Examining the frost resistance of high performance concrete |
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Authors: | W Micah Hale Seamus F Freyne Bruce W Russell |
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Affiliation: | 1. Department of Civil Engineering, University of Arkansas, Fayetteville, AR 72701, USA;2. Civil and Environmental Engineering Department, Manhattan College, Bronx, NY 10471, USA;3. School of Civil Engineering, Oklahoma State University, Stillwater, OK 74078, USA |
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Abstract: | The experimental program investigated the need for air entrainment in high performance concrete (HPC). Concrete mixtures with varying water to cementitious material ratios (w/cm) were subjected to ASTM C 666 (Procedure A). The variables for the mixtures were total air content and w/cm. The targeted total air contents for the mixtures were 2% (non-air entraining agent), 4%, and 6%. The w/cm ranged from 0.26 to 0.50. The 56 day compressive strengths varied from 41 to 96 MPa (6000–13,900 psi). The freeze-thaw tests continued until the specimen deteriorated, or until the specimen achieved 300 freeze-thaw cycles. For the materials used in the study, the research results show non-air entrained mixtures with w/cm less than 0.36 can be developed that have adequate frost resistance. The results also show for the mixtures developed in the study that a total air content of 4% is adequate to provide frost resistance for mixtures with a w/cm between 0.36 and 0.50. |
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