Title:
Mixture Proportioning and Properties of Self-Consolidating Lightweight Concrete Containing Glass Powder
Author(s):
Caijun Shi and Yanzhong Wu
Publication:
Materials Journal
Volume:
102
Issue:
5
Appears on pages(s):
355-363
Keywords:
durability; lightweight aggregate; mixture proportioning
DOI:
10.14359/14715
Date:
9/1/2005
Abstract:
This paper deals with the design and properties of self-consolidating lightweight concrete. Self-consolidating lightweight concrete is designed using a combination of the least void volume for a binary aggregate mixture, excessive paste theory, and ACI standard practice for selecting proportions for structural lightweight concrete. Glass powders and ASTM Class F fly ash are added to produce excessive paste to increase the flowability and segregation resistance of the concrete. The five designed concrete mixtures exhibit good flowability and segregation resistance. Compared with the fly ash, the use of ground glass powder decreases setting times and increases chloride migration resistance, the strength and drying shrinkage of the concrete. The designed self-consolidating lightweight concretes have good freezing-and-thawing resistance. 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.