文献类型：期刊文献

中文题名：磷石膏基异形砖胶凝材料(GM-ISB)制备及单轴受压本构关系

英文题名：Preparation and Uniaxial Compressive Performance of Cementitious Material for Special-shaped Brick Masonry in Underground Retaining Walls(GM-ISB)

作者：张燕 何珍 黄云 邓兴辉 王志发 徐桂弘

第一作者：张燕

机构：[1]贵州磷化绿色环保产业有限公司,贵州贵阳550025;[2]重庆交通大学土木工程学院,重庆400056;[3]贵州理工学院土木工程学院,贵州贵阳550025

第一机构：贵州磷化绿色环保产业有限公司,贵州贵阳550025

年份：2026

期号：2

起止页码：34-40

中文期刊名：贵州农机化

基金：贵阳市科技计划项目(筑科合同〔2024〕-1-8;国家自然科学基金(52268065);贵州省科技计划项目(黔科合基础-ZK〔2022〕重点027);黔科合平台人才(GCC〔2023〕053))。

语种：中文

中文关键词：砌筑挡墙异形砖胶凝材料;无水石膏;混凝土单轴压缩;本构模型

外文关键词：cementitious material for special-shaped brick masonry in underground retaining walls(GM-ISB);anhydrous gypsum;uniaxial compression of concrete;constitutive model

摘要：以Ⅱ型无水石膏、钙粉、胶凝剂、建筑砖渣等为原料制备井下充填挡墙异型砖砌体,研究该胶凝材料的力学性能,通过XRD、扫描电镜分析了体系的水化产物、微观形貌和元素组成,基于试验应力-应变关系曲线建立了该胶凝材料的本构模型。研究结果表明,GM-ISB胶凝材料抗压强度满足充填挡墙的需求。通过扫描电镜观测到GM-ISB胶凝材料内部有大量的微观孔隙结构,指出这些微孔隙结构的存在是影响GM-ISB胶凝材料强度的重要因素。根据实测试件单轴受压应力-应变全曲线建立了试件单轴受压经验本构模型,其应力—应变拟合曲线与试验曲线具有较好的拟合效果。
This study developed a GM-ISB cementitious material,composed of Type II anhydrous gypsum,calcium powder,cementitious agents,and construction slag,for use in special-shaped brick masonry for underground retaining walls.The mechanical properties of the material were investigated through XRD and SEM analysis of its hydration products,microstructural morphology,and elemental composition.A constitutive model was established based on experimental stress-strain curves.The results indicate that the GM-ISB cementitious material meets the compressive strength requirements for retaining wall applications.SEM observations revealed a significant presence of microporous structures within the material,demonstrably influencing its strength.An empirical constitutive model was developed based on the complete uniaxial compressive stress-strain curves of tested specimens,with the fitted curve exhibiting excellent agreement with the experimental data.