Simulation of a temperature rise in concrete incorporating fly ash or slag

被引：13

作者：

Wang, Xiao-Yong ^{[1
]}

Lee, Han-Seung ^{[1
]}

机构：

[1] Hanyang Univ, Sch Architecture & Architectural Engn, Ansan 425791, South Korea

来源：

MATERIALS AND STRUCTURES | 2010年 / 43卷 / 06期

关键词：

Concrete; Slag; Fly ash; Heat; Hydration model; Temperature rise; BLAST-FURNACE SLAG; SHORT-TERM HYDRATION; PORTLAND-CEMENT; MINERAL ADMIXTURES; MECHANICAL-PROPERTIES; COMPRESSIVE STRENGTH; SECONDARY COMPONENT; BLENDED CEMENTS; INERT MATERIALS; FILLER CEMENT;

D O I：

10.1617/s11527-009-9525-8

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Granulated slag from metal industries and fly ash from the combustion of coal are among the industrial by-products and have been widely used as mineral admixtures in normal and high strength concrete. Due to the reaction between calcium hydroxide and fly ash or slag, compared with Portland cement, the hydration of concrete containing fly ash or slag is much more complex. In this paper, by considering the producing of calcium hydroxide in cement hydration and the consumption of it in the reaction of mineral admixtures, a numerical model is proposed to simulate the hydration of concrete containing fly ash or slag. The heat evolution rate of fly ash or slag blended concrete is determined from the contribution of both cement hydration and the reaction of mineral admixtures. Furthermore, a temperature rise in blended concrete is evaluated based on the degree of hydration of cement and mineral admixtures. The proposed model is verified with experimental data on the concrete with different water-to-cement ratios and mineral admixtures substitution ratios.

引用

页码：737 / 754

页数：18

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