“PARTIAL REPLACEMENT OF CEMENT BY WOOD-ASH”
Keywords:
wood ash, compressive strength, flexural strength, split tensile strength, replacement.)Abstract
In this study, Wood Ash (WA) prepared from the uncontrolled burning of the saw dust is evaluated for its
suitability as partial cement replacement in conventional concrete. The physical, chemical characteristics of wood ash is
presented and analyzed. The strength parameters (compressive strength, split tensile strength and flexural strength) of
concrete with wood ash cement are evaluated and studied. Water-to-binder ratio is (0.5) and five different replacement
percentages of WA (5%, 10%, 15%, 20% and 25%. The results shows that the compressive strength, split tensile
strength and flexural strength is increased up to 15% of replacement and then start decreasing at 20% and 25% of
replacement of cement by wood ash. Chemical analysis of wood ash shows that it contains silica and thus can be used as
cement replacing material. Through the analysis of results obtained in this study, it was concluded that wood ash could
be blended with cement with positive effects on strength of concrete.
