... of compressive strength, scaling, and freeze-thaw specimens. The maximum recorded temperatures ranged from 59 to 69°C, depending on the fresh concrete temperature. Control specimens from each of the four mixtures were cured at room temperature. Based on the amount of residue collected during scaling tests...

... encountered in ASTM C 666 Resistance of Concrete to Rapid Freezing and Thawing and ASTM C 1293 Standard Test Method for Concrete Aggregates by Determination of Length Change of Concrete Due to Alkali-Silica Reaction. The average number of freezing and thawing cycles at the site was counted using different...

... ratio, toughness, impact resistance, sound and heat insulation, and freezing and thawing resistance. The benefits of using magnesium oxychloride cement as a binder for rubberized concrete mixtures are discussed. Various applications in which rubcrete could be advantageous over conventional concrete...

...: air entrainment, air-void system, flow length, freezing and thawing, spacing factor The research carried out over the past 50 years in northern countries has clearly shown the predominant role of entrained air voids for the protection of concrete against frost action. Theoretical considerations...

... and other characteristics of the air-void system by using a numerical method developed earlier. The flow lengths were correlated to the results obtained from freezing and thawing tests previously carried out on the same concrete mixtures. They were also compared to spacing factors and Philleo factors...

... investigated, and the effect produced by large air voids on the computation of the spacing factor is discussed. KEYWORDS: air voids, freezing and thawing, microscopical examination, precision, operator, entrapped air voids The determination of the spacing factor and of the other air void characteristics...

..., frost resistance, freezing and thawing ASTM Test Method for Critical Dilation of Concrete Specimens Subjected to Freezing (C 671) [l] is used to evaluate the frost resistance of concrete by determining the period of time required for a specimen or specimens to take up water and manifest critical...

...GM Giaccio; VM Malhotra This paper gives results of an investigation undertaken to develop additional data on mechanical properties, and freezing and thawing resistance of high-volume Class F fly ash concrete made with ASTM Types I and III cements. A series of eight concrete mixtures involving...

...AD Buck; JP Burkes Examination of a high-alumina cement (HAC) concrete specimen made in the laboratory and exposed to several hundred cycles of freezing and thawing at Treat Island, ME, showed that its excellent durability was due to the fact that it was in fact air entrained. This was a surprise...

... soundness tests of coarse aggregates are compared in this paper with freezing and thawing tests of air-entrained concretes containing the aggregates. In one case, sodium sulfate soundness displayed a relationship to durability (freezing and thawing) test results, in a statistical sense, but the level...