4.7 Article

Incorporating PCM-enabled thermal energy storage into 3D printable cementitious composites

Journal

CEMENT & CONCRETE COMPOSITES
Volume 129, Issue -, Pages -

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.cemconcomp.2022.104492

Keywords

Thermal energy storage; 3D printing; Functional cementitious materials; Microencapsulated phase change Materials

Funding

  1. U.S. Department of Energy (DOE) Building Technology Office [DE-EE-0008677]
  2. University of Tennessee, Knoxville (UTK) startup funds
  3. DOE
  4. UTK

Ask authors/readers for more resources

This study investigates the feasibility of incorporating microencapsulated phase change materials (mPCM) into 3D printable cementitious composite materials. The results show that mPCM significantly affects the printability, mechanical properties, and thermal conductivity of the cementitious ink material. In addition, the inclusion of mPCM influences the printing parameters, with higher volume contents requiring a higher extrusion rate. Overall, the study suggests that mPCM has good potential for improving the thermal and energy performance of 3D printed buildings.
This paper delineates the feasibility of incorporating microencapsulated phase change materials (mPCM) into 3D printable cementitious composite materials. A comprehensive experimental program was carried out to evaluate the impacts of mPCM on the printability, microstructures, mechanical and thermal properties of cementitious 3D printing 'inks'. Results showed that the mPCM affected the printability of the cementitious ink material based on its physical properties (e.g., particle size) and volume loading - at lower volume loadings, mPCM increased the flowability of the cementitious ink material while leading to increased compressive strength and thermal conductivity for the hardened printed material. However, further increase in mPCM dosage led to a decrease in printability and, therefore, decrease in compressive strength and thermal conductivity as compared to the reference mixture. The results also showed that the inclusion of mPCM influence the printing parameters. In general, the inclusion of higher volume contents of mPCM necessitates a higher extrusion rate to achieve a desirable extrudability. Lastly, a thermal network model was formulated for 3D printed mPCM charged building components (e.g., wall). The study shows that microencapsulated PCM materials have good potential to be used in 3D printable cementitious mixtures for improving the thermal and energy performance of 3D printed buildings.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available