Using local materials wastes for development of high strength lightweight concrete

الملخص EN

The use of mineral admixtures and super plasticizers, has led to the development of high strength of normal weight concrete.

The best use of these materials has resulted in concrete compressive strength exceeding 70 MPa.

This investigation or research reports results of a study undertaken to develop high strength light weight concretes using a waste of local clay brick as a lightweight coarse aggregate, super plasticizer and mineral admixtures.

A series of seven concrete mixtures were made.

The cement or cement with mineral admixtures (hydrated lime as an additive) content of the mixtures ranged from 300 to 600 kg / m3.

A large number of test cubes and cylinders and prisms were cast for the determination of the mechanical properties of concrete (density, compressive strength, modulus of elasticity, flexural strength and splitting tensile strength).

From the results of this work.

It is concluded that high strength concretes with densities of less than 2000 kg / m3 can be made with the use of minerals admixtures and super plasticizers and light weight coarse aggregate (waste of local brick) as coarse aggregate .The highest compressive strength achieved was 56.4 MPa at 90 days (3 months) for (cement + mineral admixture) content of 600 kg / m3.