深圳大学学报（理工版）2024，Vol.41Issue(1)：66-73,8.DOI:10.3724/SP.J.1249.2024.01066
玻璃砂超高性能水泥基复合材料的制备及性能
Preparation and properties of glass sand ultra-high performance cementitious composites
摘要
Abstract
To achieve sustainability and environmental protection capability of ultra-high-performance cementitious composite(UHPCC),glass sand(GS)was used to replace river sand in UHPCC to produce glass sand ultra-high-performance cementitious composite(GS-UHPCC).The effects of different glass sand substitution rates and particle sizes on the compressive and bending properties of GS-UHPCC were investigated through mechanical property tests,the bending toughness and energy absorption capacity were quantitatively characterized as well.In addition,the X-ray diffraction and scanning electron microscopy methods were used to analyze the toughening mechanism of the glass sand.The results show that replacing river sand with glass sand with an average particle size of 0.27 mm is the most effective at a substitution rate of 40%.After substitution,the compressive strength of GS-UHPCC increased by 17.0%,and the flexural strength increased by 14.8%compared to the unaltered mixture after 28 days of curing.The energy absorption capacity was optimal,and the microstructure was dense,and the hydration reaction was almost complete.The optimal glass sand substitution rate and particle size obtained in this study can provide feasible support for the application of GS-UHPCC.关键词
混凝土/超高性能水泥基复合材料/玻璃砂/力学性能/水化反应/火山灰效应/能量吸收能力Key words
concrete/ultra-high performance cementitious composite/glass sand/mechanical properties/hydration reaction/pozzolanic effect/energy absorption capacity分类
建筑与水利引用本文复制引用
张亚芳,曾科,包嗣海,段莉斌,张维健..玻璃砂超高性能水泥基复合材料的制备及性能[J].深圳大学学报（理工版）,2024,41(1):66-73,8.基金项目
National Natural Science Foundation of China(52278250) 国家自然科学基金资助项目(52278250) （52278250）
