Publicación:
The potential use of chitosan as a biopolymer additive for enhanced mechanical properties and water resistance of earthen construction
The potential use of chitosan as a biopolymer additive for enhanced mechanical properties and water resistance of earthen construction
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Fecha
2016
Autores
Aguilar R.
Nakamatsu J.
Ramírez E.
Elgegren M.
Ayarza J.
Kim S.
Pando M.A.
Ortega-San-Martin L.
Título de la revista
Revista ISSN
Título del volumen
Editor
Elsevier
Proyectos de investigación
Unidades organizativas
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Abstracto
The study investigates the feasibility of using chitosan biopolymer as an admixture, or as an external coating, for earthen constructions to improve their resistance in two components: water induced degradation and key mechanical properties. The resistance to water induced degradation was evaluated in terms of contact angle and drip erosion tests, while the influence on mechanical properties was measured through compressive, tensile and three-point bending tests. The results indicate that the use of low concentrations of chitosan can improve significantly the performance in the two components and therefore was found to be a promising treatment for new or existing construction.
Descripción
Palabras clave
Water-resistances,
Bending tests,
Biomolecules,
Chitosan,
Mechanical properties,
Strength of materials,
Earthen constructions,
Erosion test,
Low concentrations,
Material modifications,
Three-point bending test,
Two-component,
Water-induced,
Chitin