Doc. TitleMethod Statement of Building Works –Structural Concrete Repair TOA-TOYO JOINT VENTURE

Doc. No CM – MS – BW - Rev. No. 0 Date July, 2012Construction of Port Facilities and Buildings for Cai Mep International Container Terminal

CAI MEP INTERNATIONAL CONTAINER TERMINAL

METHOD STATEMENT

FOR

STRUCTURAL CONCRETE REPAIR WORKS

Page 1

Doc. TitleMethod Statement of Building Works –Structural Concrete Repair TOA-TOYO JOINT VENTURE

Doc. No CM – MS – BW - Rev. No. 0 Date July, 2012Construction of Port Facilities and Buildings for Cai Mep International Container Terminal

CONTENT

1. Purpose Page 3

2. Scope of Work Page 3

3. Work Flow Chart Procedure Page 3

4. Safety Control Page 6

　 Attachment 1

Page 2

Doc. TitleMethod Statement of Building Works –Structural Concrete Repair TOA-TOYO JOINT VENTURE

Doc. No CM – MS – BW - Rev. No. 0 Date July, 2012Construction of Port Facilities and Buildings for Cai Mep International Container Terminal

1. PURPOSE

The Main purpose of this Method Statement is to outline the repair procedure of structural

concrete works for all building works in compliance with all the required specifications,

standards, and proper construction procedures.

2. SCOPE OF WORK

This document covers the work for the repair of structural concrete as follows:

2.1 Repair of structural concrete surface due to honeycomb, tie rod holes and other

imperfections of concrete surface.(Sikatop 121)

2.2 Repair of structural concrete due to concrete surface cracking.( Sikadur 752/Sikadur

731)

2.3 Repair of structural concrete due to water leak.(Sika Top Seal 107)

3. WORK FLOW CHART

Page 3

DEFECT CATEGORY IDENTIFICATION AND METHOD OF

TREATMENT

TREATMENT APPLICATION

SURFACE PREPARATION

MAPPING

CURING

Doc. TitleMethod Statement of Building Works –Structural Concrete Repair TOA-TOYO JOINT VENTURE

Doc. No CM – MS – BW - Rev. No. 0 Date July, 2012Construction of Port Facilities and Buildings for Cai Mep International Container Terminal

3.1 MAPPING

A sketch of the surface defect shall be prepared indicating the location as reflected in the

drawing. All surface defects shall be given ID number for easy reference.

3.2 SURFACE PREPARATION

Surface preparation shall be done in accordance with the materials manufacturer’s

recommendation as indicated in this method of statement, technical data sheet as per

attachment.

3.4 DEFECT CATEGORY IDENTIFICATION AND TREATMENT METHOD

After surface preparation of affected area, types of defects and classification of treatment shall

be established as follows:

Category Surface Defect Classifications Illustration Treatment Material

I

Spalling ( Surface voids or

irregularities/HoneyComb/

Cone Holes

a. Surface

defect up to

5mm

Patching

Sika Top

121

b. Srface

defect from

5mm ~80mm

or up to rebar

surface

Bonding

Coat: Sika

Top 121

Repair

Mortar:Sika

Monotop

615 HB

II

Severe Voids and

Honeycomb

Surface defect

until exposed

rebars

Grouting Flowable

Grout: Sika

Monotop R

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Doc. TitleMethod Statement of Building Works –Structural Concrete Repair TOA-TOYO JOINT VENTURE

Doc. No CM – MS – BW - Rev. No. 0 Date July, 2012Construction of Port Facilities and Buildings for Cai Mep International Container Terminal

3.5 TREATMENT APPLICATION

Mixing,application and curing shall be done in accordance with the manufacturer’s

recommendation as indicated in this method of statement. technical data sheet as shown in

attachment 1.

Page 5

III CRACKS

a.Hairline/Shrinkage

Cracks width up to

0.15mm

No Repair N/A

V-cut and

SealingSikadur 731

b.Crack width from

0.15mm to 0.30mm

Pressure

Injection

Sealing:

Sikadur 731

Injection

:Sikadur

752

c.Crack with over

0.30mm

Doc. TitleMethod Statement of Building Works –Structural Concrete Repair TOA-TOYO JOINT VENTURE

Doc. No CM – MS – BW - Rev. No. 0 Date July, 2012Construction of Port Facilities and Buildings for Cai Mep International Container Terminal

3.6 EQUIPMENT TO BE USED

Category Equipment Quantity

I & II

Concrete Cutter

Hand Chipping or chisel and

Hammer

Grinder

Water Jet

Mixing paddle

As Defined in actual site

ConditionIII b

Crack Scale

Grinder

Mixing paddle

III c

Crack Scale

Grinder

Mixing Paddle

Injection Machine

4. SAFETY CONTROL

Prior to commencement of the works, TTJV will ensure that technical specifications of each

product was carefully carried out to avoid any problem at site.

4.1 Personal Protective Equipment

♦ All required PPE such as helmet and safety shoes shall be provided and

maintained for all workers doing the repair works.

♦ For the porpose of protecting workers eye injury and flying particles, eye

protector such as safety glass,face shield and goggles shall be provided

engaged in the related work.

♦ Mask and rubber gloves are required to workers involved in mixing and

application as per MSDS requirements.

4.2 Barricades,signs and Materials to be used

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Doc. TitleMethod Statement of Building Works –Structural Concrete Repair TOA-TOYO JOINT VENTURE

Doc. No CM – MS – BW - Rev. No. 0 Date July, 2012Construction of Port Facilities and Buildings for Cai Mep International Container Terminal

♦ Safety and warning signboards in dual language shall be installed.

♦ Barricades shall be erected to isolate the working area with suitable and

sufficient access.

♦ Materials required for this work shall be properly stored and identified at areas

designated for this purpose.

♦ All Scaffolding to be used, if any shall be inspected prior to use.

Page 7

Doc. TitleMethod Statement of Building Works –Structural Concrete Repair TOA-TOYO JOINT VENTURE

Doc. No CM – MS – BW - Rev. No. 0 Date July, 2012Construction of Port Facilities and Buildings for Cai Mep International Container Terminal

Attachment 1

SIKA PRODUCTS

Sika Monotop 615HB

Sika Monotop R

Sikadur 731

Sikadur 752

Sika seal 107

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