Application Research of Base Layer Cold Recycling Technology in Overhaul Engineering

Xiangyu Qi1, Huishan Bai2, Xiao Shen2, Yunbo Zhu2

1Yunnan Research Institute of Highway Science and Technology, Kunming, 650011, China

2Yunnan Transport Science Research Institute CoLtd, Kunming, 650011, China

Abstract: This paper relies on the World Bank loan Yunnan road maintenance pilot project, summarizes the construction process of cold recycled mixture, relies on the concrete engineering to check the fatigue cracking of inorganic binder layer, and proposes the base layer cold regeneration top surface acceptance deflection value, comparative analysis of the base layer cold The advantages and disadvantages and economic benefits of the recycled pavement structure and the common new pavement structure are summarized. The problems and measures to be paid attention to in the cold recycling technology of the grassroots are summarized, so as to save the cost of overhaul engineering and generate energy saving and environmental protection benefits.

Keywords: Base layer; Cold recycling technology; Overhaul engineering; Application