Shear behaviour of reinforced palm kernel shell concrete beams

► PKSC beams showed superior performance compared to NWC. ► Shorter narrower cracks in the PKSC beams showed good aggregate interlock. ► PKSC beams without shear links produced 24% higher shear strength than NWC beams. ► Non-linear analysis predicted the shear within 20% of the experimental results....

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Published in:Construction & building materials 2011-06, Vol.25 (6), p.2918-2927
Main Authors: Johnson Alengaram, U., Jumaat, Mohd Z., Mahmud, Hilmi, Fayyadh, Moatasem M.
Format: Article
Language:English
Subjects:
Aggregate interlock
Concretes
Construction materials
Cracks
Kernels
Lightweight aggregate
Mechanical properties
Palm
Palm kernel shell
Shear
Shear strength
Shells
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cited_by cdi_FETCH-LOGICAL-c528t-ca5a9f8380b445cf24a30470180e2d79993c393667ae90d1e72e3298579f2f6c3
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creator Johnson Alengaram, U.
Jumaat, Mohd Z.
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description ► PKSC beams showed superior performance compared to NWC. ► Shorter narrower cracks in the PKSC beams showed good aggregate interlock. ► PKSC beams without shear links produced 24% higher shear strength than NWC beams. ► Non-linear analysis predicted the shear within 20% of the experimental results. The shear behaviour of palm kernel shell concrete (PKSC) beams prepared using palm kernel shell (PKS) as lightweight aggregate (LWA) is reported here. The shear strength of grade 30 PKSC with a density of 1850kg/m3 was found 24% higher than the corresponding normal weight concrete (NWC). Good aggregate interlock in PKSC was evident as it produced shorter jagged cracks compared to longer plain cracks of NWC. Further, PKSC was able to produce twice as many flexural and shear cracks compared to NWC. Tension stiffening between the tensile cracks of PKSC enhanced flexural rigidity and dowel action. The non-linear numerical analysis predicted the shear strength within an average 20% of the experimental results.
doi_str_mv 10.1016/j.conbuildmat.2010.12.032
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The shear behaviour of palm kernel shell concrete (PKSC) beams prepared using palm kernel shell (PKS) as lightweight aggregate (LWA) is reported here. The shear strength of grade 30 PKSC with a density of 1850kg/m3 was found 24% higher than the corresponding normal weight concrete (NWC). Good aggregate interlock in PKSC was evident as it produced shorter jagged cracks compared to longer plain cracks of NWC. Further, PKSC was able to produce twice as many flexural and shear cracks compared to NWC. Tension stiffening between the tensile cracks of PKSC enhanced flexural rigidity and dowel action. 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source ScienceDirect Journals
subjects Aggregate interlock
Concretes
Construction materials
Cracks
Kernels
Lightweight aggregate
Mechanical properties
Palm
Palm kernel shell
Shear
Shear strength
Shells
title Shear behaviour of reinforced palm kernel shell concrete beams
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