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

机译：养护温度对高强度膨胀混凝土膨胀与强度配合的影响

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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 ℃), 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 ℃) 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 ℃. But suitable expansion made the microstructure of the concrete denser, which resulted in the highest strength of the concrete at 40 ℃. High curing temperature (60 ℃) 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 ℃.

机译：研究了固化温度对膨胀率与强度之间关系的影响。结果表明，在标准养护条件（20℃）下，高强度膨胀混凝土的膨胀和强度随龄期的增长而一致地增长。但是，在高固化温度下，混凝土的膨胀和强度之间存在冲突。升高的固化温度（40℃）促进了昂贵剂和水泥的水合作用。然而，混凝土快速发展的强度限制了其膨胀，并导致在40℃时混凝土的最低极限膨胀率。但是适当的膨胀使混凝土的微观结构更加致密，从而在40℃时获得了最高的混凝土强度。较高的固化温度（60℃）会在早期水合年龄导致过度膨胀。适当的体积膨胀有利于通过减少大孔并改善混凝土强度来改善硬化浆体的孔结构。但是，过量的体积膨胀对微观结构有害，并导致60℃时混凝土的最低强度。

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《Testing and evaluation of advanced building materials》|2012年|205-210|共6页
会议地点 Shanghai(CN)
作者
Feng Jingjing; Zhou Cuiling; Sun Yong; Wang Xiaoqing;
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作者单位

Shandong agriculture of university, Taian 271000, China;

Shandong agriculture of university, Taian 271000, China;

Shandong agriculture of university, Taian 271000, China;

Shandong agriculture of university, Taian 271000, China;

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原文格式 PDF
正文语种 eng
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关键词
High strength expansive concrete; Temperature; Expansion; Strength;

机译：高强度膨胀混凝土；温度;扩张;强度;

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1. Influence of mix proportions and curing conditions on tensile splitting strength of high strength concretes [J] . K. Kovler, I. Schamban, S. Igarashi Materials and Structures . 1999,第221期

机译：配合比和养护条件对高强度混凝土拉伸劈裂强度的影响
2. Influence of Multiple Methods and Curing Temperatures on the Concrete Compressive Strength [J] . Araldi P., Balestra C. E. T., Savaris G Journal of Engineering, Project, and Production Management . 2019,第2期

机译：多种方法和养护温度对混凝土抗压强度的影响
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

机译：粉煤灰和早期养护温度对高性能混凝土耐久性和强度的影响
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

机译：研究了高温暴露后各种混凝土高温曝光机械性能各种混凝土的机械性能。考虑到高层建筑中垂直元件的抗压强度要求，测试了35,80,100和150MPa各种设计强度的混凝土试样。特别是，在这项研究中，掺入钢纤维对耐火性的影响。实验结果表明，耐火性取决于设计强度和钢纤维含量。在暴露于100-400°C的温度时，80-100MPa的设计强度为35MPa或高性能混凝土（HPC）的正常强度混凝土（NSC）不会击落。然而，当HPC含有1体积的钢纤维的百分比时，爆炸性剥落发生在300℃。超高性能混凝土（UHPC）的设计强度为150 MPa和1.5 Vol。钢纤维的百分比也显示出300℃的剧烈剥落。本研究中发现的实验结果可以有助于更好地了解在火灾中的HPC和UHPC的行为以及钢纤维对耐火性的作用。
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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