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Browsing by Subject "crystallization pressure"

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  • thumbnail.journal.alt
    Item type:Thesis, Access status: Restricted ,
    Zmiany własności fizyczno-mechanicznych wybranych piaskowców Gór Świętokrzyskich wywołane ciśnieniem krystalizacyjnym soli w warunkach określonych normą PN-EN 12370:2001
    (Data obrony: 2012-09-28) Ochab, Bartłomiej
    Wydział Geologii, Geofizyki i Ochrony Środowiska
    Objective of the study was denotation of influence salt crystallization pressure for mechanical and physical properties sandstones extracted In the area of Świętokrzyskie Mountains. In this disquisition defined resistance of sandstones used in construction industry to salt crystallization according to PN-EN 12370. Researches proven that size of porosity has no impact for sandstone resistance and the main purpose of their decay are tenses caused by crystallization of sodium sulfate (mirabilite). Microscopic observations prove, that certain type and disposal of binder in stone have main impact on salt crystallization resistance. It was found that Triassic sandstones from “Kopulak” and “Tumlin-Grod” motherlodes are the most resistant to salt crystallization. Jurassic sandstones from “Śmiłow II” motherlode was found less resistant and sandstones from area of Szydłowice was found completely non-resistant to salt crystallization (samples decay occurred).