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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: Strength of the Cement Aggregate Bond
Author(s): K. M. Alexander
Publication: Journal Proceedings
Appears on pages(s): 377-390
Abstract:Data from approximately 1000 determinations of port- land cement-aggregate bond strength and portland cement paste strength are presented and analyzed. It is shown that at early a e s lar the strength of th 8 e differences con exist between e bon formed between the same cement and different aggregates. No evidence was found of significant cement-aggregate bond strength differences between different samples of the same rock type. Cement aggregate bond strength decreases with increasing water- cement ratio and alkali content, and increases with in- creasing age. All cement-aggregate bond strengths ob- served here for sawn aggregate surfaces were consid- erably lower than the strength of the adjacent portland cement matrix at 7 and 28 days. On the basis of these data explanations are suggested for some aspects of the process of tensile failure of plain concrete.
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