Comparison of the properties between high-volume fly ash concrete and high-volume steel slag concrete under temperature matching curing condition
Comparison of the properties between high-volume fly ash concrete and high-volume steel slag concrete under temperature matching curing condition
复制标题
温度匹配养护条件下大掺量粉煤灰混凝土与大掺量钢渣混凝土性能对比
DOI：
10.1016/j.conbuildmat.2015.08.134
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发表时间：
2015-11-15
影响因子：
7.4
通讯作者：
Zhou Zhikai
中科院分区：
文献类型：
--
作者：
Shi Mengxiao;Wang Qiang;Zhou Zhikai
大体积混凝土结构由于早期温度升高而具有较高的开裂风险。大掺量矿物掺合料混凝土水化热低，适用于大体积混凝土结构。比较了大掺量粉煤灰（HVFA）混凝土和大掺量钢渣（HVSS）混凝土在两种不同养护条件（标准养护条件和温度匹配养护条件）下的性能。结果表明，温度匹配养护对HVFA混凝土早期强度的促进作用比HVSS混凝土明显。温度匹配养护对HVSS混凝土的后期强度和弹性模量有负面影响。温度匹配养护对弹性模量发展的促进作用不如对强度发展的促进作用明显。温度匹配养护能显著降低HVFA混凝土的氯离子渗透性，但对HVSS混凝土的氯离子渗透性影响不明显。尽管HVSS混凝土的绝热温升低于HVFA混凝土，有利于其在大体积混凝土结构中的应用，但其强度尤其是劈裂抗拉强度和抗氯离子渗透能力仍有待提高。(C)2015爱思唯尔有限公司版权所有。
Massive concrete structures tend to have high cracking risk due to early temperature rise. High-volume mineral admixture concrete, which has low hydration heat, is suitable for massive concrete structures. In this paper, the properties of high-volume fly ash (HVFA) concrete and high-volume steel slag (HVSS) concrete were compared under two different curing conditions (standard curing condition and temperature match curing condition). The results show that the promoting effect of temperature match curing on the early strength of HVFA concrete is more obvious than that on HVSS concrete. Temperature match curing has negative effect on the late strength and elastic modulus of HVSS concrete. The promotion of temperature match curing to the elastic modulus development is not so obvious as that to the strength development. Temperature match curing can significantly decrease the chloride permeability of HVFA concrete, but its influence on the chloride permeability of HVSS concrete is inconspicuous. Though the adiabatic temperature rise of HVSS concrete is lower than that of HVFA concrete, which is beneficial to its application to the massive concrete structures, its strength especially the splitting tensile strength and resistance to chloride ion penetration need to be improved. (C) 2015 Elsevier Ltd. All rights reserved.