Gypsum efflorescence on clay brick masonry: Field survey and literature study
Gypsum efflorescence on clay brick masonry: Field survey and literature study
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DOI：
10.1016/j.conbuildmat.2015.02.094
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发表时间：
2014-09
期刊：
影响因子：
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通讯作者：
Jacek Chwast;J. Todorovic;H. Janssen;J. Elsen
中科院分区：
文献类型：
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作者：
Jacek Chwast;J. Todorovic;H. Janssen;J. Elsen
比利时砖石外墙越来越受到难看的持续开花的影响。这导致顾客失望，从而对砖业造成威胁。本文对该课题进行了实地调查和文献综述。对比利时案例的调查显示，该矿床中石膏丰富。具体特征和文献综述表明砌体是其来源，水分传递是其传输机制。然而，目前还没有合理的解释表面上的石膏结晶和它最近才出现。一种假设指向砂浆添加剂，它可能影响石膏的运输和结晶。
Belgian masonry facades are being increasingly affected by unsightly persistent efflorescence. This results in disappointed customers and consequently creates a threat for the brick industry. Our paper presents a field survey and literature review on the topic. An investigation of Belgian cases reveals gypsum abundance in the deposit. The specific characteristics and literature review indicate masonry as the source and moisture transfer as the transport mechanism. However, there is currently no sound explanation for the crystallisation of gypsum on the surface and its only recent occurrence. One hypothesis points at mortar additives, which may affect the transport and crystallisation of gypsum.