Mortar with Substituted Recycled PET Powder: Experimental Characterization and Data-Driven Strength Predictive Models

AbstractThe physical and mechanical characteristics of a novel mortar that uses recycled PET powder as a replacement for natural sand are examined in this paper. This study specifically looks at the impacts of replacing recycled polyethylene terephthalate (PET) powder in place of fine aggregates in...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials in civil engineering 2023-09, Vol.35 (9)
Main Authors: Xiong, Beibei, Falliano, Devid, Restuccia, Luciana, Di Trapani, Fabio, Demartino, Cristoforo, Marano, Giuseppe Carlo
Format: Article
Language:English
Subjects:
Building materials
Civil engineering
Compressive strength
Controllability
Density
Flexural strength
Mechanical properties
Mortars (material)
Polyethylene terephthalate
Prediction models
Sand
Substitutes
Technical Papers
Three dimensional printing
Water absorption
Workability
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:AbstractThe physical and mechanical characteristics of a novel mortar that uses recycled PET powder as a replacement for natural sand are examined in this paper. This study specifically looks at the impacts of replacing recycled polyethylene terephthalate (PET) powder in place of fine aggregates in mortars. To create five distinct mortar mixes, recycled PET powder was substituted in varying proportions (0%–30% by volume of the sand). The investigation focuses on the physical and mechanical characteristics of the material, including density, slump, water absorption, ultrasonic pulse velocity, flexural and compressive strength, and microstructural and interface characterization. Results reveal that the substitution of recycled PET powder reduces slump, compressive strength, ultrasonic pulse velocity, dry and wet density, and slump, whereas flexural strength and fracture energy exhibit the reverse tendency. The slump variation indicates the controllable workability of the mortar in the fresh state. The latter feature is quite important for the application of such a material where flowability is a dominating parameter, e.g., 3D printing. Two data-driven models for the compressive and flexural strength reduction factors as a function of the substitution ratio based on symbolic regression techniques are proposed using the findings of this study in conjunction with data from the literature.
ISSN:0899-1561
1943-5533
DOI:10.1061/JMCEE7.MTENG-16065