Open AccessAssessment of natural aging and ecological surface treatments in earth renders
Author(s) -
Tânia Gaspar Sintra dos Santos,
Ricardo Gomes
Publication year - 2020
Publication title -
conservar património/conservar património
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.229
H-Index - 6
eISSN - 2182-9942
pISSN - 1646-043X
DOI - 10.14568/cp2019005
Subject(s) - durability , natural materials , masonry , natural (archaeology) , earth (classical element) , environmental science , adobe , rammed earth , geotechnical engineering , engineering , materials science , civil engineering , geology , composite material , mathematics , paleontology , polymer science , mathematical physics
In conservation, earth renders can be used as sacrificial coatings. However, earth presents vulnerability when in contact with water. The application of ecological surface treatments on earth renders can be of great relevance, ensuring their durability while increasing eco-efficiency and extending its range of applications. The behaviour of a ready-mixed earth render applied in situ, on adobe and concrete block masonry experimental walls exposed outdoors with protection, and under controlled laboratory conditions, on hollow bricks, was evaluated after four years. Several superficial treatments were applied on the renders: linseed oil, mucilage of aloe vera and pasta and rice cooking water. The renders were characterized by non-destructive tests. The surface treatment with linseed oil presents good results and improves the durability of the earth render, giving it adequate protection against natural degradation.