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- Title
Behaviour of Innovative Concrete Sandwich Panels with Pervious Concrete Core under Flexural Bending.
- Authors
ARUNRAJ CHRISTADOSS, Jeyabalan; PAZHANI, Chinnaraj
- Abstract
Research studies investigating the possibility of using 5 new core material (other than polystyrene) in concrete sandwich panels are being reported in the literature. Though several alternate core materials are suggested in the literature, not many would improve the fire-resistance property of the sandwich panels. Towards addressing this issue, in this paper, a lightweight pervious concrete core is proposed as a new alternative. Experimental studies were conducted to determine the flexural behavior of sandwich panels with pervious concrete core. The flexural behaviour was investigated under threepoint and four-point bending conditions. The geometrical variables considered were core thickness and a number of shear connector lines. The variables considered were found to influence the initial stiffness, cracking moment, ultimate moment, load-deflection behaviour and load-strain behaviour of the panels. Test results showed that, sandwich panels without shear connector trusses failed due to the separation of wythes, and the panels with shear connector trusses achieved composite action. An analytical study indicated that the equation given in ACI 318 underestimated the strength of the tested panels. The equation has to be modified by explicitly including the shear connector details in the equation for predicting the flexural strength with reasonable accuracy. Further experimental and analytical studies on prototype concrete sandwich panels with pervious concrete core produced using lightweight aggregates are required in view of developing design guidelines for practical applications.
- Subjects
LIGHTWEIGHT concrete; SANDWICH construction (Materials); CONCRETE panels; CORE materials; FLEXURAL strength; CONCRETE beams; COMPOSITE construction; TRUSSES
- Publication
Materials Science / Medziagotyra, 2023, Vol 29, Issue 3, p356
- ISSN
1392-1320
- Publication type
Article
- DOI
10.5755/j02.ms.32859