液化剂对混凝土工作性能影响的试验研究  

Research on the influence of the concrete working performance with the liquifier

作　　者：胡师杰 权磊 凌海宇 贺凯涵 HU Shijie;QUAN Lei;LING Haiyu;HE Kaihan(School of Civil and Transportaion Engineering,Hebei University of Technology,Tianjin 300401,China;The Ministry of Transport Highway Research Institute,Beijing 100088,China)

机构地区：[1]河北工业大学土木与交通学院,天津300401 [2]交通运输部公路科学研究所,北京100088

出　　处：《混凝土》2018年第9期100-102,共3页Concrete

基　　金：广西科技计划项目(桂科AC16380105);国家自然科学基金青年科学基金项目(51608239)

摘　　要：在水泥混凝土路面施工中,混凝土材料的工作性能对施工过程产生了直接影响。研究了混凝土液化剂的掺入对混凝土工作性能的影响,并以立模特性、振动液化时间、振动出浆量以及新拌混凝土贯入阻力对其工作性能进行评价。试验表明:在保持坍落度相同的情况下,混凝土液化剂的掺入有效的提高了其工作性能,其立模特性横向变形小于10 mm;振动液化时间总体保持在30 s;振动出浆量为1.0~1.2 kg;贯入阻力处于较低水平;较其他混凝土外加剂均有所提高。在实际施工中可有效提高施工进度,保证提高施工质量,对滑模施工工艺的提高有积极影响。The working performance of concrete material has a direct impact on the construction process in the pavement construction.This paper studies the effect on liquifier which is mixed in to concrete,and evaluate the performance by modeling characteristics;Liquefaction time;the quantity of mortar and concrete penetration resistance.The result shows that the concrete working performance will be improved when the liquifier mixed in,lateral deformation is less than 10 mm;liquefaction time is generally maintained at 30 s;the quantity of mortar is 1.0~1.2 kg as well as the concrete penetration resistance is low.In practice,the speed of construction progress can be effectively improved,as well as the construction quality,and it has a positive effect on the construction technology of slipform pavement.

关 键 词：混凝土工作性 液化剂 立模特性 液化时间 出浆量 贯入阻力 

分 类 号：TU528.042[建筑科学—建筑技术科学]