Properties of high ductility cementitious composites for repair

被引：0
|
作者：
Guo L. [1 ,2 ]
Chen B. [3 ]
Sun W. [1 ]
Zhang W. [3 ]
机构：
[1] School of Materials Science and Engineering, Southeast University, Nanjing
[2] Jiangsu Key Laboratory of Construction Materials, Nanjing
[3] State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing
来源：
Chen, Bo (bchen@nhri.cn) | 2018年 / Science Press卷 / 39期
关键词：
Adhesive tensile strength; Bending toughness; Drying shrinkage; High ductility cementitious composites; Permeability; Repair; Uniaxial tension;
D O I：
10.14006/j.jzjgxb.2018.07.020
中图分类号：
学科分类号：
摘要：
In order to investigate properties of high ductility cementitious composites (HDCC) for repair, which is made with domestic polyvinyl alcohol (PVA) fiber and normal river sand, three series HDCC with different strength grades were prepared. Experiments were carried out to study HDCC properties, such as mechanical properties, bending toughness, uniaxial tensile properties, drying shrinkage, relative permeability coefficient and adhesive tensile strength. Test results show that HDCCs with 2% (volumetric ratio) of PVA fibers have excellent bending toughness, ultimate tensile strain greater than 1.75% and obvious strain hardening and multi-cracking. HDCCs' drying shrinkage develops rapidly during the first 14 days and tends to be stable after 28 days. Relative permeability coefficient of HDCC decreases as the age increases. Adhesive tensile strength between HDCC and substrate ranges from 3.0 to 4.1 MPa, and increases with HDCC compressive strength. © 2018, Editorial Office of Journal of Building Structures. All right reserved.
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页码：169 / 174
页数：5
相关论文
共 10 条
  • [1] Li V.C., Progress and application of engineered cementitious composites, Journal of the Chinese Ceramic Society, 35, 4, pp. 531-536, (2007)
  • [2] Kojima S., Sakata N., Kanda T., Et al., Application of direct sprayed ECC for retrofitting dam structure surface-application for Mitaka-Dam, Concrete Journal, 42, 5, pp. 135-139, (2004)
  • [3] Kunieda M., Rokugo K., Recent progress on HPFRCC in Japan required performance and applications, Journal of Advanced Concrete Technology, 4, 1, pp. 19-33, (2006)
  • [4] Mechtcherine V., Novel cement-based composites for the strengthening and repair of concrete structures, Construction & Building Materials, 41, 4, pp. 365-373, (2013)
  • [5] Li V.C., High performance fiber reinforced cementitious composites as durable material for concrete structure repair, International Journal for Restoration, 10, 2, pp. 163-180, (2004)
  • [6] Zhang J., Wang Z., Ju X., Application of ductile fiber reinforced cementitious composite in jointless concrete pavements, Composites Part B: Engineering, 50, 7, pp. 224-231, (2013)
  • [7] Lepech M.D., Li V.C., Application of ECC for bridge deck link slabs, Materials & Structures, 42, 9, pp. 1185-1195, (2009)
  • [8] Gencturk B., Hosseini F., Evaluation of reinforced concrete and reinforced engineered cementitious composite (ECC) members and structures using small-scale testing, Canadian Journal of Civil Engineering, 42, 3, pp. 164-177, (2015)
  • [9] Deng M., Zhang Y., Hu H., Experimental study on seismic behavior of reinforced concrete column strengthened with high ductile concrete, Journal of Building Structures, 38, 6, pp. 86-94, (2017)
  • [10] Guo L., Chen B., Sun W., Et al., Effect of expensive agent on mechanical properties and deformation behavior of high ductility cementitious composites, Journal of the Chinese Ceramic Society, 44, 11, pp. 1609-1613, (2016)
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