[1]丁铸,孙晨,戴梦希.磷酸盐水泥砂浆作为锚固胶的性能研究[J].深圳大学学报理工版,2018,35(2):132-138.[doi:10.3724/SP.J.1249.2018.02132]
　DING Zhu,SUN Chen,and DAI Mengxi.Properties of phosphate cement mortar as an anchorage adhesive[J].Journal of Shenzhen University Science and Engineering,2018,35(2):132-138.[doi:10.3724/SP.J.1249.2018.02132]
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磷酸盐水泥砂浆作为锚固胶的性能研究()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第35卷
期数:
2018年第2期
页码:
132-138
栏目:
土木建筑工程
出版日期:
2018-03-20

文章信息/Info

Title:
Properties of phosphate cement mortar as an anchorage adhesive
文章编号:
201802004
作者:
丁铸1; 孙晨1; 戴梦希2
1）深圳大学土木工程学院，广东省滨海土木工程耐久性重点实验室，广东深圳 518060
2）深圳市大鹏新区大鹏办事处，广东深圳 518116
Author(s):
DING Zhu1;  SUN Chen1;  and DAI Mengxi2
1) School of Civil Engineering, Guangdong Key Laboratory of Durability of Civil Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P.R.China
2) Dapeng Office of Dapeng New District, Shenzhen 518116, Guangdong Province, P.R.China
关键词:
建筑材料; 磷酸盐砂浆; 锚固深度; 锚固性能; 锚固胶; 临界锚固深度
Keywords:
building materials;  phosphate cement mortar;  anchorage depth;  anchorage property;  anchorage binder;  the critical depth of anchorage
分类号:
TU 528
DOI:
10.3724/SP.J.1249.2018.02132
文献标志码:
A
摘要:
有机锚固胶与旧混凝土具有较高的黏结强度，但是两者的界面相容性较差. 而且有机锚固胶不耐高温，因此不能用于高温环境下的工程加固. 为了克服有机锚固胶存在的问题，对磷酸盐水泥（magnesium phosphate cement, MPC）进行改性，使其成为一种新型锚固胶. 制备了工作性能适宜锚固要求的MPC砂浆，通过钢筋拔出实验研究锚固深度对磷酸盐水泥砂浆胶锚固性能的影响，根据植筋锚固施工工艺和拉拔技术要求在现场对MPC砂浆进行了植筋实验.研究表明，临界锚固深度为钢筋直径的17.5倍时，在临界锚固深度范围内，拉拔力与锚固深度为非线性函数关系；大于临界锚固深度时，拉拔力不再增长.现场实验中带肋钢筋达到屈服，体现了MPC砂浆优良的植筋锚固性能.
Abstract:
Organic anchoring adhesives have high binding strength with the concrete substrate, but poor interfacial compatibility. They cannot be used in structure reinforcement in high temperature environments due to poor high temperature resistance. In order to overcome the problems of organic binders, we modify the magnesium phosphate cement （MPC）to obtain a new type of anchoring adhesive by studying the effect of anchoring depth on the anchorage performance of MPC mortar. We test the anchoring effect of MPC mortar in the field according to both construction and drawing technology. The results show that the critical anchorage depth of steel bars in MPC mortar is 17.5 times the diameter of steel bars. In the range of critical anchorage depth, the relationship between the pulling force and the depth of anchorage is nonlinear. When anchor depth is larger than the critical value, the pulling force will no longer grow. In the field experiment, the ribbed steel bar is yielded, which embodies the excellent anchoring performance of MPC mortar.

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备注/Memo

备注/Memo:
Received：2017-08-31；Accepted：2018-01-05
Foundation：National Natural Science Foundation of China (51172146，51472163)
Corresponding author：Professor DING Zhu．E-mail: zding@szu.edu.cn
Citation：DING Zhu，SUN Chen，DAI Mengxi. Properties of phosphate cement mortar as an anchorage adhesive［J］. Journal of Shenzhen University Science and Engineering, 2018, 35(2): 132-138.（in Chinese）
基金项目：国家自然科学基金资助项目（51172146，51472163）
作者简介：丁铸(1962—)，男，深圳大学教授．研究方向：先进土木工程材料．E-mail：zding@szu.edu.cn
引文：丁铸，孙晨，戴梦希.磷酸盐水泥砂浆作为锚固胶的性能研究［J］. 深圳大学学报理工版，2018，35(2)：132-138.
更新日期/Last Update: 2018-03-07