The effect of oil palm ash incorporation in foamed concrete

This paper investigates the effect of replacing different portions of cement by fine oil palm ash (fopa). a target density of 1000 kg/m3 was used for the foamed concrete mixes. a foamed concrete mix of 1 part binder,2 parts filler and 0.45 part of water has been used. cement was replaced at levels of 25,35,45,55 and 65% by weight of binder. the compressive strength,density,water absorption,drying shrinkage and sorptivity were tested at different ages. the mix containing 25% of fine opa showed enhanced properties in comparison to the control mix at the age of 90 days. the mixed showed higher compressive strength,less water absorption,increased density and lesser sorptivity. however,the same mix showed higher shrinkage readings than that of the control mix. © 2015 penerbit utm press. all rights reserved.