FLEXURE AND SHEAR BEHAVIOUR OF SAWDUST CONCRETE

Abstract

Sawdust concrete has been prepared by mixing together cement and sawdust in the ratio 1:3 by volume (1:0.70) by weight. This concrete has the advantages that it can be nailed and cut by a saw with relative ease. Its other beneficial properties are its lightweight and good thermal insulation properties and so it can be used as a timber substitute in some situations and also for providing thermal insulation. Sawdust is a waste material obtained from sawmills and is generally used for burning or for sprinkling on newly constructed terrazzo floors for protection during construction. Thus, use of sawdust for making a concrete which is a timber substitute is a better application. This material has been used in U.S.A. and in Germany where sawdust from_fir trees is commonly used. Sawdust from other trees contains tannins which have an adverse affect on the setting of cement.