Effect of oil palm shell treatment on the physical and mechanical properties of lightweight concrete. (10th February 2018)

• Record Type: Journal Article
• Authors: Traore, Yasmine Binta; Messan, Adamah; Hannawi, Kinda; Gerard, Jean; Prince, William; Tsobnang, Francois
• Is Part Of: Construction & building materials. Volume 161(2018)
• Page Start: 452
• Page End: 460
• Publication Date: 2018-02-10
• Subjects: Biosourced materials -- Oil palm shell treatment -- Lightweight concrete -- Mechanical behaviour; Building materials -- Periodicals; 624.18
• DOI: 10.1016/j.conbuildmat.2017.11.155
• Languages: English
• ISSNs: 0950-0618

Abstract

Highlights: Different surface treatments are applied on oil palm shell (OPS). Effects of treated OPS on physico-mechanical properties of concrete are studied. Lime treatment increases the mechanical properties of OPS concrete. Sodium silicate treatment has not enhanced the bond between cement paste and OPS. Prewetting OPS and PVA treatment reduces the shrinkage and thermal conductivity. Abstract: The overuse of natural aggregates for construction causes many environmental problems. In light of their environmental impact, the discussion has increasingly focused on using alternative plant-based materials and processes such as oil palm shells (OPS). However, previous studies show that OPS have a weak adhesion with cement paste, which results in a decrease in the physical and mechanical properties of OPS concretes. One of the solutions for this problem is to carry out a surface treatment on OPS before using them in concrete. This study has examined the influence of five treatments on the physical and mechanical properties of concrete: treatment with lime (CH), sodium silicate (SS), polyvinyl alcohol (PVA), heat treatment (TH) and OPS saturation (SAT). Lime treatment (CH) on OPS showed good improvement in the mechanical properties of concrete, compared to untreated OPS.