Analytical approach for the mix design optimisation of bituminous mixtures with crumb rubber

被引：0

作者：

Sara Bressi

Natalia Colinas-Armijo

Gaetano Di Mino

机构：

[1] University of Palermo,Department of Civil, Environmental, Aerospace, Materials Engineering (DICAM)

来源：

Materials and Structures | 2018年 / 51卷

关键词：

Crumb rubber; Superpave gyratory compactor; Mix design; Rubberised asphalt;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The present paper provides a basis for defining a mix design method specifically tailored to rubberised asphalt that takes into account the behaviour of crumb rubber. An analytical approach to quantifying the recovered deformation of crumb rubber in the post-compaction phase has been developed in order to adjust the number of gyrations proposed by the Superpave method for compacting specimens of hot mix asphalt using a Superpave gyratory compactor. The maximum allowable amount of rubber has been calculated. Finally, a step-by-step protocol has been proposed in order to fabricate and compact crumb rubber modified mixtures with the gyratory compactor.

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