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为改善高模量沥青混合料的性能缺陷,提出采用橡胶粉与高模量剂复配方案来改善其路用性能.通过DSR试验、BBR试验、MMLS3加速加载试验、低温弯曲试验、小梁弯曲疲劳试验分析4%~12%橡胶粉掺量对高模量沥青及其混合料技术性能的影响.试验结果表明:橡胶粉掺加超过8%后,高模量沥青的高温分级由82℃增加到88℃,低温分级由-12℃降低到-18℃;橡胶粉的加入可改善高模量沥青混合料的高温耐久性和低温抗裂性,且掺8%~10%橡胶粉后,高模量沥青混合料疲劳性能显著提高.
In order to improve the performance defects of high modulus asphalt mixture, we proposed to improve the road performance by using rubber powder and high modulus agent compounding scheme.Through DSR test, BBR test, MMLS3 accelerated loading test, low temperature bending test, Fatigue test The influence of 4% ~ 12% rubber powder on the technical properties of high modulus asphalt and its mixture was analyzed.The results showed that the high temperature classification of high modulus asphalt increased from 82 ℃ after the addition of rubber powder over 8% To 88 ℃, low temperature classification from -12 ℃ to -18 ℃; rubber powder can improve the high modulus asphalt mixture high temperature durability and low temperature crack resistance, and mixed with 8% to 10% rubber powder, high Modulus asphalt mixture fatigue performance significantly increased.