Relation between Modulus of Elasticity and Compressive Strength of Ultrahigh-Strength Mortar with Mixed Silicon Carbide as Fine Aggregate

Ultrahigh-strength mortar mixed surface-oxidized silicon carbide as a fine aggregate was prepared by means of press-casting followed by curing in an autoclave. The relation between modulus of elssticity up to 111 GPa and compressive strength up to 360 MPa of mortar mixed silicon carbide was discussed and it was revealed that the contributions of the aggregate hardness and of the interfacial strength between the aggregate and the cement paste on the elasticity of mortar were imporant.

The use of fine portions from construction and demolition waste for expansive soil stabilization: A review

Construction and demolition waste(CDW)are the largest waste products in the world today and competes as a viable recycled additive material in place of natural aggregates.Due to the increase in compressive strength of different mix proportions of CDW,it is also considered for reuse in concrete and subbase construction.This study shows the effect of CDW in expansive soil stabilization.The chemical and mechanical properties of these materials have shown that they are capable of developing compressive strength properties for replacement of cement with significant reduction in carbon emission.The inherent compositional properties of recycled CDW compared in this review suggests that CDW have good filler properties in highly expansive soils.Mixtures of crushed brick and recycled aggregates characterised based on chemical properties of different replacement ratios suggests that CDW of good-quality aggregates reduces swell potential of expansive soils and increased mechanical strength in pavement construction.