Effect of Glass Powder on Chloride Ion Transport and Alkali-aggregate Reaction Expansion of Lightweight Aggregate Concrete

• Published in: Journal of Wuhan University of Technology. Materials science edition Vol. 24; no. 2; pp. 312 - 317
• Main Authors: Wang, Zhi, Shi, Caijun, Song, Jianming
• Format: Journal Article
• Language: English
• Published: Heidelberg Wuhan University of Technology 01.04.2009; Springer Nature B.V
• Subjects: Chemistry and Materials Science; Expansion; Glass; Materials Science; Steel industry; 氯离子渗透; 玻璃粉末; 碱集料反应; 碱骨料反应; 轻骨料混凝土; 高炉渣; blast furnace slag; silica fume; lightweight aggregate; fly ash; waste glass powder; alkali-aggregate reaction; chloride permeability
• ISSN: 1000-2413; 1993-0437
• DOI: 10.1007/s11595-009-2312-0

The effects of glass powder on the strength development, chloride permeability and potential alkali-aggregate reaction expansion of lightweight aggregate concrete were investigated. Ground blast furnace slag, coal fly ash and silica fume were used as reference materials. The re- placement of cement with 25% glass powder slightly decreases the strengthes at ？ and 28 d, but shows no effect on 90 d＇s. Silica fume is very effective in improving both the strength and chloride penetration resistance, while ground glass powder is much more effective than blast furnace slag and fly ash in improving chloride penetration resistance of the concrete. When expanded shale or clay is used as coarse aggregate, the concrete containing glass powder does not exhibit deleterious expansion even if alkali-reactive sand is used as fine aggregate of the concrete.