Experimental research on preparation of high strength concrete with rice husk ash instead of silica fume

¹ Guangxi Key Laboratory of New Energy and Building Energy Saving, Guilin 541004, China
² College of Civil and Architecture Engineering, Guilin University of Technology, Guilin 541004, China
³ Guangxi Beibu Gulf Engineering Research Center for Green Marine Materials, Guilin 541004, China
⁴ Guangxi Engineering and Technology Center for Utilization of Industrial Waste Residue in Building Materials, Guilin 541004, China
⁵ School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China

^* Correspondence: chenping8383@188.com (P. Chen); gxwangyuanhao@gmail.com (Y. Wang)

Abstract

The effect of grinding time on the properties of low-temperature rice husk ash was experimentally studied, and the feasibility of using rice husk ash instead of silica fume to prepare concrete was studied by comparison with silica fume. The results showed that the best grinding time of rice husk ash is 50 minutes, the concrete with similar properties can be prepared by replacing silica fume with super-fine rice husk ash, and the same enhancement effect can be achieved when replacing silica fume with more than 5%, and the performance was consistent.