A Very Early Strength Concrete for Highway Construction

The purpose of this research study was to develop an improved very early strength (VES) concrete mix for highway construction. More than 50 concrete mixes were evaluated for strength, shrinkage, and curing rate (maturity), eventually leading to the development of an optimized VES concrete mix with i...

Full description

Saved in:
Bibliographic Details
Published in:Journal of testing and evaluation 2007-11, Vol.35 (6), p.1-9
Main Authors: Punurai, Sun, Punurai, Wonsiri, Hsu, Cheng-Tzu Thomas
Format: Article
Language:English
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The purpose of this research study was to develop an improved very early strength (VES) concrete mix for highway construction. More than 50 concrete mixes were evaluated for strength, shrinkage, and curing rate (maturity), eventually leading to the development of an optimized VES concrete mix with improved performance characteristics. The new mix, which is detailed in the paper, can gain strength more reliably than the former standard New Jersey Department of Transportation (NJDOT) VES mix, reaching a flexural strength of 350 psi (2.4 MPa) in less than 6.5 h. The improved mix also exhibited 79 to 93 % less shrinkage. The study found that maintaining an initial mix temperature of 28°C (82°F) is crucial to attain target strengths.
ISSN:0090-3973
DOI:10.1520/JTE100888