Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Temperature-resistant asphalt mixture and preparation method thereof
The invention provides a temperature-resistant asphalt mixture and a preparation method thereof, and relates to the technical field of asphalt. The asphalt mixture provided by the invention is prepared from the following components in parts by weight: 50 to 60 parts of aggregate, 20 to 30 parts of aggregate, 10 to 15 parts of matrix asphalt, 5 to 10 parts of modified filler mixture and 1 to 5 parts of functional additive, the modified filler mixture comprises modified aluminum oxide and biphenyl tellurium, and a preparation method of the modified aluminum oxide comprises the following steps: insulating aluminum oxide powder at 90-100 DEG C for 2-3 hours to obtain activated powder, dispersing the activated powder in ethyl acetate to obtain a dispersion liquid, adding a coupling agent and 2, 4-diphenyl-1, 3-pentanedione into the dispersion liquid, and stirring to obtain the modified aluminum oxide. Stirring and reacting with 2, 3-difluoropyridine, filtering out, and drying to obtain the modified aluminum oxide. According to the present invention, the strength and the rutting resistance of the cured asphalt mixture at the high temperature can be significantly improved, and the crack resistance at the low temperature can be improved.
本发明提供了一种耐温型沥青混合物及其制备方法，涉及沥青技术领域。本发明提供的沥青混合物以重量份计包括以下组分：50‑60份骨料、20‑30份集料、10‑15份基质沥青、5‑10份改性填料混合物、1‑5份功能助剂；所述改性填料混合物包括改性氧化铝和联苯二碲，所述改性氧化铝的制备方法包括以下步骤：将氧化铝粉末在90‑100℃保温2‑3h后制得活化粉末，将活化粉末分散在乙酸乙酯内制得分散液，向分散液内加入偶联剂与2,3‑二氟吡啶搅拌反应后滤出烘干，制得改性氧化铝。本发明能够显著提高沥青混合物固化后的在高温下的强度和耐车辙性，提高在低温下的抗裂性能。
Temperature-resistant asphalt mixture and preparation method thereof
The invention provides a temperature-resistant asphalt mixture and a preparation method thereof, and relates to the technical field of asphalt. The asphalt mixture provided by the invention is prepared from the following components in parts by weight: 50 to 60 parts of aggregate, 20 to 30 parts of aggregate, 10 to 15 parts of matrix asphalt, 5 to 10 parts of modified filler mixture and 1 to 5 parts of functional additive, the modified filler mixture comprises modified aluminum oxide and biphenyl tellurium, and a preparation method of the modified aluminum oxide comprises the following steps: insulating aluminum oxide powder at 90-100 DEG C for 2-3 hours to obtain activated powder, dispersing the activated powder in ethyl acetate to obtain a dispersion liquid, adding a coupling agent and 2, 4-diphenyl-1, 3-pentanedione into the dispersion liquid, and stirring to obtain the modified aluminum oxide. Stirring and reacting with 2, 3-difluoropyridine, filtering out, and drying to obtain the modified aluminum oxide. According to the present invention, the strength and the rutting resistance of the cured asphalt mixture at the high temperature can be significantly improved, and the crack resistance at the low temperature can be improved.
本发明提供了一种耐温型沥青混合物及其制备方法，涉及沥青技术领域。本发明提供的沥青混合物以重量份计包括以下组分：50‑60份骨料、20‑30份集料、10‑15份基质沥青、5‑10份改性填料混合物、1‑5份功能助剂；所述改性填料混合物包括改性氧化铝和联苯二碲，所述改性氧化铝的制备方法包括以下步骤：将氧化铝粉末在90‑100℃保温2‑3h后制得活化粉末，将活化粉末分散在乙酸乙酯内制得分散液，向分散液内加入偶联剂与2,3‑二氟吡啶搅拌反应后滤出烘干，制得改性氧化铝。本发明能够显著提高沥青混合物固化后的在高温下的强度和耐车辙性，提高在低温下的抗裂性能。
Temperature-resistant asphalt mixture and preparation method thereof
耐温型沥青混合物及其制备方法
SU WENWU (Autor:in) / LUO HONGWEI (Autor:in) / WU MIAOFENG (Autor:in)
20.12.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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