基于不同试验条件的水工混凝土抗冻性能研究  

Study on Frost Resistance of Hydraulic Concrete based on Different Test Conditions

作　　者：李洋 LI Yang(Beipiao Urban Village Drinking Water Project Construction Management Station,Beipiao 122100,China)

机构地区：[1]北票市农村饮水工程建设管理站,辽宁北票122100

出　　处：《黑龙江水利科技》2022年第12期8-11,共4页Heilongjiang Hydraulic Science and Technology

摘　　要：本研究利用GDJS-800气候模拟系统设定-50℃、-30℃、-15℃、-10℃、-5℃五个降温终了温度,探讨了F50、F150、F300抗冻等级混凝土的动弹性模量和质量损失受冻融温度的影响。结果表明:水工混凝土动弹模量和质量损失均随着冻融过程中降温终了温度的减小而增大,其最大能经受的冻融循环次数也不断下降,降温终了温度越低则混凝土抗冻耐久性越差。In this study,the GDJS-800 climate simulation system was used to set the final cooling temperatures of-50℃,-30℃,-15℃,-10℃and-5℃,and the dynamic elastic modulus and mass loss of F50,F150 and F300 grade concrete were investigated under the influence of freeze-thaw temperature.The results show that the dynamic modulus and mass loss of hydraulic concrete increase with the decrease of the final temperature during freezing and thawing,and the maximum number of freeze-thaw cycles it can withstand also decreases.The lower the final temperature is,the worse the frost resistance of concrete is.

关 键 词：气候模拟 中心温度 冻融循环 抗冻性能 水工混凝土 

分 类 号：TV431[水利工程—水工结构工程]