A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation method of cold-mixed fully-recycled asphalt mixture based on solvent type liquid asphalt
The invention relates to a preparation method of a cold-mixed fully-recycled asphalt mixture based on solvent type liquid asphalt. The method comprises the following steps: weighing water-based epoxy resin and a dibutyltin dilaurate curing agent which are commonly called as a water-based epoxy system, and weighing solvent type liquid asphalt according to the mass ratio of asphalt to the epoxy system of (1: 0.2)-(1: 0.4); uniformly stirring the epoxy resin, the curing agent and the solvent type liquid asphalt at normal temperature; drying the recycled asphalt mixture at 60 DEG C until the weight is constant; and adding the water-based epoxy solvent type liquid asphalt obtained by stirring and mixing according to the asphalt-aggregate ratio of 4.5-6.5%, adding mineral powder accounting for 10-20% of the mass of the recycled asphalt mixture and cement accounting for 2-4% of the mass of the recycled asphalt mixture, and stirring for 1 minute to obtain the asphalt mixture. According to the invention, no new aggregate is added, the solvent type liquid asphalt which is simpler in preparation mode and more stable in performance is used for replacing common emulsified asphalt, and the adhesive property of the solvent type liquid asphalt is improved through a high-dosage water-borne epoxy resin system.
一种基于溶剂型液体沥青的冷拌全再生沥青混合料的制备方法。所述方法：称取水性环氧树脂和二月桂酸二丁基锡固化剂，环氧树脂和固化剂共同称作水性环氧体系，按沥青：环氧体系质量比1：0.2～1：0.4称取溶剂型液体沥青；常温下，将环氧树脂、固化剂和溶剂型液体沥青搅拌均匀；将沥青混合料回收料在60℃下烘干至恒重；按油石比4.5％～6.5％加入搅拌混合后得到的水性环氧溶剂型液体沥青，加入沥青混合料回收料质量10％～20％的矿粉与2～4％的水泥，拌合1min，得到沥青混合料。本发明不掺加任何新集料，且使用制备方式更加简单、性能更加稳定的溶剂型液体沥青代替常用的乳化沥青，通过高掺量水性环氧树脂体系改善溶剂型液体沥青的粘结性能。
Preparation method of cold-mixed fully-recycled asphalt mixture based on solvent type liquid asphalt
The invention relates to a preparation method of a cold-mixed fully-recycled asphalt mixture based on solvent type liquid asphalt. The method comprises the following steps: weighing water-based epoxy resin and a dibutyltin dilaurate curing agent which are commonly called as a water-based epoxy system, and weighing solvent type liquid asphalt according to the mass ratio of asphalt to the epoxy system of (1: 0.2)-(1: 0.4); uniformly stirring the epoxy resin, the curing agent and the solvent type liquid asphalt at normal temperature; drying the recycled asphalt mixture at 60 DEG C until the weight is constant; and adding the water-based epoxy solvent type liquid asphalt obtained by stirring and mixing according to the asphalt-aggregate ratio of 4.5-6.5%, adding mineral powder accounting for 10-20% of the mass of the recycled asphalt mixture and cement accounting for 2-4% of the mass of the recycled asphalt mixture, and stirring for 1 minute to obtain the asphalt mixture. According to the invention, no new aggregate is added, the solvent type liquid asphalt which is simpler in preparation mode and more stable in performance is used for replacing common emulsified asphalt, and the adhesive property of the solvent type liquid asphalt is improved through a high-dosage water-borne epoxy resin system.
一种基于溶剂型液体沥青的冷拌全再生沥青混合料的制备方法。所述方法：称取水性环氧树脂和二月桂酸二丁基锡固化剂，环氧树脂和固化剂共同称作水性环氧体系，按沥青：环氧体系质量比1：0.2～1：0.4称取溶剂型液体沥青；常温下，将环氧树脂、固化剂和溶剂型液体沥青搅拌均匀；将沥青混合料回收料在60℃下烘干至恒重；按油石比4.5％～6.5％加入搅拌混合后得到的水性环氧溶剂型液体沥青，加入沥青混合料回收料质量10％～20％的矿粉与2～4％的水泥，拌合1min，得到沥青混合料。本发明不掺加任何新集料，且使用制备方式更加简单、性能更加稳定的溶剂型液体沥青代替常用的乳化沥青，通过高掺量水性环氧树脂体系改善溶剂型液体沥青的粘结性能。
Preparation method of cold-mixed fully-recycled asphalt mixture based on solvent type liquid asphalt
一种基于溶剂型液体沥青的冷拌全再生沥青混合料的制备方法
CHEN YUHENG (author) / YI JUNYAN (author) / YU WEN (author) / FENG DECHENG (author)
2021-11-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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