Analytical Formulas for Film Thickness in Compacted Asphalt Mixture
Analytical Formulas for Film Thickness in Compacted Asphalt Mixture
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DOI：
10.3141/1829-04
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发表时间：
2003
影响因子：
1.7
通讯作者：
B. Radovskiy
中科院分区：
文献类型：
--
作者：
B. Radovskiy
近年来，一些研究者提出以沥青膜厚度作为保证沥青混合料耐久性的标准。然而，他们认为，标准的膜厚方程，可以追溯到20世纪40年代，需要通过现代技术进行检查和改进。一个假定的背景下，沥青协会的表面积因素的基础上恢复和详细分析。一个基本上健全的模型膜厚度计算使用的沥青混凝土模型，其中集料是球形的，但具有任意的尺寸分布。最近的结果从统计几何应用于确定膜厚度为任何体积分数的骨料和任何体积分数的有效沥青。给出了解析公式，总结了计算细节，并提供了实例。
Recently, several researchers have proposed asphalt film thickness as a criterion for ensuring the durability of asphalt mixtures. However, they suggested that the standard film thickness equation, which dates back to the 1940s, needs to be examined by modern technology and improved. A presumable background on which the Asphalt Institute surface area factors are based was recovered and analyzed in detail. A fundamentally sound model for film thickness calculation was developed using a model of asphalt concrete in which the aggregates are spherical but have an arbitrary size distribution. A recent result from statistical geometry is applied to determine the film thickness for any volume fraction of aggregates and any volume fraction of effective asphalt. The analytical formulas are presented, the details of the calculation are summarized, and examples are provided.