Improvement of ternary gypsum-based composite resistance to a humid environment

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F20%3A00345273" target="_blank" >RIV/68407700:21110/20:00345273 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21610/20:00345273

Výsledek na webu

<a href="https://doi.org/10.1088/1757-899X/770/1/012001" target="_blank" >https://doi.org/10.1088/1757-899X/770/1/012001</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1757-899X/770/1/012001" target="_blank" >10.1088/1757-899X/770/1/012001</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Improvement of ternary gypsum-based composite resistance to a humid environment

Popis výsledku v původním jazyce

The paper describes the behavior of ternary gypsum-based composites, especially the changes of properties caused by the influence of moisture. The ternary gypsum-based mortar, composed of gypsum, hydrated lime, different types of pozzolan (silica fume, granular blast slag, and brick powder), and standard sand was investigated. Pozzolans in the mixture react with hydraulic lime and form CSH phases in the material. The presence of these phases improves the resistance of gypsum against the moisture. The way of samples' storage affects the development of materials structure and properties of gypsum-based mortars. Therefore, samples were stored in two different environments (laboratory conditions and underwater) for a period of 360 days. The basic physical and mechanical properties of samples stored in the laboratory environment and under the water are compared. The comparison of the TG curves, based on the samples of different ages was carried out. The storage in the water has the most significant impact on the properties of all materials, especially on mechanical properties. While the strength of pure gypsum mortar, stored in the water, decreased significantly, and after one year in the water environment, the samples were nearly destroyed, the samples with pozzolan admixtures revealed the improvement of mechanical properties, when stored in water.

Název v anglickém jazyce

Improvement of ternary gypsum-based composite resistance to a humid environment

Popis výsledku anglicky

The paper describes the behavior of ternary gypsum-based composites, especially the changes of properties caused by the influence of moisture. The ternary gypsum-based mortar, composed of gypsum, hydrated lime, different types of pozzolan (silica fume, granular blast slag, and brick powder), and standard sand was investigated. Pozzolans in the mixture react with hydraulic lime and form CSH phases in the material. The presence of these phases improves the resistance of gypsum against the moisture. The way of samples' storage affects the development of materials structure and properties of gypsum-based mortars. Therefore, samples were stored in two different environments (laboratory conditions and underwater) for a period of 360 days. The basic physical and mechanical properties of samples stored in the laboratory environment and under the water are compared. The comparison of the TG curves, based on the samples of different ages was carried out. The storage in the water has the most significant impact on the properties of all materials, especially on mechanical properties. While the strength of pure gypsum mortar, stored in the water, decreased significantly, and after one year in the water environment, the samples were nearly destroyed, the samples with pozzolan admixtures revealed the improvement of mechanical properties, when stored in water.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA16-01438S" target="_blank" >GA16-01438S: Použití ternárních pojiv na bázi sádry v kompozitních materiálech</a><br>

Návaznosti

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

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název statě ve sborníku

8th Global Conference on Materials Science and Engineering (CMSE2019)

ISBN

—

ISSN

1757-8981

e-ISSN

1757-899X

Počet stran výsledku

7

Strana od-do

—

Název nakladatele

IOP Publishing Ltd

Místo vydání

Bristol

Místo konání akce

Sanya

Datum konání akce

12. 11. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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