The Quality Control Research Of RAP Material Mixing Plant Thermal Regeneration Mixes

According to the statistics and analysis of the related survey data, the proportionof the asphalt pavement is up to nearly90%in our country’s highway that has beenbuilt. The asphalt concrete pavement’s design life is15years in general. In fact, theactual service life is generally only10years or so. Usually, the asphalt concretepavement need to be overhauled every8～10years. How to deal with every yeartens of millions of tons of waste asphalt concrete pavement will become the problemthat must be faced and solved. So, the study of RAP material and regeneration processanalysis, it is vital significant to improve circulation utilization of the old, saveresources and protect the environment.Based on "the recycling technology of low carbon emissions of waste material ofasphalt concrete pavement " research, through the analysis of the RAP old material’sproperties and variability and combined with the study of the regeneration mixturequality control index, this paper Proposed the measures of plant mix thermalregenerative regeneration mixture production process quality control technical.Through the theory of quality control and the research of plant mix thermalregenerative technology, combined with The Technical Specification for HighwayAsphalt Pavement and Regeneration, this paper puts forward the regeneration mixturequality control index system, and comes to the key points of the quality control of theregeneration mixture through the use of analytical hierarchy process (AHP). Throughthe test of RAP material performance and its variability, Research group analyzed theconclusion of the test and put forward the characteristics of the RAP materialperformance and the variability. In order to have a better way to control the variabilityof RAP material, this paper presents the process of the RAP material pretreatment.And RAP old material recovery, crushing, screening, storage quality control technicalmeasures as well as the benchmark material synthesis methods are analyzed. At thesame time, in order to guarantee the quality of reclaimed mixture, the research groupanalyzed the regeneration process of the Plant mix thermal regenerative and thecontrol of equipment’s selection, put forward the quality control technical measures ofthe regeneration process of the plant mix thermal regenerative, and carried on theanalysis summary of the main points of the quality control of the plant mix thermalregenerative material’s loading, mixing and discharge phase.