Accession Number : AD0732220

Title :   Temperature Rise of Mass Concrete Mixtures,

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS

Personal Author(s) : Tynes,W. O.

Report Date : AUG 1968

Pagination or Media Count : 15

Abstract : Temperature rise of 11 mixtures, six containing varying large amounts of pozzolan and small amounts of portland cement with chemical admixtures, was investigated. All concrete mixtures contained manufactured limestone fine aggregate and 6-in. maximum size limestone coarse aggregate and were proportioned to have a slump of 1-1/2 to 2 in. and an air content of 6.5 plus or minus 0.5 percent measured on that portion of the mixtures passing a 1-1/2-in. sieve. Three chemical admixtures, lignosulfonate with triethanolamine (AD-46), a lignosulfonate without an accelerator or catalyst (AD-121), and an alkali metal salt of a hydroxylated carboxylic acid (AD-141), were selected for testing in the mass concrete mixtures. One of these three admixtures, AD-46, complied with the specification requirements for water-reducing admixtures; the other two complied with those for water-reducing and retarding admixtures. Temperature rise was not significantly affected by the use of chemical admixtures in nine mass concrete mixtures, six of which contained more pozzolan than portland cement.

Descriptors :   (*CONCRETE, *THERMAL ANALYSIS), (*CEMENTS, WATER), (*CONCRETE, WATER), TEMPERATURE, MIXTURES, ALCOHOLS, SULFATES

Subject Categories : Construction Equipment, Materials & Supplies

Distribution Statement : APPROVED FOR PUBLIC RELEASE