CEMENT KILN DUST AS A MATERIAL FOR BUILDING BLOCKS

Abstract

This paper presents the results of a study on the properties of hollow sandcrete blocks with cement kiln dust (CKD) as an additive and as a replacement for ordinary portland cement (OPC). When CKD was used as a replacement for cement, the compressive strength and density of blocks generally decreased with higher replacement levels of OPC by CKD, while the percentage water absorption of blocks increased with higher replacement levels. On the other hand, when CKD was used as additive, within the investigated levels, an improvement in the compressive strength of up to 54% was observed. The density of blocks also increased with higher CKD content as additive, while the percentage water absorption of blocks showed a reverse trend. Key Words: Kiln Dust, Material, Building, Blocks, Construction [Global Jnl Engineering Res. Vol.1(1) 2002: 73-78]