MICP修补液与传统混凝土裂缝修补材料的对比研究
|
摘要
采用微生物诱导碳酸钙沉积(MICP)修补液、环氧胶液和聚合物水泥三种不同修补材料对带裂缝(宽度为0.1mm、0.2mm)混凝土进行修补,测试修补后混凝土的力学性能和耐久性能,对比分析了不同材料的修补效果。结果表明,MICP修补液修补后可达到基准混凝土力学性能的70%,其修补效果比环氧胶液、聚合物水泥材料略差;耐久性方面MICP修补液与环氧胶液、聚合物水泥效果相当;同时综合环保性和经济性可知,MICP技术在实体桥梁混凝土裂缝修补中具有可行性。
Microbial induced carbonate precipitation(MICP), epoxy liquid and polymer cement were were used to repair the cracked concrete. Mechanical properties and durability of the repaired concrete were tested to analysis the repair effect of different materials. The results show that after repairing of MICP repair solution, the mechanical properties of concrete specimencan reach 70% of the base concretespecimen. The repair effect of MICP repair solutionis is slightly worse than that of the epoxy liquid and polymer cement materials, and the influence of three kinds on the durability of the repair materials is basically the same. At the same time, it is known that MICP technology is feasible in repairing concrete crack of bridge,by combining environmental protection efficiency and economyefficiency.
Microbial induced carbonate precipitation(MICP), epoxy liquid and polymer cement were were used to repair the cracked concrete. Mechanical properties and durability of the repaired concrete were tested to analysis the repair effect of different materials. The results show that after repairing of MICP repair solution, the mechanical properties of concrete specimencan reach 70% of the base concretespecimen. The repair effect of MICP repair solutionis is slightly worse than that of the epoxy liquid and polymer cement materials, and the influence of three kinds on the durability of the repair materials is basically the same. At the same time, it is known that MICP technology is feasible in repairing concrete crack of bridge,by combining environmental protection efficiency and economyefficiency.
引文
[1]Ghosh P,Mandal S,Chattopadhyay B D,et al.Use of microorganism to improve the strength of cement mortar[J].Cement&Concrete Research,2005,35(10):1980-1983.
[2]Muynck W D,Debrouwer D,Belie N D,et al.Bacterial carbonate precipitation improves the durability of cementitious materials[J].Cement&Concrete Research,2008,38(7):1005-1014.
[3]王立杰.环氧树脂浆液修补技术在桥梁维修中的应用[J].华东公路,2017(10):57-58.
[4]李海东.基于聚合物水泥基材料的桥梁混凝土灌缝胶浆制备[J].兰州工业学院学报,2017(8):58-61.
[5]Wiktor V,Jonkers H M.Quantification of crack-healing in novel bacteria-based self-healing concrete[J].Cement and Concrete Composites,2011,33(7):763-770.
[6]任立夫,钱春香.碳酸酐酶微生物沉积碳酸钙修复水泥基材料表面裂缝[J].硅酸盐学报.2014.42(11):1389-1395.
[7]Zhong L,Lslam M R.A new microbial plugging process and its impact on fracture remediation[C].Proc.of Society of Petroleum Engineers,Annual Technical Conference,1995:703-715.
[8]荣辉,钱春香.微生物水泥基材料抗冻性和抗冲刷性[J].功能材料,2014,45(11):11091-11095.
[9]王瑞兴,钱春香.水泥石表面微生物沉积碳酸钙覆膜的不同工艺[J].硅酸盐学报,2008,36(10):1378-1384.
[10]Hill D D,Sleep B E.Effects of biofilm growth on flow and transport through a glass parallel plate fracture[J].J Contam Hydrol,2002,56(3/4):227-246.
[2]Muynck W D,Debrouwer D,Belie N D,et al.Bacterial carbonate precipitation improves the durability of cementitious materials[J].Cement&Concrete Research,2008,38(7):1005-1014.
[3]王立杰.环氧树脂浆液修补技术在桥梁维修中的应用[J].华东公路,2017(10):57-58.
[4]李海东.基于聚合物水泥基材料的桥梁混凝土灌缝胶浆制备[J].兰州工业学院学报,2017(8):58-61.
[5]Wiktor V,Jonkers H M.Quantification of crack-healing in novel bacteria-based self-healing concrete[J].Cement and Concrete Composites,2011,33(7):763-770.
[6]任立夫,钱春香.碳酸酐酶微生物沉积碳酸钙修复水泥基材料表面裂缝[J].硅酸盐学报.2014.42(11):1389-1395.
[7]Zhong L,Lslam M R.A new microbial plugging process and its impact on fracture remediation[C].Proc.of Society of Petroleum Engineers,Annual Technical Conference,1995:703-715.
[8]荣辉,钱春香.微生物水泥基材料抗冻性和抗冲刷性[J].功能材料,2014,45(11):11091-11095.
[9]王瑞兴,钱春香.水泥石表面微生物沉积碳酸钙覆膜的不同工艺[J].硅酸盐学报,2008,36(10):1378-1384.
[10]Hill D D,Sleep B E.Effects of biofilm growth on flow and transport through a glass parallel plate fracture[J].J Contam Hydrol,2002,56(3/4):227-246.