不同载体载入微生物对混凝土修复性能的影响研究  

On Influence of Microorganism Loaded with Different Carriers on Concrete Repair Performance

作　　者：戴煜伦 谢春燕[1] 符超 柳京 吴达科[1] DAI Yulun;XIE Chunyan;FU Chao;LIU Jing;WU Dake(College of Engineering and Technology, Southwest University, Chongqing 400715, China)

机构地区：[1]西南大学工程技术学院,重庆400715

出　　处：《西南师范大学学报（自然科学版）》2021年第12期95-100,共6页Journal of Southwest China Normal University(Natural Science Edition)

基　　金：中央高校基本科研业务费(XDJK2018C038,XDJK2013B014);重庆市技术创新与应用发展项目(cstc2019jscx-gksbX0158).

摘　　要：本文采用陶粒、活性炭颗粒、硅藻土3种多孔材料作为微生物载体,从力学性能和耐久性方面对带裂缝的微生物混凝土的自修复进行了研究并筛选出性能更好的载体.结果表明:陶粒提高混凝土性能最有效,抗压与抗折强度分别提高了9.14%,17.19%,活性炭对混凝土性能提升一般,抗压与抗折强度分别提升了5.3%,9.43%,而硅藻土对混凝土力学性能影响较小,抗压与抗折强度分别提升了4.22%,5.47%;3种载体均降低了混凝土的吸水率,均提高了混凝土耐久性,同时固菌载体使得混凝土吸水率大幅度降低;3种载体中陶粒修复性能最佳,宜用作混凝土裂缝修复.In this paper,three kinds of porous materials,ceramsite,activated carbon particles and diatomite,were used as microbial carriers to study the self-repair of microbial concrete with cracks from the aspects of mechanical properties and durability,and the carriers with better performance were screened out.The results show that the ceramsite is the most effective to improve the concrete properties,and the compressive strength and bending strength increased by 9.14%and 17.19%,respectively.Activated carbon has a general improvement of concrete properties,the compressive strength and bending strength increased by 5.3%and 9.43%,respectively.Diatomite has little effect on the mechanical properties of concrete,the compressive strength and bending strength increased by 4.22%and 5.47%,respectively.The three kinds of carriers all reduce the water absorption of concrete and improve the durability of concrete,while the solid bacteria carrier makes the water absorption of concrete greatly reduce.Among the three carriers,ceramsite has the best repair performance and is suitable for the repair of concrete cracks.

关 键 词：载体 微生物 裂缝 混凝土 陶粒 硅藻土 活性炭 

分 类 号：TU502[建筑科学—建筑技术科学]