What is it about?
The paper found ways to use waste plastics that have become nuisance in Ghana and beyond for profitable and sustainable ventures.
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Why is it important?
Concrete paving blocks (cement: quarry dust: sand = 1:1:2) by weight or volume were produced to serve as Control having tested the compressive strength and water absorption properties. Composite paving blocks less in plastic (LP) on a mix ratio of 1:1:2 and high in plastic (HP) on a mix ratio of 1:0.5:1 by weight or volume were also produced and tested in the laboratory for compressive strength at 7, 14, and 21 days curing via water sprinkling and water absorption test were done after the 72 -h of soaking.
Perspectives
The study revealed after 21 days old that paving blocks in HP and LP having compressive strengths of 8.53 N/mm2 (water absorption = 0.5%) and 7.31 N/mm2 (water absorption = 2.7%) respectively were higher than the Control value of 6.07 N/mm2 (water absorption = 4.9%).
Dr Stephen Agyeman
Sunyani Technical University
Read the Original
This page is a summary of: Exploiting recycled plastic waste as an alternative binder for paving blocks production, Case Studies in Construction Materials, December 2019, Elsevier,
DOI: 10.1016/j.cscm.2019.e00246.
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