Mechanical Properties of Lightweight Cementitious Cellular Composites Incorporating Micro-Encapsulated Phase Change Material

This work focuses on combining digitally architected cellular structures with cementitious mortar incorporating micro-encapsulated phase change material (mPCM) to fabricated lightweight cementitious cellular composites (LCCCs). Voronoi structures with different randomness are designed for the LCCCs....

Full description

Saved in:
Bibliographic Details
Published in:Materials 2021-12, Vol.14 (24), p.7586
Main Authors: Wu, Zixia, Xu, Yading, Šavija, Branko
Format: Article
Language:English
Subjects:
3-D printers
Cellular structure
Composite materials
Compressive properties
Compressive strength
Concrete
Construction materials
Design
Encapsulation
Energy consumption
Energy efficiency
Geometry
Heat conductivity
Insulation
Lightweight
Mechanical properties
Mortars (material)
Numerical methods
Phase change materials
Seeds
Thermal insulation
Three dimensional printing
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:This work focuses on combining digitally architected cellular structures with cementitious mortar incorporating micro-encapsulated phase change material (mPCM) to fabricated lightweight cementitious cellular composites (LCCCs). Voronoi structures with different randomness are designed for the LCCCs. Aided by the indirect 3D printing technique, the LCCCs were prepared with a reference mortar (REF) and a mortar incorporating mPCM. The compressive behavior of the LCCCs was studied at the age of 28 days, by experimental and numerical methods. It was found that the highly randomized Voronoi structure and the mPCM have minor negative influence on the compressive properties of the LCCCs. The mPCM incorporated LCCCs have high relative compressive strength compared to conventional foam concrete. Furthermore, the critical role of air voids defects on the compressive behavior was identified. The highly randomized porous Voronoi structure, high mPCM content and good compressive strength ensure the LCCCs' great potential as a novel thermal insulation construction material.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma14247586