Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Asphalt graded broken stone for high-speed railway foundation bed and production method thereof
The invention provides a production method of asphalt graded broken stone for a high-speed railway foundation bed, which comprises the following steps: (1) preheating SBS modified asphalt and/or SBR modified asphalt in a storage tank to 160-180 DEG C in a graded manner for more than or equal to 3 hours; (2) heating an aggregate to 170-200 DEG C, and drying the aggregate until the residual water content of the aggregate is not more than 1%; (3) performing dry mixing on the aggregate for not shorter than 10 s, wherein the dry mixing temperature is 170-195 DEG C; and (4) adding limestone powder,an asphalt enhancer and preheated SBS modified asphalt and/or SBR modified asphalt into the aggregate subjected to dry mixing in the step (3), and mixing the components to produce the asphalt gradedbroken stone for the high-speed railway foundation bed. The invention also provides the asphalt graded broken stone for the high-speed railway foundation bed, which is produced by the method providedby the invention. The asphalt graded broken stone is excellent in performance, and can meet the stress and deformation requirements of a high-speed railway foundation bed structure.
本发明提供一种用于高速铁路基床的沥青级配碎石的生产方法，其包括如下步骤：(1)将储存罐中的SBS改性沥青和/或SBR改性沥青分级预热，并预热至160～180℃，预热时间大于等于3h；(2)将骨料加热至170～200℃的温度，并烘干骨料，使得骨料的残余含水量不大于1％；(3)将所述骨料进行干拌，干拌时间不少于10s，干拌温度为170～195℃；(4)向步骤(3)中干拌后的骨料中加入石灰石粉、沥青增强剂以及预热好的SBS改性沥青和/或SBR改性沥青，进行拌和，生产得到用于高速铁路基床的沥青级配碎石。本发明还提供一种本发明的方法生产制得的用于高速铁路基床的沥青级配碎石。本发明提供的方法生产得到的沥青级配碎石性能优异，能够满足高速铁路基床结构受力和变形要求。
Asphalt graded broken stone for high-speed railway foundation bed and production method thereof
The invention provides a production method of asphalt graded broken stone for a high-speed railway foundation bed, which comprises the following steps: (1) preheating SBS modified asphalt and/or SBR modified asphalt in a storage tank to 160-180 DEG C in a graded manner for more than or equal to 3 hours; (2) heating an aggregate to 170-200 DEG C, and drying the aggregate until the residual water content of the aggregate is not more than 1%; (3) performing dry mixing on the aggregate for not shorter than 10 s, wherein the dry mixing temperature is 170-195 DEG C; and (4) adding limestone powder,an asphalt enhancer and preheated SBS modified asphalt and/or SBR modified asphalt into the aggregate subjected to dry mixing in the step (3), and mixing the components to produce the asphalt gradedbroken stone for the high-speed railway foundation bed. The invention also provides the asphalt graded broken stone for the high-speed railway foundation bed, which is produced by the method providedby the invention. The asphalt graded broken stone is excellent in performance, and can meet the stress and deformation requirements of a high-speed railway foundation bed structure.
本发明提供一种用于高速铁路基床的沥青级配碎石的生产方法，其包括如下步骤：(1)将储存罐中的SBS改性沥青和/或SBR改性沥青分级预热，并预热至160～180℃，预热时间大于等于3h；(2)将骨料加热至170～200℃的温度，并烘干骨料，使得骨料的残余含水量不大于1％；(3)将所述骨料进行干拌，干拌时间不少于10s，干拌温度为170～195℃；(4)向步骤(3)中干拌后的骨料中加入石灰石粉、沥青增强剂以及预热好的SBS改性沥青和/或SBR改性沥青，进行拌和，生产得到用于高速铁路基床的沥青级配碎石。本发明还提供一种本发明的方法生产制得的用于高速铁路基床的沥青级配碎石。本发明提供的方法生产得到的沥青级配碎石性能优异，能够满足高速铁路基床结构受力和变形要求。
Asphalt graded broken stone for high-speed railway foundation bed and production method thereof
用于高速铁路基床的沥青级配碎石及其生产方法
SHI YUEFENG (Autor:in) / LOU LIANGWEI (Autor:in) / YAO JIANPING (Autor:in) / YE YANGSHENG (Autor:in) / CAI DEGOU (Autor:in) / LIU JUNFEI (Autor:in) / WEI SHAOWEI (Autor:in) / LYU SONG (Autor:in) / GENG LIN (Autor:in) / CAO YUANDONG (Autor:in)
09.10.2020
Patent
Elektronische Ressource
Chinesisch
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