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Research review of asphalt mixture microcapsules selfhealing technology(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2018年02期
Page:
9-18
Research Field:
道路工程
Publishing date:

Info

Title:
Research review of asphalt mixture microcapsules selfhealing technology
Author(s):
HE Liang1; 2;  CAI Zhuo1;  FENG Chang3;  GARCIA Alvaro4;  MA Yu1
(1. National and Local Joint Engineering Laboratory of Traffic Civil Engineering Materials, Chongqing JiaotongUniversity, Chongqing 400074, China；3.. Nottingham TransportationEngineering Centre, University of Nottingham, Nottingham NG7 2RD, Nottinghamshire, United Kingdom）
Keywords:
road engineering;  asphalt mixture;  selfhealing;  encapsulation healing agent;  research review
PACS:
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DOI:
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Abstract:
〖WTBZ〗〖HQK〗In order to further promote the development and application of the selfhealing technology of microcapsules in the field of Chinese road engineering, the newest research on the selfhealing technology of asphaltmixture microcapsules at home and abroad were comprehensively analyzed. The basic principle, research status and progress of selfhealing technology of microcapsules were summarized. The performance characterization method of selfhealing microcapsules and the selfhealing performance evaluation method of the asphalt material with microcapsules were systematically hackled. And the merits and demerits of different evaluation methods were emphatically analyzed. On this basis, the design methods of the selfhealing microcapsules of asphalt mixture were summarized from three aspects, namely the selection of capsulecore materials, the development of capsulewall materials and the particle size and shape of microcapsules. The latest outdoor study advances of the selfhealing microcapsules of asphalt mixture were introduced. The results show that some problems of the selfhealing technology microcapsules of asphalt mixture in current researches are pointed out, for instance, studies on road performance are not systematic, the evaluation methods are immature, and the design methods of microcapsules are imperfect. And the tendency of the research is to discussed the multidimensional force characteristics of microcapsules in asphalt mixture through the numerical simulation method, which provides reliable theories for the fine design of microcapsules， many times released and high durable microcapsules are developing to play the selfhealing role during the whole pavement premaintenance cycle; the maintenance technology of composite selfhealing pavement is researched and developed to achieve selfhealing of asphalt pavement in suitable time during the premaintenance period. 1 tab, 5 figs, 51 refs.

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Last Update: 2018-04-03