Lightweight concrete made from crushed oil palm shell: Tensile strength and effect of initial curing on compressive strength

► Crushed OPS concrete (OPSC) has higher compressive strength than uncrushed OPSC. ► Splitting tensile strength of crushed OPSC is much higher than uncrushed OPSC. ► Flexural strength of crushed OPSC is significantly higher than uncrushed OPSC. ► The sensitivity of crushed OPSC in poor curing is muc...

Full description

Saved in:
Bibliographic Details
Published in:Construction & building materials 2012-02, Vol.27 (1), p.252-258
Main Authors: Shafigh, Payam, Jumaat, Mohd Zamin, Mahmud, Hilmi Bin, Hamid, Norjidah Anjang Abd
Format: Article
Language:English
Subjects:
Analysis
Compressive strength
Concrete
Crushed oil palm shell
Curing
Materials
Oil palm
Oils and fats industry
Properties
Services
Strength of materials
Tensile strength
Waxes industry
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:► Crushed OPS concrete (OPSC) has higher compressive strength than uncrushed OPSC. ► Splitting tensile strength of crushed OPSC is much higher than uncrushed OPSC. ► Flexural strength of crushed OPSC is significantly higher than uncrushed OPSC. ► The sensitivity of crushed OPSC in poor curing is much lower than uncrushed OPSC. Oil palm shell (OPS) is a waste lightweight aggregate originating from the palm oil industry, which is approximately 50% lighter than conventional aggregate. In this study, crushed old OPS was used as coarse aggregate. Compressive strength under different curing conditions and the splitting tensile and flexural strengths were compared with those of the normal weight granite concrete. The test results showed that OPS concrete with a compressive strength in the range of 34–53 MPa has a splitting tensile strength range of 2.8–3.5 MPa and flexural strength range of 4.4–7.0 MPa. The sensitivity of compressive strength of OPS concrete in this study is significantly lower than uncrushed OPS concrete reported in the literature. The sensitivity of OPS concrete, under poor curing regime, can be reduced by decreasing the water/cement ratio, increasing the OPS content or reducing the cement content. It was found that there was no substantial difference in 28-day compressive strength for OPS concretes cured initially for 3, 5 and 7 days. The 28-day compressive, splitting tensile and flexural strengths of OPS concrete was found to be 38%, 28% and 17%, lower than that of granite concrete, respectively.
ISSN:0950-0618
1879-0526
DOI:10.1016/j.conbuildmat.2011.07.051