Research On The Application Of Lime-fly Ash-stabilized CementBase In-situ Cold Reuse Technology

During the 13th five year plan,recycling use of milling material will still be one of the most important direction of road maintenance engineering.For now,milling and repainting technique is the main maintenance measures.Cement cold in-place recycling technology has the remarkable economic benefits.So it is necessary and worthy to research deeply on this technology.For this purpose,the project makes research on the cement cold in-place technology with test sections,in order to provide the basis for the specifications.Firstly,this project investigates and survey of the domestic and overseas research actuality,with the contrastive analysis of material property among lime-fly-ash bound,cement stabilized gravel and new aggregate,make the conclusion of raw material quality control specification.Secondly,by the contrastive research of different molding measures,including static pressure molding and vibration molding,and according to tests of the maximum dry density and unconfined compressive strength,recommend vibration molding to be the appropriate molding method.Thirdly,research on the different factors,including aggregate,crushing value,different curing conditions,molding delay time,and failure mode,and grasp the rule of dry shrinkage properties and temperature shrinkage properties.Fourthly,according to observation of the test sections,make the evaluation of different cement content,new aggregate content,recycling depth,and basic types,and for the support of engineering application promotion.According to the research of raw material,molding method,performance,and construction technology,the project is worthy to guide cement cold in-place recycling construction.Meanwhile.