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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Methodology for determining the durability of concrete and its resistance to frost and chemical deicing salts
 Chaloupková, Kristýna ; Novosad, Petr (referee) ; Hubáček, Adam (advisor)
The bachelor's thesis explores the possibilities of improving testing procedures for determining the resistance of concrete to frost and chemical deicing salts. Currently used testing methods are notably problematic in terms of their repeatability and reproducibility. These tests are influenced by several factors, including the method of sample storage prior to testing, the preparation of the test surface, and the significant impact of edge effects. Additionally, the raw materials used in the test solution also affect the outcomes. During the test, water condensation occurs in the freezing chamber, altering the concentration and level of the test solution.
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Methods of assessing the durability of concrete against frost and chemical deicing salts in the Czech Republic and in Europe
 Žíla, František ; Novosad,, Petr (referee) ; Hubáček, Adam (advisor)
The bachelor thesis deals with the methods of assessing the durability of concretes against frost and chemical deicing salts used in the Czech Republic and Europe. The theoretical part of the thesis describes the basic properties of concrete, the classes of environmental influence, the theory of concrete failure by cyclic freezing and thawing, methods for assessing the durability of concrete against freezing and methods for assessing the durability against water and chemical deicing salts, as well as properties affecting the repeatability and reproducibility of tests. The practical part focuses on testing the resistance of concrete to the action of freezing and chemical thawing agents using the methods according to the standards ČSN 73 1322 and ČSN 73 1326 and also on the influence of concrete surface treatment on the process and result of these tests.
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