混凝土配合比优化及抗冻性能研究

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混凝土配合比优化及抗冻性能研究

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

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黎俊杰¹ , 张晨² , 仲小玲² , 董世博²

( 1 . 新疆路桥桥梁工程建设有限责任公司，乌鲁木齐 830021 ;

2. 新疆农业大学交通与物流工程学院，乌鲁木齐 830052)

摘要：为优化 C40 箱涵混凝土，进行单因素试验，研究水胶比、外掺剂含量、粉煤灰含量对混凝土试件抗压、抗折强度的影响程度，基于 Box - Benhnken 响应曲面法建立响应曲面模型，获得最优配合比，并验证其在实际工程中的效用。结果表明：水胶比、外掺剂含量、粉煤灰含量对混凝土性能影响较大，基于模型得到最佳配合比为水胶比 0. 38 、粉煤灰掺量 24% 、减水剂含量 1 . 46% , 实际试验选用水胶比 0. 37 、粉煤灰掺量 25% 、减水剂含量 1 . 5% , 实际试验得到混凝土抗压、抗折强度与模型预测结果误差较小。基于混凝土配合比优化，混凝土性能提升效果明显。采用 Weibull 模型对混凝土试件的冻融循环试验结果进行分析，并预测其冻融寿命，为高原大风地区实际工程中 C40 混凝土的应用提供参考意义。

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 Junjie1 , ZHANG Chen2 , ZHONG Xiaoling2 , DONG Shibo2

( 1 . Xinjiang Road and Bridge Engineering Construction Co . , Ltd . , Urumqi 830021 , China; 2. College of

Transportation and Logistics Engineering , Xinjiang Agricultural University , Urumqi 830052 , China)

Abstract : In order to optimize the C40 box culvert concrete . the influence of water - glue ratio , external admixture content and fly ash content on the compressive strength and flexural strength of concrete was studied through single factor test , and then the response surface model was established based on the Box - Benhnken response surface method to obtain the optimal mix ratio 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 concrete performance improvement effect is obvious . The Weibull model was used to analyze the results of freeze - thaw cycles on concrete samples and to estimate its freeze - thaw life , which is relevant in practical engineering for the use of C40 concrete in plateau and windy areas .

Key words : C40 concrete mix ratio; response surface method; freeze - thaw cycles; Weibull model

项目来源：中央引导地方科技发展资金 (ZYYD2025QY18) 。

作者简介：黎俊杰 (1985—) , 男，本科，高级工程师，研究方向：道路桥梁检测。

通信作者：仲小玲 (1985—) , 女，硕士，副教授，高级工程师，研究方向：道路工程。

收稿日期：2025 - 04 - 24

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