粗细骨料双掺对混凝土性能的影响  

IMPACT OF COARSE AND FINE AGGREGATE DUAL REPLACEMENT ON CONCRETE PERFORMANCE

作　　者：张玉栋 高玉增 李晓辰 霍刚 赵贺雷 ZHANG Yudong;GAO Yuzeng;LI Xiaochen;HUO Gang;ZHAO Helei(Hebei University of Architecture,Hebei Key Laboratory for Diagnosis,Reconstruction and Anti-disaster of Civil Engineering,Hebei Zhangjiakou 075000,China;Zhangjiakou Yiyuan Construction Waste Disposal and Comprehensive Utilization Co.,Ltd.,Hebei Zhangjiakou 075000,China)

机构地区：[1]河北建筑工程学院河北省土木工程诊断、改造与抗灾重点实验室,河北张家口075000 [2]张家口市益源建筑垃圾处置和综合利用有限公司,河北张家口075000

出　　处：《低温建筑技术》2024年第9期37-40,共4页Low Temperature Architecture Technology

基　　金：河北省高等学校科学研究项目(QN2023157);河北建筑工程学院研究生创新基金项目(XY2024078)。

摘　　要：为提高废弃混凝土的利用率,文中研究了不同替代率的再生粗骨料和再生细骨料对混凝土工作性和力学性能的影响,结果表明随着再生骨料替代率的提高,混凝土的坍落度、抗压强度、劈裂强度均有所降低,100%全替代组显示出最低的工作性和力学性能,但仍满足基本工程要求。通过优化混凝土配比和添加剂使用,可以有效提升再生骨料在混凝土中的应用潜力。试验采用不同替代率,全面研究了再生骨料混凝土的性能变化,这对推动建筑材料的可持续发展和环境保护具有重要意义。To improve the utilization of discarded concrete,this paper investigates the effects of different replacement rates of recycled coarse and fine aggregates on the workability and mechanical properties of concrete.The results indicate that as the replacement rate of recycled aggregates increases,the slump,compressive strength,and split tensile strength of the concrete decrease.The 100%replacement group exhibited the lowest workability and mechanical performance but still met basic engineering requirements.By optimizing concrete mix ratios and the use of additives,the application potential of recycled aggregates in concrete can be effectively enhanced.The study,which employs various replacement rates,provides a comprehensive analysis of the performance changes in recycled aggregate concrete and is significant for promoting the sustainable development of building materials and environmental protection.

关 键 词：天然骨料 再生骨料 再生混凝土 

分 类 号：TU528[建筑科学—建筑技术科学]