混凝土黏聚性对预制箱梁外观质量的影响研究

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发布时间：2020-01-06 00:00:00

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混凝土黏聚性对预制箱梁外观质量的影响研究

Study on the Effect of Concrete Cohesiveness on the Appearance Quality of Precast Box Girder

2023年第2期

预制箱梁；新拌混凝土；黏聚性；定量分析；外观质量

Precast box girder; Fresh concrete; Cohesiveness; Quantitative analysis; Appearance quality

2023年第2期

10.19761/j.1000-4637.2023.02.038.05

刁锡刚1，刘洋1，徐林1，朱云升2，肖钰臻2

1.四川省交通建设集团有限责任公司，四川成都 610047；2.武汉理工大学交通与物流工程学院，湖北武汉 430063

刁锡刚1，刘洋1，徐林1，朱云升2，肖钰臻2

刁锡刚,刘洋,徐林,等.混凝土黏聚性对预制箱梁外观质量的影响研究[J].混凝土与水泥制品,2023(2):38-41,45.

DIAO X G,LIU Y,XU L,et al.Study on the Effect of Concrete Cohesiveness on the Appearance Quality of Precast Box Girder[J].China Concrete and Cement Products,2023(2):38-41,45.

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1000

摘要：为研究混凝土拌合物黏聚性的影响因素，采用定量分析方法对不同配合比混凝土进行了黏聚性评价，通过测定各组混凝土的黏聚性指数研究发现：当C50预制箱梁混凝土水胶比为0.32、砂率为38%、粉煤灰掺量为16%、外加剂掺量为1.1%时，其黏聚性最佳，黏聚性指数达到77.9，较基准组提高了18.4%。工程应用表明，优化后的混凝土配合比可有效改善由于黏聚性差导致的预制箱梁外观质量问题。 Abstract： In order to study the factors affecting the cohesiveness of concrete mixture, the quantitative analysis method was used to evaluate the cohesiveness and workability of concrete with different mix proportions. By measuring the cohesiveness index of each group of concrete, it is found that when the parameters of water-binder ratio, sand ratio, fly ash content and admixture content of the C50 concrete of the precast box girder are respectively adjusted to 0.32, 38%, 16% and 1.1%, the cohesiveness of fresh concrete is the best, and the cohesiveness index reaches 77.9, which is 18.4% higher than that of the basic group. The engineering application shows that the optimized concrete mix proportion can obtain better cohesiveness and workability, which can effectively reduce the appearance quality problems of the precast box girder caused by poor cohesiveness.

英文名 : Study on the Effect of Concrete Cohesiveness on the Appearance Quality of Precast Box Girder

刊期 : 2023年第2期

关键词 : 预制箱梁；新拌混凝土；黏聚性；定量分析；外观质量

Key words : Precast box girder; Fresh concrete; Cohesiveness; Quantitative analysis; Appearance quality

刊期 : 2023年第2期

DOI : 10.19761/j.1000-4637.2023.02.038.05

文章编号 :

基金项目 :

作者 : 刁锡刚1，刘洋1，徐林1，朱云升2，肖钰臻2

单位 : 1.四川省交通建设集团有限责任公司，四川成都 610047；2.武汉理工大学交通与物流工程学院，湖北武汉 430063

刁锡刚1，刘洋1，徐林1，朱云升2，肖钰臻2

刁锡刚,刘洋,徐林,等.混凝土黏聚性对预制箱梁外观质量的影响研究[J].混凝土与水泥制品,2023(2):38-41,45.

DIAO X G,LIU Y,XU L,et al.Study on the Effect of Concrete Cohesiveness on the Appearance Quality of Precast Box Girder[J].China Concrete and Cement Products,2023(2):38-41,45.

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摘要

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结论

参考文献

引用本文

Abstract： In order to study the factors affecting the cohesiveness of concrete mixture, the quantitative analysis method was used to evaluate the cohesiveness and workability of concrete with different mix proportions. By measuring the cohesiveness index of each group of concrete, it is found that when the parameters of water-binder ratio, sand ratio, fly ash content and admixture content of the C50 concrete of the precast box girder are respectively adjusted to 0.32, 38%, 16% and 1.1%, the cohesiveness of fresh concrete is the best, and the cohesiveness index reaches 77.9, which is 18.4% higher than that of the basic group. The engineering application shows that the optimized concrete mix proportion can obtain better cohesiveness and workability, which can effectively reduce the appearance quality problems of the precast box girder caused by poor cohesiveness.

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混凝土黏聚性对预制箱梁外观质量的影响研究

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