Experiment on non-damaged RC beams strengthened by high-strength steel wire strand meshes reinforced ECC in bending

LI Ke; ZHAO Jiali; LI Zhiqiang; ZHU Juntao

doi:10.13801/j.cnki.fhclxb.20210816.004

Volume 39 Issue 7

Jul. 2022

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Article Navigation > Acta Materiae Compositae Sinica > 2022 > 39(7): 3428-3440

LI Ke, ZHAO Jiali, LI Zhiqiang, et al. Experiment on non-damaged RC beams strengthened by high-strength steel wire strand meshes reinforced ECC in bending[J]. Acta Materiae Compositae Sinica, 2022, 39(7): 3428-3440. doi: 10.13801/j.cnki.fhclxb.20210816.004

Citation:

LI Ke, ZHAO Jiali, LI Zhiqiang, et al. Experiment on non-damaged RC beams strengthened by high-strength steel wire strand meshes reinforced ECC in bending[J]. Acta Materiae Compositae Sinica, 2022, 39(7): 3428-3440. doi: 10.13801/j.cnki.fhclxb.20210816.004

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Experiment on non-damaged RC beams strengthened by high-strength steel wire strand meshes reinforced ECC in bending

doi: 10.13801/j.cnki.fhclxb.20210816.004

1.
School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, China
2.
China Construction Yipin Investment & Development Co., Ltd., Wuhan 430070, China

Received Date: 2021-06-18
Accepted Date: 2021-07-28
Rev Recd Date: 2021-07-23

Available Online: 2021-08-17

Publish Date: 2022-07-30

Abstract

Abstract

In order to study the flexural performance of reinforced concrete (RC) beams strengthened by high-strength steel wire strand (HSSWS) meshes reinforced engineered cementitious composites (ECC), the bending tests were performed on seven non-damaged RC beams considering the influence factors such as the steel strand diameter, the longitudinal steel strand reinforcement rate, formula of ECC and end anchorage. The results show that under the condition of using reasonable anchorage measures at the end of the reinforcement layer, the bearing capacity, ductility and crack-control capacity of RC beams strengthened by HSSWS meshes reinforced ECC in bending can be significantly improved, and the crack development of the original RC beam can be effectively delayed, which results in reducing crack width. The increase of longitudinal HSSWS reinforcement rate will improve the cracking load, bearing capacity, crack-control capacity and stiffness of the strengthened beams in bending, but excessive HSSWS reinforcement rate of the strengthened beams would reduce the ductility and toughness. When the reinforcement ratio of longitudinal HSSWS is close, the ductility, toughness and crack-control ability of strengthened beams would be reduced to some extent by using the HSSWS with relative large diameter. The cracking load, bearing capacity and stiffness of strengthened beams in bending increase with the increases of elastic modulus and tensile strength of ECC. The crack-control ability, ductility and toughness of strengthened beams increase with the increase of ultimate tensile strain of ECC.
- high-strength steel wire strand (HSSWS) meshes reinforced ECC,
- structural reinforcement,
- reinforced concrete beam,
- flexural performance,
- experimental study
Long Abstrsct
Innovation Points

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References(20)

References

[1]	LIN Z, LI V C. Crack bridging in fiber reinforced cementitious composites with slip-hardening interfaces[J]. Journal of the Mechanics & Physics of Solids,1997,45(5):763-787.
[2]	徐世烺, 李贺东. 超高韧性水泥基复合材料直接拉伸试验研究[J]. 土木工程学报, 2009, 42(9):32-41. doi: 10.3321/j.issn:1000-131X.2009.09.005 XU Shilang, LI Hedong. Uniaxial tensile experiments of ultra-high toughness cementitous composite[J]. China Civil Engineering Journal,2009,42(9):32-41(in Chinese). doi: 10.3321/j.issn:1000-131X.2009.09.005
[3]	MENG D, HUANG T, ZHANG Y X. Mechanical behaviour of a polyvinyl alcohol fibre reinforced engineered cementitious composite (PVA-ECC) using local ingredients[J]. Construction and Building Materials,2017,141:259-270. doi: 10.1016/j.conbuildmat.2017.02.158
[4]	徐世烺, 李贺东. 超高韧性水泥基复合材料研究进展及其工程应用[J]. 土木工程学报, 2008(6):45-60. doi: 10.3321/j.issn:1000-131X.2008.06.008 XU Shilang, LI Hedong. A review on the development of research and application of ultra high toughness cementitious composites[J]. China Civil Engineering Journal,2008(6):45-60(in Chinese). doi: 10.3321/j.issn:1000-131X.2008.06.008
[5]	王勃, 鲁文清, 周柏成, 等. 聚乙烯醇纤维水泥砂浆加固技术的研究[J]. 四川建筑, 2016, 36(4):181-182. doi: 10.3969/j.issn.1007-8983.2016.04.066 WANG Bo, LU Wenqing, ZHOU Bocheng, et al. Study on reinforcement technology of polyvinyl alcohol fiber cement mortar[J]. Sichuan Architecture,2016,36(4):181-182(in Chinese). doi: 10.3969/j.issn.1007-8983.2016.04.066
[6]	卜良桃, 万长胜, 尹鹏. PVA-ECC加固RC足尺梁受弯性能试验研究[J]. 湖南大学学报(自然科学版), 2010, 37(1):5-10. BU Liangtao, WAN Changsheng, YIN Peng. Experimental study of full-scale RC beam reinforced by polyvinyl alcohol-engineered cementitious composite mortar in flexure[J]. Journal of Hunan University (Natural Sciences),2010,37(1):5-10(in Chinese).
[7]	马益标. 聚乙烯醇纤维砂浆钢筋网加固梁受力性能研究[D]. 长沙: 湖南大学, 2018. MA Yibiao. Research on RC beam reinforced by polyvinyl alcohol-engineered cementitious composite steel mesh[D]. Changsha: Hunan University, 2018 (in Chinese).
[8]	ZHENG Y Z, WANG W W, BRIGHAM J C. Flexural behaviour of reinforced concrete beams strengthened with a composite reinforcement layer: BFRP grid and ECC[J]. Construction & Building Materials,2016,115:424-437.
[9]	郑宇宙. FRP格栅增强ECC复合加固混凝土梁试验与计算方法研究[D]. 南京: 东南大学, 2018. ZHENG Yuzhou. Experiment and calculation method research on reinforced concrete (RC) beams strengthened with the composite of FRP grid and ECC[D]. Nanjing: Southeast University, 2018 (in Chinese).
[10]	王新玲, 陈永杰, 钱文文, 等. 高强不锈钢绞线网增强工程水泥基复合材料弯曲性能试验[J]. 复合材料学报, 2021, 38(4):1292-1301. WANG Xinling, CHEN Yongjie, QIAN Wenwen, et al. Experimental on bending performance of engineered cementitious composites reinforced by high-strength stainless steel wire strand mesh[J]. Acta Materiae Compositae Sinica,2021,38(4):1292-1301(in Chinese).
[11]	王新玲, 罗鹏程, 钱文文, 等. 高强不锈钢绞线网增强工程水泥基复合材料薄板受弯承载力研究[J]. 建筑结构学报, 2022, 43(1):164-172. doi: 10.14006/j.jzjgxb.2020.0155 WANG Xinling, LUO Pengcheng, QIAN Wenwen, et al. Study on flexural bearing capacity of high strength stainless steel wire strand mesh reinforced ECC thin plate[J]. Journal of Building Structures,2022,43(1):164-172(in Chinese). doi: 10.14006/j.jzjgxb.2020.0155
[12]	中华人民共和国住房和城乡建筑部. 混凝土结构设计规范: GB 50010—2010[S]. 北京: 中国建筑工业出版社, 2010. Ministry of Housing and Urban-Rural Development of the People's Republic of China. Code for design of concrete structures: GB 50010—2010[S]. Beijing: China Architecture & Building Press, 2010 (in Chinese).
[13]	LI K, LIU W K, ZHANG K, et al. Bond behavior of stainless-steel wire ropes embedded in engineered cementitious composites[J]. Construction and Building Materials, 2021, 281: 122622.
[14]	中华人民共和国住房和城乡建设部. 钢绞线网片聚合物砂浆加固技术规程: JGJ 337—2015[S]. 北京: 中国建筑工业出版社, 2015. Ministry of Housing and Urban-Rural Development of the People’s Republic of China. Technical specification for strengthening of building structures with steel stranded wire mesh and polymer mortar: JGJ 337—2015[S]. Beijing: China Architecture & Building Press, 2015(in Chinese).
[15]	程佳佳, 何明胜, 李玉成, 等. 不同锚具锚固高强钢绞线性能的分析[J]. 石河子大学学报(自然科学版), 2020, 38(2):199-205. CHENG Jiajia, HE Mingsheng, LI Yucheng, et al. Analysis on the performance of steel strand with different anchorage device[J]. Journal of Shihezi University (Natural Science),2020,38(2):199-205(in Chinese).
[16]	中华人民共和国住房和城乡建设部. 混凝土结构试验方法标准: GB/T 50152—2012[S]. 北京: 中国建筑工业出版社, 2012. Ministry of Housing and Urban-Rural Development of the People’s Republic of China. Standard for test method of concrete structures: GB/T 50152—2012[S]. Beijing: China Architecture & Building Press, 2012 (in Chinese).
[17]	林加惠. 钢绞线网片-聚合物砂浆加固RC梁受弯性能试验研究[D]. 厦门: 华侨大学, 2014. LIN Jiahui. Experimental study on the flexural behavior of RC beams strengthened with stranded wire mesh and polymer mortar[D]. Xiamen: Huaqiao University, 2014(in Chinese).
[18]	赵国藩. 高等钢筋混凝土结构学[M]. 北京: 机械工业出版社, 2005. ZHAO Guofan. Higher reinforced concrete structure[M]. Beijing: China Machine Press, 2005(in Chinese).
[19]	DONG S F, ZHOU D C, ASHRAF A. Flexural toughness and calculation model of super-fine stainless wire reinforced reactive powder concrete[J]. Cement and Concrete Composites,2019,104:103367.
[20]	黄华. 高强不锈钢绞线网-聚合物砂浆加固钢筋混凝土梁式桥试验研究与机理分析[D]. 西安: 长安大学, 2008. HUANG Hua. Experimental study and theoretical analysis on strengthening RC girder bridge with steel wire mesh and polymer mortar[D]. Xi'an: Chang’an University, 2018 (in Chinese).