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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Effect of Composition on Performance of Ground Glass Pozzolan
Author(s): Mary U. Christiansen and Benjamin Z. Dymond
Publication: Materials Journal
Appears on pages(s): 89-98
Keywords: beams; composition; compressive strength; cubes; flexural capacity; ground glass; mortars; pozzolan; reinforced concrete
Abstract:Primary factors affecting the performance of ground glass used as a pozzolan in portland cement concrete include chemical composition, particle size distribution, and replacement level. Eighteen different waste glass streams from across the United States were analyzed for composition and ground to a consistent size distribution. The compressive strength of mortar cubes made with 20 and 30% glass replacement by mass was measured over 6 months. The flexural capacity of conventional reinforced concrete beams was measured with 0, 10, 20, and 30% soda-lime glass replacement. Compressive strength variation was observed between the different types of glasses tested; however, only a subtle correlation between elemental chemical composition and compressive strength was detected. Few mixtures containing glass surpassed the control mixture (0% glass) compressive strength, and most mixtures containing 20% glass reached higher compressive strengths than those with 30%. The beams with 30% replacement had similar flexural capacity compared to the control mixture.
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