Effect Evaluation of Aggregate Composition on Road Performance of Polyether Polyurethane Mixture

doi:10.16552/j.cnki.issn1001-1625.2025.0539

Abstract

Abstract: To investigate the effect of aggregate composition on the performance of polyether polyurethane mixture (PPUM), this study employed the PC-13 gradation and designed three aggregate composition schemes of PPUM (full limestone (PC-1), limestone+basalt (PC-2) and full basalt (PC-3)). The effects of aggregate composition and three environmental factors of thermal-oxidative aging, ultraviolet radiation and water on the road performance of PPUM were evaluated, respectively. The performance evolution law of PPUM was revealed and the prediction model of performance impacts was established. The results show that the road performance of PC-1 is the worst among the three aggregate compositions, and the road performance of PC-3 is the best. The road performance of PC-2 is lower than that of PC-3, but the decrease is not more than 10%. The performance decay law of PPUM with three aggregate compositions is similar, which shows that ultraviolet radiation and thermal-oxidative aging have no effect on the high temperature performance of PPUM, but have a significant effect on indirect tensile strength, low temperature performance and water stability performance. Repeated freeze-thaw cycles have a significant effect on the water stability performance of PPUM.The established prediction model of environmental factors on performance has high fitting accuracy.

Key words: polyether polyurethane mixture, limestone, basalt, aggregate composition, road performance, impact evaluation

CLC Number:

U414

XIE Zhitian, WANG Mingyu, SUN Chuanxia, SHI Liang, HUO Chunhui. Effect Evaluation of Aggregate Composition on Road Performance of Polyether Polyurethane Mixture[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2025, 44(12): 4646-4658.

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