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对沥青混合料生产和铺筑过程中集料破碎降解现象与生产摊铺不同阶段的混合料的体积特性进行了研究,结果发现:①在矿料的转运、提升与拌合过程中会产生显著破碎降解;②集料的最大公称粒径(NMAS)与混合料厂拌生产过程中的集料的破碎降解率无关;③虽然集料破碎降解是集料类型的函数,但粗集料洛杉矶磨耗损失与细集料磨耗试验均不能用来预测所研究类型集料的降解情况;④实验室取样与运料车取样成型试件的空隙率与矿料间隙率存在显著差异,研究没有找到通过采用混合料体积参数来预测厂拌过程中集料破碎降解情况的方式。
The crushing and degradation of aggregates in the process of production and paving of asphalt mixture and the volume characteristics of the mixture in different stages of production are studied. The results show that: (1) There is significant difference in the process of transportation, upgrading and mixing Crushing and degradation; ② The maximum nominal particle size (NMAS) of aggregates has nothing to do with the crushing and degrading rate of aggregates during the mixing process; ③ Although crushing and degradation of aggregate is a function of aggregate type, Loss and fine aggregate abrasion test can not be used to predict the degradation of the type of aggregates; ④The difference between the voidage and the voidage of the samples in the laboratory sampling and the haul truck sampling and forming samples is not significant, Mixture volume parameters to predict the process of aggregate crushing degradation of the way.