冬期混凝土施工快速保温方案的研究

Study on Rapid Thermal Insulation Scheme for Concrete Construction in Winter

JC水电站20号、21号导流明渠改建坝段集中在冬季低温时段施工,受外界气候环境影响很大,温控防裂难度大,需要优选大坝混凝土保温方案以确保大坝混凝土防裂安全,保障混凝土的整体施工质量。从工程实际出发,阐述了对混凝土冬期施工快速保温方案进行的研究,所取得的经验可为后续类似工程借鉴。

The#20 and#21 dam sections of JC Hydropower Station,which are reconstructed from diversion open channels,are constructed in the low temperature season in winter.Due to the great impact of the external climate environment,it is difficult to control temperature and prevent cracking.It is necessary to optimize the dam concrete insulation scheme to ensure the crack prevention safety of dam concrete and ensure the overall construction quality of concrete.Based on the engineering practice,this paper introduces the research on the rapid insulation construction scheme in winter,which provides reference for the application in subsequent similar projects.