C60流态混凝土的工作性及强度影响因素试验研究

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发布时间：2020-01-06 00:00:00

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C60流态混凝土的工作性及强度影响因素试验研究

Experimental study of factors affecting the workability and strength of C60 fluidized concrete

2024年第9期

流态混凝土；减水剂；骨胶比；骨料级配；工作性；强度

Fluidized concrete; Polycarboxylate superplasticizer; Aggregatebinder ratio; Aggregate gradation; Workability; Strength

2024年第9期

10.19761/j.1000-4637.2024.09.042.06

方敏1，袁文华1，2，张祥驰1，孙克龙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

方敏1，袁文华1，2，张祥驰1，孙克龙1

方敏,袁文华,张祥驰,等.C60流态混凝土的工作性及强度影响因素试验研究[J].混凝土与水泥制品,2024(9):42-47.

FANG M,YUAN W H,ZHANG X C,et al.Experimental study of factors affecting the workability and strength of C60 fluidized concrete[J].China Concrete and Cement Products,2024(9):42-47.

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1000

摘要：采用单因素法研究了粒径为5~10 mm和10~20 mm粗骨料级配（比例5∶5、6∶4、7∶3、8∶2）、减水剂掺量（1.3%、1.5%、1.7%、1.9%、2.1%）、骨胶比（2.6、2.9、3.2、3.5、3.8）对C60流态混凝土工作性和抗压强度的影响。结果表明：随着5~10 mm石子比例的增加，混凝土的坍落扩展度、J环扩展度和抗压强度均呈先增加后降低的趋势，T500则先降低后增加；随着减水剂掺量的增加，混凝土的坍落扩展度和J环扩展度逐渐增加，T500逐渐降低，抗压强度呈先增加后降低的趋势；随着骨胶比的增加，混凝土的坍落扩展度、J环扩展度和抗压强度先增加后降低，T500先降低后增加；当粒径为5~10 mm和10~20 mm粗骨料级配比例为7∶3、减水剂掺量为1.7%、骨胶比为2.9时，混凝土的综合性能最佳。 Abstract: The single factor method was used to study the effects of coarse aggregate gradation (ratios of 5∶5, 6∶4, 7∶3, 8∶2) with particle sizes of 5~10 mm and 10~20 mm, polycarboxylate superplasticizer content(1.3%, 1.5%, 1.7%, 1.9%, 2.1%), and aggregate binder ratio(2.6, 2.9, 3.2, 3.5, 3.8) on the workability and compressive strength of C60 fluidized concrete. The results show that as the proportion of 5~10 mm stones increases, the slump expansion, J-ring expansion, and compressive strength of concrete show a trend of first increasing and then decreasing, while T500 first decreases and then increases. With the increase of polycarboxylate superplasticizer content, the slump expansion and J-ring expansion of concrete gradually increase, T500 gradually decreases, and the compressive strength shows a trend of first increasing and then decreasing. As the aggregate binder ratio increases, the slump expansion, J-ring expansion, and compressive strength of concrete first increase and then decrease, and T500 first decreases and then increases. When the gradation ratio of coarse aggregates with particle sizes of 5~10 mm and 10~20 mm is 7∶3, the polycarboxylate superplasticizer content is 1.7%, and the aggregate binder ratio is 2.9, the comprehensive performance of concrete is optimal.

英文名 : Experimental study of factors affecting the workability and strength of C60 fluidized concrete

刊期 : 2024年第9期

关键词 : 流态混凝土；减水剂；骨胶比；骨料级配；工作性；强度

Key words : Fluidized concrete; Polycarboxylate superplasticizer; Aggregatebinder ratio; Aggregate gradation; Workability; Strength

刊期 : 2024年第9期

DOI : 10.19761/j.1000-4637.2024.09.042.06

文章编号 :

基金项目 :

作者 : 方敏1，袁文华1，2，张祥驰1，孙克龙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

方敏1，袁文华1，2，张祥驰1，孙克龙1

方敏,袁文华,张祥驰,等.C60流态混凝土的工作性及强度影响因素试验研究[J].混凝土与水泥制品,2024(9):42-47.

FANG M,YUAN W H,ZHANG X C,et al.Experimental study of factors affecting the workability and strength of C60 fluidized concrete[J].China Concrete and Cement Products,2024(9):42-47.

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摘要

参数

结论

参考文献

引用本文

Abstract: The single factor method was used to study the effects of coarse aggregate gradation (ratios of 5∶5, 6∶4, 7∶3, 8∶2) with particle sizes of 5~10 mm and 10~20 mm, polycarboxylate superplasticizer content(1.3%, 1.5%, 1.7%, 1.9%, 2.1%), and aggregate binder ratio(2.6, 2.9, 3.2, 3.5, 3.8) on the workability and compressive strength of C60 fluidized concrete. The results show that as the proportion of 5~10 mm stones increases, the slump expansion, J-ring expansion, and compressive strength of concrete show a trend of first increasing and then decreasing, while T500 first decreases and then increases. With the increase of polycarboxylate superplasticizer content, the slump expansion and J-ring expansion of concrete gradually increase, T500 gradually decreases, and the compressive strength shows a trend of first increasing and then decreasing. As the aggregate binder ratio increases, the slump expansion, J-ring expansion, and compressive strength of concrete first increase and then decrease, and T500 first decreases and then increases. When the gradation ratio of coarse aggregates with particle sizes of 5~10 mm and 10~20 mm is 7∶3, the polycarboxylate superplasticizer content is 1.7%, and the aggregate binder ratio is 2.9, the comprehensive performance of concrete is optimal.

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C60流态混凝土的工作性及强度影响因素试验研究

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