Changes of the Dynamic Modulus of Elasticity in Dependence on the Number of the Freeze-Thaw Cycles
Result description
The paper presents the determination of the modulus of elasticity on gypsum samples using the nondestructive impulse excitation method. The great advantage of non-destructive testing, compared to destructive, is that still the same sample is tested and it excludes various negative effects. The paper presents the development of modulus of elasticity on gypsum samples according to the number of freeze-thaw cycles. For cyclic loading, the samples were saturated with water at 20 °C and tested in 8-hour cycles. Samples were removed from the water bath and placed in a freezer with a temperature lower than -20 °C and after 8 hours they were placed again in the water bath for a period of eight hours. The difference from 'dry' frost resistance was that the samples of hardened plaster were exposed to "wet" frost resistance, i.e. to the extreme load of the samples with the external climatic conditions.
Keywords
GypsumModulus of elasticityImpulse excitation methodFreeze-thaw cycles
The result's identifiers
Result code in IS VaVaI
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Changes of the Dynamic Modulus of Elasticity in Dependence on the Number of the Freeze-Thaw Cycles
Original language description
The paper presents the determination of the modulus of elasticity on gypsum samples using the nondestructive impulse excitation method. The great advantage of non-destructive testing, compared to destructive, is that still the same sample is tested and it excludes various negative effects. The paper presents the development of modulus of elasticity on gypsum samples according to the number of freeze-thaw cycles. For cyclic loading, the samples were saturated with water at 20 °C and tested in 8-hour cycles. Samples were removed from the water bath and placed in a freezer with a temperature lower than -20 °C and after 8 hours they were placed again in the water bath for a period of eight hours. The difference from 'dry' frost resistance was that the samples of hardened plaster were exposed to "wet" frost resistance, i.e. to the extreme load of the samples with the external climatic conditions.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
JM - Structural engineering
OECD FORD branch
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Result continuities
Project
TE01020168: Centre for Effective and Sustainable Transport Infrastructure (CESTI)
Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Proceedings of the 4th Conference Nano & Macro Mechanics
ISBN
978-80-01-05332-4
ISSN
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e-ISSN
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Number of pages
4
Pages from-to
211-214
Publisher name
Czech Technical University in Prague
Place of publication
Praha
Event location
Prague
Event date
Sep 19, 2013
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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Basic information
Result type
D - Article in proceedings
CEP
JM - Structural engineering
Year of implementation
2013