Heat-Stored Engineered Cementitious Composite Containing Microencapsulated n-Octadecane with Cenosphere Shell

Sun, Huayang; Yu, Kunyang; Jia, Minjie; Wang, Zilong; Yang, Yingzi; Liu, Yushi

doi:10.3390/coatings15020135

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Heat-Stored Engineered Cementitious Composite Containing Microencapsulated n-Octadecane with Cenosphere Shell

by

Huayang Sun

^1,2,

Kunyang Yu

^1,2,3,*,

Minjie Jia

²,

Zilong Wang

³,

Yingzi Yang

² and

Yushi Liu

^1,2,*

¹

State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China

²

School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China

³

School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China

^*

Authors to whom correspondence should be addressed.

Coatings 2025, 15(2), 135; https://doi.org/10.3390/coatings15020135

Submission received: 26 December 2024 / Revised: 21 January 2025 / Accepted: 23 January 2025 / Published: 24 January 2025

(This article belongs to the Special Issue Advanced Functional Cement-Based Materials for Smart Applications)

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Abstract

In this study, a microencapsulated phase-change material (PCM) with an n-octadecane core and a fly ash cenosphere shell (ODE/FAC) was prepared and it was used to replace micro silica sand forming a novel kind of heat-stored engineered cementitious composite (HS-ECC). The influence of ODE/FAC content on the mechanical and thermal properties of the resulting HS-ECC was investigated. It turned out that the compressive strength, flexural strength, and tensile cracking strength of HS-ECC gradually decreased as the incorporation content of ODE/FAC increased, while the tensile strength and tensile strain capacity were enhanced. Moreover, the inclusion of ODE/FAC can obviously decrease the thermal conductivity of ECC, which indicates the elevated heat storage capacity. This work is significant because it provided new insights into the design of heat-stored ECC for synergistically improving the tensile properties and thermal energy storage performance.

Keywords: phase-change materials; engineered cementitious composites; mechanical properties; tensile properties; thermal energy storage

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MDPI and ACS Style

Sun, H.; Yu, K.; Jia, M.; Wang, Z.; Yang, Y.; Liu, Y. Heat-Stored Engineered Cementitious Composite Containing Microencapsulated n-Octadecane with Cenosphere Shell. Coatings 2025, 15, 135. https://doi.org/10.3390/coatings15020135

AMA Style

Sun H, Yu K, Jia M, Wang Z, Yang Y, Liu Y. Heat-Stored Engineered Cementitious Composite Containing Microencapsulated n-Octadecane with Cenosphere Shell. Coatings. 2025; 15(2):135. https://doi.org/10.3390/coatings15020135

Chicago/Turabian Style

Sun, Huayang, Kunyang Yu, Minjie Jia, Zilong Wang, Yingzi Yang, and Yushi Liu. 2025. "Heat-Stored Engineered Cementitious Composite Containing Microencapsulated n-Octadecane with Cenosphere Shell" Coatings 15, no. 2: 135. https://doi.org/10.3390/coatings15020135

APA Style

Sun, H., Yu, K., Jia, M., Wang, Z., Yang, Y., & Liu, Y. (2025). Heat-Stored Engineered Cementitious Composite Containing Microencapsulated n-Octadecane with Cenosphere Shell. Coatings, 15(2), 135. https://doi.org/10.3390/coatings15020135

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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Heat-Stored Engineered Cementitious Composite Containing Microencapsulated n-Octadecane with Cenosphere Shell

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