Modification of the ACI rectangular stress block for high-strength concrete

Modification of the ACI rectangular stress block for high-strength concrete

Most concrete codes do not explicitly cover concrete with strengths above 50-60 MPa (7000 to 9000 psi). Compression stress blocks from three current codes that do allow design for high-strength concrete (SC) sections are presented. Comparisons of test data from the literature to strengths calculated...

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Veröffentlicht in:ACI structural journal 1997, Vol.94 (1), p.40-48
Hauptverfasser: IBRAHIM, H. H. H, MACGREGOR, J. G
Format: Artikel
Sprache:eng
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Applied sciences
Buildings. Public works
Concretes. Mortars. Grouts
Exact sciences and technology
Materials
Properties and performance tests of mortar and hardened concrete
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container_title ACI structural journal
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creator IBRAHIM, H. H. H
MACGREGOR, J. G
description Most concrete codes do not explicitly cover concrete with strengths above 50-60 MPa (7000 to 9000 psi). Compression stress blocks from three current codes that do allow design for high-strength concrete (SC) sections are presented. Comparisons of test data from the literature to strengths calculated using the current ACI rectangular stress block indicate it is not conservative for high strength concrete column sections failing in compression. New equations for the parameters that define the ACI rectangular stress block are suggested and compared to tests.
doi_str_mv 10.14359/459
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source American Concrete Institute Online Journal Archives
subjects Applied sciences
Buildings. Public works
Concretes. Mortars. Grouts
Exact sciences and technology
Materials
Properties and performance tests of mortar and hardened concrete
title Modification of the ACI rectangular stress block for high-strength concrete
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