NATURAL CEMENT DISTRIBUTION LTD.NATURAL CEMENT DISTRIBUTION LTD.

TECHNICAL PRESENTATION

ON

NATURAL CEMENT & HOW IT CAN BENEFIT

THE WATER INDUSTRY

PRESENTED BY PHIL RICHARDSON

MORTAR CHARACTERISTICS STRENGTHS In accordance with AFNOR Standard EN 196-1, using a standardised mix: Cement/sand ratio = 1/2 (Sand complying with AFNOR Standard); Water/cement ratio = 0.40 Typical average values in Mpa Time periods Compressive strength Flexible strength 15 mins 5 1 1 h 7 1.5 3 h 9 2 1 day 16 3 7 days 27 3.5 28 days 51 6 91 70 7 6 months 75 8 1 year 83 9 Steady increase in Compressive strength over 1 year and thereafter.

Histograms of resistance to Sulphuric Acid (ph=4)

³

³

RESISTANCE TO SEAWATER AND SULPHATED WATER In accordance with NF P 18 837 Standard (special products intended for hydraulic binder-based concrete work) (C.E.B.T.P. Test No. 31114.6.883) Mix designation Age Expansion in µ Fresh water Seawater Sulphuric water 7 days 13 17 13 NATCEM+ 0.3% citric acid 28 days 13 37 30 1/2 mortar, w/c = 0.40 3 months 40 120 70 6 months 40 133 70 7 days 17 73 23 O.P.C. CEM 1 52.5 28 days 23 227 83 1/3 mortar, w/c = 0.33 3 months 97 1147 235 6 months 97 2047 360 According to the NF P 18 821 Standard covering standard guaranteed properties for special products intended for hydraulic binder-based concrete work :« After six months immersed in fresh water, the elongation of test specimens shall be less than or equal to 400 µ. After six months immersed in either seawater or sulphated water, the elongation of test specimens shall be less than or equal to 600 µ. »

WATER PERMEABILITY TEST OFWATER PERMEABILITY TEST OF

NATURAL CEMENT MORTARNATURAL CEMENT MORTAR

% CHANGE IN WEIGHT% CHANGE IN WEIGHTWHEN SUBMERSED IN SULPHURIC ACID pH4WHEN SUBMERSED IN SULPHURIC ACID pH4

0250500750

100012501500175020002250

7 DAYS 28 DAYS 3 MONTHS 6 MONTHS

O.P.C CEM I 52.5 NATCEM

RESISTANCE TO SEA WATERRESISTANCE TO SEA WATER( Expansion in ( Expansion in µµ ))

02468

101214

DE

PTH

OF

CA

RB

ON

AT

ION

1 DAY 3DAYS

7DAYS

10DAYS

21DAYS

28DAYS

36DAYS

60DAYS

AGE (DAYS)

NATCEM CEM II b 32.5

CARBONCARBON DIOXIDE PENETRATIONDIOXIDE PENETRATION

CORROSION RESISTANCE OF NATCEM 35, CORROSION RESISTANCE OF NATCEM 35, PMC1 PMC1

AND THE CONTROL CONCRETEAND THE CONTROL CONCRETE

05

10152025303540

0 20 40 60 80 100

120

140

160

180

200

220

240

260

280

300

Time (days)

Corr

osio

n cu

rren

t (m

Am

p)

PMC 1 Control NATCEM 35

Contaminate SOL A SOL B SOL C SOL D SOL E SOL FpH 7.8 2.5 8.0 7.8 7.0 2.5

Sulfate 4200 4200 4200 4200 4200 4200

Sulfide 34 34 - -

Chloride - - 218 24

Arsenic 5 5 65 1

Cadmium - - - 0.8

Chromium 23 23 39 41

Cobalt - - - 11

Copper 26.5 26.5 180 103

Lead 91 91 530 130

Manganese 355 355 - 730

Mercury - - 2 0.1

Nickel 23.5 23.5 28 43

Vanadium - - - 47

Zinc 65 65 351 175

Phenol 1 1 3.5 -

Toluene 100 100 100 100

BRE TEST SOLUTIONSBRE TEST SOLUTIONS

Sol G = water control, all contaminants in mg/l

0102030405060708090

100

A B C D E F G(WATER)

SOLUTIONS

CO

MPR

ESS

IVE

ST

RE

NG

TH

28 DAYS1 YEAR3 YEARS

COMPRESSIVE STRENGTH OF 100 MM CUBES OF NATURAL CEMENT CONCRETE AFTER

IMMERSION IN SOLUTIONS A-G FOR 1 YEAR & 3 YEARS

MASS OF 100 MM CUBES OF NATURAL CEMENT (NC) CONCRETE MASS OF 100 MM CUBES OF NATURAL CEMENT (NC) CONCRETE IMMERSED IN SOLUTIONS AIMMERSED IN SOLUTIONS A--G FOR 1 YEARG FOR 1 YEAR

Cube identity Initial mass/g Final Mass/g Mass Change/g

Mass change /%N

Solution identity

NC-9 2342.5 2351.8 +9.3 +0.40 A

NC-10 2354.3 2365.1 +10.8 +0.46 A

NC-11 2347.0 2356.9 +9.9 +0.42 A

NC-20 2376.2 2388.2 +12.0 +0.51 B

NC-21 2351.6 2363.5 +11.9 +0.51 B

NC-22 2354.2 2367.0 +12.8 +0.54 B

NC-31 2360.1 2368.7 +8.6 +0.36 C

NC-32 2361.8 2372.3 +10.5 +0.44 C

NC-33 2426.9 2437.8 +10.9 +0.45 C

NC-42 2351.7 2359.1 +7.4 +0.31 D

NC-43 2353.4 2362.1 +8.7 +0.37 D

NC-44 2357.1 2365.4 +8.3 +0.35 D

NC-53 2344.8 2352.4 +7.6 +0.32 E

NC-54 2361.0 2368.5 +7.5 +0.32 E

NC-55 2350.6 2658.2 +7.6 +0.32 E

NC-64 2367.4 2375.3 +7.9 +0.33 F

NC-65 2327.8 2336.9 +9.1 +0.39 F

NC-66 2380.3 2390.9 +10.6 +0.45 F

NC-76 2327.7 2334.3 +6.6 +0.28 G

NC-77 2365.9 2372.3 +6.4 +0.27 G

NC-78 2327.4 2335.0 +7.6 +0.33 G

Cube identity

Initial mass/g Final Mass/g Mass Change/g Mass change /%N

Solution identity

NC-1 2342.8 2356.6 +13.8 +0.59 A

NC-2 2351.4 2366.6 +15.2 +0.65 A

NC-3 2344.6 2358.2 +13.6 +0.58 A

NC-12 2364.7 2385.2 +20.5 +0.87 B

NC-13 2335.1 2357.9 +22.8 +0.98 B

NC-14 2357.7 2378.7 +21.0 +0.89 B

NC-23 2332.2 2350.4 +18.20 +0.78 C

NC-24 2332.9 2350.6 +17.7 +0.76 C

NC-25 2360.2 2377.3 +17.1 +0.72 C

NC-34 2354.4 2368.1 +13.7 +0.58 D

NC-35 2372.3 2384.9 +12.6 +0.53 D

NC-36 2324.9 2338.1 +13.2 +0.57 D

NC-45 2330.7 2342.2 +11.5 +0.49 E

NC-46 2321.2 2334.6 +13.4 +0.58 E

NC-47 2365.7 2378.6 +12.9 +0.55 E

NC-56 2356.0 2373.5 +17.5 +0.74 F

NC-57 2322.6 2341.0 +18.4 +0.79 F

NC-58 2353.3 2370.0 +16.7 +0.71 F

NC-67 2390.8 2401.9 +11.1 +0.46 G

NC-68 2332.9 2343.5 +10.6 +0.45 G

NC-69 2356.2 2366.4 +10.2 +0.43 G

MASS OF 100 MM CUBES OF NATURAL CEMENT (NC) CONCRETE MASS OF 100 MM CUBES OF NATURAL CEMENT (NC) CONCRETE IMMERSED IN SOLUTIONS AIMMERSED IN SOLUTIONS A--G FOR 3 YEARSG FOR 3 YEARS

CONCRETE REPAIRS VERTICAL

COST COMPARISON BETWEEN NATCEM 35 AND FOSROC SYSTEM

FOSROC CEMENTITIOUS SYSTEM BASED ON JANUARY 1998 PRICES.

Based on a 10 mm thick repair Cost per Sq.m.

PRIMER NITOBOND HAR £7.35 per litre 4 sq.m. per litre £ 1.84

REPAIR MATERIAL RENDEROC HB £2.06 per litre 10 litres per sq.m £ 20.60

CURING NITOBOND AR £7.62 per litre  8 sq.m. per litre £ 0.95

TOTAL COST OF MATERIAL  £ 23.39

COST OF REPAIR  1 BAG OF NATCEM 35

NO PRIMER ONLY WATER

WORKS IN WET AND COLD DOWN TO 0°C

NO CURING AGENT REQUIRES.

DWI CURING REQUIREMENT ½ HOUR 

ALLOWS EARLY FILLING OF RESERVOIRS, PIPES ETC.

LABOUR REQUIRED TO CARRY OUT CONCRETE REPAIR

3 PART SYSTEM NATCEM 35 SYSTEM

PRIMER DAY 1 DAMPEN DAY 1

FIX FORMWORK

CARRY OUT REPAIR DAY 2 DAY 1

APPLY CURING AGENT

STRIP FORMWORK DAY 3 DAY 1

PAINT REPAIR ETC. DAY 10 DAY 1

REMOVE CONES OR

SCAFFOLDING DAY 10 DAY 1

LABOUR 4 VISITS TO SITE 1 VISIT TO SITE

A SELECTION OF CLIENTS, CONSULTANTS AND CONTRACTORS A SELECTION OF CLIENTS, CONSULTANTS AND CONTRACTORS WHO HAVE USED & APPROVED WHO HAVE USED & APPROVED

NATURAL CEMENT PRODUCTS & SYSTEMSNATURAL CEMENT PRODUCTS & SYSTEMS

LONDON UNDERGROUND LTD.  AMEY PETER COX

ABERDEENSHIRE COUNCIL  KENWOOD PLC GATESHEAD COUNCIL 

TIMBERWISE EURO TUNNEL  YORKSHIRE WATER

ENGLISH HERITAGE  EDMUND NUTTALL SEVERN TRENT WATER

STONBURY LTD SIMPSON CIVIL ENG. MOWLEM

BARCOL LTD S.E.S. LTD DONCASTER M.B.C

DOVER HARBOUR BOARD GRANT RAIL VOLKERLASER

NETWORK RAIL RYAN CONTRACTING ROYAL AIR FORCE 

H.M. PRISON SERVICE U.K. COAL WELSH WATER 

SKANSKA SIR ROBERT McALPINE AMCO

V.A. CROOKES GLEESON BRITISH WATERWAYS 

EXPERTREAT LTD  KIER AQUAREND

CONCLUSIONCONCLUSION

What conclusions can we reach What conclusions can we reach regarding regarding

Natural Cement Distribution Natural Cement Distribution Products & Systems ?Products & Systems ?

NATURAL CEMENT NATURAL CEMENT PRODUCTS & SYSTEMSPRODUCTS & SYSTEMS

PROVENPROVEN

USER FRIENDLYUSER FRIENDLY

ENVIRONMENTALLY FRIENDLYENVIRONMENTALLY FRIENDLY

WHERE TIME IS LIMITEDWHERE TIME IS LIMITED

DRINKING WATER APPROVALDRINKING WATER APPROVAL

ADVERSE CONDITIONSADVERSE CONDITIONS

CHEMICALLY RESISTANTCHEMICALLY RESISTANT

PROVEN TIME & MONEY SAVERPROVEN TIME & MONEY SAVER

APPROVED BY MAJOR COMPANIES AND APPROVED BY MAJOR COMPANIES AND

CONTRACTORS IN THE UK & AROUND THE WORLDCONTRACTORS IN THE UK & AROUND THE WORLD

WISH TO THANK YOU FOR

ATTENDING THIS

PRESENTATION

NATURAL CEMENT DISTRIBUTION LTD.NATURAL CEMENT DISTRIBUTION LTD.