Effect of rice husk ash on autogenous shrinkage of ultra high performance

Title: Effect of rice husk ash on autogenous shrinkage of ultra high performance
Author(s): Nguyen Van Tuan, Guang Ye, Klaas van Breugel
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: 293 - 304
Total Pages: 12
Nb references: 31
Language: English

Abstract: The objective of this work is to study the effect of rice husk ash (RHA) on autogenous shrinkage of Ultra High Performance Concrete (UHPC). The result was compared to that of the control sample without RHA and sample using silica fume (SF). The result shows that when 20% RHA was added, the autogenous shrinkage of UHPC was dramatically reduced, even eliminated in the later age. Moreover, the benefit of RHA on autogenous shrinkage was achieved when the particle size of RHA ranges between 5.6 µm and 9.0 µm, which was observed in this study. With 20% cement replacement, the development of compressive strength of RHA sample is more pronounced than that of SF sample. It suggests a mechanism for the internal curing of RHA in UHPC.

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