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Transforming waste into value: Advancing sustainable construction materials with treated plastic waste and foundry sand in lightweight foamed concrete for a greener future Cover

Transforming waste into value: Advancing sustainable construction materials with treated plastic waste and foundry sand in lightweight foamed concrete for a greener future

Open Access
|Jun 2025

Figures & Tables

Figure 1

Preparation of new composite of plastic waste pre-treated with polyester polymer and covered with waste foundry sand.
Preparation of new composite of plastic waste pre-treated with polyester polymer and covered with waste foundry sand.

Figure 2

Preparation steps for new composite.
Preparation steps for new composite.

Figure 3

Process of producing lightweight foamed concrete.
Process of producing lightweight foamed concrete.

Figure 4

Experimental program flow chart.
Experimental program flow chart.

Figure 5

Workability of lightweight foamed concrete.
Workability of lightweight foamed concrete.

Figure 6

Initial and final setting of lightweight foamed concrete.
Initial and final setting of lightweight foamed concrete.

Figure 7

Measured density of foam concrete with varying weight fractions of LWP.
Measured density of foam concrete with varying weight fractions of LWP.

Figure 8

Compressive strength of lightweight foamed concrete.
Compressive strength of lightweight foamed concrete.

Figure 9

Flexure strength of lightweight foamed concrete.
Flexure strength of lightweight foamed concrete.

Figure 10

Relation between compressive strength and flexure strength.
Relation between compressive strength and flexure strength.

Figure 11

Splitting strength of lightweight foamed concrete.
Splitting strength of lightweight foamed concrete.

Figure 12

Relation between compressive strength and splitting tensile strength.
Relation between compressive strength and splitting tensile strength.

Figure 13

UPV for lightweight foamed concrete.
UPV for lightweight foamed concrete.

Figure 14

Sorptivity of lightweight foamed concrete.
Sorptivity of lightweight foamed concrete.

Figure 15

Porosity of lightweight foamed concrete.
Porosity of lightweight foamed concrete.

Figure 16

Dry shrinkage of lightweight foamed concrete.
Dry shrinkage of lightweight foamed concrete.

Figure 17

Thermal conductivity of lightweight foamed concrete.
Thermal conductivity of lightweight foamed concrete.

Figure 18

Thermal diffusivity of lightweight foamed concrete.
Thermal diffusivity of lightweight foamed concrete.

Figure 19

Specific heat of lightweight foamed concrete.
Specific heat of lightweight foamed concrete.

Figure 20

CO2 emission and embodied CI of foamed concrete.
CO2 emission and embodied CI of foamed concrete.

Figure 21

Microstructural analysis of lightweight foamed concrete: (a) control mix, (b) 10% waste plastic, and (c) 20% waste plastic.
Microstructural analysis of lightweight foamed concrete: (a) control mix, (b) 10% waste plastic, and (c) 20% waste plastic.

Lightweight foamed concrete mix proportions

FC codingPlastic waste (%)Cement (kg·m−3)Sand (kg·m−3)Plastic waste (kg·m−3)Foam (kg·m−3)Water (kg·m−3)
LWP-P00480720022216
LWP-P10104806487222216
LWP-P202048058014022216
LWP-P303048050421622216
LWP-P404048043228822216
LWP-P505048036036022216
Language: English
Submitted on: Feb 27, 2025
Accepted on: May 16, 2025
Published on: Jun 12, 2025
Published by: Sciendo
In partnership with: Paradigm Publishing Services

© 2025 Quanwei Zhao, Qi Chen, Muwaffaq Alqurashi, A. Alsaluli, Sahar A. Mostafa, published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 License.