Short answer

Designers and engineers should consider the integration of processed waste plastics as aggregate in concrete products to enhance sustainability and manage waste streams.

Field
Resource Management
Source
American Journal of Science Engineering and Technology (2021)
Method
Experimental research and material testing.
Evidence
Strong effect

Incorporating shredded and melted PET and HDPE waste plastic with sand can produce hollow blocks that meet building code standards for compressive strength and water absorption. This resource management research insight is drawn from a 2021 study published in American Journal of Science Engineering and Technology. Using Experimental research and material testing., researchers explored how this design variable affects real-world outcomes. The key design takeaway: Designers and engineers should consider the integration of processed waste plastics as aggregate in concrete products to enhance sustainability and manage waste streams.

Study
Resource ManagementHigh ImpactStrong effect

Waste Plastic as a Sustainable Aggregate for Hollow Blocks

Incorporating shredded and melted PET and HDPE waste plastic with sand can produce hollow blocks that meet building code standards for compressive strength and water absorption.

American Journal of Science Engineering and Technology · 2021

01

Key Findings

  • 01Hollow blocks produced with waste plastic aggregates met Class-B requirements according to Ethiopian Building Code Standards.
  • 02A 1:2 ratio of plastic to sand yielded a compressive strength of 3.87 MPa.
  • 03The blocks exhibited high compressive strength and low water absorption.
  • 04The rough surface of the blocks aids in mortar bonding and facilitates plastering.
02

Application

Design takeaway

Designers and engineers should consider the integration of processed waste plastics as aggregate in concrete products to enhance sustainability and manage waste streams.

How to apply

Explore the use of locally sourced and processed plastic waste as an aggregate in concrete or block manufacturing, ensuring compliance with relevant building codes and standards.

Project actions

  • 01Clearly define the types of waste plastic you intend to use and research their properties.
  • 02Document the entire process of preparing the plastic and mixing it with other materials.
  • 03Ensure your testing methods align with recognized standards for construction materials.
03

Method & Evidence

AimTo investigate the feasibility of producing hollow blocks using waste plastic (PET and HDPE) as a partial aggregate replacement for sand and to evaluate their mechanical properties against established building standards.
MethodExperimental research and material testing.
ProcedureWaste PET and HDPE plastics were shredded, washed, dried, and melted at temperatures between 257-315°C. These melted plastics were then mixed with sand in various ratios (1:2, 1:3, 1:4, 1:5) and cast into hollow block molds (40cm x 20cm x 10cm). The produced blocks were tested for compressive strength and water absorption after 48 hours of curing.
ContextBuilding construction materials and waste management.

Variables

IV["Ratio of waste plastic to sand","Type of waste plastic (PET, HDPE)"]
DV["Compressive strength of hollow blocks","Water absorption of hollow blocks"]
CV["Hollow block dimensions (40cm x 20cm x 10cm)","Melting temperature range (257-315°C)","Curing time (48 hours)"]
04

Strengths & Limitations

Strengths

  • +Addresses a significant environmental issue (plastic waste).
  • +Provides empirical data on the performance of the composite material.
  • +Offers a practical application for recycled materials in construction.

Limitations

The study might not account for variations in plastic waste quality or the long-term effects of plastic degradation within the building material.

Reliability & validity

The reliability of the results depends on consistent processing of the plastic and accurate measurement of material properties. Validity is supported by comparison to established building code standards.

Think critically

What are the potential long-term environmental impacts of using plastics in building materials, and how can these be mitigated?

05

Design Principles

"Waste valorization: Transform waste materials into valuable resources through innovative processing and application."

This research offers a practical solution for managing plastic waste by transforming it into a valuable construction material. It addresses the environmental burden of plastic pollution while potentially reducing the cost and resource depletion associated with traditional building materials.

06

What This Means for Your Design

You can use melted plastic waste mixed with sand to make strong building blocks that are good for the environment.

How to use in your project

  • 1.Reference this study when exploring material innovation for sustainable construction projects.
  • 2.Use its findings to justify the inclusion of recycled materials in your design proposals.
07

Add to My Project

08

Quick Cite

Paragraph starter

This research demonstrates the successful production of hollow blocks using waste PET and HDPE plastics as aggregate, achieving compressive strengths that meet building code standards. The findings suggest a viable method for waste valorization in the construction industry, offering both environmental and economic benefits.

09

Source

American Journal of Science Engineering and Technology

Production of Hollow Block Using Waste Plastic and Sand

journal · 2021

View source

Questions About This Research

What does the research say about waste plastic as a sustainable aggregate for hollow blocks?
Designers and engineers should consider the integration of processed waste plastics as aggregate in concrete products to enhance sustainability and manage waste streams. Evidence: American Journal of Science Engineering and Technology (2021).
Why does "Waste Plastic as a Sustainable Aggregate for Hollow Blocks" matter for design?
This research offers a practical solution for managing plastic waste by transforming it into a valuable construction material. It addresses the environmental burden of plastic pollution while potentially reducing the cost and resource depletion associated with traditional building materials.
How can designers apply this research?
Designers and engineers should consider the integration of processed waste plastics as aggregate in concrete products to enhance sustainability and manage waste streams.
What were the main findings?
Hollow blocks produced with waste plastic aggregates met Class-B requirements according to Ethiopian Building Code Standards.. A 1:2 ratio of plastic to sand yielded a compressive strength of 3.87 MPa.. The blocks exhibited high compressive strength and low water absorption.. The rough surface of the blocks aids in mortar bonding and facilitates plastering.
What research method was used?
Experimental research and material testing..
How strong is the evidence?
Evidence strength is rated Strong effect, based on a 2021 journal from American Journal of Science Engineering and Technology.
What should I do differently in my next project?
Explore the use of locally sourced and processed plastic waste as an aggregate in concrete or block manufacturing, ensuring compliance with relevant building codes and standards.
What are the limitations?
The study focused on specific plastic types (PET and HDPE) and a limited range of ratios. Long-term durability and performance under various environmental conditions were not extensively evaluated.