Prediction of concrete setting

Title: Prediction of concrete setting
Author(s): Anton K. Schindler
Paper category : conference
Book title: International RILEM Symposium on Concrete Science and Engineering: A Tribute to Arnon Bentur
Editor(s): J. Weiss, K. Kovler, J. Marchand, and S. Mindess
Print-ISBN: None
e-ISBN: 2912143926
Publisher: RILEM Publications SARL
Publication year: 2004
Nb references: 14
Language: English

Abstract: With knowledge of the time to initial set, contractors will be able plan measures to finish, texture, and saw cut concrete pavements on time. The point at which final set occurs is of importance, since it provides an estimate of when the concrete strength and stiffness development will start. In this study, experimental work was performed under laboratory and field conditions to determine the effect of temperature, different cements, and supplementary cementing materials on the initial and final setting times of concrete mixtures. The objectives of this paper are to present and calibrate a setting model that correlates the degree of hydration to the setting times collected under laboratory and field conditions. Initial and final set times of the concrete were determined with penetration resistance testing. Field data were collected from seven concrete pavement projects paved throughout the year, in different climatic regions. The results indicate that final setting occurs at approximately the same degree of hydration for a particular mixture irrespective of the curing history. This observation is also true for the initial set condition. Models are developed to predict the setting of concrete with the degree of hydration and the water-cementitious materials ratio as variables.

Online publication: 2004-03-25
Classification: Plastic Shrinkage
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143926.002