摘要
为获得昆明地区混凝土结构受酸雨侵蚀的情况,对市区主要混凝土结构进行了调查,调查对象包括混凝土房屋建筑、桥梁、变电站和电杆等结构。结果表明混凝土结构受到不同程度的酸雨侵蚀,部分结构老化较为严重,一些结构使用时间仅10年左右;针对大量老化部位的腐蚀形态进行比较分析,总结出酸雨对混凝土腐蚀的外在特征,即溶蚀、结晶、结石钟乳和盐霜等形式,不同的雨水作用方式表现出不同的腐蚀特征;结合调研结果,总结评价了几种常见抵抗酸雨侵蚀措施。
To understand material degradation of RC structures under acid rain environment in Kunming, Yunnan province, a field investigation was carried out.The structures involved in the investigation covered the concrete buildings, bridges, power stations and telegraph poles.The results show that these structures had been decayed by acid rain to some extent and some of them are in poor condition, of which a considerable mount had only serviced about ten years.Based on comparison of large mount of degradation parts of concrete elements, the appearance features of acid rain attacking were generalized.These appearance features affected by the attacking mode of natural acid rain and take on erosion, forming crystallized product and stalactite on surface.Some effective measures to prevent acid rain erosion were also reported in the investigation.
出处
《混凝土》
CAS
CSCD
北大核心
2007年第11期23-27,共5页
Concrete
关键词
混凝土
酸雨
侵蚀
耐久性
concrete
acid rain
degradation
durability
