Assessing the autogenous shrinkage cracking propensity of concrete - methodological aspects

Title: Assessing the autogenous shrinkage cracking propensity of concrete - methodological aspects
Author(s): S. Eppers, V. Mechtcherine, C. Müller
Paper category : conference
Book title: International RILEM Conference on Use of Superabsorbent Polymers and Other New Additives in Concrete
Editor(s): O.M. Jensen, M.T. Hasholt and S. Laustsen
Print-ISBN: 978-2-35158-104-9
e-ISBN: 978-2-35158-105-6
Publisher: RILEM Publications SARL
Publication year: 2010
Pages: 45 - 56
Total Pages: 12
Nb references: 26
Language: English

Abstract: Restrained ring tests were carried out to investigate the autogenous shrinkage cracking propensity (ASCP) of ultra-high strength concrete with and without shrinkage-reducing additives. The investigation comprised the splitting tensile strength, the free autogenous shrinkage and the elastic modulus, tested from very early age to the age of 24 hours. In additional ring tests concrete was exposed to very low humidity from different ages. The maximum stress at failure occurring shortly after the onset of drying is compared to the splitting tensile strength. The discrepancies being particularly large at very early age reveal that the splitting tensile strength needs to be corrected by an age-dependent coefficient to correctly predict the ASCP. Furthermore, radial redistribution of hoop stresses in restrained ring tests is believed to have influenced results.

Online publication: 2010-10-04
Publication type : full_text
Public price (Euros): 0.00