Prediction of the Mechanical Performance of High-Strength Concrete Containing Biomedical Polymeric Waste Obtained from Dialysis Treatment
Open Access
- 25 February 2021
- journal article
- research article
- Published by MDPI AG in Applied Sciences
- Vol. 11 (5), 2053
- https://doi.org/10.3390/app11052053
Abstract
Since between 1.5 and 8 kg (400 kg/patient/year) of biomedical polymeric waste (BPW) is usually discarded by landfilling or combusting after each dialysis treatment, this study provides evidence for safe and environment-friendly utilisation of BPW, sourced from dialysis treatment and donated by the health and industrial partners, by incorporating it in high-strength concrete. Moreover, the paper aims to provide engineers, designers, and the construction industry with information regarding the mechanical performance of high-strength concrete containing BPW, and the susceptibility of the current international codes and standards on the prediction of the mechanical performance. A new concrete mix design incorporating BPW was proposed and verified by several trial mixes. Three Soft, Hard, and Hybrid BPW were added to the conventional high-strength concrete in different percentages ranging from 1.5% to 9% by weight of cement. Afterwards, the fresh and hardened concrete properties, namely slump, density, compressive strength, tensile strength, modulus of elasticity, and Scanning Electron Microscopy (SEM), were investigated, and existing prediction models were employed to verify their suitability for the new concrete. Generally, adding Hybrid BPW resulted in better mechanical performance than soft or hard BPW addition, while eliminating the waste separation phase. The results also showed that the mechanical performance of BPW-containing concrete is predictable by current codes, addressing possible engineering design limitations. New higher accuracy regression-based models were also proposed to reach better engineering interpretations.This publication has 46 references indexed in Scilit:
- Relationship between Compressive, Splitting Tensile and Flexural Strength of Concrete Containing Granulated Waste Polyethylene Terephthalate (PET) Bottles as Fine AggregateAdvanced Materials Research, 2013
- Physical and mechanical properties of mortars containing PET and PC waste aggregatesWaste Management, 2010
- Long-term performance of recycled PET fibre-reinforced cement compositesConstruction and Building Materials, 2010
- Influence of content and particle size of waste pet bottles on concrete behavior at different w/c ratiosWaste Management, 2009
- Characteristics of mortar and concrete containing fine aggregate manufactured from recycled waste polyethylene terephthalate bottlesConstruction and Building Materials, 2009
- Performance of concretes reinforced with recycled plastic fibresMagazine of Concrete Research, 2009
- Properties of lightweight aggregate concrete prepared with PVC granules derived from scraped PVC pipesWaste Management, 2009
- Healthcare waste management: Current practices in selected healthcare facilities, BotswanaWaste Management, 2008
- Use of selected waste materials in concrete mixesWaste Management, 2007
- Medical wastes characterisation in healthcare institutions in MauritiusWaste Management, 2005