DSP强化与预处理的再生骨料混凝土强度及破坏机理分析  

STRENGTH AND FAILURE MECHANISM ANALYSIS OF RECYCLED AGGREGATE CONCRETE IMPROVED BY DSP GROUT

作　　者：张学兵[1,2] 方志[1] 郭雪怡[1] 徐晓伟[1] 唐卓[1] 樊萱[1] 匡成钢[2] 

机构地区：[1]湖南大学土木工程学院,长沙410082 [2]湘潭大学土木工程与力学学院,湖南湘潭411105

出　　处：《工业建筑》2012年第4期15-20,共6页Industrial Construction

基　　金：国家自然科学基金资助项目(50678063);2011年"国家级大学生创新性实验计划"项目;湖南大学2011年度大学生创新性实验和创新训练(SIT)计划重点项目

摘　　要：研究DSP浆液预处理再生骨料混凝土的强度和直接在组分中加入DSP浆液强化再生混凝土的强度,并与基准再生混凝土进行对比。试验结果表明,无论是立方体抗压强度,还是棱柱体抗压强度,DSP浆液强化再生混凝土的强度均为最高,比基准再生混凝土棱柱体强度提高25.6%(或26.7%);而对于DSP浆液预处理再生骨料混凝土,7 d立方体抗压强度高于基准再生混凝土,28 d立方体抗压强度则低于基准再生混凝土,28 d棱柱体抗压强度则各有高低。并对再生混凝土的破坏机理进行了分析。The strength of recycled concrete was studied whose recycled coarse aggregate was preprocessed by DSP grout.At the same time,the strength of recycled concrete added DSP grout as part of the concrete directly in the mixing process was also studied,but also with a comparison of the basic recycled concrete.The results show that for the cube compressive strength and prism compressive strength,the strength of recycled concrete improved by DSP grout is the highest,respectively,increased by 25.6%（or 26.7%） as compared to the prism compressive strength of the basic recycled concrete.And for DSP grout pretreatment recycled aggregate concrete,7 d cube compressive strength is higher than the basic recycled concrete,28 d cube compressive strength is lower than the basic recycled concrete,28d prism compressive strength is high and low.In addition,the failure mechanism of the recycled concrete is analyzed.

关 键 词：DSP浆液 处理工艺 抗压强度 破裂面 界面 破坏机理 

分 类 号：TU528[建筑科学—建筑技术科学]