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- aggregation classification "C1".
- aggregation creator person.
- aggregation creator person.
- aggregation creator person.
- aggregation date "2011".
- aggregation format "application/pdf".
- aggregation hasFormat 2753409.bibtex.
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- aggregation isPartOf urn:isbn:9782351581162.
- aggregation isPartOf urn:issn:1461-1147.
- aggregation language "eng".
- aggregation publisher "RILEM Publications".
- aggregation rights "I have transferred the copyright for this publication to the publisher".
- aggregation subject "Technology and Engineering".
- aggregation title "Influence of bar diameter on top-bar effect in self-compacting concrete".
- aggregation abstract "Settlement and bleeding of fresh concrete cause the formation of voids under horizontal reinforcement bars and reduce steel-concrete bond. The reduction in bond with horizontally embedded bars located in the upper sections of structural elements as opposed to those located near the bottom is known as the ―top-bar effect‖. It is caused by several factors including the properties of the concrete, the position and the shape of the bars, the methods of concrete placement, and the type of formwork. This paper describes the results of a study carried out to assess the impact of the use of self-compacting concrete (SCC) on bond properties around steel reinforcement and the top-bar effect in columns and wall elements. Pull-out tests were carried out to determine bond strength between reinforcing steel bars and concrete. Two optimized SCC mixtures with slump flow values greater than 700 mm and a control concrete with a slump of 20-30 mm were investigated. The results showed that the maximum bond strength not always decreased when the diameter of the steel bar increased from 10 to 12 to 16 mm or when a lower strength class was used. The top-bar effect is clearly larger in the column made out of conventional vibrated concrete while the bond strengths in the SCC mixtures show little variations along the height of the column or wall.".
- aggregation authorList BK325159.
- aggregation endPage "8".
- aggregation startPage "1".
- aggregation volume "PRO 79".
- aggregation aggregates 2753420.
- aggregation isDescribedBy 2753409.
- aggregation similarTo LU-2753409.