Plaster adhesion variability on lightened earth panels with formwork according to different types of grip layer
DOI:
https://doi.org/10.3989/ic.6211Keywords:
Coating, direct pull-off, shearing, durabilityAbstract
Earthen plasters are the final layers of constructions with earth and their main function is to protect it from the weathering. In formwork light earth walls, differential adhesions are generated where the wood of the structure is exposed. Possible cracks and detachments can affect the protection of the walls and their durability. This research proposes grip layers prior to thick plasters on exposed wood, and evaluates adhesion through direct pull-out and shear tests. The tests confirmed that the compatibility of the wall, grip layers, and thick plasters is given by the similarity in the component materials, such as earth, sand and fibers, which improves mechanical adhesion. For direct pull-out the highest value was 0.07 N / mm², and for shear 0.08 N / mm².
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