文献类型：期刊文献

英文题名：A Study on the Uniaxial Compressive Constitutive Characteristics of Phosphogypsum-Based Irregular-Shaped Bricks (PG-ISBs) for Underground Filling Retaining Walls

作者：Jiang, Jixiang Xu, Guihong Zhao, Zhenhua Li, Hejun He, Mingwei Wu, Wenqi Chen, Ziwei

第一作者：Jiang, Jixiang

通信作者：Xu, GH[1]

机构：[1]Guizhou Normal Univ, Sch Mat & Architectural Engn, Guiyang 550025, Peoples R China;[2]Guizhou Inst Technol, Sch Civil Engn, Guiyang 550025, Peoples R China;[3]Guizhou Bldg Mat Prod Qual Inspect & Testing Inst, Guiyang 550014, Peoples R China;[4]Guizhou AVIC Precis Co Ltd, Guiyang 550025, Peoples R China

第一机构：Guizhou Normal Univ, Sch Mat & Architectural Engn, Guiyang 550025, Peoples R China

通信机构：corresponding author), Guizhou Inst Technol, Sch Civil Engn, Guiyang 550025, Peoples R China.|贵州理工学院土木工程学院;贵州理工学院;

年份：2025

卷号：9

期号：4

外文期刊名：JOURNAL OF COMPOSITES SCIENCE

收录：Scopus(收录号：2-s2.0-105003559512);WOS:【ESCI(收录号:WOS:001475536700001)】；

基金：This research was supported by the Guiyang City Science and Technology Plan Project (Zhu Ke Contract [2024]-1-8), Natural Science Foundation of Guizhou Province (Project Code: QIAN KE HEJICHU-ZK [2022]-027; ZK [2021] YIBAN 284), the National Natural Science Foundation of China (Project Code, 52268065), Guizhou Province innovative high-level talent project (Project Code:QIAN KE HE Platform Talents-GCC [2023] 053), and Qiankehe Talent CXTD [2025] No. 042.

语种：英文

外文关键词：underground filling retaining wall; irregular-shaped bricks; anhydrite; uniaxial compression; constitutive model

摘要：This study investigated the mechanical properties of a cementitious material used to prepare irregular-shaped brick masonry structures (PG-ISBs) from industrial solid wastes, including phosphogypsum, calcium powder, cementitious agents, and construction brick debris. The hydration products, microstructure, and elemental composition of the system were analyzed using X-ray diffraction (XRD) and scanning electron microscopy (SEM). Based on the experimental stress-strain relationship curves, a constitutive model for the cementitious material was established. The results show that the compressive strength of the PG-ISB cementitious material meets the requirements for filling retaining walls. SEM observations reveal a significant number of micro-pores within the PG-ISB cementitious material, which are important factors affecting its strength. An empirical constitutive model for the uniaxial compression of the specimen was established based on the experimental stress-strain full curves, and the fitting curves showed good agreement with the experimental data.