Aggregate is an important constituent in concrete. It occupies about three-quarters of the volume of concrete, it contributes significantly to the structural performance of concrete, especially strength, durability, and volume stability. Different types of aggregate Normal weight aggregates Light-weight aggregates Heavy-weight aggregates Fibrous aggregates Gaseous aggregates In 80% of construction works, we used normal weight … Read more Aggregate ll Types and Property of aggregates.
Test for determination of aggregate abrasion value The aggregate abrasion value gives the resistance of an aggregate against wearing. The test involves taking specified quantity of standard size material along with specified number of abrasive charge in a standard cylinder and revolving it for certain specific revolutions. The particles smaller than 1.7mm sizes are separated … Read more Different aggregates test
Usually in large construction works, whether the available aggregate is suitable or not for the work is determined by the impact value test of aggregate. The impact value test of aggregate gives a relative measure of the resistance of an aggregate to sudden shock or impact. Steps by step procedure for Impact value test of … Read more What is impact value test of aggregate ?
Bulking of sand is the increase in volume of a given weight of sand cause by the films of water pushing the sand particles apart. Free moisture forms a film around each particle. This film of moisture exerts surface tension which keeps the neighboring particles away from it. The force exerted by surface tension keeps … Read more Bulking of sand
It consists of small angular or round grains of silica and is formed by the decomposition of sandstone under the effect of weathering agencies. Sand is commonly used as a fine aggregate in the plain cement concrete. It may be either natural sand e.g. river sand, pit sand, and sea sand or artificial sand i.e. … Read more Use of Sand on construction !!!