Abstract: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.
