Ultrasound Measurements for the Detection of Disintegration of Concrete Slabs Exposed to Fire

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F14%3APU112554" target="_blank" >RIV/00216305:26110/14:PU112554 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.4028/ISBN978-3-03835-452-9" target="_blank" >http://dx.doi.org/10.4028/ISBN978-3-03835-452-9</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/ISBN978-3-03835-452-9" target="_blank" >10.4028/ISBN978-3-03835-452-9</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Ultrasound Measurements for the Detection of Disintegration of Concrete Slabs Exposed to Fire

Popis výsledku v původním jazyce

The paper presents the application of ultrasound measurements for the determination of structural alterations of concrete exposed to fire. Concrete is evaluated as an incombustible material, class A1, but the high exposure temperature, like in fire, maycause cracks and changes of internal structure. The ultrasound measurement is a nondestructive method. It is possible to measure ultrasound velocity before and after thermal loading. The ultrasound measurement could be used also at building side as to detect structural alterations after a fire or imperfection in concrete elements. Three different concrete mixtures were prepared and tested in this study. The basalt aggregate were used in the reference mixture and in a mixture with addition of polypropylene fibers (PP-fibers). The third concrete was made with light weight aggregates (LWA). The test slabs (dimension 10 x 30 x 1150 mm) were poured and cured in laboratory ambient (22C and 40% RH) for 3 months. Then the slabs were exposed to

Název v anglickém jazyce

Ultrasound Measurements for the Detection of Disintegration of Concrete Slabs Exposed to Fire

Popis výsledku anglicky

The paper presents the application of ultrasound measurements for the determination of structural alterations of concrete exposed to fire. Concrete is evaluated as an incombustible material, class A1, but the high exposure temperature, like in fire, maycause cracks and changes of internal structure. The ultrasound measurement is a nondestructive method. It is possible to measure ultrasound velocity before and after thermal loading. The ultrasound measurement could be used also at building side as to detect structural alterations after a fire or imperfection in concrete elements. Three different concrete mixtures were prepared and tested in this study. The basalt aggregate were used in the reference mixture and in a mixture with addition of polypropylene fibers (PP-fibers). The third concrete was made with light weight aggregates (LWA). The test slabs (dimension 10 x 30 x 1150 mm) were poured and cured in laboratory ambient (22C and 40% RH) for 3 months. Then the slabs were exposed to

Druh

D - Stať ve sborníku

CEP obor

JN - Stavebnictví

OECD FORD obor

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Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název statě ve sborníku

Advanced Materials Research

ISBN

978-3-03835-452-9

ISSN

—

e-ISSN

—

Počet stran výsledku

4

Strana od-do

124-127

Název nakladatele

Trans Tech Publications

Místo vydání

Neuveden

Místo konání akce

Brno

Datum konání akce

4. 12. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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