掺合料对胶凝体系早期水化放热和力学特性的影响

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发布时间：2020-01-06 00:00:00

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掺合料对胶凝体系早期水化放热和力学特性的影响

Effects of Mineral Admixtures on Early Hydration Heat and Mechanical Characteristic of Cementitious System

２０17年第1期

掺合料；早期；水化放热

Mineral admixtures; Early age; Hydration heat

２０17年第1期

1000-4637（2017）01-08-04

国家自然科学基金项目（51479125，51479124）；中央级公益性科研院所基本科研业务费专项资金（Y416011）

钱文勋1,2，陈迅捷1,2，韦华1,2，王新1

1.南京水利科学研究院，210029；2.水利部水工新材料工程技术研究中心，南京 210029

钱文勋1,2，陈迅捷1,2，韦华1,2，王新1

钱文勋,陈迅捷,韦华,等.掺合料对胶凝体系早期水化放热和力学特性的影响[J].混凝土与水泥制品,2017(1):8-11.

QIAN W X,CHEN X J,WEI H,et al.Effects of Mineral Admixtures on Early Hydration Heat and Mechanical Characteristic of Cementitious System[J].China Concrete and Cement Products,2017(1):8-11.

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摘要：胶凝材料水化热是水工大体积混凝土的关键热学参数，直接影响水工混凝土的温控设计。本文采用热导式等温量热仪试验研究水泥基胶凝材料体系中各种掺合料对水泥水化放热过程的影响，结合其早期强度发展，探讨不同掺合料对水泥基胶凝材料体系早期放热过程和强度的影响规律，为大体积混凝土中掺合料的应用提供技术支撑。研究结果表明，选用的掺合料方案其早龄期水化放热量与对应的早期抗压强度有较好的线性相关，根据早期强度设计要求和水化热控制需要，优先考虑粉煤灰、矿渣粉单掺或者复掺方案。 Abstract: Hydration heat of cementitious materials is a key thermal parameter of hydraulic mass concrete. The temperature control design of hydraulic concrete is directly decided by it. In this paper, isothermal calorimeter was applied to study the effects of various blending materials on early hydration heat proceeding as well as early development of strength, which provided technical support of the mineral admixture utilization in mass concrete. Results indicated that there was a decent linear correlation between early hydration heat and compressive strength of the selected mineral admixture proportion. While in practical engineering application, considering the demands for early design strength and controlled hydration heat, fly ash, slag or their combined mix were suggested.

英文名 : Effects of Mineral Admixtures on Early Hydration Heat and Mechanical Characteristic of Cementitious System

刊期 : ２０17年第1期

关键词 : 掺合料；早期；水化放热

Key words : Mineral admixtures; Early age; Hydration heat

刊期 : ２０17年第1期

DOI :

文章编号 : 1000-4637（2017）01-08-04

基金项目 : 国家自然科学基金项目（51479125，51479124）；中央级公益性科研院所基本科研业务费专项资金（Y416011）

作者 : 钱文勋1,2，陈迅捷1,2，韦华1,2，王新1

单位 : 1.南京水利科学研究院，210029；2.水利部水工新材料工程技术研究中心，南京 210029

钱文勋1,2，陈迅捷1,2，韦华1,2，王新1

钱文勋,陈迅捷,韦华,等.掺合料对胶凝体系早期水化放热和力学特性的影响[J].混凝土与水泥制品,2017(1):8-11.

QIAN W X,CHEN X J,WEI H,et al.Effects of Mineral Admixtures on Early Hydration Heat and Mechanical Characteristic of Cementitious System[J].China Concrete and Cement Products,2017(1):8-11.

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摘要

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结论

参考文献

引用本文

Abstract: Hydration heat of cementitious materials is a key thermal parameter of hydraulic mass concrete. The temperature control design of hydraulic concrete is directly decided by it. In this paper, isothermal calorimeter was applied to study the effects of various blending materials on early hydration heat proceeding as well as early development of strength, which provided technical support of the mineral admixture utilization in mass concrete. Results indicated that there was a decent linear correlation between early hydration heat and compressive strength of the selected mineral admixture proportion. While in practical engineering application, considering the demands for early design strength and controlled hydration heat, fly ash, slag or their combined mix were suggested.

关键词:

掺合料；早期；水化放热

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湿热循环作用对高性能混凝土强度及抗渗性能影响的试验研究

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低钙粉煤灰粒度对水泥-粉煤灰复合胶凝材料力学性能与水化性能的影响

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掺合料对胶凝体系早期水化放热和力学特性的影响

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