机制砂MB值对掺石粉混凝土性能的影响_《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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机制砂MB值对掺石粉混凝土性能的影响

Effect of the MB value of manufactured sand on properties of concrete with stone powder

2024年第5期

机制砂；MB值；石粉掺量；混凝土；工作性；抗压强度

Manufactured sand; MB value; Stone powder content; Concrete; Workability; Compressive strength

2024年第5期

10.19761/j.1000-4637.2024.05.012.05

国家自然科学基金项目（U22B2076、51878480、52078369）；中央高校基本科研业务费专项资金项目；贵州省交通运输厅科技项目（2022-122-024）。

张克永1，李春锦2，黄盛1，汪保印2，任强2，蒋正武2，*

1.贵州桥梁建设集团有限责任公司，贵州贵阳 550001；2.同济大学先进土木工程材料教育部重点实验室材料科学与工程学院，上海 201804

张克永1，李春锦2，黄盛1，汪保印2，任强2，蒋正武2，*

张克永,李春锦,黄盛,等.机制砂MB值对掺石粉混凝土性能的影响[J].混凝土与水泥制品,2024(5):12-16.

ZHANG K Y,LI C J,HUANG S,et al.Effect of the MB value of manufactured sand on properties of concrete with stone powder[J].China Concrete and Cement Products,2024(5):12-16.

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1000

摘要：研究了不同机制砂MB值（0.75、2.75）对掺石粉混凝土的工作性、力学性能的影响。结果表明：机制砂MB值的增加会降低混凝土的工作性；当机制砂MB值较小时，适当的石粉掺量可以在一定程度上改善混凝土的工作性，但机制砂MB值过大对混凝土工作性的负面影响远大于石粉的正面影响；对于纯水泥或单掺粉煤灰组试件，机制砂MB值的增加会降低其抗压强度；而对于掺石粉的试件，机制砂MB值的增加会小幅提高其抗压强度；总体上，机制砂MB值对掺石粉混凝土抗压强度的影响相对较小。 Abstract: The influence of different MB values of manufactured sand (0.75, 2.75) on the workability and mechanical properties of concrete with stone powder was studied. The results indicate that an increase in the MB value of manufactured sand will reduce the workability of concrete. When the MB value of manufactured sand is small, an appropriate content of stone powder can improve the workability of concrete to a certain extent, but the negative impact of excessive MB value of manufactured sand on the workability of concrete is much greater than the positive impact of stone powder. For pure cement or single fly ash specimens, an increase in the MB value of the manufactured sand will reduce the compressive strength. For specimens mixed with stone powder, an increase in the MB value of manufactured sand will slightly increase the compressive strength. Overall, the influence of MB value of manufactured sand on the compressive strength of concrete with stone powder is relatively small.

英文名 : Effect of the MB value of manufactured sand on properties of concrete with stone powder

刊期 : 2024年第5期

关键词 : 机制砂；MB值；石粉掺量；混凝土；工作性；抗压强度

Key words : Manufactured sand; MB value; Stone powder content; Concrete; Workability; Compressive strength

刊期 : 2024年第5期

DOI : 10.19761/j.1000-4637.2024.05.012.05

文章编号 :

基金项目 : 国家自然科学基金项目（U22B2076、51878480、52078369）；中央高校基本科研业务费专项资金项目；贵州省交通运输厅科技项目（2022-122-024）。

作者 : 张克永1，李春锦2，黄盛1，汪保印2，任强2，蒋正武2，*

单位 : 1.贵州桥梁建设集团有限责任公司，贵州贵阳 550001；2.同济大学先进土木工程材料教育部重点实验室材料科学与工程学院，上海 201804

张克永1，李春锦2，黄盛1，汪保印2，任强2，蒋正武2，*

张克永,李春锦,黄盛,等.机制砂MB值对掺石粉混凝土性能的影响[J].混凝土与水泥制品,2024(5):12-16.

ZHANG K Y,LI C J,HUANG S,et al.Effect of the MB value of manufactured sand on properties of concrete with stone powder[J].China Concrete and Cement Products,2024(5):12-16.

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摘要

参数

结论

参考文献

引用本文

Abstract: The influence of different MB values of manufactured sand (0.75, 2.75) on the workability and mechanical properties of concrete with stone powder was studied. The results indicate that an increase in the MB value of manufactured sand will reduce the workability of concrete. When the MB value of manufactured sand is small, an appropriate content of stone powder can improve the workability of concrete to a certain extent, but the negative impact of excessive MB value of manufactured sand on the workability of concrete is much greater than the positive impact of stone powder. For pure cement or single fly ash specimens, an increase in the MB value of the manufactured sand will reduce the compressive strength. For specimens mixed with stone powder, an increase in the MB value of manufactured sand will slightly increase the compressive strength. Overall, the influence of MB value of manufactured sand on the compressive strength of concrete with stone powder is relatively small.

关键词:

the

机制

manufactured

sand

value

混凝土

stone

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机制砂MB值对掺石粉混凝土性能的影响

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