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首页> 外文会议>International Conference on Civil Engineering and Transportation >Experimental Study on the Concrete Performance Corroded by Different Salts under the Condition of Freezing-thawing Cycles
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Experimental Study on the Concrete Performance Corroded by Different Salts under the Condition of Freezing-thawing Cycles

机译：冻融循环条件下不同盐腐蚀混凝土性能的实验研究

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摘要

The destructive effect of salt corrosion on concrete has attracted wide attention of civil engineering scholar nowadays. The west area in Jilin province is not only the typical frost soil region, but also is the most serious area with saline soil. In such environment damage of structural engineering often occurs under the action of freeze-thaw cycles and salt corrosion due to the lack of concrete durability. In this article Da'an city in Jilin is selected to be as the research area, and the physical and chemical properties of soil samples in spring are analyzed, the results indicate that the component of soluble salt in soil mainly includes Na~+, (HCO_3)~-, Cl~-, and (SO_4)~2, and small amount of Mg~(2+), Ca~(2+), K~+, and so on. In order to study the influence of different soluble salts on concrete durability under the condition of freeze-thaw cycles, quick freeze-thaw cycling tests on concrete durability are conducted respectively in sulfate, chloride and bicarbonate solution. Then the characteristics and laws of concrete corrosion damage under freeze-thaw cycles and salt corrosion damage are summarized.
机译：盐腐蚀对混凝土的破坏性效果引起了土木工程学者的广泛关注。吉林省西区不仅是典型的冰霜土壤，而且是盐水土壤中最严重的地区。在这种环境中，结构工程的损伤通常在冻融循环和盐腐蚀的作用下发生，因为缺乏混凝土耐久性。在本文中，吉林的大安市被选为研究区，分析了春季土壤样品的物理和化学性质，结果表明，土壤中可溶性盐的组分主要包括Na〜+，（ HCO_3）〜 - ，Cl〜 - ，（SO_4）〜2，少量Mg〜（2+），CA〜（2+），K〜+等。为了在冻融循环条件下研究不同可溶性盐对混凝土耐久性的影响，在硫酸盐，氯化物和碳酸氢盐溶液中进行快速冻融循环试验。然后，总结了冻融循环和盐腐蚀损伤下混凝土腐蚀损伤的特点和规律。

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