000			01917nam a22002537a 4500
003			ZW-GwMSU
005			20230227113743.0
008			230227b |||||||| |||| 00| 0 eng d
040			_aMSU _cMSU _erda
100			_aMARZAL - ESPINOSA, Rosa M
245			_aImpact of in-pore salt crystallization on transport properties
264			_aVerlag _bSpringer _c2013
336			_2rdacontent _atext _btxt
337			_2rdamedia _aunmediated _bn
338			_2rdacarrier _avolume _bnc
440			_aEnvironmental earth science _vVolume , number ,
520			_aPrecipitation of salts in confined spaces is the key mechanism for rock weathering and damage to building materials. To date there is no comprehensive study of the parameters influencing the reduction of pore space by salt crystals and the consequences for transport and damage by crystallization pressure. A novel method is presented to quantify pore clogging (i.e., the degree to which crystallization of salts interferes with transport of solution in porous materials). After drying capillary-saturated stone specimens containing salt solutions, the rate of capillary uptake of decane into the salt-contaminated specimens is measured. By treating the salt-contaminated material as a bilayer, the width of the crystallization front and the degree of pore filling can be determined. Two model materials with different pore size distributions (Indiana and Highmoor limestone) and three salts (sodium chloride, sodium sulfate and magnesium sulfate) are selected for this study. It is shown that pore clogging results from the interplay between pore size distribution and salt properties. Different scenarios are discussed to link pore clogging with salt damage.
650			_asalt weathering
650			_aore clogging
650			_acrystallization
700			_aSCHERER, George W.
856			_uhttps://doi.org/10.1007/s12665-012-2087-z
942			_2lcc _cJA
999			_c160950 _d160950