STRAIN RESILIENT CEMENTITIOUS COMPOSITES MADE WITH CALCAREOUS FLY ASH AND POLYPROPYLENE FIBERS: THE EFFECT OF TEMPERATURE AND FREEZE-THAW ON FLEXURAL TENSION

Author(s): Hirokazu Kiriyama (1), Eiji Maruya (1), Kenji Kawai (2), Ryoichi Sato(2)
Paper category: Proceedings
Book title: SynerCrete’18 International Conference on Interdisciplinary Approaches for Cement-based Materials and Structural Concrete
Editor(s): Miguel Azenha, Dirk Schlicke, Farid Benboudjema, Agnieszka Jędrzejewska
ISBN: 978-2-35158-202-2
e-ISBN: 978-2-35158-203-9
Publisher: RILEM Publications SARL
Publication year: 2018
Pages: 1011-1016
Total Pages: 6
Language : English

Abstract: A new ultra-high-performance fibre-reinforced concrete (UHPFRC) with a high alite content cement and fine pozzolanic powder matrix, has recently been developed in Japan. This new UHPFRC does not require the heat treatment needed for conventional UHPFRC. The new UHPFRC includes a large quantity of highly reactive binders and fine pozzolanic powder. Moreover, its hydration generates remarkably large heat and the development of its compressive strength is difficult to be evaluated. The objective of this study was to establish a method of estimating the compressive strength of this new UHPFRC. Therefore, the apparent
activation erergy of the new UHPFRC was estimated to modify the temperature adjusted age. It was found that the temperature dependency of the compressive strength can also be evaluated with high accuracy by using the modified temperature adjusted age. Additionally, it is possible that the apparent activation energy may depend on the reaction of fine pozzolanic powder.

Online publication : 2018
Publication type : full_text
Public price (Euros) : 0.00