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本文通过进行干法、湿法工艺下橡胶沥青混合料的无侧限抗压强度试验和劈裂强度试验,并将其与SBS改性沥青混合料对比,分析了干法、湿法工艺橡胶沥青混合料的强度特性。试验结果表明:抗压强度方面,无论掺加何种目数的胶粉,干法与湿法工艺橡胶沥青混合料的强度都有不同程度的降低,且随着胶粉掺量的增加,强度降低的幅度增大;劈裂强度方面,湿法工艺橡胶沥青混合料的劈裂强度与SBS改性沥青混合料相当,并且明显好于干法工艺。
In this paper, unconfined compressive strength test and splitting strength test of rubber asphalt mixture under dry and wet process were carried out, and compared with SBS modified asphalt mixture, the dry and wet process rubber asphalt Strength characteristics of the mixture. The test results show that the compressive strength of rubber asphalt mixture with both dry and wet processes decreases with different degrees, no matter what kind of powder is added. With the increase of the content of powdered rubber, the strength In the aspect of splitting strength, the splitting strength of wet asphalt rubber composites is similar to that of SBS modified asphalt mixture, and it is obviously better than that of dry process.