微表处混合料乳化沥青用量设计指标的探讨

Discussion on Design Indexes of Optimal Asphalt Content for Micro-Surfacing Mixture

通过室内试验研究以及工程数据的汇总,对微表处混合料乳化沥青用量的设计指标进行了检验。建议粘附砂量调整为不大于450 g／m2,浸水1 h湿轮磨耗(WTAT)指标取整为不大于540 g／m2使用;混合料的浸水6天WTAT取整为不大于800 g／m2使用。

Some requirements for Micro-Surfacing mixture were inspected by laboratory tests and construction practices. The maximum of 538 g/m2 for sand adhesion value was not proper for establishing the maximum limits of asphalt content, which was suggested to be adjusted to 450 g/m2. The maximum limits of 538 g/m2 for 1 hour soak WTAT and 807 g/m2 for 6 days soak WTAT were testified to be suitable for us. In order to be calculated, it was suggested to use 540 g/m2 for 1 hour soak WTAT and 800 g/m2 for 6 days soak WTAT as the maximum limits.