ZHU Fangzhi, MA Zhiming, ZUO Gong, GAO Li. EXPERIMENTAL STUDY ON MECHANICAL PROPERTIES OF SLEEVE SPLICING GROUTED WITH PVA FIBER-REINFORCED CEMENTITIOUS COMPOSITES[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(1): 152-156,178. doi: 10.13204/j.gyjzG19102204
Citation:
ZHU Fangzhi, MA Zhiming, ZUO Gong, GAO Li. EXPERIMENTAL STUDY ON MECHANICAL PROPERTIES OF SLEEVE SPLICING GROUTED WITH PVA FIBER-REINFORCED CEMENTITIOUS COMPOSITES[J]. INDUSTRIAL CONSTRUCTION , 2021, 51(1): 152-156,178. doi: 10.13204/j.gyjzG19102204
ZHU Fangzhi, MA Zhiming, ZUO Gong, GAO Li. EXPERIMENTAL STUDY ON MECHANICAL PROPERTIES OF SLEEVE SPLICING GROUTED WITH PVA FIBER-REINFORCED CEMENTITIOUS COMPOSITES[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(1): 152-156,178. doi: 10.13204/j.gyjzG19102204
Citation:
ZHU Fangzhi, MA Zhiming, ZUO Gong, GAO Li. EXPERIMENTAL STUDY ON MECHANICAL PROPERTIES OF SLEEVE SPLICING GROUTED WITH PVA FIBER-REINFORCED CEMENTITIOUS COMPOSITES[J]. INDUSTRIAL CONSTRUCTION , 2021, 51(1): 152-156,178. doi: 10.13204/j.gyjzG19102204
EXPERIMENTAL STUDY ON MECHANICAL PROPERTIES OF SLEEVE SPLICING GROUTED WITH PVA FIBER-REINFORCED CEMENTITIOUS COMPOSITES
1. School of Civil Engineering and Architecture, Suqian College, Suqian 223800, China;
2. College of Civil Science and Engineering, Yangzhou University, Yangzhou 225127, China
Received Date: 2020-07-02Available Online:
2021-04-30
Abstract
According to test results of pull-out tests for 6 specimens and uniaxial tensile tests for 27 grouted sleeve-splicing specimens,the influences of PVA fiber, anchorage length of rebars and with or without confines of grouted sleeves on splicing were analyzed. The results showed that the addition of PVA fiber could improve the bonding strength between the unconfined rebars and grouting materials, but had not obvious impact on the properties of grouted sleeve splicing. The rigidity of grouted sleeve splicing increased with the increase of anchorage length and the load-displacement curves was also more smoother. When the strength of the grouting materials was up to 85 to 90 MPa, the anchorage length of six times diameter of rebars could well meet the strength requirement of the grouted sleeve splicing. The constraint of sleeves could improve the bonding strength of the sleeves, grouting materials and rebars.
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