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Grading optimization method of rubber asphalt mixture and application of grading optimization method
The invention discloses a grading optimization method of a rubber asphalt mixture and application of the grading optimization method, belonging to the technical field of grading. The method comprises the following steps: screening each grade of materials in raw materials of the rubber asphalt mixture through a plurality of standard hole sieves with different hole diameters, and acquiring a corresponding grading curve based on the passing rate of each grade of materials corresponding to the standard hole sieves with different hole diameters; adjusting the mass percent of each grade of materials in the raw materials for the rubber asphalt mixture, and repeating the above screening process to obtain at least two other grading curves between a grading upper limit and a grading lower limit of the raw materials for the rubber asphalt mixture; and taking the grading curve with both a small PS void ratio nPS and alarge PS contact number cnps in the obtained grading curves as an optimal grading curve, and acquiring an optimal grading scheme correspondingly. According to the method, the rubber asphalt mixture with relatively good rutting resistance can be obtained. The grading method is especially suitable for the design of middle and upper surface layer rubber asphalt mixtures.
本发明公开了一种橡胶沥青混合料的级配优化方法及其应用，属于级配技术领域。该方法包括以下步骤：将橡胶沥青混合料原料中的每档物料均通过多个不同孔径的标准孔筛进行筛分，基于每档物料对应不同孔径的标准孔筛的通过率得到相应的级配曲线。调整各档物料在橡胶沥青混合料原料中的质量百分数并重复上述筛分过程以得到在橡胶沥青混合料原料的级配上限和级配下限之间的另外至少两条级配曲线。以所得的多条级配曲线中同时具有较小PS空隙率nPS及较大PS接触数cnps的级配曲线作为最优级配曲线并对应获得最优级配方案。该方法能够获得抗车辙性能较好的橡胶沥青混合料。该级配方法尤其适用于中上面层橡胶沥青混合料的设计。
Grading optimization method of rubber asphalt mixture and application of grading optimization method
The invention discloses a grading optimization method of a rubber asphalt mixture and application of the grading optimization method, belonging to the technical field of grading. The method comprises the following steps: screening each grade of materials in raw materials of the rubber asphalt mixture through a plurality of standard hole sieves with different hole diameters, and acquiring a corresponding grading curve based on the passing rate of each grade of materials corresponding to the standard hole sieves with different hole diameters; adjusting the mass percent of each grade of materials in the raw materials for the rubber asphalt mixture, and repeating the above screening process to obtain at least two other grading curves between a grading upper limit and a grading lower limit of the raw materials for the rubber asphalt mixture; and taking the grading curve with both a small PS void ratio nPS and alarge PS contact number cnps in the obtained grading curves as an optimal grading curve, and acquiring an optimal grading scheme correspondingly. According to the method, the rubber asphalt mixture with relatively good rutting resistance can be obtained. The grading method is especially suitable for the design of middle and upper surface layer rubber asphalt mixtures.
本发明公开了一种橡胶沥青混合料的级配优化方法及其应用，属于级配技术领域。该方法包括以下步骤：将橡胶沥青混合料原料中的每档物料均通过多个不同孔径的标准孔筛进行筛分，基于每档物料对应不同孔径的标准孔筛的通过率得到相应的级配曲线。调整各档物料在橡胶沥青混合料原料中的质量百分数并重复上述筛分过程以得到在橡胶沥青混合料原料的级配上限和级配下限之间的另外至少两条级配曲线。以所得的多条级配曲线中同时具有较小PS空隙率nPS及较大PS接触数cnps的级配曲线作为最优级配曲线并对应获得最优级配方案。该方法能够获得抗车辙性能较好的橡胶沥青混合料。该级配方法尤其适用于中上面层橡胶沥青混合料的设计。
Grading optimization method of rubber asphalt mixture and application of grading optimization method
一种橡胶沥青混合料的级配优化方法及其应用
ZHANG SULONG (author) / LI HUA (author) / WANG JIE (author) / CHEN GUANGHUI (author)
2021-05-11
Patent
Electronic Resource
Chinese
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