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Deterioration of concrete in railway tunnel suffering from sulfate attack 被引量:10
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作者 龙广成 谢友均 +1 位作者 邓德华 李小坤 《Journal of Central South University》 SCIE EI CAS 2011年第3期881-888,共8页
For the sake of understanding the deterioration behavior of concrete in actual railway tunnel structures subjected to aggressive sulfate medium in practice,detailed field investigations and tested analysis on sprayed ... For the sake of understanding the deterioration behavior of concrete in actual railway tunnel structures subjected to aggressive sulfate medium in practice,detailed field investigations and tested analysis on sprayed concrete linings of approximately 40-year-old railway tunnels in environments containing sulfate ion were carried out,respectively.The results show that the deterioration of concretes in the investigated area is serious,which involves complicated physicochemical process between the sulfate salt and concrete.Among them,the secondary sulfateminerals such as gypsum formation under very high concentration sulfate ion condition by accumulating and evaporation process dominate,followed by the crystallization of sulfate salt and formation of thaumasite. 展开更多
关键词 sulfate attack CONCRETE railway tunnel secondary sulfate minerals salt crystallization
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