MECHANICAL PROPERTIES OF THE CONCRETE WITH CALCINED ELECTRIC ARC FURNACE OXIDIZING SLAG AS COARSE AGGREGATE AFTER HIGH TEMPERATURE HEATING

被引：0
|
作者：
Ito Y. [1 ]
Yokota H. [1 ]
Yokoi S. [2 ]
机构：
[1] Nagoya Institute of Technology, Japan
[2] TAISEI CORPORATION, Japan
来源：
Journal of Structural and Construction Engineering | 2023年 / 88卷 / 808期
关键词：
Calcination; Compressive strength; Concrete; Cracks; Electric arc furnace oxidizing slag; High temperature heating;
D O I：
10.3130/aijs.88.872
中图分类号：
学科分类号：
摘要：
When electric arc furnace oxidizing slag gravel (EFG) was used as coarse aggregate, cracks were easily formed after high temperature heating. It is assumed that the transformation of wustite to magnetite by heating caused the volumetric expansion of EFG and the concrete specimens developed cracks. It is assumed that concrete with EFG calcined for volume expansion heating at 500℃ decrease crack. The effect of calcined EFG on mechanical properties after high temperature heating was confirmed. Concrete with EFG calcined at 600°C showed a decrease in cracking of the specimens, and at 1000°C, no cracking was observed. © 2023 Architectural Institute of Japan. All rights reserved.
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页码：872 / 879
页数：7
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