防灾减灾工程学报2011，Vol.31Issue(3)：241-246,274,7.
城市热岛效应下浅层土中混凝土的酸腐蚀试验研究
Laboratory Study on Urban Heat Island Effect on the Acid Corrosion of Concrete in Superficial Soil Layers
摘要
Abstract
This research was conducted to evaluate the concrete acid corrosion in the superficial soil layers of urban area at the higher ground temperature owing to the urban heat island effect. The compressive strength properties of concrete specimens, which were held in the situation of temperature 5 ℃, 20 ℃ and 40 ℃, acid concentration 0％, 5％ and 10％, and erosion time 30 d and 90 d were studied. And the mechanism of concrete acid corrosion and the urban heat island effect on the concrete strength in superficial soil layers for Nanjing area was analyzed. The test results indicate that the coefficient of corrosion of concrete specimens increases with the increasing of the temperature; and the temperature has an increasingly powerful influence on the coefficient of corrosion with higher acid concentration. Under the situation of sulfuric acid concentration 10 ％ and immersing time 30 d, the coefficient of corrosion of concrete specimen reaches 45.21％ at the temperature 40 ℃, which was almost twice of the corrosion coefficient at temperature 5 ℃.In other words, the coefficient of corrosion increases 0. 64％ with the rising 1 ℃ of the environment temperature. The research achievement has a clear meaning to reduce the urban heat island effect in geotechnical engineering.关键词
城市热岛效应/混凝土/酸腐蚀/抗压强度/试验研究Key words
urban heat island effect/ concrete/ acid corrosion/ compressive strength/ laboratory study分类
建筑与水利引用本文复制引用
卢毅,施斌,刘瑾,顾凯,唐朝生,高磊..城市热岛效应下浅层土中混凝土的酸腐蚀试验研究[J].防灾减灾工程学报,2011,31(3):241-246,274,7.基金项目
国家自然科学基金重点项目(40730739)、高等学校博士点基金项目(200802840018)资助 （40730739）
