UNDERSTANDING MATERIAL-DEPENDENT STRUCTURAL BEHAVIOUR FOR THE AGING MANAGEMENT OF CONCRETE STRUCTURES

Author(s): Ippei Maruyama
Paper category: Proceedings
Book title:Interdisciplinary Approaches for
Cement-based Materials and Structural
Concrete: Synergizing Expertise and
Bridging Scales of Space and Time
Final Conference of COST Action Tu1404
Editor(s): Miguel Azenha, Dirk Schlicke, Farid Benboudjema,
Agnieszka Jedrzejewska
ISBN Vol. 1:978-2-35158-211-4
ISBN Vol. 2: 978-2-35158-212-1
ISBN Vol. 1&2: 978-2-35158-202-2
e-ISBN Vol. 1&2: 978-2-35158-203-9
Publisher: RILEM Publications SARL
Publication year: 2018
Pages: 40-49
Total Pages: 10
Language : English

Abstract: The structural performance of concrete structures constantly changes due to the chemical and
physical reactions of concrete components in a given environment. For the long-term use of
concrete structures, such aging phenomena should be understood and controlled. Herein, the
most common environmental drying impacts on concrete structures are discussed with regards
to the cement paste, aggregate and their mutual interactions; the roles of these elements on
structural performance are clarified. The alteration of calcium silicate hydrate in Portland
cement paste during the first drying significantly impacts the strength and shrinkage of
cement paste and concrete. The rock-forming mineral composition of the aggregate used plays
a significant role in the volume stability. Damage caused by an imbalance of volumetric
change between aggregates and cement paste significantly contributes to the compressive
strength and Young’s modulus of concrete. Structural performance changes of a shear
reinforced concrete wall due to drying are explained by examining the roles of concrete
components.

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