Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Anti-rutting recycled asphalt mixture and processing technology thereof
The invention discloses an anti-rutting recycled asphalt mixture and a processing technology thereof. The recycled asphalt mixture is prepared from the following materials in parts by weight: 60 to 80 parts of waste asphalt, 20 to 30 parts of asphalt, 15 to 25 parts of regenerant, 15 to 25 parts of filler, 45 to 60 parts of coarse aggregate, 5 to 10 parts of carbon nanotube-basalt fiber material and 10 to 15 parts of modified montmorillonite. The carbon nanotubes are grafted after being subjected to carboxylation modification, so that the compatibility of the carbon nanotubes and SBS is improved, and the basalt fibers and the diatomite are added for combined use, so that the asphalt is prevented from being deformed under the action of external force. Meanwhile, the Na-montmorillonite is grafted, so that the thermal stability of the asphalt is improved. The interlamellar spacing of Na-montmorillonite is enlarged, molecular chains in the asphalt can enter the asphalt easily, polar groups in the asphalt can react with isocyanate groups, molecular chain movement of the asphalt is hindered, and therefore the hardness and thermal stability of the asphalt are reduced and improved. The asphalt mixture prepared by the invention has high-temperature stability, high thermal stability and rutting resistance, high hardness and aging resistance.
本发明公开了一种抗车辙再生沥青混合料及其加工工艺；所述再生沥青混合料所需材料包括，以重量计：废旧沥青60‑80份、沥青20‑30份、再生剂15‑25份、填料15‑25份、粗集料45‑60份、碳纳米管‑玄武岩纤维材料5‑10份、改性蒙脱土10‑15份。本发明对碳纳米管进行羧基化改性后，接枝，提高其与SBS的相容性，加入玄武岩纤维和硅藻土联合使用，避免沥青在外力作用下产生形变。同时，对钠基蒙脱土进行接枝，提高了沥青的热稳定性。钠基蒙脱土的层间距扩大，有利于沥青中分子链的进入，同时沥青中的极性基团会与异氰酸基发生反应，阻碍沥青的分子链运动，因此降低提高了沥青的硬度以及热稳定性。本发明制备的沥青混合料具有高温稳定性、热稳定抗车辙能力强、硬度高、耐老化。
Anti-rutting recycled asphalt mixture and processing technology thereof
The invention discloses an anti-rutting recycled asphalt mixture and a processing technology thereof. The recycled asphalt mixture is prepared from the following materials in parts by weight: 60 to 80 parts of waste asphalt, 20 to 30 parts of asphalt, 15 to 25 parts of regenerant, 15 to 25 parts of filler, 45 to 60 parts of coarse aggregate, 5 to 10 parts of carbon nanotube-basalt fiber material and 10 to 15 parts of modified montmorillonite. The carbon nanotubes are grafted after being subjected to carboxylation modification, so that the compatibility of the carbon nanotubes and SBS is improved, and the basalt fibers and the diatomite are added for combined use, so that the asphalt is prevented from being deformed under the action of external force. Meanwhile, the Na-montmorillonite is grafted, so that the thermal stability of the asphalt is improved. The interlamellar spacing of Na-montmorillonite is enlarged, molecular chains in the asphalt can enter the asphalt easily, polar groups in the asphalt can react with isocyanate groups, molecular chain movement of the asphalt is hindered, and therefore the hardness and thermal stability of the asphalt are reduced and improved. The asphalt mixture prepared by the invention has high-temperature stability, high thermal stability and rutting resistance, high hardness and aging resistance.
本发明公开了一种抗车辙再生沥青混合料及其加工工艺；所述再生沥青混合料所需材料包括，以重量计：废旧沥青60‑80份、沥青20‑30份、再生剂15‑25份、填料15‑25份、粗集料45‑60份、碳纳米管‑玄武岩纤维材料5‑10份、改性蒙脱土10‑15份。本发明对碳纳米管进行羧基化改性后，接枝，提高其与SBS的相容性，加入玄武岩纤维和硅藻土联合使用，避免沥青在外力作用下产生形变。同时，对钠基蒙脱土进行接枝，提高了沥青的热稳定性。钠基蒙脱土的层间距扩大，有利于沥青中分子链的进入，同时沥青中的极性基团会与异氰酸基发生反应，阻碍沥青的分子链运动，因此降低提高了沥青的硬度以及热稳定性。本发明制备的沥青混合料具有高温稳定性、热稳定抗车辙能力强、硬度高、耐老化。
Anti-rutting recycled asphalt mixture and processing technology thereof
一种抗车辙再生沥青混合料及其加工工艺
GE MINGFENG (Autor:in) / TANG XIAOHUI (Autor:in) / DENG WANJUN (Autor:in) / LI ZEFENG (Autor:in) / LI TING (Autor:in)
03.06.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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