Understanding of material dependent structural behavior for aging management of concrete structures

Author(s): Ippei Maruyama
Paper category: Proceedings
Book title: SynerCrete’18: Interdisciplinary Approaches for Cement-based Materials and Structural Concrete: Synergizing Expertise and Bridging Scales of Space and Time Vol. 1 & 2
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: 11-20
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