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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: Influence of Size Grading of Sand on Air Entrainment
Author(s): E. W. Scripture, Jr., F. B. Hornibrook and D. E. Bryant
Publication: Journal Proceedings
Appears on pages(s): 217-228
Keywords: no keywords
Abstract:Field reports indicated difficulty with certain sands in securing the deisred amount of entrained air; this was frequently attributed to the size grading of the sand, particularly to the defincency in the finer fractions. An experimental investigation was undertaken in view of the paucity of published data on this subject. Mixes of sand and water alone, 1:4 and 1:2 mortars, and concrete mixes were made with and without air-entraining agents and the air contents determined. While size grading of the sand had a very large influence on air entrainment in a mixture of sand and water alone, this effect was smaller in mortars and very small in concrete mixes. It was found that maximum air was entrained by the 28-48 mesh size sand rather than the 48-100 mesh size.
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