China Plastics ›› 2025, Vol. 39 ›› Issue (8): 107-112.DOI: 10.19491/j.issn.1001-9278.2025.08.017

• Plastic and Environment • Previous Articles     Next Articles

Study on bonding strength and road application performance of multi⁃environment waste rubber⁃modified asphalt chip seal matrix structure

CHEN Ziqiang1,2(), ZHANG Shaocheng3, ZHANG Guiming3, BAI Congqi3, LI Guoliang4   

  1. 1.School of Civil Engineering and Architecture,Kunming University of Science and Technology,Kunming 650500,China
    2.Yunnan Provincial Transportation Development Investment Co,Ltd,Kunming 650103,China
    3.Yunnan Highway Science and Technology Research Institute,Kunming 650103,China
    4.School of Civil Engineering and Architecture,Kunming University of Science and Technology,Kunming 650500,China
  • Received:2024-09-23 Online:2025-08-26 Published:2025-07-30

Abstract:

This study investigated the bonding mechanical properties of chip seal matrix structures under three environmental conditions (dry, natural, and moist) through laboratory testing. The development of structural strength over time was evaluated, and the optimal asphalt application rates for precoating were identified. Results indicated that moist conditions provided the most favorable environment for early⁃stage precoating, establishing it as the preferred initial construction phase for chip seals. Comparative analysis of all three conditions under controlled indoor testing was carryout out using both standard chip spreading rates and theoretically optimal asphalt application rates, and the results consistently showed superior performance in moist conditions. These findings indicate that moist environments yield the most effective construction conditions for chip seal matrix structures overall, offering practical guidance for pavement engineering applications.

Key words: chip seal, structural skeleton layer, pre?coating, matrix structure, crumb rubber?modified asphalt

CLC Number: