沥青混合料中掺加定量抗车辙剂后的路用性能研究

为了更好的解决沥青路面特有的车辙损坏这一难题,通过对特定抗车辙剂在沥青混合料中掺加后的路用性能进行了室内试验研究。结果表明：在油石比确定的情况下,改性沥青混合料的高温稳定性在一定范围内与抗车辙剂掺量成正相关,而对于水稳定性和低温抗裂性能则无可确定的单一相关趋势,但在油石比为4.9%情况下,对AC-13C型沥青混合料掺入0.4%的抗车辙剂可有效提高改性沥青混合料的高温稳定性、水稳定性以及低温抗裂性能。可见该研究为沥青路面车辙损坏的预防又提供一种新的配比方案,但应充分考虑实际工程情况和经济原则后确定抗车辙剂的最优掺量。

Study on Road Performance of Asphalt Mixture with Quantitative Anti-Rutting Agent

In order to solve the difficult problem of rutting damage on asphalt pavement, an indoor experiment was conducted to study the influence of rutting agent on the performance of asphalt mixture. The results show that the high-temperature stability of the modified asphalt mixture is positively correlated with the anti-rutting agent content within a certain range, and there is no determinable single correlation for the water stability and low-temperature anti-crack performance. In the case of a 4.9% oil/rock ratio, adding 0.4% anti-rutting agent to AC-13C asphalt mixture can effectively improve the high temperature stability, water stability and low temperature crack resistance of the modified asphalt mixture. It is concluded that this study can provide a new matching scheme for the prevention of rutting damage on asphalt pavements. However, the optimal dosage of anti-rutting agents should be determined after fully considering actual engineering conditions and economic principles.