Answer / amaregouda

To avoid the formation of micro cracks in construction joint and as well as to provide a proper bond between old and new surfaces.Usage of bonding chemicals is advised like nitto bond.

Answer / piyush singh

Loose Concrete and Laitance is removed from the old surface of the concrete and in some cases Chemicals are also used such as Fosroc Nitobond Ep and others , so that a proper bond exists between the old and new concrete and any micro pores does not remains in the concrete which may lead to the leakage

why you are selecting the civil engineering

4 Answers   gdcl, Sobha Developers,

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What is the proportion of M30 to M80and which construction these are used

3 Answers   Unicel,

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What cantilever length can be provided safely for Galleries in a multi storey building?

1 Answers  

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What is a tensile strength? What is the tensile strength of wood?

0 Answers  

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How to calculate ventonite bag in pile ( pile depth 25 m dia 1m)

0 Answers  

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what is the difference between NP2 Class and NP3 Class RCC Hume pipes

8 Answers   GWRDC, IVRCL, IVRL,

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what is box type waterproofing and how it is exsiccated and what is the method of doing box type waterproofing

0 Answers  

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What is the zero value in quantity surveying

0 Answers   NCC,

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what is the difference between 2 legged to 4 legged stirrups?

1 Answers   VRC Constructions,

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Explain the difference between shear and tensile strength.

0 Answers  

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is it compulsory to cast columns along with beams & slabs for monolithic joints

1 Answers  

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What is line killa

1 Answers   NBPL,

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