混凝土配合比优化及抗冻性能研究

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关键词：C40混凝土配合比；响应曲面法；冻融循环；Weibull模型

中图分类号：U444 文献标志码：A 文章编号：1005-8249（2026）02-0001-07

DOI：10.19860/j.cnki.issn1005-8249.2026.02.001

Research on the Optimization of Concrete Mix Ratio and Frost Resistance of Prefabricated Box Culvert

LI Junjie'，ZHANG Chen²，ZHONG Xiaoling²，DONG Shibo² （1. Xinjiang Road and Bridge Engineering Construction Co.，Ltd.， Urumqi 830021，China；2.Collge of Transportation and Logistics Engineering， Xinjiang Agricultural University， Urumqi 83O052， China） Abstract：Inorder tooptimizetheC4Oboxculvertconcrete.the influenceofwater-glueratio，externaladmixturecontentand flyash contentonthecompressivestrengthandflexural strength ofconcretewasstudied through singlefactortest，andthenthe responsesurface modelwas established basedonthe Box-Benhnken responsesurface methodtoobtain theoptimal mixratio and verify its utility in practical engineering.Based on the model， the optimal mix ratio is 0.38， 24% and 1.46% respectively， and the water- cement ratio is 0.37， 25% and 1.5% respectively. Based on the Maximization of concrete mix ratio，the concreteperformanceimprovementeffctisobvious.TheWeibullmodelwasused toanalyzetheresultsofreeze-thawcycleson concrete samplesandtoestimateitsfreeze-thaw life，which isrelevant inpractical engineringfortheuseofC40concretein plateau and windy areas.

Key words： C4O concrete mix ratio； response surface method； freeze-thaw cycles；Weibull model

材料科学

0 引言

高寒、高海拔地区平均气温低，早晚温差大，影响水泥水化进程，导致混凝土强度发展缓慢，更容易产生内部缺陷1；进而对高原环境下混凝土的使用寿命和长期安全性产生不良影响[2]。（剩余7771字）