混凝土的微生物腐蚀:机理、影响因素、评价指标及防护技术  

Microbial-induced Corrosion of Concrete:Mechanism,Influencing Factors,Evaluation Indices,and Proventive Techniques

作　　者：高礼雄 丁汝茜 姚燕[2] 荣辉 王海良 张磊 GAO Lixiong;DING Ruqian;YAO Yan;RONG Hui;WANG Hailiang;ZHANG Lei(School of Materials Science and Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043;China Building Materials Academy,Beijing 100024;School of Materials Science and Engineering,Tianjin Chengjian University,Tianjin 300384;Tianjin Key Laboratory of Civil Structure Protection and Reinforcement,Tianjin 300384;State Key Laboratory of High Performance Civil Engineering Materials,Nanjing 210008)

机构地区：[1]石家庄铁道大学材料科学与工程学院,石家庄050043 [2]中国建筑材料科学研究总院,北京100024 [3]天津城建大学材料科学与工程学院,天津300384 [4]天津市建筑结构防护与加固重点实验室,天津300384 [5]高性能土木工程材料国家重点实验室,南京210008

出　　处：《材料导报》2018年第3期503-509,共7页Materials Reports

基　　金：国家重点研发计划(2016YFB0303503);天津市自然科学基金重点项目(16JCZDJC39100);高性能土木工程材料国家重点实验室开放基金(2014CEM002)

摘　　要：混凝土的微生物腐蚀不仅会使混凝土中的氢氧化钙与微生物新陈代谢形成的生物硫酸发生反应生成石膏和钙矾石,而且会使混凝土中的水化硅酸钙(C-S-H)发生分解,生成不溶且无胶结作用的胶体,从而造成混凝土性能的劣化。因此,本文从混凝土的微生物腐蚀机理、影响因素(材料和环境)、评价指标(腐蚀速率、H2S吸收速率、化学成分)和防护技术(混凝土改性、保护涂层和生物灭杀技术)等方面详细阐述了国内外混凝土的微生物腐蚀研究现状,以期引起国内学者对混凝土微生物腐蚀的关注。The microbial corrosion of concrete not only causes the calcium hydroxide in the concrete to react with the biogenic sulfuric acid formed by the microbial metabolism to form gypsum and ettringite,but also decomposes the C-S-H in the concrete to produce insoluble and non-cementation colloids,therefore the performance of concrete will be degradated gradually.The development of microbial corrosion,including the aspects of microbial corrosion mechanism,influencing factors(materials and environmental factors),evaluation index(corrosion rate,H 2S absorption rate,chemical composition)and preventive techniques(concrete modification,protective coating and biological killing technique)of concrete are elaborated in this paper to raise the concern of domestic scho-lars on the microbial-induced corrosion of concrete.

关 键 词：微生物 混凝土 腐蚀机理 影响因素 评价指标 

分 类 号：TU528[建筑科学—建筑技术科学]