Angular Aggregate

Round Aggregate PictureAngular shape has the maximum percentage of void ranging from 38 to 45%. It requires more water for lubrication and hence it gives least work-ability for the given water cement ratio. For constant water cement ratio and work-ability the requirement of cement increase.

The interlocking between the aggregate particles is the best and hence the development of bond is very good. This is why angular aggregate is very suitable for high strength concrete and for pavements subjected to tension.