Accession Number:

AD0757242

Title:

Investigation of Cement-Replacement Materials. Report II. Pulse Velocity and Compressive Strength at Advanced Ages of Phase D Concrete Blocks,

Descriptive Note:

Corporate Author:

ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS

Report Date:

1964-06-01

Pagination or Media Count:

19.0

Abstract:

In Phase D of the comprehensive investigation, described in Report 6 of this series, 25 mass concrete test blocks, 5 by 10 by 20 ft, were made from mixtures with nominal cement factors ranging from 1-34 to 4 bags per cu yd, with and without cement-replacement materials. The blocks were tested for comprssive strength and pulse velocity at ages from 2 to 360 days. To determine the effects of further aging on the strength and elastic properties of the various mixtures, selected blocks were again tested for compressive strength and all were tested for pulse velocity at ages of 7 to 9 years. For this investigation, nominal 10-in.-diameter cores were drilled from six blocks containing calcined shale, pumicite, or fly ash with cement factors ranging from 1-34 to 3 bags per cu yd, and from three comparable blocks containing no pozzolan. The cores were tested for compressive strength and modulus of elasticity. All 25 blocks were tested in place for pulse velocity block 6 was tested at both 100 and 110 months age. Author

Subject Categories:

  • Construction Equipment, Materials and Supplies

Distribution Statement:

APPROVED FOR PUBLIC RELEASE