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Role of mineral filler in asphalt mixture
Road Materials and Pavement Design ( IF 3.7 ) Pub Date : 2020-10-07 , DOI: 10.1080/14680629.2020.1826351
Yu Chen 1 , Shibing Xu 1 , Gabriele Tebaldi 2 , Elena Romeo 2
Affiliation  

Mineral filler, fine-grained mineral particles naturally present in or manufactured and added to aggregates play a significant role on the performance of asphalt mastic and asphalt mixtures. A clear understanding of effects of filler on the properties of asphalt paving mixtures is critical to ensure a good asphalt mixture design and its field performance. In this study, the basic properties of mineral filler, mainly including physical and chemical properties, were first reviewed and followed by the effects on mastic and mixture performances. This review finds that particle size distribution and specific surface area are the two most important physical characteristics for fillers in terms of its impact on mastic performances. Fillers, including diatomite, hydrated lime and cement, can improve the high temperature and durability performances of mastic and mixture. However, fillers, like glass powder, steel slag and bentonite, have a detrimental effect on the low-temperature performances. It can be concluded that it is important to carefully select the mineral filler type and proportion in order to improve the asphalt mixture performances.



中文翻译:

矿物填料在沥青混合料中的作用

矿物填料,天然存在或制造并添加到集料中的细粒矿物颗粒对沥青胶泥和沥青混合物的性能起着重要作用。清楚地了解填料对沥青铺路混合物性能的影响对于确保良好的沥青混合物设计及其现场性能至关重要。在这项研究中,首先回顾了矿物填料的基本性能,主要包括物理和化学性能,然后是对胶粘剂和混合物性能的影响。本综述发现,就填料对胶粘剂性能的影响而言,粒径分布和比表面积是填料的两个最重要的物理特性。填料,包括硅藻土、熟石灰和水泥,可提高胶粘剂和混合料的高温和耐久性能。然而,填料,如玻璃粉、钢渣和膨润土,对低温性能有不利影响。可以得出结论,仔细选择矿物填料的类型和比例对于提高沥青混合料的性能非常重要。

更新日期:2020-10-07
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