Salt Effects in Plastered and Unplastered Outdoors Brick Masonry: Quantitative Laser Monitoring of Surface Decay Evolution

摘要: In masonry materials, the superficial decay is a widespread problem. Aggressive environmental agents such as moisture and salts trigger damage by propagating through material capillary pores. Although several studies have been carried out on salt crystallization their damaging effects, additional research effort required to better investigate this phenomenon real cases weathering conditions. To purpose, testing monitoring tools capable of following degradation process since early beginning are necessary. Repeated visual inspections commonly used monitor decay, but technique subjective thus not providing any quantitative information. work, an experimental campaign, in Bologna, Italy, presented. A two-header brick wall, one main face unplastered plastered, was stored outdoors exposed over two summers. Before start second aging season, r...