SBR-SBS复合改性乳化沥青冷再生混合料路用性能研究

Study on Pavement Performance of SBR-SBS Composite Modified Emulsified Asphalt Cold Recycled Mixture

通过试验探究SBR-SBS复合改性乳化沥青冷再生混合料的水稳定性、高温稳定性、低温抗裂性等路用性能。试验结果表明,SBS、SBR复合改性剂的掺人能有效提高冷再生混合料各项路用性能。当SBS掺量为3%、SBR掺量为3.5%时,混合料28 d的残留稳定度达85.3%,劈裂强度比也均达到93.6%,动稳定度超过10000次/mm,弯拉应变达到3500με.

This paper explores the pavement performances of water stability,high temperature stability and low temperature crack resistance of SBS-SBR composite modified emulsified asphalt cold recycled mixture through experiments.The results show that the addition of SBS and SBR composite modifiers can effectively improve various road performances of cold recycled mixture.When the SBS content is 3%and the SBR content is 3.5%,the residual stability of the mixture reaches 85.3%in 28 d,the splitting strength ratio reaches 93.6%,the dynamic stability exceeds 10000 times/mm,and the bending strain reaches 3500με.