硅酸盐通报2024，Vol.43Issue(6)：1975-1982,8.
硅灰热焊接改性塑料颗粒对砂浆抗压强度与微结构的影响
Effect of Silica Fume Heat-Welded Modified Plastic Particles on Compressive Strength and Microstructure of Mortar
摘要
Abstract
In order to address the issue of reduced compressive strength in plastic mortar caused by the hydrophobic nature of plastic,this study utilizes the thermoplasticity of discarded polypropylene(PP)plastic to prepare silica fume@plastic particle composite particles(SF@PP)by welding silica fume on the surface of PP through the thermal welding process and tests the hydrophilicity and volcanic ash activity of the composite particles.The results indicate that the modified plastic through silica fume heat welding improves the hydrophilicity of PP and enhances its volcanic ash activity,promoting the deposition of hydration products at the interface and increasing the compactness of the interface.Consequently,the porosity of the plastic mortar is significantly reduced,and the compressive strength is significantly increased by 26.07％to 31.04％.The results of the study are conducive to the efficient utilization of waste plastics and provide a basis for the preparation of high-performance plastic mortar.关键词
塑料/硅灰/热焊接/抗压强度/孔隙结构Key words
plastic/silica fume/heat-welded/compressive strength/pore structure分类
建筑与水利引用本文复制引用
王象庚,陈佩圆,李进,赵成,顾志成..硅灰热焊接改性塑料颗粒对砂浆抗压强度与微结构的影响[J].硅酸盐通报,2024,43(6):1975-1982,8.基金项目
国家自然科学基金(52008003) （52008003）
安徽理工大学高层次引进人才科研启动资金资助(2022yjrc27) （2022yjrc27）
安徽省高校自然科学研究项目(2023AH051171) （2023AH051171）
安徽省住房城乡建设科学技术计划项目(2022-YF071) （2022-YF071）
