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Pro074

Long-term shrinkage and stress in ultra high strength concrete using porous ceramic waste for internal curing



Title: Long-term shrinkage and stress in ultra high strength concrete using porous ceramic waste for internal curing
Author(s): M. Suzuki, M.S. Meddah, R. Sato, T. Kawabata
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: 263 - 272
Total Pages: 10
Nb references: 13
Language: English


Abstract: The present study aims to investigate the effect of porous ceramic-coarse aggregate (PCWA), which is recycled roof tiles waste as an internal curing material, on the compressive strength, autogenous shrinkage and shrinkage induced stress in ultra-high strength concrete (UHSC) with water to binder ratio of 0.15, sealed and exposed to drying. Experimental results showed that the internal curing with PCWA contributed to increasing slightly the compressive strength, while the dosage of shrinkage reducing agent (SRA) and/or expansive additive (EX) caused a slight decrease in compressive strength at an temperature adjusted age of 650days, and that the internal curing with PCWA coupled with the dosage of both EX and SRA was considerably effective in reducing not only shrinkage strain but also resultant induced stress, independent of the exposure conditions; sealed and exposed to drying.


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