Self-sealing cement-based materials using superabsorbent polymers

Title: Self-sealing cement-based materials using superabsorbent polymers
Author(s): Hai Xiang Dennis Lee, Hong Seong Wong, Nick Buenfeld
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: 171 - 178
Total Pages: 8
Nb references: 9
Language: English

Abstract: Superabsorbent polymers (SAP) have the potential to be used as an admixture to enhance the self-sealing of cracks in cement-based materials such as concrete. In this study, cement paste and mortar specimens containing different types of SAP were cast and mechanically loaded to produce a single through-crack with controllable width between 100µm to 400µm. These specimens were then exposed to 0.02M sodium chloride solution at a pressure gradient of 4 and the flow rates were measured with time to evaluate the efficiency of the SAP for crack sealing. The cumulative flow through specimens containing 5% SAP by weight of cement was up to 85% lower than that of the control specimen.

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