Materiales de Construcción, Vol 67, No 328 (2017)

Impact of using lightweight eco-bricks as enclosures for individual houses of one story on zones of high seismicity

D. Dominguez
Facultad de Ingeniería. Universidad Talca, Chile

V. P. Muñoz
Facultad de Ingeniería. Universidad Autónoma de Chile, Chile

V. L. Muñoz
Universidad Internacional de La Rioja, Spain


Fired clay bricks are widely developed by focusing on the use of several wastes with the aim of obtaining lightweight materials. Despite research having provided positives experiences, most of these showed an important reduction of compression strength. This issue must be highlighted in particular, when seismic areas are considered. However, despite compression strength decreases in some cases the energy that can be absorbed by the brick might be increased. Hence, this paper tests and shows physical and mechanical properties of newly fired clays made by adding different percentages of sawdust. Results are used for calculating the response of an individual one-story house to medium intensity earthquakes. It is concluded that the use of bricks, with up to 5% sawdust added, is an ecological way for recycling these agro-wastes, while its behaviour against earthquakes performs better than other solutions, such as common perforated bricks.


Fired Clay Brick; Organic Admixture; Mechanical properties; Earthquake; Modelization; Method of finite elements

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