| Thu Sep 06, 2018 | Post #1 | Amit
Join date: Aug 2018 | If the crack is just along the joint of RCC column and beam with brick work it is happens if the RCC pillar was not chipped properly before joining with brick wall. Since RCC pillar is cured earlier and surface is smooth bond is not formed properly with mortar at joint. So pillars need to be chipped at surface before constructing wall.
The solution is to remove plaster for around 2-3 inch around the crack for full length, apply a wire mesh ( chicken wire mesh) with nails and then plaster.
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| Fri Sep 07, 2018 | Post #2 | S L Gupta (Civil Engg)
Join date: Mar 2008 | Dear Sir, Cracks at the junctions of Brick Walls and RCC slabsAccording to the designs/drawings there is change in the material on which plaster is to be done such as brick surface, RCC surface etc. - Avoid cracks in case of discontinuity of material (different types of material).
- Apply a neat cut through the plaster at the junction to prevent cracking of plaster caused by discontinuity of backing, changing from concrete to brick work or changing from wall to ceiling.
- Make the cut through the plaster not deeper than 6 mm while the plaster is still green (at the finishing of plaster) to keep the wall plaster separate from ceiling plaster.
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