Accession Number : AD0428485


Title :   EFFECT OF COLOR VARIATION OF CONCRETE ON ITS FREEZING AND THAWING RESISTANCE FLAMING GORGE DAM, 1961,


Corporate Author : BUREAU OF RECLAMATION DENVER COLO


Personal Author(s) : Briggs,G O


Report Date : 30 Dec 1963


Pagination or Media Count : 9


Abstract : Distinct differences in color between interior and exterior concrete and color variations of interior concrete were reported during concrete placing operations at Flaming Gorge Dam in the spring of 1961. Generally, concrete containing pozzolan presented a dark, muddy appearance while exterior concrete without pozzolan was of the usual grey color. In order to determine what effect, if any, these color variations had on properties of the concrete, field-fabricated 6by 12-in. cylinders along with samples of project cement, pozzolan, and water were shipped to the Denver laboratories for testing in concrete. Freeze-thaw durability testing was performed on 2 field-fabricated 6- by 12-in. cylinders, 1 from interior and 1 from exterior concrete, as well as on 3- by 6-in. specimens cast from 10 laboratory mixes using different combinations of the project cement, pozzolan, and project water in addition to Denver tapwater. Results of these tests are reported. (Author)


Descriptors :   *CEMENTS , FREEZING , CONCRETE , COLORS , CYLINDRICAL BODIES , MIXTURES , STRUCTURAL PROPERTIES


Distribution Statement : APPROVED FOR PUBLIC RELEASE