水利工程中的混凝土防裂材料改性及施工应用技术优化

打开文本图片集

中图分类号：TQ178 文献标志码：A 文章编号：1001-5922（2025）10-0106-04

Modification of concrete anti-cracking materials in water conservancy projects and optimization of construction application technology

ZHOU Zhenhui， CAO Jimeng （Ningyang County Water Conservancy Engineering Company，Ningyang 2714Oo，Shandong China）

Abstract：Aiming at the problem of poorlow temperature crack resistance of traditional hydraulic asphalt concrete， amethodof modifying hydraulicconcrete with rubber powder is proposed.Firstly，theratioof rubber powder modified hydraulicconcreteisoptimized，andthenitslowtemperature crackresistanceisanalyzed.Finalysomesuggestionsareput forward foritsconstruction application.Theresults showthat thefracture energyofrubberpowder modified hydraulic concrete at 0‰ is about 2 832 J/m2 when the dosage of rubber powder modified asphalt is 7% and the dosage of fly ash is 12% . When the temperature drops to ，the flexural strength of modified asphalt hydraulic concrete is 3.3 MPa，and the flexural modulus is about 562 MPa.The freezing temperature is -45 C ，and the freezing stress is 4.84MPa ，which meets the requirements of water conservancy project construction in northern cold regions （ <-37∘C ）

Key words：hydraulic concrete;asphalt concrete;low temperature crack resistance;rubber powder modified asphalt;water conservancy project

在水利工程领域，混凝土结构承担着挡水、输水等重要功能。（剩余4849字）