Prague's Winter Climatic Conditions - A Case Study of Sandstone Weathering

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F12%3A00201555" target="_blank" >RIV/68407700:21110/12:00201555 - isvavai.cz</a>

Result on the web

<a href="http://sgem.org/sgemlib/spip.php?article1836" target="_blank" >http://sgem.org/sgemlib/spip.php?article1836</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5593/SGEM2012/S01.V1030" target="_blank" >10.5593/SGEM2012/S01.V1030</a>

Result language

angličtina

Original language name

Prague's Winter Climatic Conditions - A Case Study of Sandstone Weathering

Original language description

Weathering processes lead to deterioration of dimension stones and to changes in their durability. The range of the deterioration depends on petrography, including internal structure, mineral and matrix composition, and also changes initiated. The stone's properties are negatively influenced especially during the winter frost period. The presence of salt can exacerbate this process. The Czech national standardized testing methods for natural stone, such as determination of frost resistance and determination of resistance to salt crystallisation, may not take into consideration the actual conditions in the stone's locality. This paper is focused on the description of an alternative procedure of stone durability determination and on the evaluation of induced changes. To simulate the weathering processes typical in Prague's winter climatic conditions, seasonal data from 1999 to 2008 were statistically analyzed. Samples of snow/water mixtures from Prague city centre were chemically analyzed to determine the average NaCl concentration. Three Cretaceous sandstones - Božanov, Hořice and Kocbeře - were tested during this experiment. Developed changes in the internal structure were studied using Hg porosimetry. Physical-mechanical properties, such as water absorption at atmospheric pressure, uniaxial compressive strength, apparent density and open porosity, were also studied.

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JN - Civil engineering

OECD FORD branch

—

Project

<a href="/en/project/DF12P01OVV020" target="_blank" >DF12P01OVV020: A comprehensive methodology for the selection and processing of a stone intended for replacements and repairs of the ashlar masonry of historic buildings</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2012

Confidentiality

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

Name of the periodical

12th International Multidisciplinary Scientific GeoConference SGEM 2012, Conference Proceedings

ISSN

1314-2704

e-ISSN

—

Volume of the periodical

—

Issue of the periodical within the volume

—

Country of publishing house

BG - BULGARIA

Number of pages

6

Pages from-to

265-270

UT code for WoS article

—

EID of the result in the Scopus database

—