A Comparison of ISO and ASTM Tests for Cement Strength

B. Foster; R. Blaine

doi:10.1520/STP48351S

SYMPOSIA PAPER Published: 01 January 1968

STP48351S

A Comparison of ISO and ASTM Tests for Cement Strength

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A comparison of compressive strength tests of six portland cements shows that the proposed ISO procedures gave results from 25 to 95 per cent higher than ASTM C 109, depending upon strength level, test age, and cement fineness. The testing sand is seen as the major problem in developing a truly international standard for cement strength, and it is concluded that the selection of equivalent sands is complicated by the prescribed mechanical compaction, which causes forced bleeding. ISO tests using Ottawa-type, round-grain sands are described.

Author Information

Foster, B., E.

National Bureau of Standards, Washington, D. C.

Blaine, R., L.

National Bureau of Standards, Washington, D. C.

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Details

Developed by Committee: C01

Pages: 33–60

DOI: 10.1520/STP48351S

ISBN-EB: 978-0-8031-6796-4

ISBN-13: 978-0-8031-6642-4

A Comparison of ISO and ASTM Tests for Cement Strength

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