A combination of liquid-crystal display glass powder and slag in alkali-activated material

被引：5

作者：

You, Ilhwan ^{[1
]}

Yoo, Doo-Yeol ^{[2
]}

Lee, Seung-Jung ^{[3
]}

Lee, Yujin ^{[4
]}

Zi, Goangseup ^{[4
]}

机构：

[1] Jeonbuk Natl Univ, Dept Rural Construct Engn, 567 Baekje Daero, Jeonju Si 54896, Jeonrabug Do, South Korea

[2] Yonsei Univ, Dept Architecture & Architectural Engn, 50 Yonsei Ro, Seoul 03722, South Korea

[3] Incheon Natl Univ, Dept Civil & Environm Engn, 119 Acad Ro, Incheon 22012, South Korea

[4] Korea Univ, Sch Civil Environm & Architectural Engn, 145 Anam Ro, Seoul 02841, South Korea

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2023年 / 369卷

基金：

新加坡国家研究基金会;

关键词：

Alkali-activated materials; Blast furnace slag; Liquid-crystal display glass powder; Waste glass; Degree of reaction; BLAST-FURNACE SLAG; LCD WASTE GLASS; ORE PROCESSING RESIDUE; FLY-ASH; MICROSTRUCTURAL DEVELOPMENT; GEOPOLYMER CONCRETE; PORTLAND CEMENTS; PHASE EVOLUTION; EARLY-STAGE; HYDRATION;

D O I：

10.1016/j.conbuildmat.2023.130527

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This study presents the feasibility of a combination of liquid-crystal display glass powder (LCDGP) and slag in alkali-activated materials using several techniques including nuclear magnetic resonance and thermodynamic modeling. Slag was replaced with LCDGP at a weight ratio of 25%, 50%, 75%, and 100%. Replacing slag with LCDGP up to 50% resulted in no strength loss and no significant changes in phase assemblages compared to alkali-activated slag. The incorporation of 25% LCDGP improved the pore structure and the reactivity of both precursors which result in increased compressive strength. This was because aluminum of LCDGP incorporated into the silicate which polymerized more C-(N)-A-S-H gel. However, the excessive use of LCDGP (more than 50%) caused a significant strength loss. Since LCDGP was responsible for lowering the pore solution's pH, its excessive use reduced the reactivity of precursors and caused a significant strength loss. This study suggests a guideline for using LCDGP to improve the mechanical property of alkali-activated slag.

引用

页数：13

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