GFRP管约束海砂再生混凝土轴压性能试验研究  

Experimental study on the GFRP tube confined sea sand recycled concrete under axial compression

作　　者：李明盛 黄一杰[2] Li Mingsheng;Huang Yijie(Shandong Xinda Construction Engineering Limited Company,Jinan 250101,China;Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation,Shandong University of Science and Technology,Qingdao 266590,China)

机构地区：[1]山东信达建设工程有限公司,山东济南250101 [2]山东科技大学山东省土木工程防灾减灾重点实验室,山东青岛266590

出　　处：《山西建筑》2019年第18期94-96,共3页Shanxi Architecture

摘　　要：通过GFRP管约束海砂再生混凝土短柱轴压试验,分析了海砂氯离子浓度与再生骨料取代率对试件受力性能影响。研究表明:GFRP管约束海砂再生混凝土的破坏模式为混凝土压碎、GFRP管断裂。再生粗骨料取代率和海砂氯离子含量越高试件承载力越小。而峰值变形随再生粗骨料含量的增加而增大,随海砂氯离子含量的提高而降低。最后,基于试验结果总结了GFRP管约束海砂再生混凝土的受力特点,所得结果为海砂再生混凝土构件的推广应用提供了基础。Typical influences of sea sand chloride ion content (CIC) and recycled coarse aggregate (RCA) replacement percentage on the mechanical properties of GFRP tube confined sea sand recycled concrete (FCSSRC) were studied by axial compression test. It was found that the failure pattern of FCSSRC was the core concrete crushing and the fracture of GFRP tube. The bearing capacity decreased with increasing RCA replacement percentage and sea sand CIC. However,the peak deformation increased with the increase of RCA replacement percentage and the decrease of sea sand CIC. Finally,the mechanical properties of FCSSRC were analyzed by test results. The obtained results would provide a basis for the application of sea sand recycled concrete.

关 键 词：GFRP管约束海砂再生混凝土 受力性能 承载力 峰值应变 

分 类 号：TU528[建筑科学—建筑技术科学]