Improving the mechanical and thermal performance of bio-based concrete through multi-objective optimization

Bio-based concrete, which utilizes recycled agricultural waste as aggregates, has emerged as a sustainable alternative material in the construction industry. Optimizing its combined mechanical and thermal performance can promote its environmental and energy benefits. To achieve this, this paper pres...

Full description

Saved in:
Bibliographic Details
Published in:Construction & building materials 2024-03, Vol.421, p.135673, Article 135673
Main Authors: Huang, Gang, Abou-Chakra, Ariane, Geoffroy, Sandrine, Absi, Joseph
Format: Article
Language:English
Subjects:
Bio-based material
Civil Engineering
Engineering Sciences
Mechanical properties
Multi-objective optimization
Multi-scale modeling
Thermal conductivity
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:Bio-based concrete, which utilizes recycled agricultural waste as aggregates, has emerged as a sustainable alternative material in the construction industry. Optimizing its combined mechanical and thermal performance can promote its environmental and energy benefits. To achieve this, this paper presents a multi-objective optimization approach to improve the overall performance of bio-based concrete based on multiscale structural features, considering the porosity, shape, orientation, and volume fraction. Optimization strategies are provided for three main industrial applications. Furthermore, this study addresses multiple design requirements, including high-volume bio-aggregates, more demanding performance requirements, low densities, and humid environments. The optimization results demonstrate that the optimal solution varies with industrial applications and requirements. Consequently, we quantitatively provide specific optimal solutions for each case, and offer designers three preferences for mechanical properties, insulation, or balanced performance. Overall, this study optimizes the comprehensive performance of bio-based concrete in terms of multiscale structures, thereby contributing to a more sustainable construction industry. •A customized multi-objective optimization approach for bio-based concrete.•Decision variables of shape, porosity, volume fraction, and orientation.•Differences in high-volume bio-aggregates, lightweight roofing, and humid environment.•Three preferences for mechanical performance, insulation, and balanced performance.•Optimal solutions for various industrial applications, requirements, and preferences.
ISSN:0950-0618
1879-0526
DOI:10.1016/j.conbuildmat.2024.135673