Physicochemical properties of CO2-cured belite-rich cement with electric arc furnace reduction slag as a partial replacement

被引：1

作者：

Noh, Geon ^{[1
]}

Sharma, Gaurav ^{[1
]}

Kim, Hyeju ^{[1
]}

Das, Kunal Krishna ^{[1
]}

Jang, Jeong Gook ^{[1
]}

Park, Jung-Jun ^{[2
]}

Lee, Namkon ^{[2
]}

机构：

[1] Incheon Natl Univ, Urban Sci Inst, Div Architecture & Urban Design, 119 Acad Ro, Incheon 22012, South Korea

[2] Korea Inst Civil Engn & Bldg Technol, Dept Struct Engn Res, 283 Goyangdae Ro, Goyang Si 10223, South Korea

来源：

DEVELOPMENTS IN THE BUILT ENVIRONMENT | 2024年 / 20卷

基金：

新加坡国家研究基金会;

关键词：

Electric arc furnace slag; Belite-rich cement; CO; 2; curing; uptake; Compressive strength; STEEL SLAG; DURABILITY; CONCRETE; BEHAVIOR;

D O I：

10.1016/j.dibe.2024.100564

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This study investigates the physicochemical properties of CO2-cured belite-rich cement with electric arc furnace (EAF) reduction slag as a partial replacement at varying weight percentages (0-20%). The results revealed that water-cured specimens (WRS) showed significant increases in the numbers of gel and medium capillary pores, while carbonation-cured specimens (CRS) demonstrated increases in the numbers of large capillary and macro pores. Moreover, up to 10% replacement of the slag led to a decrease in the compressive strength, accompanied by increased CO2 absorption and reduced alkalinity. When the EAF reduction slag content increased from 15% to 20%, CRS exhibited a trend reversal in the compressive strength, marked by an increase in the pH, approaching compressive strength comparable to those of WRS. This signified that higher percentages of EAF reduction slag are advantageous for enhancing CO2 sequestration due to the potential reactivity of magnesium oxide in EAF reduction slag with CO2.

引用

页数：12