Effect of Rice Husk Pretreatment Process on Properties of Rice Husk Mortar

Abstract:

In this paper, rice husk mortar made from rice husk and cement was prepared and the effect of two pretreatment processes, including water soaking and saturated lime water soaking, on the properties of rice husk mortar were studied. The results indicate that the mechanical properties of rice husk mortar made from pretreated rice husk were significantly higher than that made from untreated rice husk. The saturated lime water soaking pretreatment method is better than the water soaking method. The hydration heat peak and heat release in 3 days of rice husk mortar made from saturated lime water soaking is the highest. This paper also analyzes the change of surface functional groups of rice husk by infrared spectrum. The results show that after pretreatment the hemicellulose absorption peak reduces and the aliphatic absorption peak disappears on rice husk surface.