Size Variation of Palm Kernel Shells as Replacement of Coarse Aggregate for Lightweight Concrete Production
Open Access
- 1 January 2021
- journal article
- research article
- Published by Scientific Research Publishing, Inc. in Open Journal of Civil Engineering
- Vol. 11 (01), 153-165
- https://doi.org/10.4236/ojce.2021.111010
Abstract
The utilization of palm kernel shells (PKS) as an alternative to conventional materials for construction is desirable to promote sustainable development. The purpose of this study is to investigate the properties of lightweight concrete produced with different sizes of PKS of 6, 8, 10, 12 mm and mix (consisting of 25% each of the four sizes). RPK sizes were used to replace coarse aggregate in the concrete and cured for 7, 14, 21 and 28 days. The tests performed on the concrete are dry density, compressive strength, flexural strength, EDS and SEM. 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% to 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% to 57.07% better than the other PKS sizes concrete. It was also revealed by the SEM analysis that there was a good bond between the palm kernel shells and the mortar. A high calcium-silicate content was found in the concrete which resulted in a Ca/Si ratio of 1.26 and Al/Si ratio of 0.11. The study therefore concludes that size variations of PKS as replacement of coarse aggregate have an influence on the properties of the lightweight concrete and recommends 12 mm PKS for use by construction practitioners for lightweight concrete structural application.Keywords
This publication has 17 references indexed in Scilit:
- Compressive Behavior of Concrete under Environmental EffectsPublished by IntechOpen ,2020
- Green technology extraction and characterisation of silica nanoparticles from palm kernel shell ash via sol–gelJournal of Materials Research and Technology, 2019
- Influence of coconut fibres and lime on the properties of soil-cement mortarCase Studies in Construction Materials, 2019
- Prediction of optimum compressive strength of light-weight concrete containing Nigerian palm kernel shellsJournal of King Saud University - Engineering Sciences, 2019
- Compressive strength of concrete with palm kernel shell as a partial replacement for coarse aggregateSN Applied Sciences, 2019
- Compressive Strength of Concrete Produced with Proportions of Coconut and Palm Kernel ShellsInternational Journal of Architecture, Engineering and Construction, 2019
- Dataset on the microstructure morphology and elemental composition of the palm kernel shell and the coconut kernel shell by TEM/SEM and EDXA/EDSData in Brief, 2018
- Influence of the Ca/Si ratio of the C–S–H phase on the interaction with sulfate ions and its impact on the ettringite crystallization pressureCement and Concrete Research, 2015
- Nanoindentation and nanoscratch properties of mullite-based environmental barrier coatings: Influence of chemical composition — Al/Si ratioSurface and Coatings Technology, 2014
- A comparative study of concrete properties using coconut shell and palm kernel shell as coarse aggregatesJournal of Affective Disorders, 2006