The effect of SCM replacement on autogenous deformation of high performance concrete

Author(s): Abdulaziz Alaskar, R. Douglas Hooton
Paper category: Proceedings
Book title: Proceedings of the International RILEM Conference
Materials, Systems and Structures in Civil Engineering 2016
Segment on Concrete with Supplementary Cementitious Materials
Editor(s): Ole M. Jensen, Konstantin Kovler and Nele De Belie
ISBN:978-2-35158-178-0
e-ISBN: 978-2-35158-179-7
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 212-217
Total Pages: 6
Language : English

Abstract: High-performance concrete (HPC) typically has a low water to cementing materials ratio (w/cm), high binder content and may contain high levels of supplementary cementitious materials. Therefore, it can be more vulnerable to early-age cracking due to higher early-age deformations resulting from autogenous and drying shrinkage as well as thermal gradients. In this study, HPC was made with two types of blended cements containing 8% SF mixed with two types and replacement levels of GGBFS (25%, 50%) by mass of cement at 0.33 w/cm. Linear autogenous deformation was measured at constant temperature using a copper mould (75x75x500mm) with circulating cooling water (in order to decouple autogenous from thermal deformation). It was found that early-age volume change increased as the fineness of blended cement and the GGBFS increased.

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