水泥净浆流动度试验的流体静力学理论分析_《混凝土与水泥制品》杂志社

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水泥净浆流动度试验的流体静力学理论分析

Theoretical Analysis on Hydrostatics of Cement Paste Fluidity Test

２０18年第2期

流动度试验；水泥净浆；屈服应力；流体静力学；表面张力；浸润性；浆体密度

Fluidity test; Cement paste; Yield stress; Hydrostatics; Surface tension; Wettability; Paste density

２０18年第2期

1000-4637（2018）02-01-06

国家重点研发计划项目（2017YFB0310100）；高性能土木工程材料国家重点实验室开放基金课题（(2014CEM001）。

王衍伟1，张倩倩1，冉千平1，刘加平2

1.高性能土木工程材料国家重点实验室，江苏苏博特新材料股份有限公司，南京 211103； 2.东南大学材料科学与工程学院，南京 211189

王衍伟1，张倩倩1，冉千平1，刘加平2

王衍伟,张倩倩,冉千平,等.水泥净浆流动度试验的流体静力学理论分析[J].混凝土与水泥制品,2018(2):1-6.

WANG Y W,ZHANG Q Q,RAN Q P,et al.Theoretical Analysis on Hydrostatics of Cement Paste Fluidity Test[J].China Concrete and Cement Products,2018(2):1-6.

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摘要：从流体力学的角度对水泥净浆流动度试验开展研究，在考虑流体表面张力和表面浸润性的情况下，对流体屈服应力和流动度之间的关系开展了较文献中现有结果更为严格的理论分析，获得了一组新的公式，完善了Roussel等人的理论工作。在此基础上，定量计算了表面张力和浸润性、截锥圆模容积、浆体密度对屈服应力和流动度之间关系的影响。 Abstract: The mini-conical slump flow test, also known as the fluidity test, is one of the most common methods for quality control in characterizing cement pastes and grouts and for a quick evaluation of the performance of chemical admixtures. There have already been many research efforts to relate the final spread of the slumped paste to its yield stress, with maybe the most convincing one being the theoretical work of Roussel et al., where analytical expressions were derived based on hydrostatic considerations, with the influences of surface tension and wettability accounted for by a fitting parameter. Here, a more rigorous theoretical treatment of the effects of surface tension and wettability is repored. A set of equations for the relation between final spread and yield stress, with no physical ambiguous fitting parameters, are derived. The results are compared with those of Roussel et al., and the influences of surface tension and wettability, sample volume, and paste density are studied within this theoretical framework.

英文名 : Theoretical Analysis on Hydrostatics of Cement Paste Fluidity Test

刊期 : ２０18年第2期

关键词 : 流动度试验；水泥净浆；屈服应力；流体静力学；表面张力；浸润性；浆体密度

Key words : Fluidity test; Cement paste; Yield stress; Hydrostatics; Surface tension; Wettability; Paste density

刊期 : ２０18年第2期

DOI :

文章编号 : 1000-4637（2018）02-01-06

基金项目 : 国家重点研发计划项目（2017YFB0310100）；高性能土木工程材料国家重点实验室开放基金课题（(2014CEM001）。

作者 : 王衍伟1，张倩倩1，冉千平1，刘加平2

单位 : 1.高性能土木工程材料国家重点实验室，江苏苏博特新材料股份有限公司，南京 211103； 2.东南大学材料科学与工程学院，南京 211189

王衍伟1，张倩倩1，冉千平1，刘加平2

王衍伟,张倩倩,冉千平,等.水泥净浆流动度试验的流体静力学理论分析[J].混凝土与水泥制品,2018(2):1-6.

WANG Y W,ZHANG Q Q,RAN Q P,et al.Theoretical Analysis on Hydrostatics of Cement Paste Fluidity Test[J].China Concrete and Cement Products,2018(2):1-6.

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摘要

参数

结论

参考文献

引用本文

摘要：从流体力学的角度对水泥净浆流动度试验开展研究，在考虑流体表面张力和表面浸润性的情况下，对流体屈服应力和流动度之间的关系开展了较文献中现有结果更为严格的理论分析，获得了一组新的公式，完善了Roussel等人的理论工作。在此基础上，定量计算了表面张力和浸润性、截锥圆模容积、浆体密度对屈服应力和流动度之间关系的影响。

Abstract: The mini-conical slump flow test, also known as the fluidity test, is one of the most common methods for quality control in characterizing cement pastes and grouts and for a quick evaluation of the performance of chemical admixtures. There have already been many research efforts to relate the final spread of the slumped paste to its yield stress, with maybe the most convincing one being the theoretical work of Roussel et al., where analytical expressions were derived based on hydrostatic considerations, with the influences of surface tension and wettability accounted for by a fitting parameter. Here, a more rigorous theoretical treatment of the effects of surface tension and wettability is repored. A set of equations for the relation between final spread and yield stress, with no physical ambiguous fitting parameters, are derived. The results are compared with those of Roussel et al., and the influences of surface tension and wettability, sample volume, and paste density are studied within this theoretical framework.

关键词:

流动度试验；水泥净浆；屈服应力；流体静力学；表面张力；浸润性；浆体密度

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