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Shrinkage of mortars with a suspension of superabsorbent polymers

Title: Shrinkage of mortars with a suspension of superabsorbent polymers
Author(s): A. Bettencourt Ribeiro, M. Vinagre, A. Gonçalves
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: 213 - 222
Total Pages: 10
Nb references: 6
Language: English

Abstract: The use of superabsorbent polymers (SAP) is effective in controlling internal desiccation of cementitious materials with low W/C. Until now, the use of this type of products is limited to research and special applications. The spread of the use on concrete for current applications depends on economy considerations and ease of application. A sample of a suspension of SAP, which is easy to incorporate in concrete production, was supplied by a large producer, containing 3 % of polymer. Autogenous shrinkage, total shrinkage, mass loss and compressive strength tests were performed in mortars with W/C=0.325 and W/C=0.42, with and without SAP. Results indicate that, if sufficient amount of the suspension is used, the admixture is useful for controlling early age shrinkage, but no benefits are evident for total shrinkage at 28 days, and a decrease of compressive strength is observed.

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

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