This paper reviews the contribution of some researchers on blended
cement and reports recent findings of a research programme focused on the exploitation
of solid wastes in foamed concrete. Solid wastes studied include rice husk and its
derivatives, paper sludge and recycled expanded polystyrene (EPS). The objective is to
develop an environmental-friendly and economical foamed concrete for construction. A
novel process for the synthesis of micronised silica for use in foamed concrete is revealed
in order to provide a unique solution to construction on soft soil. Concerted collaborative
effort by researchers and the readymix concrete industry is expected to enhance the
competitive edge of the construction industry
