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Wednesday, September 19, 2012

Method Statement For Remedial Of Honeycomb At Structure Member


METHOD STATEMENT FOR REMEDIAL OF HONEYCOMB AT STRUCTURE MEMBER

Case A: Superficial Honeycomb

  1. To identify the affected area
  2. Removed all the loose particles surrounding the affected area and make sure it was free from dust, grease and oil.
  3. Estimated the quantity of non-shrink grout and water to be used, gradually add the grout into the water and mix it by using spatula or slow speed drill to the consistency required (refer to the mixing ratio guide for water: grout ratio)
  4. Trowel able of stiff consistency mix is adopted to apply onto the affected area by using the steel trowel and leveled it to flush with the original structure member
  5. Repeat item 1 to 4 for any new affected area

Case B: More Severe Honeycomb (Cavity)

  1. To identify the affected area
  2. Removed all the loose particles surrounding the affected area and make sure it was free from dust, grease and oil.
  3. Prepare and install the formwork for the grouting work around the defective area and leave about 25mm gap to pour the non-shrink grout.
  4. Estimate the quantity of non-shrink grout and water to be used, gradually add the grout into the water and mix it by using spatula or slow speed drill to the consistency required (refer to the mixing ratio guide for water: grout ratio)
  5. Pour the mix with non-shrink grout at high workability by using gravity flow
  6. Remove formwork after 24 hours and patch the 25mm gap with stiff mix non-shrink grout.
  7. Repeat item 1 to 4 for any new affected area

Materials

  1. Sika Grout-215
  2. 5 Star Grout

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