Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Durable high-modulus asphalt mixture and preparation method thereof
The invention discloses a durable high-modulus asphalt mixture and a preparation method thereof, and belongs to the technical field of asphalt mixtures. The method comprises the following steps: carrying out a screening test on a new material, respectively carrying out an extraction screening test on coarse and fine milled materials to obtain the asphalt content and the screening passing rate, determining the RAP mixing amount, preferably selecting a gradation according to a French asphalt mixture design concept, selecting an asphalt-aggregate ratio in combination with previous practical engineering application experience to carry out a rotary compaction test, and determining the compaction characteristic of the mixture. Whether rotation compaction test results such as void ratio and the like meet standard requirements or not is obtained, so that the optimal gradation and the designed total asphalt-aggregate ratio are determined, the asphalt-aggregate ratio of the milling materials in the designed asphalt mixture is obtained through synthetic calculation according to the asphalt-aggregate ratios of the extraction results of the coarse milling materials and the fine milling materials, and then the addition amount of new asphalt can be obtained according to the total designed asphalt-aggregate ratio; the asphalt mixture is prepared according to the specification requirements, and then the pavement performance of the mixture is verified to obtain the durable high-modulus recycled asphalt mixture meeting the pavement requirements.
本发明公开了一种耐久性高模量沥青混合料及其制备方法，属于沥青混合料技术领域。对新料进行筛分试验，对粗、细铣刨料分别进行抽提筛分试验，得出沥青含量和筛分通过率，确定RAP掺量，依据法国沥青混合料设计理念，优选一个级配，结合以往实际工程应用经验选择油石比进行旋转压实试验，确定混合料的压实特性，得出空隙率等旋转压实试验结果是否满足规范要求，从而确定最佳级配和设计总油石比，根据粗、细铣刨料抽提结果的油石比，通过合成计算得出设计沥青混合料中铣刨料的油石比，然后根据总设计油石比可以得出新沥青的添加量；按照规范要求制备沥青混合料，然后进行混合料路用性能验证，得到符合路用要求的耐久性高模量再生沥青混合料。
Durable high-modulus asphalt mixture and preparation method thereof
The invention discloses a durable high-modulus asphalt mixture and a preparation method thereof, and belongs to the technical field of asphalt mixtures. The method comprises the following steps: carrying out a screening test on a new material, respectively carrying out an extraction screening test on coarse and fine milled materials to obtain the asphalt content and the screening passing rate, determining the RAP mixing amount, preferably selecting a gradation according to a French asphalt mixture design concept, selecting an asphalt-aggregate ratio in combination with previous practical engineering application experience to carry out a rotary compaction test, and determining the compaction characteristic of the mixture. Whether rotation compaction test results such as void ratio and the like meet standard requirements or not is obtained, so that the optimal gradation and the designed total asphalt-aggregate ratio are determined, the asphalt-aggregate ratio of the milling materials in the designed asphalt mixture is obtained through synthetic calculation according to the asphalt-aggregate ratios of the extraction results of the coarse milling materials and the fine milling materials, and then the addition amount of new asphalt can be obtained according to the total designed asphalt-aggregate ratio; the asphalt mixture is prepared according to the specification requirements, and then the pavement performance of the mixture is verified to obtain the durable high-modulus recycled asphalt mixture meeting the pavement requirements.
本发明公开了一种耐久性高模量沥青混合料及其制备方法，属于沥青混合料技术领域。对新料进行筛分试验，对粗、细铣刨料分别进行抽提筛分试验，得出沥青含量和筛分通过率，确定RAP掺量，依据法国沥青混合料设计理念，优选一个级配，结合以往实际工程应用经验选择油石比进行旋转压实试验，确定混合料的压实特性，得出空隙率等旋转压实试验结果是否满足规范要求，从而确定最佳级配和设计总油石比，根据粗、细铣刨料抽提结果的油石比，通过合成计算得出设计沥青混合料中铣刨料的油石比，然后根据总设计油石比可以得出新沥青的添加量；按照规范要求制备沥青混合料，然后进行混合料路用性能验证，得到符合路用要求的耐久性高模量再生沥青混合料。
Durable high-modulus asphalt mixture and preparation method thereof
一种耐久性高模量沥青混合料及其制备方法
WANG WENFENG (Autor:in)
26.05.2023
Patent
Elektronische Ressource
Chinesisch
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