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中文摘要：
研究了盐湖卤水种类对混凝土在盐湖条件下的荷载、卤水腐蚀和冻融的单一与多重因素作用下的耐久性，探讨了混凝土在盐湖地区的破坏机理。结果表明，内蒙古盐湖卤水加速了混凝土的冻融破坏，西藏和新疆盐湖卤水则在一定程度上延缓了冻融破坏，而青海盐湖卤水则具有独特的延缓破坏现象。施加30％弯曲荷载将使混凝土寿命降低40％。Na2SO4·10H2O等盐类的结晶压作用是混凝土在盐湖地区腐蚀-冻融的破坏机理，当混凝土同时受到盐结晶压和荷载作用时突然断裂是其破坏特征。
英文摘要：
Influence of bittern types on durability of concretes subjected to multiple durability factor of load, bittern attack and freezing-thawing or single factor was investigated. Fracture mechanisms of concrete in salt lakes were also discussed. Results show that Inner Mongolia bittern accelerated the freezing-thawing fracture process of concrete, while Xinjiang and Tibet bittern could slower the process and a extraordinary improvement of durability was observed for concrete in Qinghai bittern. A 30% bending load would decrease service life of concrete by 40%. Fracture mechanism of concrete subjected to bittern attack and freezing-thawing simultaneously could be summarized as stresses induced by crystallization ofNa2SO4· 10H2O. Fractures would occur abruptly for concretes subjected to loads and salt crystallization at the same time.
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