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| Bond behavior of magnesium phosphate cement matrix and glass fiber bar |
| 1.Department of Architectural Engineering, Jiangsu Radio and TV University, Nanjing, Jiangsu 210019, China; 2.Nanjing Construction Group Co., Ltd.， Nanjing, Jiangsu 200012, China; 3.College of Civil and Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu 224051, China |
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Abstract Bond behaviors of magnesium phosphate cement (MPC) matrix with glass fiber bundle (GFB) were investigated through measuring pullout force of GFB in MPC. The results show that the selfmade inorganic adhesive can permeate into glass fibrils with markedly improved axial tensile strength of GFB.The pullout force of GFB can be increased by mixing magnesium oxide powder. The micro structure of MPC paste is compacted by water glass to achieve pullout force of GFB. The pullout force can be effectively improved by the increasing of GFB length and MPC age. It can be confirmed that the optimized embedded length of GFB would exist and the maximum pullout forces could be achieved in pullout destructive form. The pullout force of GFB in MPC matrix with optimized embedded length is greater than that in epoxy resin matrix.
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2012, Vol. 33 
