Influence of Aggregate Gradation on Pavement Performance of Open-gradedLarge Stone Asphalt Mixes

机译：骨料级配对开放级配路面性能的影响大石沥青混合料

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In order to analyze the influence of aggregate gradation on pavement performance of Open-graded Large Stone Asphalt Mixes (OLSM), this paper designs aggregate gradation of OLSM by numerical calculation method of varying I, and analyzes the relations between aggregate gradation and OLSM performances such as porosity, strength, water stability, high temperature stability and low-temperature crack resistance based on the results of an immersion large-scale marshall test, freeze-thaw split test, rutting test, and bending test at low temperature. The results show that with the value of I decreasing and content of coarse aggregate increasing, the porosity of OLSM increases, the strength, water stability and stability decreases, and low-temperature crack resistance increases first and then decreases. Based on the technical requirements, the reasonable aggregate gradation of OLSM is recommended.

机译：为了分析骨料级配对开放级大石料沥青混合料（OLSM）路面性能的影响，本文采用变分I的数值计算方法设计了OLSM的骨料级配，并分析了骨料级配与OLSM性能之间的关系。孔隙率，强度，水稳定性，高温稳定性和低温抗裂性是根据沉浸式大型马歇尔试验，冻融劈裂试验，车辙试验和低温弯曲试验的结果得出的。结果表明，随着I值的降低和粗骨料含量的增加，OLSM的孔隙率增加，强度，水稳定性和稳定性降低，其抗低温裂性先升高后降低。根据技术要求，建议使用合理的OLSM总体等级。

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《ICCTP 2010;International conference of Chinese transportation professionals》|2011年|p.3133-3140|共8页
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Qi-lin FU; Shuan-fa CHEN;
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中图分类运输业计划和管理体制;
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4. Analysis of Influence Factors of Temperature Stress for Open-graded Large Stone Asphalt Mixes of Asphalt Pavement [C] . GUO Hongbing, CHEN Shuanfa International Conference on Mechanical Engineering . 2011

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5. Discrete element modeling of influences of aggregate gradation and aggregate properties on fracture in asphalt mixes. [D] . Mahmoud, Enad Muhib Ahmad. 2009

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6. Evaluation of Stone Mastic Asphalt Containing Ceramic Waste Aggregate for Cooling Asphalt Pavement [O] . Qibo Huang, Zhendong Qian, Jing Hu, 2020

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7. Stone Matrix Asphalt (SMA) is a gap-graded mix that is gaining popularity worldwide. Generally, gap graded mixes are thought to be weak in fatigue resistance. In this study, cellulose fibers were pre-blended in PG64-22 binder with fiber proportions of 0.2%, 0.4%, 0.6%, 0.8% and 1.0% by weight of aggregates. The fiber-modified binder showed improved rheological properties and showed that the PG64-22 binder can be modified and raised to PG70-22 grade. The cellulose oil palm fiber (COPF) was found to improve the diameteral fatigue performance of SMA design mix. The fatigue life increased to a maximum at a fiber content of about 0.6%, whilst the tensile stress and stiffness also showed a similar trend in performance. The initial strains of the mix were lowest at a fiber content of 0.6%. [O] . Ratnasamy Muniandy, Bujang B.K. Huat 2006

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8. Influence of Aggregate Gradation and Particle Shape/Texture on Permanent Deformation of Hot Mix Asphalt Pavements. [R] . Ahlrich, R. C. 1996

机译：集料级配和颗粒形状/质地对热拌沥青混凝土路面永久变形的影响。

Influence of Aggregate Gradation on Pavement Performance of Open-gradedLarge Stone Asphalt Mixes

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