Why is loose concrete removed from the surface where new concrete is to be done?

Question Posted / abhishek_pal

2 Answers
4983 Views
Ansals, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

Why is loose concrete removed from the surface where new concrete is to be done?..

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.

Is This Answer Correct ?

8 Yes

0 No

Why is loose concrete removed from the surface where new concrete is to be done?..

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

Is This Answer Correct ?

2 Yes

0 No

Post New Answer

More Civil Engineering Interview Questions

Sir what reason the deshuttring of column 1 day after casting and slab deshuttring time 14 days after casting

1 Answers Saudi Oger,

Design a cantilever slab to carry a live load of 2000 N/m2. The overhang of the slab is 1.20m. b) A slab over a room is 4.75m x 4.75m. The edges of the slab are simply supported and the corners are not held down. The live load an the slab is 300 Kg/m2. The slab has a bearing of 15cm. On the supporting walls. Design the slab as per Rankine - Grashoff theory. Assume weight of R.C.C. = 2400 Kg/m2.

0 Answers

How u can calculate the Octagon ring distance from center of raft in 275 mtr chimney slipform errection? cantact no:0993455097

0 Answers

what is preposition of M-5 grade

3 Answers Montag Infrastructure,

what is the basic difference between Coloumn & Shear Wall

0 Answers

what is minimum steel area required for rcc slab

4 Answers

what are the types of dams

3 Answers

though u r a civil engineer, y r u interested in tcs???