scholarly journals Thermophysical and Mechanical Properties of Hardened Cement Paste with Microencapsulated Phase Change Materials for Energy Storage

Materials ◽  
2014 ◽  
Vol 7 (12) ◽  
pp. 8070-8087 ◽  
Author(s):  
Hongzhi Cui ◽  
Wenyu Liao ◽  
Shazim Memon ◽  
Biqin Dong ◽  
Waiching Tang
Keyword(s):  
Mechanical Properties ◽  
Energy Storage ◽  
Phase Change ◽  
Cement Paste ◽  
Phase Change Materials ◽  
Hardened Cement ◽  
Hardened Cement Paste ◽  
Microencapsulated Phase Change Materials

scholarly journals Alkali-Activated Cements for TES Materials in Buildings’ Envelops Formulated With Glass Cullet Recycling Waste and Microencapsulated Phase Change Materials

Materials ◽  
2019 ◽  
Vol 12 (13) ◽  
pp. 2144 ◽  
Author(s):  
Jessica Giro-Paloma ◽  
Camila Barreneche ◽  
Alex Maldonado-Alameda ◽  
Miquel Royo ◽  
Joan Formosa ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Energy Storage ◽  
Phase Change ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Phase Change Materials ◽  
Glass Cullet ◽  
Microencapsulated Phase Change Materials ◽  
Building Walls ◽  
Alkali Activated

Within the thermal energy storage field, one of the main challenges of this study is the development of new enhanced heat storage materials to be used in the building sector. The purpose of this study is the development of alkali-activated cements (AACs) with mechanical properties to store high amounts of heat. These AACs incorporate wastes from industrial glass process as well as microencapsulated phase change materials (mPCMs) to improve the thermal inertia of building walls, and accordingly respective energy savings. The research presented below consists of the exhaustive characterization of different AACs formulated from some waste generated during the proper management of municipal waste used as precursor. In this case study, AACs were formulated with the waste generated during the recycling of glass cullet, namely ceramic, stone, and porcelain (CSP), which is embedding a mPCM. The addition of mPCM was used as thermal energy storage (TES) material. The mechanical properties were also evaluated in order to test the feasibility of the use of the new formulated materials as a passive TES system. The results showed that the AAC obtained from CSP (precursors) mixed with mPCMs to obtain a thermal regulator material to be implemented in building walls was reached successfully. The material developed was resistant enough to perform as insulating panels. The formulated materials had high storage capacity depending on the PCM content. The durability of the mPCM shell was studied in contact with alkaline medium (NaOH 4 M) and no degradation was confirmed. Moreover, the higher the content of mPCM, the lower the mechanical properties expected, due to the porosity increments with mPCM incorporation in the formulations.

scholarly journals Effect of Ground Slag on Mechanical Properties of Concrete under Low Temperature

2021 ◽  
Vol 2109 (1) ◽  
pp. 012019
Author(s):  
Xuelian Yuan ◽  
Jie Hu
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Compressive Strength ◽  
Low Temperature ◽  
Cement Paste ◽  
High Volume ◽  
Hardened Cement ◽  
Micro Structure ◽  
Hardened Cement Paste ◽  
Fracture Properties

Abstract Through using cube resisting compression test, fracture properties and micro-structure, the mechanical properties of high volume ground slag concrete under low temperature are studied in this paper. The results show that low temperature can improve the compressive strength of high volume ground slag concrete. And strength increased with the decreased of temperature. Low temperature can also improve the fracture energy and fracture toughness. Not only can ground slag reduce the content of calcium hydroxide in hardened cement paste, but ground slag can improve the compactness of hardened cement paste, reduce porosity and improve the strength of the interface.

scholarly journals A thermal energy storage composite by incorporating microencapsulated phase change material into wood

RSC Advances ◽  
2020 ◽  
Vol 10 (14) ◽  
pp. 8097-8103 ◽  
Author(s):  
Wenbin Wang ◽  
Huimin Cao ◽  
Jingyi Liu ◽  
Shifang Jia ◽  
Lin Ma ◽  
...  
Keyword(s):  
Energy Storage ◽  
Phase Change ◽  
Phase Change Material ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Phase Change Materials ◽  
Microencapsulated Phase Change Material ◽  
Microencapsulated Phase Change Materials ◽  
The Matrix ◽  
Change Material

Phase change energy storage wood (PCESW) was prepared by using microencapsulated phase change materials (MicroPCM) as thermal energy storage (TES) materials and wood as the matrix.

Innovative design of microencapsulated phase change materials for thermal energy storage and versatile applications: a review

2019 ◽  
Vol 3 (5) ◽  
pp. 1091-1149 ◽  
Author(s):  
Huan Liu ◽  
Xiaodong Wang ◽  
Dezhen Wu
Keyword(s):  
Energy Storage ◽  
Phase Change ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Phase Change Materials ◽  
Innovative Design ◽  
Microencapsulated Phase Change Materials

This review focuses on methodologies, technologies and innovative design of microencapsulated PCMs with a variety of shells for versatile applications.

The Influence of Pore-Strucrure on the Campressive Strength of Hardened Cement Paste

1984 ◽  
Vol 42 ◽  
Author(s):  
Huang Yiun-Yuan ◽  
Ding Wei ◽  
Lu Ping
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Pore Structure ◽  
Cement Paste ◽  
Total Porosity ◽  
Hardened Cement ◽  
Hardened Cement Paste ◽  
New Information ◽  
The Relationship ◽  
Empirical Constants

AbstractThe pore-structure strongly influences the carpressive strength of hardened cement paste (hcp) and other porous materials, as well as other mechanical properties. The simplest but most currently used expression representing the relationship between the pore-structure and compressive strength is fram Balshin: σ = σ0 (l-P)A, in which only the total porosity P is involved as a single parameter and σ0 and A are empirical constants. The influence of pore size distribution and pore shapes etc. are not considered.The authors introduce second parameter w - the factor of relative specific surface area of the pores other than the total porosity P into consideration and a new expression is proposed:σc=K11-p/1+2p(K2(1-p))K3w+K4 all the constants K1 - K4 can be determined experimentally. By using of this expression the new information relating the influence of pore-structure on the caopressive strength of hcp can be predicted.

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