In order to study the influence of crumb rubber processing parameters on the performance of activated crumb rubber/SBR composite modified asphalt,and obtained the best processing parameters of crumb rubber,waste cooking oil was used to activate crumb rubber.Different mass mixture ratios of crumb rubber to waste cooking oil,heating temperature,and heating time were used to prepare activated crumb rubber,then compounded SBR to prepare composite modified asphalt.Through conventional asphalt performance test and RTFOT,the high temperature performance,low temperature performance,viscosity,storage stability and anti-aging performance of composite modified asphalt were analyzed and studied.The results shown that the crumb rubber processing parameters had a significant impact on the comprehensive performance of the asphalt.The best processing parameters for the crumb rubber were suggested as follows:blending ratio 1∶1,heating temperature 160℃,and heating time 90min.The composite modified asphalt Compared with 90# matrix asphalt,its conventional performance was significantly improved,and better than SBR and activated crumb rubber modified asphalt.
He Dongpo, Pan Zhiqiang, Wang Hongguang
. Influence of crumb rubber processing parameter on the performance of activated crumb rubber/SBR composite modified asphalt[J]. New Chemical Materials, 2021
, 49(2)
: 259
-262
.
DOI: 10.19817/j.cnki.issn 1006-3536.2021.02.059
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