LABORATORY INVESTIGATION OF CHIKOKO MUD AS A POZZOLANA

Abstract

The need for economic use of cement in soil stabilization arises from consideration of the trend in the cost of cement.

This paper presents a laboratory investigation of the engineering characteristics of soil-cement and soil-pozzolana made from a lateritic soil and pozzalana made from a silty clay (locally known as chikoko mud) respectively.

The results show that less than 50% of the cement requirement given by the Portland Cement Associa-tion is required for efficient stabilization of a lateritic soil; and that up to 30% of this cement requirement can be replaced by calcined and ground chikoko mud (otherwise referred to in this paper, as Chikoko Pozzolana) without adversely affecting the performance of the soil cement.

It is therefore concluded that the Chikoko Pozzolana be commercially produced to supplement the fly ash (most common pozzolana) that is presently produced from only one power station in Nigeria.