To solve the problem of subgrade diseases in saline soft soil area in Xinjiang, the spalling damage of foamed cement banking specimens under the combined effect of freeze-thaw and salt corrosion was studied, and the exfoliation thickness variation rules of foamed cement banking specimens with different mix ratios were compared. The corrosion resistance of foamed cement banking was enhanced by wrapping color strip cloth, and the effect of enhancing corrosion resistance was evaluated. In addition, the damage caused by freeze-thaw circulation to foamed cement banking was discussed through measuring the exfoliation damage of foamed cement banking specimens under salt erosion as a contrast. The results show that the method of adding slag content in the foamed cement banking or wrapping color strip can significantly enhance the salt corrosion resistance and the ability to resist the combined effect of freeze-thaw and salt corrosion. Under the combined effect of salt corrosion and freeze-thaw, the damage degree of the foamed cement banking specimen is significantly higher than that of the specimen only in the salt solution erosion environment. These results prove that using the foamed cement banking with high corrosion and freezing resistance as subgrade filling can reduce the load and enhance the durability of subgrade, which is an effect way to solve the problem of subgrade diseases in saline soft soil area in Xinjiang.
于 浩,沈 君,惠 嘉,程 寅
. Experimental Study on Damage of Foamed Cement Banking under Combined Effect of Salt Corrosion and Freeze-Thaw Circulation[J]. Transport Research, 2020
, 6(5)
: 14
-20
.
DOI: 10.16503/j.cnki.2095-9931.2020.05.002
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