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A platform for research: civil engineering, architecture and urbanism
Fiber-free low-carbon SMA asphalt mixture and mixing method thereof
The invention discloses a preparation method of a fiber-free low-carbon SMA asphalt mixture, the fiber-free low-carbon SMA asphalt mixture comprises the following raw materials: a mineral aggregate and asphalt, and the mass ratio of the asphalt to the mineral aggregate is (4.8-5.8): 100; the mineral aggregate comprises 10 to 17 mm coarse aggregate, 5 to 10 mm coarse aggregate, machine-made sand and mineral powder, and the mass ratio of the 10 to 17 mm coarse aggregate to the 5 to 10 mm coarse aggregate to the machine-made sand to the mineral powder is (31 to 32) to (43 to 44) to (14 to 15) to (10 to 11); the asphalt contains a surfactant with the mass content of 0.5%; the surfactant is a mixture of fatty amine polyoxyethylene ether, fatty alcohol polyoxyethylene ether, epoxidized soybean oil and cocamidopropyl hydroxy sulfobetaine. Through selective compounding of the surfactant and optimization of SMA gradation, the mixing temperature is reduced, energy consumption and waste gas emission are reduced, the asphalt viscosity is increased, wood fibers in an SMA mixture are removed, and the SMA mixture is prevented from leaking and flooding; meanwhile, the asphalt consumption is reduced, and the structural stability is improved.
本发明公开了一种无纤维低碳SMA沥青混合料的制备方法，无纤维低碳SMA沥青混合料，其原料包括：矿料和沥青，其中，沥青与矿料的质量比为(4.8～5.8)：100；矿料包括：10～17mm粗集料、5‑10mm粗集料、机制砂和矿粉，10～17mm粗集料、5～10mm粗集料、机制砂和矿粉的质量比为(31～32):(43～44):(14～15):(10～11)；沥青中含质量含量为0.5％的表面活性剂；表面活性剂为脂肪胺聚氧乙烯醚、脂肪醇聚氧乙烯醚、环氧大豆油和椰油酰胺丙基羟磺基甜菜碱的混合物。本申请通过表面活性剂的选择复配及优化SMA级配的方式，降低了拌合温度，减少了能源消耗和废气排放，增大了沥青粘度，去除了SMA混合料中的木质纤维，不使SMA混合料出现析漏、泛油现象；同时减少了沥青用量，提高了结构稳定性。
Fiber-free low-carbon SMA asphalt mixture and mixing method thereof
The invention discloses a preparation method of a fiber-free low-carbon SMA asphalt mixture, the fiber-free low-carbon SMA asphalt mixture comprises the following raw materials: a mineral aggregate and asphalt, and the mass ratio of the asphalt to the mineral aggregate is (4.8-5.8): 100; the mineral aggregate comprises 10 to 17 mm coarse aggregate, 5 to 10 mm coarse aggregate, machine-made sand and mineral powder, and the mass ratio of the 10 to 17 mm coarse aggregate to the 5 to 10 mm coarse aggregate to the machine-made sand to the mineral powder is (31 to 32) to (43 to 44) to (14 to 15) to (10 to 11); the asphalt contains a surfactant with the mass content of 0.5%; the surfactant is a mixture of fatty amine polyoxyethylene ether, fatty alcohol polyoxyethylene ether, epoxidized soybean oil and cocamidopropyl hydroxy sulfobetaine. Through selective compounding of the surfactant and optimization of SMA gradation, the mixing temperature is reduced, energy consumption and waste gas emission are reduced, the asphalt viscosity is increased, wood fibers in an SMA mixture are removed, and the SMA mixture is prevented from leaking and flooding; meanwhile, the asphalt consumption is reduced, and the structural stability is improved.
本发明公开了一种无纤维低碳SMA沥青混合料的制备方法，无纤维低碳SMA沥青混合料，其原料包括：矿料和沥青，其中，沥青与矿料的质量比为(4.8～5.8)：100；矿料包括：10～17mm粗集料、5‑10mm粗集料、机制砂和矿粉，10～17mm粗集料、5～10mm粗集料、机制砂和矿粉的质量比为(31～32):(43～44):(14～15):(10～11)；沥青中含质量含量为0.5％的表面活性剂；表面活性剂为脂肪胺聚氧乙烯醚、脂肪醇聚氧乙烯醚、环氧大豆油和椰油酰胺丙基羟磺基甜菜碱的混合物。本申请通过表面活性剂的选择复配及优化SMA级配的方式，降低了拌合温度，减少了能源消耗和废气排放，增大了沥青粘度，去除了SMA混合料中的木质纤维，不使SMA混合料出现析漏、泛油现象；同时减少了沥青用量，提高了结构稳定性。
Fiber-free low-carbon SMA asphalt mixture and mixing method thereof
一种无纤维低碳SMA沥青混合料及其拌和方法
TAN CHENLU (author) / CHEN ZHIGEN (author) / LYU WENJUAN (author) / TAN YIFEI (author) / YUAN RUIXING (author) / QIU TIAN (author) / HU XIANZHONG (author) / WAN SHIJIANG (author)
2024-08-13
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Carbon fiber rubber modified asphalt mixture and preparation method thereof
| European Patent Office | 2021