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Effect of elevated curing temperatures on the strength and durability of concrete

Title: Effect of elevated curing temperatures on the strength and durability of concrete
Author(s): A. R. Chini, L. Acquaye
Paper category : journal
Serial title: Materials and Structures
Abreviated Serial title: Mater. Struct.
ISSN: 1359-5997
Publisher: RILEM Publications SARL
Volume: 38
Issue: 281
Issue date: 2005-08-01
Publication year: 2005
Pages: 673 - 679
Total Pages: 7
Nb references: 9
Language: English

Abstract: In recent years, high core temperatures of 77oC 93oC (170oF 200oF) of mass concrete elements during curing have been recorded by the Florida Department of Transportation (FDOT).
These curing temperatures have been recorded while still maintaining the maximum differential temperature of 20oC (35oF) between the core and exterior of mass concrete elements as specified by the FDOT.
This study was conducted to evaluate the strength and durability of concrete subjected to elevated curing temperatures.
Using typical FDOT class IV mass concrete mixes; it is shown that while elevated curing temperatures resulted in high early-age strengths, their later-age strengths were lower than for samples cured at room temperatures.
The use of pozzolanic materials (18% Fly ash and 50% slag), as partial replacement of the cement, mitigated the detriments of elevated curing temperatures in plain cement mixes.
Blending the cement with fly ash and slag, resulted in increased strength and durability when compared to the plain cement mixes.

Online publication: 2005-01-21
Classification: Scientific Reports
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/14230

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