A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention belongs to the technical field of pavement materials, and discloses an asphalt pavement material containing waste tire rubber powder and a preparation process thereof.The asphalt pavement material is prepared from, by weight, 80-120 parts of matrix asphalt, 5-10 parts of SBS, 30-45 parts of activated tire rubber powder, 330-420 parts of coarse aggregate, 250-280 parts of fine aggregate, 100-160 parts of reinforced fiber, 40-65 parts of mineral admixture and 1-3 parts of stabilizer. The activated tire rubber powder is prepared by performing microwave regeneration on waste tire powder under the action of an activating agent and a softening agent, and the reinforced fibers are prepared from steel fibers and modified lignin/polyvinyl alcohol composite fibers according to the mass ratio of (8-10): 1. According to the invention, the compound activator is utilized to activate the waste tires to obtain the modified rubber powder with high affinity and high surface activity, and then the modified rubber powder and SBS are utilized to perform compound modification on the asphalt, so that the comprehensive performance of the asphalt can be improved; the asphalt pavement material prepared by compounding the modified asphalt, the aggregate and the reinforced fiber has good high-temperature stability and low-temperature crack resistance.
本发明属于路面材料技术领域，公开了一种含有废旧轮胎胶粉的沥青路面材料及其制备工艺，沥青路面材料包括以下重量份组分：基质沥青80～120份、SBS 5～10份、活化轮胎胶粉30～45份、粗骨料330～420份、细骨料250～280份、增强纤维100～160份、矿物掺合料40～65份、稳定剂1～3份，所述活化轮胎胶粉是由废旧轮胎粉末在活化剂和软化剂的作用下微波再生制得，所述增强纤维由钢纤维与改性木质素/聚乙烯醇复合纤维按8～10：1的质量比组成。本发明利用复配活化剂对废旧轮胎进行活化处理，获得了高亲和性、高表面活性的改性胶粉，再利用改性胶粉、SBS对沥青进行复合改性，可以改善沥青综合性能，改性沥青与骨料和增强纤维复合制得沥青路面材料具有良好的高温稳定性及低温抗裂性能。
The invention belongs to the technical field of pavement materials, and discloses an asphalt pavement material containing waste tire rubber powder and a preparation process thereof.The asphalt pavement material is prepared from, by weight, 80-120 parts of matrix asphalt, 5-10 parts of SBS, 30-45 parts of activated tire rubber powder, 330-420 parts of coarse aggregate, 250-280 parts of fine aggregate, 100-160 parts of reinforced fiber, 40-65 parts of mineral admixture and 1-3 parts of stabilizer. The activated tire rubber powder is prepared by performing microwave regeneration on waste tire powder under the action of an activating agent and a softening agent, and the reinforced fibers are prepared from steel fibers and modified lignin/polyvinyl alcohol composite fibers according to the mass ratio of (8-10): 1. According to the invention, the compound activator is utilized to activate the waste tires to obtain the modified rubber powder with high affinity and high surface activity, and then the modified rubber powder and SBS are utilized to perform compound modification on the asphalt, so that the comprehensive performance of the asphalt can be improved; the asphalt pavement material prepared by compounding the modified asphalt, the aggregate and the reinforced fiber has good high-temperature stability and low-temperature crack resistance.
本发明属于路面材料技术领域，公开了一种含有废旧轮胎胶粉的沥青路面材料及其制备工艺，沥青路面材料包括以下重量份组分：基质沥青80～120份、SBS 5～10份、活化轮胎胶粉30～45份、粗骨料330～420份、细骨料250～280份、增强纤维100～160份、矿物掺合料40～65份、稳定剂1～3份，所述活化轮胎胶粉是由废旧轮胎粉末在活化剂和软化剂的作用下微波再生制得，所述增强纤维由钢纤维与改性木质素/聚乙烯醇复合纤维按8～10：1的质量比组成。本发明利用复配活化剂对废旧轮胎进行活化处理，获得了高亲和性、高表面活性的改性胶粉，再利用改性胶粉、SBS对沥青进行复合改性，可以改善沥青综合性能，改性沥青与骨料和增强纤维复合制得沥青路面材料具有良好的高温稳定性及低温抗裂性能。
Asphalt pavement material containing waste tire rubber powder and preparation process thereof
一种含有废旧轮胎胶粉的沥青路面材料及其制备工艺
MENG KE (author)
2023-12-29
Patent
Electronic Resource
Chinese
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