Terra cruda e fibre vegetali: un sodalizio antico per la contemporaneità
MARIA MADDALENA ACHENZA;AMANDA RIVERA VIDAL
2023-01-01
Abstract
Earth and fibers mixed together have been main materials used to build all over the world for millennia. Wheat and rice straw, marsh reeds, rice husks, but also kenaf, coconut fiber, typha, are some of the fibers found in the most ancient archaeological sites in the different continents. It is evident that already in ancient times the mixture of the two materials found the right balance for the construction of building elements and mortars with which resistant and comfortable buildings were manufactured. The addition of fibers to earth allows the achievement of fundamental objectives: it can make the construction elements mechanically more resistant, or more elastic, and therefore limit the damage caused to buildings by seismic events even of high intensity, reduces the phenomena of superficial cracking in thin layers (plasters and mortars) and in masonry blocks (adobe), facilitates the manufacture of building elements with predominantly clayey and silty soils otherwise difficult to work. Finally, a mixture of earth rich in fibers significantly increases the thermal insulation capacity of buildings, as testified by countless historic buildings still in excellent condition. This last aspect relating to the questions related to thermal insulation is at the center of a research that for several years has been coordinated by DICAAR in order to deepen the study of earth-fiber mixtures for the production of infill and insulating elements, with simultaneous attention. towards natural and sustainable construction, the circular economy, and aimed at a limited energy consumption.File | Size | Format | |
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