A STUDY ON SIZE VARIATION OF PALM KERNEL SHELLS AS REPLACEMENT OF COARSE AGGREGATE FOR LIGHTWEIGHT CONCRETE PRODUCTION
A STUDY ON SIZE VARIATION OF PALM KERNEL SHELLS AS REPLACEMENT OF COARSE AGGREGATE FOR LIGHTWEIGHT CONCRETE PRODUCTION
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Date
2021
Authors
Danso,Humphery
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Conference Paper
Abstract
Utilization of palm kernel shell (PKS) as alternative to conventional materials for the construction
industry is desirable to promote sustainable development. The purpose of this study is to
investigate the physical and mechanical properties of lightweight concrete produced with different
sizes of PKS as coarse aggregate replacement. PKS of sizes 6, 8, 10, 12 mm and mixed of all the
sizes were used to replace coarse aggregate in concrete which resulted in producing 60 cubes
and 30 beams at 7, 14, 21 and 28 days of curing. The tests performed on the concrete specimens
are dry density, compressive strength and flexural strength. It was revealed that the densities of
the concrete specimens were all less than 2000 kg/m3
, which implies that the PKS concrete
satisfied the requirement of lightweight concrete for structural application. The compressive
strength of the 12 mm PKS concrete specimens at 28-day of curing was 10.2 MPa which was 4.0
– 15.9% better than the other PKS sizes concrete. The flexural strength of the 12 mm PKS
concrete specimens at 28-day of curing was 2.85 MPa which was also 3.2 - 57.07% better than
the other PKS sizes concrete. A recommendation for 12 mm PKS size is made to construction
practitioners for lightweight concrete structural application
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Citation
Danso, H., & Appiah-Agyei, F. (2021). Size variation of palm kernel shells as replacement of coarse aggregate for lightweight concrete production. Open Journal of Civil Engineering, 11(1), 153-165.