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arXiv 0906.2502cond-mat.softcond-mat.mtrl-sci
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多孔介质中盐的结晶损伤

Damage due to salt crystallization in porous media

Noushine Shahidzadeh Bonn, Francois Bertrand, Daniel Bonn

摘要:

我们研究盐结晶在多孔介质中,可以导致其解体。对于硫酸钠,我们第一次实验表明,当无水晶体用水润湿时,在无水盐微晶上成核的簇中硫酸盐的水合形式非常快速地生长。水合晶体的摩尔体积是四倍大,这些簇的生长可以产生超过石头的拉伸强度的应力,因此导致损坏。

英文摘要:

We investigate salt crystallization in porous media that can lead to their disintegration. For sodium sulfate we show for the first time experimentally that when anhydrous crystals are wetted with water, there is very rapid growth of the hydrated form of sulfate in clusters that nucleate on anhydrous salt micro crystals. The molar volume of the hydrated crystals being four times bigger, the growth of these clusters can generate stresses in excess of the tensile strength of the stone and lead therefore to damage.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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