水泥-钢渣混合基层在冻融循环作用下性能分析

在工业发展突飞猛进的背景下，钢铁作为各行各业中都需要用到的材料，在加工过程中也会产生许多难以有效利用的废渣。将钢渣与水泥按照一定的级配混合后作为公路路基填料，能够解决部分钢渣处理问题。主要分析了在冻融循环作用下水泥-钢渣混合料的承载力问题，通过室内试验得到以下结论，一是在满足公路等级要求的级配下，随着冻融循环的次数增加，试件的裂隙增多，呈现骨料外露，承载力显著下降；二是试件在冻融作用下质量随着循环次数先增大后减小，强度则随着循环次数增加不断减小，三是通过试验与数据处理得到试件抗压强度与循环次数的关系式，可以为后续实地试验以及现场施工提供预测指导。

Analysis on Performance of Cement and Steel Slag Mixed Base under Freezing and Thawing Cycle

In the good economic development situation in China, the industrial development has advanced by leaps and bounds, in which the steel is used as a material in all walks of life. But the steel will also produce many waste slags difficult to effectively use in the processing. The steel slag mixed with the cement according to certain gradation can be used as the roadbed filler, which can solve some problems of steel slag treatment. The bearing capacity of cement and steel slag mixture under the action of freezing-thawing cycle is mainly analyzed. The following conclusions are obtained through the laboratory test that under the graduation meeting the requirements of highway grade, with the increase of the number of freezing-thawing cycles, the cracks of the specimen increase, showing the aggregate exposure, and the bearing capacity decreases significantly. The mass of the specimen increases first and then decreases with the number of cycles under the freezing-thawing cycles, and the strength decreases continuously with the increase of cycles. The correlation formula between the compressive strength of specimens and the number of cycles can be obtained through test and data processing, which can provide the prediction guidance for subsequent field tests and field construction.