Evaluation of Rheological Behavior of HPSCC Containing SRA and Expansive Admixture

Author(s): Ronaldo Pilar, Rudiele Aparecida Schankoski, Wellington Longuini Repette, Raissa Douglas Ferron
Paper category: Conference
Book Title: 8th International RILEM Symposium on Self-Compacting Concrete - SCC 2016
Editor: Kamal H. Khayat
ISBN: 978-2-35158-156-8
e-ISBN: 978-2-35158-157-5
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 203-212
Total Pages: 10
Language: English

Abstract: In this paper, shrinkage-reducing admixture (SRA) and expansive admixture (EXA) were used to design high performance self-compacting concrete (HPSCC). In order to evaluate rheological behavior of mixtures, fresh properties of concretes were determined by ICAR rheometer at 10, 25, 40, 60 and 90 min. Simultaneously, the slump flow test at 10 and 100 min, V-funnel test and J-Ring test were also carried out. Empirical test results showed that all mixtures had similar performance, independent of SRA and EXA content at 10 minutes. However, slump flow diameter shows a reduction of up to 23.6% of its diameter at 100 min for mixtures with EXA. Concretes designed with SRA and EXA showed lower plastic viscosity and higher dynamic yield stress than the reference mixture mainly after 40 min. Mixtures with SRA and EXA required a higher dosage of superplasticizer than the reference mixture to achieve similar slump flow diameter.

Online publication: 2016
Publication Type: full_text
Public price (Euros): 0.00