聚酰胺基树脂型沥青路面浅槽快速修补材料的制备与性能研究

doi:10.11896/cldb.22050191

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Abstract Potholes are common early asphalt pavement disease, if not timely repair and disposal, which will result in traffic safety and road service life. In order to solve the problems of low initial strength, weak interfacial adhesion and poor durability of traditional Cold Mix Patching Materials (CMPMs), this study has developed a new polyamide-based resin type rapid repair material for asphalt pavement shallow groove. Polyamide 6 (PA6) used as the base resin was compounded with polypropylene (PP), ethylene-vinyl acetate copolymer (EVA) and maleic anhydride grafted ethylene- octene copolymer (POE-g-MAH) in proportion to the repair material, and the shallow groove fast repair material is made by extrusion granulation. The elastic modulus, yield strength and bending strength of the repair material were investigated using flexural strength tests. The low-temperature impact resistance and low-temperature tensile tests were used to explore the low-temperature toughness of the repair material. The melt index test was conducted to expose the advantages and disadvantages in practice use of repairing materials. The water immersion test was employed to analyze the water absorption capacity of the repair material, and the scanning electron microscope was used to observe the microstructure of low temperature fracture surface of the repair material. Then the key chemical reaction of repair material was explored by an infrared spectroscopy test. The results showed that the negative effects on the elastic modulus, yield strength, bending strength and low-temperature toughness of the repair material gradually strengthened as the increasing content. The PP content increased from 0% to 30%, the melt index of repair material decreased from 15.6 g/10 min to 3 g/10 min, which seriously affected the construction quality at this time. The PP exhibited a good improvement on the water absorption of the repair material, when the PP content increased from 10% to 20%, the saturated water content reduced from 5.6% to 3.9%; the presence of amino groups inside PA6 and the compatibilization reaction of maleic anhydride in POE-g-MAH improved the PA6/PP interfacial tension, and thus improved compatibility between them. Based on the experimental study, the optimal PP content is considered to be 10% to 20%.

Key words： asphalt pavement shallow groove repair material polyamide 6 polypropylene mechanical property

Published: 25 October 2023 Online: 2023-10-19

CLC number:

TU414

Fund:National Natural Science Foundation of China(51308084), the Fundamental Research Funds for the Central Universities (3132017029), Special Project for ‘Double First Class’ Construction of Dalian Maritime University (BSCXXM021), Liaoning Highway Science and Technology Innovation Key Scientific Research Project (201701), and Dalian Science and Technology Innovation Fund Project (2020JJ26SN062).

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	Articles by authors
	ZHANG Jun
	GUO Naisheng
	LYU Xin
	CHU Zhaoyang
	FANG Chenze

Cite this article:

ZHANG Jun,GUO Naisheng,LYU Xin, et al. Preparation and Properties of Polyamide-based Resin Type Rapid Repair Material for Asphalt Pavement Shallow Groove[J]. Materials Reports, 2023, 37(20): 22050191-7.

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http://www.mater-rep.com/EN/10.11896/cldb.22050191 OR http://www.mater-rep.com/EN/Y2023/V37/I20/22050191

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