掺蔗糖-柠檬酸复合缓凝剂混凝土性能的研究_《混凝土与水泥制品》杂志社

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发布时间：2020-01-06 00:00:00

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掺蔗糖-柠檬酸复合缓凝剂混凝土性能的研究

Study on the performance of concrete mixed with sucrose-citric acid composite retarder

2023年第12期

复合缓凝剂；混凝土；正交试验；坍落度；终凝时间；抗压强度

Composite retarder; Concrete; Orthogonal test; Slump; Final setting time; Compressive strength

2023年第12期

10.19761/j.1000-4637.2023.12.008.04

孟龙1，袁文华1，2，纪连杰1，方敏1，张祥驰1

1.安徽理工大学土木建筑学院，安徽淮南 232001；2.安徽理工大学矿山地下工程教育部工程研究中心，安徽淮南 232001

孟龙1，袁文华1，2，纪连杰1，方敏1，张祥驰1

孟龙,袁文华,纪连杰,等.掺蔗糖-柠檬酸复合缓凝剂混凝土性能的研究[J].混凝土与水泥制品,2023(12):8-10,16.

MENG Long, YUAN Wenhua, JI Lianjie,et al.Study on the performance of concrete mixed with sucrose-citric acid composite retarder[J].China Concrete and Cement Products,2023(12):8-10,16.

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摘要：将蔗糖和柠檬酸按质量比1∶5配制成复合缓凝剂，通过L9（34）正交试验，研究了水胶比（0.30、033、0.36）、砂率（31%、35%、39%）、粉煤灰掺量（10%、20%、30%）、复合缓凝剂掺量（0.15%、0.20%、0.25%）对混凝土坍落度、终凝时间及抗压强度的影响。结果表明：随着水胶比的增大，混凝土的坍落度先增大后减小，终凝时间延长，抗压强度降低；砂率对混凝土坍落度和终凝时间的影响较小，但对混凝土抗压强度的影响较大；粉煤灰掺量对混凝土坍落度、终凝时间和抗压强度的影响均较小；随着复合缓凝剂掺量的增加，混凝土的坍落度增大，终凝时间延长，抗压强度变化较小；实际应用时，可根据工程要求选择合适的水胶比、砂率、粉煤灰掺量和复合缓凝剂掺量。 Abstract: The composite retarder was prepared by mixing sucrose and citric acid in the mass ratio of 1∶5, and the effects of water cement ratio (0.30, 033, 0.36), sand ratio (31%, 35%, 39%), fly ash content (10%, 20%, 30%), and composite retarder content (0.15%, 0.20%, 0.25%) on the slump, final setting time and compressive strength of concrete were investigated by the L9(34) orthogonal test. The results show that with the increase of water cement ratio, the slump of concrete first increases and then decreases, the final setting time is prolonged, and the compressive strength decreases. The sand ratio has a smaller effect on the slump and final setting time of concrete, but has a larger effect on the compressive strength of concrete. The effect of fly ash content on the slump, final setting time and compressive strength of concrete is relatively small. With the increase of composite retarder content, the slump of concrete increases, the final setting time prolongs, and the changes in compressive strength are relatively small. When applied in practice, the suitable water cement ratio, sand ratio, fly ash content and composite retarder content can be selected according to the requirements of the project.

英文名 : Study on the performance of concrete mixed with sucrose-citric acid composite retarder

刊期 : 2023年第12期

关键词 : 复合缓凝剂；混凝土；正交试验；坍落度；终凝时间；抗压强度

Key words : Composite retarder; Concrete; Orthogonal test; Slump; Final setting time; Compressive strength

刊期 : 2023年第12期

DOI : 10.19761/j.1000-4637.2023.12.008.04

文章编号 :

基金项目 :

作者 : 孟龙1，袁文华1，2，纪连杰1，方敏1，张祥驰1

单位 : 1.安徽理工大学土木建筑学院，安徽淮南 232001；2.安徽理工大学矿山地下工程教育部工程研究中心，安徽淮南 232001

孟龙1，袁文华1，2，纪连杰1，方敏1，张祥驰1

孟龙,袁文华,纪连杰,等.掺蔗糖-柠檬酸复合缓凝剂混凝土性能的研究[J].混凝土与水泥制品,2023(12):8-10,16.

MENG Long, YUAN Wenhua, JI Lianjie,et al.Study on the performance of concrete mixed with sucrose-citric acid composite retarder[J].China Concrete and Cement Products,2023(12):8-10,16.

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摘要

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结论

参考文献

引用本文

Abstract: The composite retarder was prepared by mixing sucrose and citric acid in the mass ratio of 1∶5, and the effects of water cement ratio (0.30, 033, 0.36), sand ratio (31%, 35%, 39%), fly ash content (10%, 20%, 30%), and composite retarder content (0.15%, 0.20%, 0.25%) on the slump, final setting time and compressive strength of concrete were investigated by the L9(34) orthogonal test. The results show that with the increase of water cement ratio, the slump of concrete first increases and then decreases, the final setting time is prolonged, and the compressive strength decreases. The sand ratio has a smaller effect on the slump and final setting time of concrete, but has a larger effect on the compressive strength of concrete. The effect of fly ash content on the slump, final setting time and compressive strength of concrete is relatively small. With the increase of composite retarder content, the slump of concrete increases, the final setting time prolongs, and the changes in compressive strength are relatively small. When applied in practice, the suitable water cement ratio, sand ratio, fly ash content and composite retarder content can be selected according to the requirements of the project.

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掺蔗糖-柠檬酸复合缓凝剂混凝土性能的研究

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