根据我国国情,混凝土冬期施工中应用外加剂十分普遍,而采用掺外加剂的蓄热法施工又是我国三北地区冬期施工中应用最广泛的一项技术措施。冬施混凝土早期强度的测定十分困难且误差很大,冬施混凝土试块(包括同条件试块)亦没有很好的代表性,因此很难保证混凝土质量,为测算采用综合蓄热法施工的混凝土的早期强度,保证冬期施工中掺外加剂混凝土的质量,进而加强对冬施混凝土的全面质量管理,由北京市建筑工程研究所负责,北京市建筑工程总公司计划处、科技处,北京市第 According to China’s national conditions, the application of concrete admixtures in winter construction is very common, and the use of thermal storage method with admixtures is the most widely used technical measure in the construction of winter in northern China. The early strength of winter concrete is very difficult to measure and the error is very large. The winter sample concrete block (including the same condition test block) is also not very representative, so it is difficult to guarantee the quality of the concrete. To measure the use of integrated thermal storage method construction The early strength of concrete guarantees the quality of concrete admixed with additives during winter construction, and then strengthens the overall quality management of the winter applied concrete. The Beijing Institute of Civil Engineering and Construction is responsible for the project, Beijing Construction Engineering Corporation Planning Office, Science and Technology Department, Beijing The first