再生粗细骨料混凝土受拉力学性能研究  

Study on tensile properties of recycled coarse and fine aggregate concrete

作　　者：张桂林 孙江枫 陈庞 王敬德 韩阳 ZHANG Guilin;SUN Jiangfeng;CHEN Pang;WANG Jingde;HAN Yang(State Grid Hebei Electric Power Co.,Ltd.,Construction Company,Shijiazhuang 050001,China;Hebei University of Technology,Tianjin 300130,China;Hebei Electric Power Engineering Supervision Co.,Ltd.,Shijiazhuang 050000,China)

机构地区：[1]国网河北电力有限公司建设公司,河北石家庄050001 [2]河北工业大学,天津300130 [3]河北电力工程监理有限公司,河北石家庄050000

出　　处：《混凝土》2024年第3期131-135,共5页Concrete

基　　金：国家自然科学基金(52108132);河北省自然科学基金(E2021202067);河北省高等学校科学技术研究项目(QN2021037);河北省重点研发计划项目(19275404D);中建一局(集团)有限公司科技研发子课题(KJYF-2021-26)。

摘　　要：我国城镇化迅速发展的过程中产生了大量建筑垃圾,其处理和有效利用是当前亟需解决的关键问题。为推广再生混凝土在建筑结构中有效利用,通过对国内外大量文献进行研究总结,对再生混凝土受拉强度性能开展了深入研究。首先,研究了不同再生粗骨料、再生细骨料取代率下再生混凝土抗拉强度变化规律;其次,研究了再生粗骨料、再生细骨料抗拉强度与抗压强度关系,建立了再生粗、细骨料混凝土抗拉强度预测模型,最后,研究总结了钢纤维掺量与长径比对再生粗骨料混凝土抗拉强度的影响。With the development of urbanization in China,the treatment and effective utilization of construction waste is a key problem that needs to be solved urgently.In order to promote the effective use of recycled concrete in building structures,the tensile properties of recycled concrete were studied.Firstly,the effect of the replacement rate of recycled coarse and fine aggregate on the tensile strength of concrete was studied.Secondly,the relationship between tensile strength and compressive strength of recycled coarse and fine aggregate concrete was studied,and the calculation model of tensile strength of recycled coarse and fine aggregate concrete was established.Finally,the effect of steel fiber on the tensile strength of recycled coarse aggregate concrete was studied.

关 键 词：再生细骨料 再生粗骨料 再生混凝土 钢纤维 抗拉强度 

分 类 号：TU528.041[建筑科学—建筑技术科学]