Palm Oil Fuel Ash as A Cement Replacement in
Concrete
Volume 1 - Issue 1
Jonida Pone, Ahmed Ash*, John Kamau and Fraser Hyndman
-
Author Information
Open or Close
- Department of Civil Engineering Group, Leeds Beckett University, UK
*Corresponding author:
Ahmed Ash, Department of Civil Engineering Group, Leeds Beckett University, UK
Received: November 01, 2018; Published: November 27, 2018
DOI: 10.32474/MAMS.2018.01.000102
Full Text
PDF
To view the Full Article Peer-reviewed Article PDF
Abstract
To produce concrete, cement is an essential material that binds together solid bodies but also is the largest producer of carbon
dioxide (CO2) emission. Up to 10% of global CO2 emission comes from cement production thus making the sustainability of concrete
a major issue that needs addressing. The processes of producing concrete consume heavily on natural resources such as sand,
gravel, water, coal and crushed rock, mining of which damages the environment. It is however possible, that energy and cost
efficiency can be achieved by reducing on the amount of clinker, and in its place utilizing partial cement replacements/pozzolans
that require less process heating and emit fewer levels of carbon dioxide. This study investigates the effectiveness of agro waste
ash by-product Palm Oil Fuel Ash (POFA) as an alternative material to replace Portland cement (OPC). Experiments were carried
out by supplementing CEM I cement by weight in concrete mixes with POFA at 2.5%, 5%, 10%, 15% and 20% steps at the point of
need, with water to cement ratio of 0.5. Results were compared with a control specimen, which was made with 100% cement. The
results showed impressive compressive strength, especially at early age; in fact POFA specimens containing 2.5% and 5% POFA
replacement displayed greater early compressive strength in comparison to the control, which is similar in behaviour to concrete
containing silica fume which is an established partial cement replacement used in high strength applications. The results showed
good repeatability and highlight the potential of POFA as an effective pozzolan which could enhance the sustainability and economic
aspect of concrete.
Abstract|
Introduction|
Methods|
Results and Discussion|
Conclusion|
References|