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Method statement for structural concrete repair rev.0

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Method statement for structural concrete repair rev.0

  1. 1. Doc. Title Method Statement of Building Works –Structural Concrete Repair TOA-TOYO JOINT VENTURE Doc. No CM – MS – BW - Rev. No. 0 Date July, 2012 Construction 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
  2. 2. Doc. Title Method Statement of Building Works –Structural Concrete Repair TOA-TOYO JOINT VENTURE Doc. No CM – MS – BW - Rev. No. 0 Date July, 2012 Construction 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
  3. 3. Doc. Title Method Statement of Building Works –Structural Concrete Repair TOA-TOYO JOINT VENTURE Doc. No CM – MS – BW - Rev. No. 0 Date July, 2012 Construction 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 MAPPING SURFACE PREPARATION DEFECT CATEGORY IDENTIFICATION AND METHOD OF TREATMENT TREATMENT APPLICATION CURING Page 3
  4. 4. Doc. Title Method Statement of Building Works –Structural Concrete Repair TOA-TOYO JOINT VENTURE Doc. No CM – MS – BW - Rev. No. 0 Date July, 2012 Construction 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 Page 4
  5. 5. Doc. Title Method Statement of Building Works –Structural Concrete Repair TOA-TOYO JOINT VENTURE Doc. No CM – MS – BW - Rev. No. 0 Date July, 2012 Construction 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 Sealing Sikadur 731 b.Crack width from 0.15mm to 0.30mm Pressure Injection Sealing: Sikadur 731 Injection :Sikadur 752 c.Crack with over 0.30mm
  6. 6. Doc. Title Method Statement of Building Works –Structural Concrete Repair TOA-TOYO JOINT VENTURE Doc. No CM – MS – BW - Rev. No. 0 Date July, 2012 Construction 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 Condition III 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 Page 6
  7. 7. Doc. Title Method Statement of Building Works –Structural Concrete Repair TOA-TOYO JOINT VENTURE Doc. No CM – MS – BW - Rev. No. 0 Date July, 2012 Construction 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
  8. 8. Doc. Title Method Statement of Building Works –Structural Concrete Repair TOA-TOYO JOINT VENTURE Doc. No CM – MS – BW - Rev. No. 0 Date July, 2012 Construction 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 Page 8

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