正混凝土在路面工程中的应用研究

doi:10.16552/j.cnki.issn1001-1625.2024.0981

硅酸盐通报 ›› 2025, Vol. 44 ›› Issue (2): 756-764.DOI: 10.16552/j.cnki.issn1001-1625.2024.0981

正混凝土在路面工程中的应用研究

黄志军^1,2, 余震^1,2, 孙志军³, 谭宗林³, 龙晨杰³, 许伟⁴, 沈卫国^1,2, 王桂明^1,2

1.武汉理工大学材料科学与工程学院,武汉 430070;
2.武汉理工大学硅酸盐建筑材料国家重点实验室,武汉 430070;
3.广西南天高速公路有限公司,河池 547200;
4.保利长大工程有限公司,广州 510620

收稿日期:2024-08-23 修订日期:2024-10-18 出版日期:2025-02-15 发布日期:2025-02-28
通信作者: 沈卫国,博士,研究员。E-mail:shenwg@whut.edu.cn
作者简介:黄志军(2000—),男,硕士研究生。主要从事混凝土方面的研究。E-mail:15079697673@163.com
基金资助:
保利长大工程有限公司科技项目(202401hx0141)

Application of Orthoconcrete in Pavement Engineering

HUANG Zhijun^1,2, YU Zhen^1,2, SUN Zhijun³, TAN Zonglin³, LONG Chenjie³, XU Wei⁴, SHEN Weiguo^1,2, WANG Guiming^1,2

1. College of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China;
2. State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China;
3. Guangxi Nantian Expressway Co., Ltd., Hechi 547200, China;
4. Poly Changda Engineering Co., Ltd., Guangzhou 510620, China

Received:2024-08-23 Revised:2024-10-18 Published:2025-02-15 Online:2025-02-28

摘要/Abstract

摘要： 为了改变路面工程中混凝土浆体大量富余、骨料沉降分布不均匀的问题,采用抛填骨料工艺将C25流态混凝土转变为正混凝土,研究粗骨料抛填率对正混凝土力学性能、干燥收缩和抗渗性能的影响,并通过调节减水剂掺量改变粗骨料最佳抛填率,最后对正混凝土的界面过渡区和孔结构进行分析。结果表明,抛填骨料工艺可以优化正混凝土中的骨料分布,增大抛填率可使正混凝土内部粗骨料分布均匀,并改善界面过渡区微观结构,减小平均孔径,降低孔隙率。在减水剂原有掺量上增加10个百分点,可使粗骨料的最佳抛填率增大5个百分点;粗骨料抛填率的范围在0%~25%时,正混凝土的强度随着抛填率的增大呈先升高后降低的趋势。

关键词: 正混凝土, 抛填骨料, 服役性能, 界面过渡区, 孔结构, 路面工程

Abstract: In order to change the problems of a large amount of surplus concrete slurry and uneven distribution of aggregate settlement in pavement engineering, the C25 fluid concrete was transformed into orthoconcrete by using the distributing-filling aggregate process. The influence of coarse aggregate distributing-filling ratio on the mechanical properties, drying shrinkage and impermeability of orthoconcrete was studied, and the optimum distributing-filling ratio of coarse aggregate was changed by adjusting the dosage of water reducing agent. The interfacial transition zone and pore structure of orthoconcrete were analyzed. The results show that the aggregate distribution in orthoconcrete can be optimized by the distributing-filling aggregate process. Increasing the distributing-filling ratio can make the distribution of coarse aggregate in orthoconcrete uniform, improve the microstructure of interfacial transition zone, reduce the average pore size and porosity. The optimum distributing-filling ratio of coarse aggregate can be increased by 5 percent point when the original dosage of water reducing agent is increased by 10 percent point. In the range of 0%~25% coarse aggregate distributing-filling ratio, the strength of orthoconcrete increases first and then decreases with the increase of distributing-filling ratio.

Key words: orthoconcrete, distributing-filling aggregate, service performance, interfacial transition zone, pore structure, pavement engineering

中图分类号:

TU528

黄志军, 余震, 孙志军, 谭宗林, 龙晨杰, 许伟, 沈卫国, 王桂明. 正混凝土在路面工程中的应用研究[J]. 硅酸盐通报, 2025, 44(2): 756-764.

HUANG Zhijun, YU Zhen, SUN Zhijun, TAN Zonglin, LONG Chenjie, XU Wei, SHEN Weiguo, WANG Guiming. Application of Orthoconcrete in Pavement Engineering[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2025, 44(2): 756-764.

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正混凝土在路面工程中的应用研究

Application of Orthoconcrete in Pavement Engineering

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