超细粉煤灰对低水胶比复合胶凝材料浆体流动性的影响

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发布时间：2020-01-06 00:00:00

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超细粉煤灰对低水胶比复合胶凝材料浆体流动性的影响

The effect of superfine fly ash on the fluidity of composite cementitious material paste with low water-binder ratio

2023年第7期

低水胶比浆体；超细粉煤灰；工作性；流变性能；影响因素

Paste with low water-binder ratio; Superfine fly ash; Workability; Rheological property; Influencing factor

2023年第7期

10.19761/j.1000-4637.2023.07.001.06

国家自然科学基金项目（51878381）。

阎培渝1，黄静2

1.清华大学土木工程系，北京 100084；2.厦门路桥工程设计院有限公司，福建厦门 361006

阎培渝1，黄静2

阎培渝,黄静.超细粉煤灰对低水胶比复合胶凝材料浆体流动性的影响[J].混凝土与水泥制品,2023(7):1-6.

YAN P Y,HUANG J.The effect of superfine fly ash on the fluidity of composite cementitious material paste with low water-binder ratio[J].China Concrete and Cement Products,2023(7):1-6.

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摘要：研究了超细粉煤灰掺量对低水胶比复合胶凝材料浆体流动性的影响，分析了浆体流动性与流变性能的关系。结果表明：在相同水胶比和硅灰掺量下，随着超细粉煤灰掺量的增加，浆体流动度增大，流动时长先缩短后延长，平均流动速率先提高后下降，浆体的黏度系数减小，屈服应力增大，剪切增稠性增强；在相同超细粉煤灰掺量下，浆体的流动度-黏度系数和流动度-屈服应力均呈负相关，黏度系数或屈服应力减小，浆体的流动度增大；在相同流动度下，当超细粉煤灰掺量较高时，浆体的黏度系数减小，屈服应力增大；浆体的流动度同时受其黏度和变形能力的影响。 Abstract: The influence of superfine fly ash content on the fluidity of low water-binder ratio composite cementitious material pastes was studied. The relationship between fluidity and rheological properties of pastes was analyzed. The results show that at the same water-binder ratio and content of silica fume, the flow spread of pastes increases, and flowing time of pastes shortens first and then lengthens, and average flowing rate of pastes increases first and then decreases with the increase of substituted rate of cement by superfine fly ash, and the viscosity coefficient of pastes decreases while their yield stress remains increasing. At the same content of superfine fly ash, both the relationships of flow spread and viscosity coefficient as well as yield stress of pastes are negative, and viscosity coefficient or yield stress decreases, and the fluidity of pastes increases. At the same fluidity, when the content of superfine fly ash is high, the viscosity coefficient of the pastes decreases and the yield stress increases. The fluidity of pastes is affected by both its viscosity and deformation capacity.

英文名 : The effect of superfine fly ash on the fluidity of composite cementitious material paste with low water-binder ratio

刊期 : 2023年第7期

关键词 : 低水胶比浆体；超细粉煤灰；工作性；流变性能；影响因素

Key words : Paste with low water-binder ratio; Superfine fly ash; Workability; Rheological property; Influencing factor

刊期 : 2023年第7期

DOI : 10.19761/j.1000-4637.2023.07.001.06

文章编号 :

基金项目 : 国家自然科学基金项目（51878381）。

作者 : 阎培渝1，黄静2

单位 : 1.清华大学土木工程系，北京 100084；2.厦门路桥工程设计院有限公司，福建厦门 361006

阎培渝1，黄静2

阎培渝,黄静.超细粉煤灰对低水胶比复合胶凝材料浆体流动性的影响[J].混凝土与水泥制品,2023(7):1-6.

YAN P Y,HUANG J.The effect of superfine fly ash on the fluidity of composite cementitious material paste with low water-binder ratio[J].China Concrete and Cement Products,2023(7):1-6.

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摘要

参数

结论

参考文献

引用本文

Abstract: The influence of superfine fly ash content on the fluidity of low water-binder ratio composite cementitious material pastes was studied. The relationship between fluidity and rheological properties of pastes was analyzed. The results show that at the same water-binder ratio and content of silica fume, the flow spread of pastes increases, and flowing time of pastes shortens first and then lengthens, and average flowing rate of pastes increases first and then decreases with the increase of substituted rate of cement by superfine fly ash, and the viscosity coefficient of pastes decreases while their yield stress remains increasing. At the same content of superfine fly ash, both the relationships of flow spread and viscosity coefficient as well as yield stress of pastes are negative, and viscosity coefficient or yield stress decreases, and the fluidity of pastes increases. At the same fluidity, when the content of superfine fly ash is high, the viscosity coefficient of the pastes decreases and the yield stress increases. The fluidity of pastes is affected by both its viscosity and deformation capacity.

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[1] 陈宝春,季韬,黄卿维,等.超高性能混凝土研究综述[J].建筑科学与工程学报,2014,31(3):1-24.
[2] SHAMMUGASUNDARAM N,PRAVEENKUMAR S.Influence of supplementary cementitious materials, curing conditions and mixing ratios on fresh and mechanical properties of engineered cementitious composites-A review[J].Construction and Building Materials,2021,309:125038.
[3] 刘建忠,孙伟,张倩倩,等.低水胶比复合水泥基材料的流变特性[J].混凝土与水泥制品,2014(1):1-4.
[4] 王晖.超高性能混凝土(UHPC)研究综述[J].混凝土与水泥制品,2022(4):25-28.
[5] 刘宇,黎梦圆,阎培渝.矿物掺合料对胶凝材料浆体流变性能和触变性的影响[J].硅酸盐学报,2019,47(5):594-601.
[6] 王冠,李炜,葛文杰,等.不同因素对超高性能混凝土工作性及力学性能的影响[J].混凝土与水泥制品,2021(12):50-54.
[7] LASKAR A I,TALUKDAR S.Rheological behavior of high performance concrete with mineral admixtures and their blending[J].Construction and Building Materials,2008,22(12):2345-2354.
[8] KHAYAT K H,MENG W,VALLURUPALLI K,et al.Rheological properties of ultra-high-performance concrete-An overview[J].Cement and Concrete Research,2019,124:105828.
[9] 苏彩丽,邢晓飞,张承志.粉煤灰砂浆流变参数的试验研究及机理分析[J].混凝土与水泥制品,2018(6):30-34.
[10] 黎梦圆.新拌水泥基材料非线性流变模型的研究与应用[D].北京:清华大学,2018.
[11] 肖翔天.新拌水泥混凝土流变特性模型综述[J].四川水泥,2018,260(4):14.
[12] TREGGER N,FERRARA L.Identifying viscosity of cement paste from mini-slump-flow test[J].ACI Materials Journal,2008,105(6):556-558.
[13] MENG W,KHAYAT K H.Improving flexural performance of ultra-high-performance concrete by rheology control of suspending mortar[J].Composites Part B Engineering,2017,117(11):26-34.
[14] 杭美艳,孙忠科,郭艳梅.粉煤灰对UHPC性能及微观结构的影响[J].混凝土与水泥制品,2020(12):11-14.
[15] 徐海源,沙建芳,刘建忠,等.粉煤灰对水泥基材料流动性能影响及评价方法研究[J].混凝土与水泥制品,2014(12):5-8.
[16] 曹润倬,周茗如,周群,等.超细粉煤灰对超高性能混凝土流变性、力学性能及微观结构的影响[J].材料导报,2019,33(16):2684-2689.
[17] 黄静,季文玉,阎培渝.新拌UHPC浆体的工作性与流变性正交试验研究[J].混凝土与水泥制品,2022(1):1-6.
[18] 黄静,季文玉,阎培渝.UHPC浆体的工作性和流变性与颗粒膜层厚度的关系[J].硅酸盐通报,2022,41(3):766-776.
[19] 黎梦圆,刘宇,韩建国,等.采用Couette逆问题的解计算水泥基材料流变参数[J].硅酸盐学报,2020,48(8):1302-1309.
[20] LI M,HAN J,ZHOU Y,et al.A rheological model for evaluating the behavior of shear thickening of highly flowable mortar[J].Molecules,2021:26(4):1011-1030.

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超细粉煤灰对低水胶比复合胶凝材料浆体流动性的影响

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