The rice husk was pretreated with different methods(tap water,saturated lime water,1%sodiumhydroxide solution),different treatment time(12 or 24,36 h).The rice husk mortar was prepared by replacing the equal volume engineering sand with 45%rice husk volume replacement rate.The macroscopical properties of modified rice husk mortar such as compressive strength,flexural strength,impermeability and thermal conductivity were studied experimentally,and the mechanism of modification was explained using scanning electron microscope.The experimental results showed that the compressive strength and flex...
