Evaluation of strength of reinforced concrete slabs operating under the changing water level

Author(s): Raimondas Šadzevičius, Rosita Norvaišienė, Edita Smetonaitė
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: 177-182
Total Pages: 6
Language : English

Abstract: Reinforced concrete slabs for ponds slope protection are under the impacts of various loads (ice, swimming solids or sediments, etc.) and aggressive environment; therefore they deteriorate and lose their durability especially in the zone of changing water level. The compressive strength of functioning concrete structures of hydraulic structures can be evaluated by testing the samples cut out from the investigated structures or by non-destructive methods (using rebound hammer).
During the investigation it was noticed, that all the investigated surfaces of reinforced concrete slabs for strengthening slopes of ponds in the zone of changeable water level are more or less deteriorated in form of pitting. Schmidt hammer rebound number and compressive strength of irregular samples taken from the reinforced concrete slabs were used for evaluation of whole upstream slope of pond. It is known, that the rebound hammer test shows only the state of the surface of concrete, therefore the result of compressive strength obtained by examining the core samples is more reliable, as it shows the strength of concrete in deeper layers. The irregular samples were taken from more deteriorated slabs, made from weaker concrete, compared with less deteriorated slabs tested by Schmidt hammer.

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