The Influence of Curing Temperature on the Coordination of the Expansion and Strength of High Strength Expansive Concrete

机译：固化温度对高强度膨胀混凝土膨胀与强度配制的影响

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The influence of curing temperature on the relationship between the expansion and the strength was studied. The results showed that under the standard curing condition (20 °C), the expansion and strength of the high strength expansive concrete develop unisonously with the prolongation of age. However, under the high curing temperature, there is a conflict between the expansion and strength of the concrete. Elevated curing temperature (40 °C) promotes the hydration of expensive agent and cement. However the quickly developing strength of the concrete limits its expansion, and leads to the lowest restricted expansion rate of the concrete at 40 °C. But suitable expansion made the microstructure of the concrete denser, which resulted in the highest strength of the concrete at 40 °C. High curing temperature (60 °C) leads to excessive expansion at early hydration age. Appropriate volume expansion is benefit to the improvement of pore structure of hardened paste by reducing large pores and to increase the strength of the concrete. However, excessive volume expansion is harmful to the microstructure and leads to the lowest strength of the concrete at 60 °C.

机译：研究了固化温度对膨胀与强度之间关系的影响。结果表明，在标准固化条件（20°C）下，高强度膨胀混凝土的膨胀和强度随着年龄的延长而迅速发展。然而，在高固化温度下，混凝土的膨胀与强度之间存在冲突。固化温度升高（40℃）促进昂贵的试剂和水泥的水合。然而，混凝土的迅速发展强度限制其膨胀，并导致40°C的混凝土的最低限度膨胀率。但是，合适的膨胀使得混凝土密集的微观结构，从而导致混凝土的最高强度在40℃。高固化温度（60℃）导致早期水合时期的过度膨胀。通过减少大孔并提高混凝土的强度，适当的体积膨胀是有益于改善硬化膏的孔隙结构。然而，过度的体积膨胀对微结构有害，并导致混凝土在60℃下的最低强度。

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《National Academic symposium on testing and evaluation of building materials》|2013年||共6页
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Feng Jingjing; Zhou Cuiling; Sun Yong; Wang Xiaoqing;
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中图分类建筑材料;
关键词
High strength expansive concrete; Temperature; Expansion; Strength;

机译：高强度膨胀混凝土;温度;膨胀;力量;

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3. INFLUENCE OF CURING TEMPERATURES ON STRENGTH PROPERTIES AND CRACKING RESISTANCE PERFORMANCE OF CONCRETE [J] . Norio ITO, Hirozo MIHASHI, Toshio FUKASAWA セメント·コンクリ-ト論文集 . 2002,第56期

机译：固化温度对混凝土强度性能和抗裂性能的影响
4. The Influence of Curing Temperature on the Coordination of the Expansion and Strength of High Strength Expansive Concrete [C] . Feng Jingjing, Zhou Cuiling, Sun Yong, National Academic symposium on testing and evaluation of building materials . 2013

机译：固化温度对高强度膨胀混凝土膨胀与强度配制的影响
5. The influence of fly ash and early-age curing temperature on the durability and strength of high-performance concrete [D] . Evans, Christopher Michael 1997

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6. Effects of Accelerators and Retarders in Early Strength Development of Concrete Based on Low-Temperature-Cured Ordinary Portland and Calcium Sulfoaluminate Cement Blends [O] . Taegyu Lee, Jaehyun Lee, Hyeonggil Choi 2020

机译：低温固化普通硅酸盐和硫铝酸钙水泥掺合料中促进剂和缓凝剂对混凝土早期强度发展的影响
7. Mechanical properties of various concrete after high temperature exposure Mechanical property of various types of concrete after high temperature exposure is investigated. Considering compressive strength requirement for a vertical element in high rise building, concrete specimens with various design strengths of 35, 80, 100, and 150 MPa were tested. Particularly, the influence of incorporated steel fiber on fire resistance is of interest in this study. Experimental results show that the fire resistance depends on the design strength and steel fiber content. Normal strength concrete (NSC) of a design strength of 35 MPa or high performance concrete (HPC) of 80-100 MPa does not spall when exposed to 100-400 °C of temperature. However, an explosive spalling occurs at 300 °C when the HPCs contain 1 vol. of steel fiber. Ultra-high performance concrete (UHPC) of a design strength of 150 MPa and 1.5 vol. of steel fiber also shows dramatic spalling at 300 °C. The experimental results found in this study can contribute to a better understanding of the behaviors of HPC and UHPC under fire and the role of steel fiber on the fire resistance. [O] . 2017

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8. Influence of Curing Conditions on Strength Properties and Maturity Development of Concrete. [R] . Newbolds, S. A., Olek, J. 2001

机译：固化条件对混凝土强度特性及成熟度的影响。

The Influence of Curing Temperature on the Coordination of the Expansion and Strength of High Strength Expansive Concrete

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