Mechanical and microstructure development of portland cement modified with micro-encapsulated phase change materials

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27690%2F21%3A10249171" target="_blank" >RIV/61989100:27690/21:10249171 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0950061821024077" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0950061821024077</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.conbuildmat.2021.124652" target="_blank" >10.1016/j.conbuildmat.2021.124652</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Mechanical and microstructure development of portland cement modified with micro-encapsulated phase change materials

Popis výsledku v původním jazyce

This paper investigates the mechanical and microstructure development of cement based materials containing different size of micro-encapsulated phase change materials (nano-MPCM and micro-MPCM). Thermogravimetric analysis (TGA) was used to analyze the effect of MPCM on the hydration products of hardened pastes. Scanning electron microscope (SEM) was performed to investigate the physicochemical stability of MPCM and microstructure of specimens. Mercury intrusion porosimetry (MIP) was employed to measure the pore structure at different curing age. According to the test results, both nano-MPCM and micro-MPCM can improve the compressive strength of thermal storage cement-based materials. While the compressive strength of specimens containing micro-MPCM was lower than specimens containing nano-MPCM. The production of C-S-H gel, calcium hydroxide and other products were increased as the MPCM incorporated. Both nano-MPCM and microMPCM had good physical stability in mixing process and good chemical stability in service process. With the increase of capsule dosage, the mean pore size and pore volume of the specimens decreased first and then increased.

Název v anglickém jazyce

Mechanical and microstructure development of portland cement modified with micro-encapsulated phase change materials

Popis výsledku anglicky

This paper investigates the mechanical and microstructure development of cement based materials containing different size of micro-encapsulated phase change materials (nano-MPCM and micro-MPCM). Thermogravimetric analysis (TGA) was used to analyze the effect of MPCM on the hydration products of hardened pastes. Scanning electron microscope (SEM) was performed to investigate the physicochemical stability of MPCM and microstructure of specimens. Mercury intrusion porosimetry (MIP) was employed to measure the pore structure at different curing age. According to the test results, both nano-MPCM and micro-MPCM can improve the compressive strength of thermal storage cement-based materials. While the compressive strength of specimens containing micro-MPCM was lower than specimens containing nano-MPCM. The production of C-S-H gel, calcium hydroxide and other products were increased as the MPCM incorporated. Both nano-MPCM and microMPCM had good physical stability in mixing process and good chemical stability in service process. With the increase of capsule dosage, the mean pore size and pore volume of the specimens decreased first and then increased.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20100 - Civil engineering

Projekt

<a href="/cs/project/EF17_048%2F0007373" target="_blank" >EF17_048/0007373: Predikce poškození konstrukčních materiálů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Construction and Building Materials

ISSN

0950-0618

e-ISSN

—

Svazek periodika

304

Číslo periodika v rámci svazku

18.10.2021

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

—

Kód UT WoS článku

000696907600002

EID výsledku v databázi Scopus

—