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Investigation of bond behaviour between recycled aggregate concrete and deformed steel bars
The results of 45 pullout tests on 8, 10 and 12 mm diameter deformed steel bars concentrically embedded in recycled aggregate concrete designed using equivalent mix proportions with coarse recycled concrete aggregate (RCA) replacement levels of 25, 50, 75 and 100 % are described here. Although consistent results were not obtained for the 8 mm bars, the normalized bond strengths of the 10 and 12 mm bars across all RCA replacement levels were higher for the RCA concretes compared with the natural coarse aggregate concrete, and they increased with RCA replacement levels. Brittleness index, an analogous parameter from rock mechanics, has been shown to be a relevant predictor of the measured bond strengths. An empirical bond stress–slip relationship has been proposed and it has been conservatively suggested that anchorage lengths for the 10 and 12 mm deformed bars in recycled aggregate concrete may be taken to be the same as those in natural aggregate concrete.
Investigation of bond behaviour between recycled aggregate concrete and deformed steel bars
The results of 45 pullout tests on 8, 10 and 12 mm diameter deformed steel bars concentrically embedded in recycled aggregate concrete designed using equivalent mix proportions with coarse recycled concrete aggregate (RCA) replacement levels of 25, 50, 75 and 100 % are described here. Although consistent results were not obtained for the 8 mm bars, the normalized bond strengths of the 10 and 12 mm bars across all RCA replacement levels were higher for the RCA concretes compared with the natural coarse aggregate concrete, and they increased with RCA replacement levels. Brittleness index, an analogous parameter from rock mechanics, has been shown to be a relevant predictor of the measured bond strengths. An empirical bond stress–slip relationship has been proposed and it has been conservatively suggested that anchorage lengths for the 10 and 12 mm deformed bars in recycled aggregate concrete may be taken to be the same as those in natural aggregate concrete.
Investigation of bond behaviour between recycled aggregate concrete and deformed steel bars
Prince, M.John Robert (author) / Singh, Bhupinder (author)
Structural Concrete ; 15 ; 154-168
2014
15 Seiten, 14 Bilder, 5 Tabellen, 36 Quellen
Article (Journal)
English
Bond behaviour between recycled aggregate concrete and deformed steel bars
| Springer Verlag | 2013
Bond behaviour between recycled aggregate concrete and deformed steel bars
| British Library Online Contents | 2014
Bond behaviour between recycled aggregate concrete and deformed steel bars
| Online Contents | 2014
Bond behaviour between recycled aggregate concrete and deformed steel bars
| Online Contents | 2013
Bond behaviour between recycled aggregate concrete and deformed steel bars
| Online Contents | 2013