Bioreceptivity of different painting systems to mould growth on "tabique" walls and plasterboards

IF 0.4 0 HUMANITIES, MULTIDISCIPLINARY
R. Almeida, E. Barreira, Elisabete Silva, I. Brás, Ana Rocha
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引用次数: 0

Abstract

Mould growth on the inner surfaces of building elements is a common pathology found in buildings, resulting not only in the early degradation of the materials but also in the deterioration of the indoor environment. On the other hand, building renovation provides an exceptional opportunity to improve the quality of life of its users. Within this scope it is therefore relevant to understand the effect that different painting solutions may have on mould growth. This work evaluated the mould growth in four kinds of substrates, with different painting systems. The selected case studies were: two "tabique" walls (constructive solution with strong implantation in the built heritage), one with lime mortar and another with lime and cement mortar; and two gypsum plasterboards (a constructive solution that is widely applied in building renovation), a normal and a water repellent. To evaluate the mould growth, two methodologies were adopted: counting the number of colony forming units (CFU) in six sampling periods; and visual inspection through photographic recording, including the quantification of the percentage of "dark pixels". At the end of the test it was established that plasterboard was more favourable to mould growth when compared to "tabique" walls. Moreover, the roughness of the substrates and the sampling location had also significant impact on the results.
不同涂装系统对“禁忌”墙和石膏板霉菌生长的生物接受性
建筑构件内表面的霉菌生长是建筑中常见的病理现象,不仅会导致材料的早期退化,还会导致室内环境的恶化。另一方面,建筑翻新为提高用户的生活质量提供了一个特殊的机会。因此,在这个范围内,了解不同的涂装解决方案可能对霉菌生长产生的影响是相关的。本工作评估了四种不同涂装系统的基质中霉菌的生长情况。选定的案例研究是:两堵“禁忌”墙(在建筑遗产中强烈植入的建设性解决方案),一堵用石灰砂浆,另一堵用水泥砂浆;和两块石膏板(一种广泛应用于建筑翻新的建筑解决方案),一块普通石膏板和一块防水石膏板。为了评估霉菌的生长,采用了两种方法:在六个采样周期内计数菌落形成单位(CFU)的数量;通过照相记录进行目视检查,包括量化“暗像素”的百分比。在测试结束时,确定与“禁忌”墙相比,石膏板更有利于霉菌生长。此外,基底的粗糙度和采样位置也对结果产生了显著影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Conservar Patrimonio
Conservar Patrimonio HUMANITIES, MULTIDISCIPLINARY-
CiteScore
0.80
自引率
0.00%
发文量
5
审稿时长
12 weeks
期刊介绍: Conservar Património is a journal, published three times a year, that intends to create a space for the diffusion of conservator-restorers’ studies and activities. However, at a time when Conservation-Restoration pretends to develop further through collaboration with other areas of knowledge, such as History of Art, Archaeology, Museum Studies, Chemistry, Physics, Biology and other related disciplines from the fields of the natural and social sciences, the journal also receives contributions from any other provenance as long as directed towards the multiple dimensions of the works that integrate our Cultural Heritage. Theoretical issues on the conservation activity may also be submitted.
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