文献类型：期刊文献

英文题名：Preparation, Properties and Microstructure of Non-Calcination Rock Powder Brick with Orthogonal Experiments

作者：Fan, Jie Wang, Zhongkun Li, Gengying

第一作者：范杰

通信作者：Li, GY[1]

机构：[1]Guizhou Inst Technol, Sch Civil Engn, Guiyang 550003, Peoples R China;[2]Wenzhou Univ, Sch Architectural Engn, Wenzhou 325035, Peoples R China;[3]South China Agr Univ, Coll Water Conservancy & Civil Engn, Guangzhou 510642, Peoples R China

第一机构：贵州理工学院土木工程学院

通信机构：corresponding author), South China Agr Univ, Coll Water Conservancy & Civil Engn, Guangzhou 510642, Peoples R China.

年份：2021

卷号：11

期号：21

外文期刊名：APPLIED SCIENCES-BASEL

收录：;Scopus(收录号：2-s2.0-85118574173);WOS:【SCI-EXPANDED(收录号:WOS:000720486200001)】；

基金：This research was funded by the National Natural Science Foundation of PR China (No. 52178209), the project of Natural Science Research Foundation of Guizhou Province (No. ZK [2021]-283) and High-Level Talent Fund of Guizhou Institute of Technology (No. XJGC20190650). The authors are grateful for the above supporters.

语种：英文

外文关键词：non-calcination rock powder brick; orthogonal experimental design; compressive strength; water resistance; microstructure

摘要：In this paper, the preparation method and reasonable mix ratio of non-calcination brick with rock powder, cement, lime and fly ash ceramsite (FAC) as the raw materials were experimentally evaluated. To better understand the effects of each component on the performance of non-calcination rock powder brick (NCRPB), an orthogonal experimental design was conducted with the water-cement ratio (W/C), rock powder-cement ratio (R/C), lime content (w(l)) and FAC content (w(f)) as the main factors, which involved four factors and three factor levels. According to the orthogonal experimental design, the compressive strength, water resistance and bulk density of nine groups of NCRPB specimens were tested. The results show that R/C was the most important factor affecting the compressive strength and water resistance, while the FAC content influenced the bulk density of NCRPB greatly. In this study, the reasonable mix of W/C, R/C, w(l), and w(f) in weight was 0.6, 3.0, 30% and 21%, respectively. In addition, the microstructure and strength formation mechanism of NCRPB were analyzed by using SEM and XRD. The test results show that the rock powder having pozzolanic activity could react with the additional Ca(OH)(2) to produce hydration products, leading to the improvement of the performance of NCRPB.