Following are the effects on concrete due to segregation.
Effects on Concrete
- A segregated concrete is very weak in strength
- Due to segregation after placing, the concrete in the lower part of a pour of any significant depth can be stronger than that in the upper part.
- Segregated concrete does not give a homogeneous mass throughout the structure
- Rock pockets, sand streaks and porous layers in hardened concrete are the result of segregation.
- Due to segregation excess mortar comes to the top of the surface, which causes plastic shrinkage cracks.
- A segregated concrete is difficult to compact properly.