The Research On Key Technology Of Bituminous Concrete Impermeable-Core-Wall In Cold Region

Bituminous concrete impermeable body's advantages include simple structure, works less, speedy construction,safe and reliable impermeable performance and so on. So bituminous concrete is used more and more important in Water Resources and Hydropower Engineering. Kelasuke water conservancy project upstream and downstream cofferdam's bituminous concrete impermeable-core-wall in Xin Jiang Province is constructed in Winter, upstream and downstream cofferdams are designed bituminous concrete pouring impermeable-core-wall rockfill cofferdams. According to the relevant provisions, carry out scientific research in the choice of raw materials, mix design, yest and construction. Starting from the actual project, analysis these key technologies in construction and provide scientific basis for guaranteeing core-wall quality.Temperature control of bituminous concrete is the project's key. In this project,use double bituminous Canadian reguo that is self-invented. It's capacity is suited to construction dosage everyday. Not only simplify the construction equipment,but also reduce the construction cost. Heat asphalt through heating-HTF that is cycled in Canadian reguo. Control the temperature of asphalt through controlling the temperature of HTF.Complete process test before official construction in specific construction environment. Analyze and study Seriously every stages including bituminous mixture that is mixed and transported in specific construction. And develop early targeted solutions to problems existed. According to the actual situation, construction methods of bituminous concrete is developed two sets .The second set of construction method could avoid contradiction between in temperature and FORM REMOVAL. Using the second set of construction method could achieve streamlined operations, be continuous and rapid construction and meet the overall requirements of strength and progress. So the construction cost is low and process is simple.Core test,in specific construction,is direct and true method to asphalt core-wall quality. According to the relevant provisions,does core test to core wall. Analysize core samples and evaluate,really and objectively,core-wall construction quality.