taken to blow out all bolt holes and pockets.
Mixing
Do not mix part bags.
The quantity of water required to achieve the desired consistency is precise, and the volume used should be in
accordance with the table below.
Desired mix consistency
Dry pack
Plastic
Flowable
Water in litres per 25 kg bag
2.25-2.75
4 5
Water percentage by weight required
9 i6 20
For best results a mechanically powered grout mixer should be
used. For quantities up to 50 kg a slow speed drill fitted with a
Fosroc No. 4 Mixing Paddle (Galvanised steel spiral paddle) is
suitable. Larger quantities will require a high shear vane mixer.
The need to observe the accurate gauging of water addition
and the stated mixing time should be stressed to all operators.
The selected water content should be accurately measured
into the mixer. Slowly add the total contents of the Conbextra
GP pack and mix continuously for 5 minutes ensuring a smooth even consistency.
Pass the mixed grout through a 5 mm sieve to remove any lumps prior to placing.
Application Temperature Limitations
Cold Weather Grouting - Normal precautions for winter
working with cementitious material should be adopted. The
temperature of the grout and all elements coming into contact with it should be above the lower application temperature limit
of 5°C. Below this limit it is essential to condition the water, powders and substrate to raise the temperature (ideally to 20°C) before applying the grout.
Hot Weather Grouting - Conbextra GP must not be applied under hot windy conditions where premature setting and
drying out is likely to occur. Adequate protection by wind shields, saturation cooling of the substrate and storage
conditioning of the powder and gauge water must be provided to lower the temperature to below the upper application
temperature limit of 28°C. This will assist in ensuring proper
grout functioning under these conditions.
Placing
Place the grout within 20 minutes of mixing to gain the full
benefit of the expansion process.
Conbextra GP may be placed in thicknesses up to 150 mm
in a single pour when used as an underplate grout. For thicker sections it is necessary to fill out Conbextra GP with well graded 10 mm silt and sand free aggregates to
minimise temperature rise. The quantity of aggregate should
not exceed 1 part aggregate to 1 part Conbextra GP by weight. For such mixes a conventional concrete mixer and
pump should be used. Consult Fosroc Technical Advisory Service for further details.
Continuous grout flow is essential. Sufficient grout must be available prior to starting and the time taken to pour a batch
must be regulated to the time taken to prepare the next one.
Pouring should be from one side of the void to eliminate the
entrapment of air or surplus pre-soaking water. The grout
head must be maintained at all times so that a continuous grout front is achieved.
Where large volumes have to be placed Conbextra GP may be
pumped. A heavy duty diaphragm pump is recommended for this purpose.
constructive solutions
Cleaning
Conbextra GP should be removed from tools and equipment
immediately after use with clean water. Cured material can be removed mechanically or with an acid etch solution.
Specific Applications
Grouting under base plates: Use flowable consistency.
Grouting anchor bolts: Use trowellable consistency.
Grouting large volumes: For sections thicker than 150 mm it is necessary to fill out the Conbextra GP with equal parts by
weight of well graded 10 mm silt and sand free aggregate to
minimise temperature rise. Consult Fosroc Technical Advisory Service for further details.
Estimating
Packaging
Conbextra GP is supplied in 25 kg moisture resistant, multi-ply bags.
Yield
This depends on the required consistency. The approximate yield per 25 kg bag at each consistency is as follows:
Consistency Dry Pack Trowellable Flowable
Yield per 25 kg
bag (litres) 12 13.75 14
Yield (kg/m3) 2100 1825 1775
Yield (no. of 25 bags per m3) 84 73 71
Allowance should be made for wastage when estimating.
Storage
Conbextra GP has a shelf life of 12 months if kept in a dry
store in sealed bags. If stored in high temperature and high
humidity locations the shelf life may be reduced.
If subjected to extended storage or if there is any doubt about the conditions of storage and handling, a preliminary test
application must be made to ensure that the grout has not
been subjected to deteriorating influences which may cause malfunctioning.
Conbextra GP
Health and safety
Warning
Conbextra GP may be harmful if swallowed or inhaled and
may cause skin or eye irritation. It contains cement powder which when wet is alkaline and can cause burns to the skin
and respiratory tract.
Precautions
Disposal
If spilt, absorb with clay, sand or earth. Collect and seal in
properly labelled metal containers. Dispose of according to
local authority regulations. Do not dispose of down drains or
into local waterways.
Fire
Conbextra GP is non-flammable.
Wear an approved dust mask, PVC gloves and eye protection when mixing or using.
Additional information
Fuller details on each of the products mentioned are available
on the product Material Safety Data Sheets. To ensure no
harm is caused to persons using Fosroc products, it is recommended that the appropriate Material Safety Data
Sheets are read by all concerned. Contact Fosroc for copies.
First Aid
Swallowed: Do not induce vomiting, give a glass of water to
dilute and contact a doctor immediately.
Skin: Remove contaminated clothing, wash skin with warm soapy water. Do not scrub.
Inhaled: Remove person to fresh air. Get medical advice if breathing becomes difficult.
Eyes: Hold eyes open and flood with water for at least ~ 5
minutes. Get medical advice.
For emergency information contact the National Poisons Information Centre, phone 0800 764 766 (0800 POISON).
Important note
Conbextra GP is one product in the Fosroc range of grouts. Other product ranges include concrete surface treatments,
concrete repair and protection, below ground waterproofing,
joint sealants, flooring, roofing, adhesives and architectural coatings.
Conbextra GP is the trademark of Fosroc International Limited.
Fosroc products are guaranteed against defective materials and manufacture and are sold subject to the company's terms and conditions of sale, a copy of which may be obtained on request. Whilst Fosroc endeavours to ensure that this technical information is correct at the time of printing, it is the customer's responsibility to satisfy themselves by checking with the compay that this information is still accurate at the time of use, that the product is suitable for the intended application, and that the actual conditions of use are in accordance with those recommended. Because Fosroc has no control over the conditions
Fosroc Limited Head Office and Factory 69 Waione Street Petone, Lower Hutt PO Box 38 079 Wellington MC 6332 Tel +64 4 568 8046 Fax +64 4 568 8043 Email [email protected]
www.fosroc.com
of use of its products, all recommendations or suggestions regarding the use of these products are made without guarantee.
Auckland Regional Office 4 Hotunui Drive Mt Wellington, Auckland PO Box494 Auckland 1250 Tel +64 9 273 9292 Fax +64 9 273 9393
Wellington Regional Office 69 Waione Street Petone, Lower Hutt PO Box 38 079 Wellington MC 6332 Tel +64 4 568 7965 Fax +64 4 568 5326
Technical Advisory Service Hotline - Fax 04 568 8476
Christchurch Regional Office 28 Byron Street Sydenham, Christchurch PO Box4190 Christchurch Tel +64 3 366 8194 Fax +64 3 379 4624
June 2000
NZ/C7/04
Conbextra UW
Non-shrink cementitious grout for underwater applications
Uses
Conbextra UW has been formulated for use in free flow or
pumped grouting applications underwater or in tidal zones. There will be no significant 'wash-out' of the cement phase.
Applications include bridge columns, quay pillars, concrete piling, slipways and dams.
Advantages
1111 No risk of significant 'wash-out' of cement phase when
placed underwater.
1111 Displaces water effectively.
Ill Gaseous expansion system compensates for shrinkage
and settlement in the plastic state.
1111 High early and ultimate strength and exceptional
resistance to freeze-thaw cycling ensure durability of the
hardened grout.
1111 Chloride free.
1111 Packed needing only on site addition of water.
Description
Conbextra UW is supplied as a ready to use dry powder requiring only the addition of water to produce a free flowing,
non shrink grout. Conbextra UW exhibits exceptional resistance to 'washing-out' of the cement phase when placed
in stationary or moving water. The material is a mixture of specifically processed cement with carefully graded fine
aggregates. Additives impart controlled expansion, water reduction and non 'wash-out' characteristics. The aggregate
grading is designed to aid uniform mixing, minimise
segregation and bleeding whilst assisting the flow characteristics.
Technical support
Fosroc offers a comprehensive range of high performance,
high quality repair, maintenance and construction products. In addition, Fosroc offers a technical support package to
specifiers, end users and contractors, as well as on site technical assistance in locations all over the world.
Durability
Conbextra UW exceeds the 50 year minimum requirements of the durability provisions of the New Zealand Building
Regulations 1992 Clause 82 providing:
(a) It is used in strict accordance with the manufacturer's
recommendations.
(b) It is used within the design parameters stated in this data
sheet.
(c) It is used in conjunction with other approved building
systems and materials.
constructive solutions
For conditions outside those stated in this data sheet, contact
our Technical Advisory Service.
Fosroc reserves the right to modify this time period, depending
on but not limited to, climatic, site and environmental conditions
such as chemical attack, abrasion, water immersion and
adverse climatic and temperature conditions.
Limitations
This product is designed as a grout only. It must not be used in any other application or situation.
Not for use in unconstrained areas.
Mixing ratios, methods, cure times and temperatures are
critical to its performance.
Conbextra UW is recommended for use only as described in
the Uses section of this datasheet.
Properties
Compressive strength: To simulate site conditions, compressive strength test cubes
were cast under water and under restraint.
Compressive strength N/mm2
Grout Temperature
1 day
3 days 7 days
28 days
Adhesion to submerged concrete:
Coefficient of thermal expansion:
Density of hardened grout:
20°C 5°C
25 38 44 53
6 24 36 50
To simulate site conditions,
direct tensile specimens were prepared under water and under
restraint. The specimens were
cured submerged for 14 days at 20°c at time of test. The tensile strength of the substrate
concrete was 3.1 N/mm2 • Direct tensile bond strength was
2.1 N/mm2 •
11 x 10-6/°C
2050 kg/m3
Conbextra UW
Setting time: Dependent on temperature. Typical values are as follows:
Grout setting time (to BS5075)
Initial Final
Temperature limitation:
Freeze-thaw stability:
Expansion characteristics:
Pressure to restrain expansion:
Specification
Performance specification
Temperature 20°C 5°C
4.5 hrs 5.5 hrs
12 hrs 16.5 hrs
Should not be applied below 3°C
Meets the requirements of BS5075, Part 2, 1982
Controlled expansion occurs in the unset material to ensure that the grout, when cured, will continue to occupy its original volume within the confines of the void in which it is placed.
Approx 0.004 N/mm2
All grouting (specify details and areas of applications) must be carried out with a pre-packaged cement based product, which shall be mixed with water on site at a water/powder ratio of 0.22. The grout shall contain special admixtures to minimise washout in underwater applications. The compressive strength of the grout must exceed 30 N/mm2 at 7 days and 50 N/mm2 at 28 days. The grout must be stored, handled and placed strictly in accordance with the manufacturer's instructions.
Application instructions
Preparation
The substrate must be clean and sound. All loose material must be removed. Substrates which are permanently immersed should be sandblasted or cleaned with a high pressure water jet. Non-immersed or intermittently immersed substrates can also be prepared using these techniques. Depending on the circumstances, scabbling or needle hammering may be appropriate.
In view of the fluid nature of Conbextra UW, all shuttering must be grout-tight. This can be achieved using foam rubber sealing strips at the edges. Grout should not be applied below 3°C.
Mixing
The quantity of water required to achieve a fluid consistency must be accurately measured for each mix. Each 25 kg bag requires 5.5 litres of water.
A mechanical powered grout mixer MUST be used with a Fosroc No. 4 Mixing Paddle (galvanised steel spiral paddle). Ensure that the machine capacity and the number of operators is adequate to enable grouting to be carried out as a continuous operation.
Place the specified amount of water in the mixer. Slowly add the contents of the Conbextra UW pack mixing continuously. When all contents are added, mix continuously for a minimum of 5 minutes making sure that a smooth even mix is obtained. (Fluidity increases with increased mixing.) Pass the mixed grout through a 5 mm sieve to remove any lumps prior to placing.
Important: The need to observe the accurate gauging of water addition and the stated mixing time should be stressed to all operators and, wherever possible, included in specifications.
Application
Place the grout within 20 minutes of mixing to gain full benefit of the expansion process. Continuous grout flow is required and the grout should be poured or pumped through a flexible tube, minimum diameter 50 mm, to the lowest point in the form. At the start of the operation the grout flow should be restricted in order to avoid any water entrapment.
The bottom of the tube may be raised as necessary to reduce any back pressure but should not be raised above the level of the grout.
Application thickness
Conbextra UW may be placed in thicknesses up to 100 mm in one pour when placed above water. When placed under water the heat sink effect in this environment permits thicknesses up to 180 mm to be placed. For thicker sections up to 250 mm above water and 450 mm under water, it is necessary to 1111 out Conbextra UW using a clean, rounded and well graded aggregate in the size range 2 mm up to 10 mm. The quantity of aggregate added should not exceed 1 part aggregate to 1 part Conbextra UW by weight. For such mixes a concrete mixer must be used. Unrestrained surface area should be kept to a minimum.
Curing
Curing will not be required in intermittently or totally submerged conditions. However, when cast above water, all exposed surfaces should be thoroughly cured.
Cleaning
Because of Conbextra UW's water resisting properties,
equipment used will be harder to wash than with a cementitious grout. Use of hot water greatly reduces the time
required for cleaning. DO NOT USE hot water for mixing with
Conbextra UW.
Estimating
Packaging
Conbextra UW is supplied in 25 kg moisture resistant,
multi-ply bags.
Yield
Yield (per 25 kg bag): 14.5 litres
Allowance should be made for wastage when estimating.
Storage
Conbextra UW has a shelf life of 12 months if kept in a dry store in sealed bags. If stored in high temperature and high
humidity locations shelf life may be reduced. If subject to
extended storage, and/or if there is any doubt about the conditions of storage and handling, a preliminary test
application must be made to ensure that the grout has not been subject to deteriorating influences causing malfunctioning.
Health and safety
Warning
Conbextra UW may be harmful if swallowed or inhaled and
may cause skin or eye irritation. It contains cement powder
which when wet is alkaline and can cause burns to the skin and respiratory tract.
Precautions
Wear an approved dust mask, PVC gloves and eye protection
when mixing or using.
Fuller details on each of the products mentioned are available
on the product Material Safety Data Sheets. To ensure no
harm is caused to persons using Fosroc products, it is
recommended that the appropriate Material Safety Data Sheets are read by all concerned. Contact Fosroc for copies.
First Aid
Swallowed: Do not induce vomiting, give a glass of water to
dilute and contact a doctor immediately.
Skin: Remove contaminated clothing, wash with warm soapy
water. Do not scrub.
Inhaled: Remove person to fresh air. Get medical advice if
breathing becomes difficult.
Eyes: Hold open and flood with water for at least 15 minutes. Get medical advice.
constructive solutions
For emergency information contact the National Poisons
Information Centre, phone 0800 764 766 (0800 POISON).
Disposal
Dispose of according to local authority regulations. Do not dispose of down drains or into local waterways.
Fire
Conbextra UW is non-flammable.
Additional information
Conbextra UW is one product in the Fosroc range of grouts
and anchors. other product ranges include admixtures, surface treatments, concrete repair and protection, joint
sealants, waterproofing, flooring, roofing, adhesives and architectural coatings.
Conbextra UW
Fosroc Limited Head Office and Factory 69 Waione Street Petone, Lower Hutt PO Box 38 079 Wellington MC 6332 Tel +64 4 568 8046 Fax +64 4 568 8043 Email [email protected]
www.fosroc.com
Conbextra UW is the trademark of Fosroc International Limited.
Important note Fosroc products are guaranteed against defective materials and manufacture and are sold subject to the company's terms and conditions of sale, a copy of which may be obtained on request. Whilst Fosroc endeavours to ensure that this technical information is correct at the time of printing, it is the customer's responsibility to satisfy themselves by checking with the compay that this infonnation is still accurate at the time of use, that the product is suitable for the intended application, and that the actual conditions of use are in accordance with those recommended. Because Fosroc has no control over the conditions of use of its products, all recommendations or suggestions regarding the use of these products are made without guarantee.
Auckland Regional Office 4 Hotunui Drive Mt Wellington, Auckland PO Box494 Auckland 1250 Tel +64 9 273 9292 Fax +64 9 273 9393
Wellington Regional Office 69 Waione Street Petone, Lower Hutt PO Box 38 079 Wellington MC 6332 Tel +64 4 568 7965 Fax +64 4 568 5326
Technical Advisory Service Hotline - Fax 04 568 8476
Christchurch Regiorial Office 28 Byron Street Sydenham, Christchurch PO Box4190 Christchurch Tel +64 3 366 8194 Fax +64 3 379 4624
April 2000
NZ/C14/05
Nitobond AR/HAR
Single component concrete repair primers
Uses
Nitobond AR and Nitobond HAR are recommended primers
for the Fosroc Concrete Repair System.
Specifically, Nitobond AR is to be used with Fosroc's rapid
set high strength cementitious concrete repair compound, Patchroc C.
Nitobond HAR is designed specifically for use with Renderoc
HB25 and Renderoc HB40, Fosroc's high build, polymer
modified repair mortars for overhead and vertical repairs.
Advantages
11111 Single component - no mixing required on site.
11111 Easy to use - ready to use as supplied straight from the
container.
1!111 High bond strength - excellent bond strength between polymer modified mortars and concrete.
II Excellent grab - Nitobond HAR is specifically designed for optimum build of Renderoc HB25 and Renderoc HB40 in vertical and overhead applications.
1111 Versatile - easy to use on site. Suitable for both internal and external use.
1111 Curing aids - can be used as curing membranes for Fosroc's Renderoc range.
Description
Nitobond AR and Nitobond HAR are single component white, milky emulsions based upon modified acrylic type resins.
Nitobond AR is designed for use with Patchroc C.
Nitobond HAR is designed for use with Renderoc HB25 and Renderoc HB40.
Both products are resistant to hydrolysis and therefore can
be used in external or internal applications. For permanently
immersed conditions consult Fosroc's Technical Advisory Service.
Technical support
Fosroc offers a comprehensive range of high performance, high quality repair, maintenance and construction products.
In addition, Fosroc offers a technical support package to
specifiers, end users and contractors, as well as on site
technical assistance in locations all over the world.
IL.imitations
Do not use Nitobond AR/HAR when the temperature is below
5°C or 5°C and falling.
Nitobond AR and Nitobond HAR are only recommended for
use as described in the Uses section of this data sheet.
constructive solutions
Properties
The curing efficiency of Nitobond AR and Nitobond HAR was measured to DOT Clause 2709 modified to include mortar
pre-drying period.
Nitobond AR: Nitobond HAR:
58% curing efficiency 63% curing efficiency
Instructions for use
Nitobond AR and HAR are integral parts of the Fosroc
Concrete Repair System.
As a bonding agent:
Nitobond AR and HAR are both supplied ready for use. Do
not dilute with water or solvents of any kind. Pour liquid into a suitable container ready for application onto previously
prepared substrate.
Successful repairs to reinforced concrete depend on the
correct surface preparation. Mechanically remove all contaminated, loose, or damaged concrete as required.
Expose the full circumference of any corroded reinforcing steel. It is recommended that all repair areas should be
defined by a 10 mm saw cut to avoid 'feather edging' of the
repair mortars. All fine, loose debris should be removed by
oil-free compressed air.
Finally, pre-soak the repair zone with copious amounts of
clean water preferably for a minimum of 1 hour prior to
application of the Nitobond AR and Nitobond HAR. Remove excess surface water with a stiff brush.
Nitobond AR and HAR are simply applied by brush ensuring
the complete surface is wetted out. Use of a 'stippling' action rather than a 'painting' action is recommended. Patchroc C,
Renderoc HB25 and Renderoc HB40 should be applied
whilst the primer is wet or tacky.
Surfaces that have dried out can be reprimed once.
Warning: DO NOT over apply Nitobond HAR as slippage of
the repair mortar may occur in high build applications.
As a curing aid:
Nitobond AR can be spray applied as a curing aid to
Renderoc repair mortars giving a curing efficiency of
approximately 58% when tested in accordance with DOT Clause 2709 to include mortar pre-drying period. Nitobond
HAR can only be applied by brush. In both cases it is
important to ensure that a continuous film is applied.
In harsh drying conditions additional curing precautions such as wet hessian, polythene or ponding should be used.
Nitobond AR and Nitobond HAR can be overcoated by
Fosroc Dekguard, the anti chloride, anti carbonation coating
system which completes the Fosroc Concrete Repair System.
Nitobond AR/HAR
Cleaning
Wash all brushes and equipment with clean water.
Estimating
Packaging
Nitobond AR and Nitobond HAR are supplied in 1 litre and 5 litre containers.
Coverage
As a bonding agent:
As a curing aid:
Storage
Nitobond AR: Nitobond HAR:
6-8 m2/litre 3-4 m2/litre
Coverage rates for both products will be dependent on substrate.
Nitobond AR: 4-5 m2/litre Nitobond HAR: 4-5 m2/litre
The shelf life of both Nitobond AR and Nitobond HAR is 12 months if stored at 20°c.
Protect from frost. Do not use iffrozen, discard and do not attempt to thaw.
Health and safety
Warning
Nitobond AR and HAR are slightly alkaline, avoid contact with the skin and eyes.
Precautions
Wear protective PVC gloves and eye protection when using.
Important note
Fuller details on each of the products mentioned are available on the product Material Safety Data Sheets. To ensure no harm is caused to persons using Fosroc products, it is recommended that the appropriate Material Safety Data Sheets are read by all concerned. Contact Fosroc for copies.
First Aid
Swallowed: Do not induce vomiting, give a glass of water to dilute and contact a doctor immediately.
Skin: Remove contaminated clothing, wash with warm soapy water. Do not scrub.
Eyes: Hold open and flood with water for at least 15 minutes. Get medical advice.
For emergency information contact the National Poisons Information Centre, phone 0800 764 766 (0800 POISON).
Disposal
If spilt, absorb with clay, sand or earth. Collect and seal in properly labelled metal containers. Dispose of according to local authority regulations. Do not dispose of down drains or into local waterways.
Additional information
Nitobond AR and Nitobond HAR are two products in the Fosroc range of concrete repair and protection. Other product ranges include admixtures, concrete surface treatments, waterproofing, grouts, sealants, roofing, flooring, adhesives and architectural coatings.
Nitobond AR and Nitobond HAR are the trademarks of Fosroc International Limited.
Fosroc products are guaranteed against defective materials and manufacture and are sold subject to the company's terms and conditions of sale, a copy of which may be obtained on request. Whilst Fosroc endeavours to ensure that this technical information is correct at the time of printing, it is the customer's responsibility to satisfy themselves by checking with the compay that this information is still accurate atthe time of use, that the productis suitable for the intended application, and that the actual conditions of use are in accordance with those recommended. Because Fosroc has no control over the conditions
Fosroc Limited Head Office and Factory 69 Waione Street Petone, Lower Hutt PO Box38 079 Wellington MC 6332 Tel +64 4 568 8046 Fax +64 4 568 8043 Email [email protected]
www.fosroc.com
of use of its products, all recommendations or suggestions regarding the use of these products are made without guarantee.
Auckland Regional Office 4 Hotunui Drive Mt Wellington, Auckland PO Box494 Auckland 1250 Tel +64 9 273 9292 Fax +64 9 273 9393
Wellington Regional Office 69 Waione Street Petone, Lower Hutt PO Box38 079 Wellington MC 6332 Tel +64 4 568 7965 Fax +64 4 568 5326
Technical Advisory Service Hotline - Fax 04 568 8476
Christchurch Regional Office 28 Byron Street Sydenham, Christchurch PO Box4190 Christchurch Tel +64 3 366 8194 Fax +64 3 379 4624
November 1998 NZ/N3/04
Nitoprime Zincrich
Zinc based anti-corrosion primer
Uses
Nitoprime Zincrich has been formulated for use as the anti-corrosion primer for steel reinforcement in the Fosroc
Concrete Repair System.
Nitoprime Zincrich actively resists corrosion in the repaired
area, and also aids the prevention of corrosion in adjacent areas.
Nitoprime Zincrich can also be used for coating steel gutters,
downpipes, roofing, etc, to prated against rust, and when
repairing wrought iron, steel window frames, or steel fretwork. It can be used as either a primer for decorative paints or a
self-finish. See Limitations.
Nitoprime Zincrich can also be used as a touch up primer for galvanised high voltage transmission towers, bridges and
structural steelwork.
Advantages
• Single component, easy to use.
II Time saving, touch dry after 45 minutes and recoatable after 2 hours.
• Economical, one pack system ensures no site wastage.
Description
Nitoprime Zincrich is supplied as a single component grey coloured primer based on zinc and epoxy resins. Sacrificial cathodic action in the coating inhibits the formation and
spread of rust, even if the coating is pinholed or damaged.
Technical support
Fosroc offers a comprehensive range of high performance,
high quality repair, maintenance and construction products.
In addition, Fosroc offers a technical support package to specifiers, end users and contractors, as well as on site
technical assistance in locations all over the world.
Durability
When applied externally, the durability of Nitoprime Zincrich will vary, depending on conditions of use. Contact Fosroc's
Technical Advisory Service for further information.
Limitations
Some paints are not compatible with Nitoprime Zincrich. Test
a small area to check compatibility.
Nitoprime Zincrich is recommended for use only as described
in the Uses section of this datasheet.
constructive solutions
Properties
Specific gravity: 2.0
Volume solids: 30%
Recommended thickness: 40 µm dry
Application thickness:
Application temperature:
Number of coats:
Drying time:
Touch dry
Fully dry/recoatable
Design Criteria
135 µm wet
Minimum 5°C
One (a second coat may be
be applied where the first coat is uneven or discontinuous)
At 20°c
45 mins 1.5-2 hours
At 35°C
15 mins
30 mins-1 hour
One or two coats of Nitoprime Zincrich are generally required,
dependent largely on the nature and profile of the substrate. Nitoprime Zincrich is recoatable generally in 1 .5 to 2 hours
after the initial application. Application of concrete repair
materials may also proceed at this time. At elevated temperatures, the recoatable and overlay times will be
reduced.
Specification clauses
Steel reinforcement primer
The steel reinforcement primer shall be Nitoprime Zincrich, a
single-component zinc-rich liquid packed and supplied ready to use. It shall be applied strictly in accordance with Fosroc's
current written instructions. An unbroken 40 microns thick
coating shall be achieved.
Instructions for use
Preparation
Corroded steel should be exposed around its full
circumference and cleaned to remove all loose scale and
corrosion deposits. It is always preferable to clean the steel to
a bright condition. Grit blasting is recommended.
Some chemical cleaners are based on phosphoric acid which
leaves an electrically insulating film. This film must be completely removed prior to painting with Nitoprime Zincrich.
Mixing
Nitoprime Zincrich should be stirred before use to re-disperse
the heavy zinc deposits.
Application
The application of Nitoprime Zincrich must take place as soon
as possible to a dry steel surface after completion of the
preparation work but always within 3 hours.
Nitoprime Zincrich
Nitoprime Zincrich should be brushed onto the entire
circumference of exposed reinforcing steel, making sure that a full unbroken film is achieved including to the back of the steel.
If any doubt exists about having achieved an unbroken
coating, a second application should be made as soon as the
first coat is fully dry (generally after 2 hours). The primed
surface should not be exposed to the elements for longer than necessary before overcoating or application of the repair
mortar.
Prior to applying the repair mortar, Nitoprime Zincrich will
protect steel under clean interior exposure conditions for a period of several months. In non-aggressive exterior
conditions a maximum of 14 days can be tolerated, but in industrial and/or marine conditions this interval should be
reduced to the practical minimum. Application of concrete
repair materials may proceed when the Nitoprime Zincrich is completely dry, generally after 1.5 to 2 hours at 20°C.
Cleaning
Tools may be cleaned with either Fosroc TCN Thinners or Fosroc Solvent 102.
Estimating
Packaging
Nitoprime Zincrich is supplied in 1 litre containers.
Coverage
Nitoprime Zincrich: 7.4m2/litre or 3.7m2/kg
Note: This coverage figure is theoretical - practical coverage may be significantly less, dependent upon the nature of the
substrate and method of application.
Storage
Shelf life 12 months if stored in a cool, dry place in unopened tins.
Important note
Health and safety
Warning
Nitoprime Zincrich is flammable and may be harmful if swallowed or inhaled and may cause skin or eye irritation.
Precautions
Wear protective (PVC) gloves and eye protection when mixing or using. Epoxy materials are skin sensitising to some people.
Use only in well ventilated areas away from heat, sparks and
naked flames.
Fuller details on each of the products mentioned are available on the product Material Safety Data Sheets. To ensure no
harm is caused to persons using Fosroc products, it is recommended that the appropriate Material Safety Data
Sheets are read by all concerned. Contact Fosroc for copies.
First Aid
Swallowed: Do not induce vomiting, give a glass of water to
dilute and contact a doctor immediately.
Skin: Remove contaminated clothing, wash with warm soapy water. Do not scrub.
Inhaled: Remove person to fresh air. Get medical advice if breathing becomes difficult.
Eyes: Hold open and flood with water for at least 15 minutes.
Get medical advice.
For emergency information contact the National Poisons
Information Centre, phone 0800 764 766 (0800 POISON).
Disposal
If spilt, absorb with clay, sand or earth. Collect and seal in properly labelled metal containers. Dispose of according to
local authority regulations. Do not dispose of down drains or
into local waterways.
Additional information
Nitoprime Zincrich is one product in the Fosroc range of
concrete repair and protection. Other product ranges include admixtures, concrete surface treatments, waterproofing,
roofing, grouts, sealants, flooring, adhesives and architectural
coatings.
Nitoprime Zincrich is the trademark of Fosroc International Limited.
Fosroc products are guaranteed against defective materials and manufacture and are sold subject to the company's terms and conditions of sale, a copy of which may be obtained on request. Whilst Fosroc endeavours to ensure that this technical information is correct at the time of printing, it is the customers responsibility to satisfy themselves by checking with the com pay that this information is still accurate at the time of use, that the product is suitable for the intended application, and that the actual conditions of use are in accordance with those recommended. Because Fosroc has no control over the conditions
fosroc Limited Head Office and Factory 69 Waione Street Petone, Lower Hutt PO Box 38 079 Wellington MC 6332 Tel +64 4 568 8046 Fax +64 4 568 8043 Email [email protected]
www.fosroc.com
of use of its products, all recommendations or suggestions regarding the use of these products are made without guarantee.
Auckland Regional Office 4 Hotunui Drive Mt Wellington, Auckland PO Box494 Auckland 1250 Tel +64 9 273 9292 Fax +64 9 273 9393
Wellington Regional Office 69 Waione Street Petone, Lower Hutt PO Box 38 079 Wellington MC 6332 Tel +64 4 568 7965 Fax +64 4 568 5326
Technical Advisory Service Hotline - Fax 04 568 8476
Christchurch Regional Office 28 Byron Street Sydenham, Christchurch PO Box4190 Christchurch Tel +64 3 366 8194 Fax +64 3 379 4624
October 2000
NZ/N13/05