Preparation of excellent building materials using geopolymer instead of traditional cement  

作　　者：Yuanchuan Ren Shanqisong Huang Yan Hu Nanqi Ren Lingrui Kuang Fenghui Wu Dandan Chen Xuejun Zhu Qiang Niu 

机构地区：[1]College of Biological and Chemical Engineering(College of Agriculture),Panzhihua University,Panzhihua,617000,China Faculty of Environmental Science and Engineering,Kunming [2]University of Science and Technology,Kunming,650500,China [3]School of Environment,Harbin Institute of Technology,Harbin,150090,China

出　　处：《Particuology》2024年第12期333-342,共10页颗粒学报（英文版）

基　　金：support for this project was provided by the National Natural Science Foundation of China (grant Nos.52400156,42107260);the Sichuan Science and Technology Program (grant No.22NSFSC2972);Key Laboratory of Green Chemistry of Sichuan Institutes of Higher Education (Open Fund Project No.LZj2201);Key Laboratory of Dry-Hot Valley Characteristic Bio-Resources Development at university of Sichuan Province (Open Fund Project No.GR-2024-E-01).

摘　　要：In order to improve the resource utilization rate of aluminum ash,high-quality building materials were prepared by replacing traditional cement with aluminum ash,and the performance of building materials under different conditions and factors was studied.The experimental results show that when the pressure was 300 MPa and the natural curing time was 3 days,the comprehensive performance of the brick reaches its optimum(compressive strength of 60 MPa,flexural strength of 1.3 MPa,and softening coefficient of about 0.9),far superior to other reported methods for preparing building materials.SEM-EDS,Particle size analysis and XRD confirmed that the crystal structure in aluminum ash undergoes a transformation under high-intensity mechanical pressure,forming cement-based active substances.This study not only obtained a new method for preparing building materials,but also further promoted the research on the resource utilization of aluminum ash,providing a new approach for the treatment and disposal of hazardous waste.

关 键 词：Aluminum ash Hazardous solid waste Extreme high value DENSIFICATION Super building materials 

分 类 号：TU527[建筑科学—建筑技术科学]