This paper summarizes heating technology of hot-in-place recycling at home and abroad,and brings forward a new heating technology of infrared radiation with diesel oil.

Aiming at the questions of the hot-in-place recycling roadmix in use, the paper analyzes thestructure and working principle of the spray control system.

Analysis on effect and calculation on thermal balance of hot in-place recycling for asphalt pavement;

Been as an effective aged pavement maintenance method, hot in-place recycling (HIR) technology has shown prominent advantages.

Taking the hot in-place recycling technology as the study object,this paper studies the key technology,such as the survey and evaluation of the original road,the mix ratio design of recycling asphalt mixture,and the performance verification of recycling asphalt mixture.

Study on the In-place Hot Recycling Technology of Asphalt Pavement;

On the basis of investigating old asphalt pavement, extraction and screening test about old pavement of asphalt mixture is conducted to study on the mixing design ratio and the construction scheme of pavement in-place hot recycling.

Research of depth control system of milling equipment in hot reproducer on the spot;

Analysis of applicability of asphalt pavement hot in-place recycling technology;