Influence of the Maximum Aggregate Grain Size on the Modulus of Elasticity and on the Parameters of the Acoustic Emission of Concrete Exposed to High Temperatures

Libor Topolář; Dalibor Kocáb; Michaela Hoduláková; Romana Halamová

doi:10.4028/www.scientific.net/SSP.276.134

Paper Titles

The Suitability of Fly Ash for Use in Concrete According to EN 450 Based on their Particle Size
p.110

Effect of Hardening Accelerators and other Chemical Admixtures on the Properties of a Quick-Setting Mixture
p.116

Decorative Coating Based on Composite Cement-Silicate Matrix
p.122

Nonlinear Acoustic Spectroscopy Method for Nondestructive Testing of Thermally Damaged Concrete
p.128

Influence of the Maximum Aggregate Grain Size on the Modulus of Elasticity and on the Parameters of the Acoustic Emission of Concrete Exposed to High Temperatures
p.134

High Strain Rate Compressive Behavior of Micro-Fibre Reinforced Fine Grained Cementitious Composite
p.140

Effect of Ammonium Ion Content in Fly Ash after Selective Non-Catalytic Reduction (SNCR) on Physical and Mechanical Properties of Autoclaved Aerated Concrete (AAC)
p.148

Physical Properties of Selected Silicates for a Long-Term Heat Container
p.154

Special Grout for Anchoring Steel Elements with High Proportion of Fly Ash Contaminated by Denitrification Process
p.160

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Influence of the Maximum Aggregate Grain Size on the Modulus of Elasticity and on the Parameters of the Acoustic Emission of Concrete Exposed to High Temperatures

Abstract:

Several very large and tragic fires of buildings have occurred recently, drawing attention to the issues of fire resistance of buildings (especially high-rise buildings and tunnels) and of building materials. For cement-based composites, it is essential to comprehensively understand the behaviour of their internal structures when exposed to high temperatures. This paper deals with the changes of the physical properties of concrete with different aggregate grain sizes when exposed to high temperatures. The emphasis is placed on the changes of the static and dynamic modulus of elasticity as an important parameter in assessing the behaviour of structures or their parts. During the test of the static modulus of elasticity, the acoustic emission method was also used as its results may reveal the behaviour of the internal structure of the material during mechanical loading.

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Periodical:

Solid State Phenomena (Volume 276)

Pages:

134-139

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.276.134

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Online since:

June 2018

Authors:

Libor Topolář*, Dalibor Kocáb, Michaela Hoduláková, Romana Halamová

Keywords:

Acoustic Emission Method, Concrete Exposed to High Temperatures, Static Bending Modulus Of Elasticity

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