CHANGES OF CONCRETE CHEMICAL COMPOSITION DUE TO THERMAL LOADING DETECTED BY DTA ANALYSIS

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F15%3APU115733" target="_blank" >RIV/00216305:26110/15:PU115733 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

CHANGES OF CONCRETE CHEMICAL COMPOSITION DUE TO THERMAL LOADING DETECTED BY DTA ANALYSIS

Popis výsledku v původním jazyce

The new types of concrete for example high performance concrete (HPC) have higher compressive strength and durability thanks to their lower porosity and denser microstructure. In case of fire the low amount of pores may cause explosive spalling, which can lead to collapse of the entire construction. Besides porosity, there are several other factors and effects which contribute to the formation of explosive spalling. The determining effect seems to be the evaporation of chemically or physically bound water, which is accompanied by volume changes of the CSH phases and gel particles. One of the methods used to gather knowledge concerning changes of chemical components of concrete is the differential thermal analysis (DTA). In this study basic informationabout chemical changes and liberation respectively desorption of water in the microstructure of high strength concrete is given. The obtained knowledge leads to better understanding of the basics of explosive spalling and crack formation

Název v anglickém jazyce

CHANGES OF CONCRETE CHEMICAL COMPOSITION DUE TO THERMAL LOADING DETECTED BY DTA ANALYSIS

Popis výsledku anglicky

The new types of concrete for example high performance concrete (HPC) have higher compressive strength and durability thanks to their lower porosity and denser microstructure. In case of fire the low amount of pores may cause explosive spalling, which can lead to collapse of the entire construction. Besides porosity, there are several other factors and effects which contribute to the formation of explosive spalling. The determining effect seems to be the evaporation of chemically or physically bound water, which is accompanied by volume changes of the CSH phases and gel particles. One of the methods used to gather knowledge concerning changes of chemical components of concrete is the differential thermal analysis (DTA). In this study basic informationabout chemical changes and liberation respectively desorption of water in the microstructure of high strength concrete is given. The obtained knowledge leads to better understanding of the basics of explosive spalling and crack formation

Druh

D - Stať ve sborníku

CEP obor

JN - Stavebnictví

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název statě ve sborníku

4th International Workshop on Concrete Spalling due to Fire Exposure

ISBN

978-3-9814523-6-5

ISSN

—

e-ISSN

—

Počet stran výsledku

9

Strana od-do

32-40

Název nakladatele

MFPA Leipzig GmbH

Místo vydání

Leipzig, Germany

Místo konání akce

Leipzig

Datum konání akce

8. 10. 2015

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—