荷载作用下的混凝土硫酸盐腐蚀研究  

Study on the sulfate corrosion of concrete under the action of loading

作　　者：黄战[1] 邢锋[1] 董必钦[1] 殷慧[1] 罗帅[1] 

机构地区：[1]深圳大学土木工程学院深圳市土木工程耐久性重点试验室,广东深圳518060

出　　处：《混凝土》2008年第2期66-69,共4页Concrete

基　　金：国家自然科学基金资助项目(50378055);广东省自然科学基金资助项目(04011316)

摘　　要：本试验研究了荷载作用下混凝土的硫酸盐腐蚀,采用在线测定方法对不同水灰比的混凝土试件进行了与干湿循环有关的SDF和MDF耐久性试验,研究荷载、干湿循环和硫酸盐侵蚀等破坏因素的单独作用及其复合作用对混凝土耐久性的影响规律;以相对动弹性模量为评价指标对多因素协同作用下的不同水灰比混凝土试件的抗硫酸盐侵蚀性能进行了表征,通过动弹性模量在硫酸盐侵蚀条件下的变化,探索更为实用的混凝土抗硫酸盐性能的评价方法,对防治混凝土硫酸盐侵蚀提出了一些对策。The sulfate corrosion of concrete under the action of loading was researched,using the online test method to study the durability of different W/C concrete related to dry-wet cycle affected by SDF and MDF.The influence rules of the damage fact such as the action of loading, dry-wet cycle, sulfate corrosion and the combined effects to the durability of concrete are researched.Test results are figured out with respectively dynamic modulus of elasticity.This test method provides a trusty result in an effective test period.This research simulate the corrosion process of concrete structures under corrosion circumstance and loading in engineering practice and explore more useful estimate methods of concrete members, put forward some measures to prevent the sulfate corrosion.

关 键 词：硫酸盐腐蚀 荷载作用 干湿循环 相对动弹性模量 在线测量 

分 类 号：TU528.01[建筑科学—建筑技术科学]