不同温度下水泥、粉煤灰再生微粉体系反应程度与抗压强度关系

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发布时间：2020-01-06 00:00:00

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不同温度下水泥、粉煤灰再生微粉体系反应程度与抗压强度关系

Relationship Between Reaction Degree and Compressive Strength for Cement and Fly Ash Regeneration Powder System under Different

２０17年第3期

水化程度；水泥；粉煤灰；动力学

Hydration degrees; Cement; Fly ash; Kinetics

２０17年第3期

1000-4637（2017）03-09-06

国家自然科学基金（51403182）；云南省教育厅科学研究基金（2012TC）

李琴1，张春红2，陈秋玲3，孙可伟4

1.云南开放大学化学工程学院，昆明650223；2.云南大学生态学与环境学院，昆明 650091；3.昆明理工大学环境科学与工程学院，650500；4.昆明理工大学固体废弃物国家工程研究中心，650093

李琴1，张春红2，陈秋玲3，孙可伟4

李琴,张春红,陈秋玲,等.不同温度下水泥、粉煤灰再生微粉体系反应程度与抗压强度关系[J].混凝土与水泥制品,2017(3):9-14.

LI Q, ZHANG C H, CHEN Q L,et al.Relationship Between Reaction Degree and Compressive Strength for Cement and Fly Ash Regeneration Powder System under Different Temperatures[J].China Concrete and Cement Products,2017(3):9-14.

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摘要：根据共存于体系中水泥、活性物质水化反应中间物Ca(OH)2产生和消耗，研究其水化反应动力学特征，以此为基础计算在不同养护温度、养护时间及体系中粉煤灰量对水泥、活性物质的水化程度大小，并以此配比进行抗压强度试验。研究结果发现当养护温度低于40℃时，体系的水化程度与抗压强度均随着温度升高、龄期延长、粉煤灰量增加而提高；养护温度高于40℃时，体系水化程度随着温度升高，龄期延长而升高，尤其是15%粉煤灰掺量时水泥能够完全水化。高于40℃体系抗压强度随着温度升高而降低，随着龄期延长而增大，高温时体系水化程度和抗压强度变化趋势不同。 Abstract: Cement and active substances hydration reaction kinetics characteristics are researched in the coexisting system by researching their hydration reaction intermediate Ca(OH)2 consumption rate. And the calculation on the hydration degree of cement and fly ash with the dosage of fly ash at different temperature and curing time is carried out. And the experiment ratio of the compressive strength on the recycle mortar is determined. The results shows that when the curing temperature is lower than 40℃, the degree of hydration and compressive strength of the system increases with the temperature, age extension and the fly ash dosage. When the curing temperature is higher than 40℃, the hydration degree increases with the temperature increase and age extension, especially when the fly ash content is 15%, the cement could be completely hydrated. The compressive strength of the system decreases with increasing temperature, when curing temperature is higher than 40℃, the trend of hydration and compressive strength varied with the age extension.

英文名 : Relationship Between Reaction Degree and Compressive Strength for Cement and Fly Ash Regeneration Powder System under Different

刊期 : ２０17年第3期

关键词 : 水化程度；水泥；粉煤灰；动力学

Key words : Hydration degrees; Cement; Fly ash; Kinetics

刊期 : ２０17年第3期

DOI :

文章编号 : 1000-4637（2017）03-09-06

基金项目 : 国家自然科学基金（51403182）；云南省教育厅科学研究基金（2012TC）

作者 : 李琴1，张春红2，陈秋玲3，孙可伟4

单位 : 1.云南开放大学化学工程学院，昆明650223；2.云南大学生态学与环境学院，昆明 650091；3.昆明理工大学环境科学与工程学院，650500；4.昆明理工大学固体废弃物国家工程研究中心，650093

李琴1，张春红2，陈秋玲3，孙可伟4

李琴,张春红,陈秋玲,等.不同温度下水泥、粉煤灰再生微粉体系反应程度与抗压强度关系[J].混凝土与水泥制品,2017(3):9-14.

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摘要

参数

结论

参考文献

引用本文

摘要：根据共存于体系中水泥、活性物质水化反应中间物Ca(OH)₂产生和消耗，研究其水化反应动力学特征，以此为基础计算在不同养护温度、养护时间及体系中粉煤灰量对水泥、活性物质的水化程度大小，并以此配比进行抗压强度试验。研究结果发现当养护温度低于40℃时，体系的水化程度与抗压强度均随着温度升高、龄期延长、粉煤灰量增加而提高；养护温度高于40℃时，体系水化程度随着温度升高，龄期延长而升高，尤其是15%粉煤灰掺量时水泥能够完全水化。高于40℃体系抗压强度随着温度升高而降低，随着龄期延长而增大，高温时体系水化程度和抗压强度变化趋势不同。

Abstract: Cement and active substances hydration reaction kinetics characteristics are researched in the coexisting system by researching their hydration reaction intermediate Ca(OH)₂ consumption rate. And the calculation on the hydration degree of cement and fly ash with the dosage of fly ash at different temperature and curing time is carried out. And the experiment ratio of the compressive strength on the recycle mortar is determined. The results shows that when the curing temperature is lower than 40℃, the degree of hydration and compressive strength of the system increases with the temperature, age extension and the fly ash dosage. When the curing temperature is higher than 40℃, the hydration degree increases with the temperature increase and age extension, especially when the fly ash content is 15%, the cement could be completely hydrated. The compressive strength of the system decreases with increasing temperature, when curing temperature is higher than 40℃, the trend of hydration and compressive strength varied with the age extension.

关键词:

水化程度；水泥；粉煤灰；动力学

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[5] 李琴.基于建筑废弃微粉活性激发制备干混砂浆性能和机理研究[D].昆明:昆明理工大学,2014:44-93.

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[7] 李九苏.基于活性粉末增强的混凝土再生利用技术研究[D].长沙:湖南大学,2009: 82-85.

[8] 董刚.粉煤灰和矿渣在水泥浆体中的反应程度研究[D].北京:中国建筑材料科学研究总院,2008:35-90.

[9] 张云升,孙伟,郑克仁.水泥-粉煤灰浆体的水化反应进程[J].东南大学学报:自然科学版,2006,36(1):118-123.

[10] 冯春花,李东旭.粉煤灰在水泥浆体中的反应程度研究[J].硅酸盐通报,2015(11): 3202-3208.

[11] 李响,阿茹罕,阎培渝.水泥-粉煤灰复合胶凝材料水化程度的研究[J].建筑材料学报,2010,13(5):584-588.

[12] 李琴,张春红,孙可伟.不同激发剂激发建筑垃圾再生微粉活性研究[J].硅酸盐通报,2016(7):2187-2192.

[13] 胡家国.电厂粉煤灰矿山充填胶凝机理研究及水化反应动力学特性[D].长沙:中南大学,2004:49.

[14] Li Qin, Zhou Xiaojun, Sun Kewei. Analysis of te rate constant for hydration kinetics of the cement and ash fly in the solid residues system based on the measurement of Ca(OH)2[J].Applied Machanics and Material,2013:380-384.

[15]WANG X.Y.,Han-Seung Lee,Ki-Bong Park.A multi-phase kinetic model to simulate hydration of slag-cement blends[J].Cement & concrete composites, 2010,32(6):468-477.

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