Journal article
The potential use of chitosan as a biopolymer additive for enhanced mechanical properties and water resistance of earthen construction
Construction & building materials, v 114, pp 625-637
01 Jul 2016
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
•Chitosan successfully improved the engineering behavior of earthen construction.•Coating with 0.5% chitosan solution protected earthen materials from water erosion.•Earthen material with 1%–3% chitosan admixture had high water erosion resistance.•Samples with 3% chitosan admixture showed improved mechanical properties.
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.
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Details
- Title
- The potential use of chitosan as a biopolymer additive for enhanced mechanical properties and water resistance of earthen construction
- Creators
- Rafael Aguilar - Department of Engineering, Civil Engineering Division, Pontificia Universidad Católica del Perú PUCP, Av. Universitaria 1801, San Miguel, Lima 32, PeruJavier Nakamatsu - Pontificia Universidad Católica del PerúEduardo Ramírez - Pontificia Universidad Católica del PerúMariela Elgegren - Pontificia Universidad Católica del PerúJorge Ayarza - Pontificia Universidad Católica del PerúSuyeon Kim - Department of Engineering, Pontificia Universidad Católica del Perú PUCP, Av. Universitaria 1801, San Miguel, Lima 32, PeruMiguel A. Pando - University of North Carolina at CharlotteLuis Ortega-San-Martin - Pontificia Universidad Católica del Perú
- Publication Details
- Construction & building materials, v 114, pp 625-637
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering
- Web of Science ID
- WOS:000376696600067
- Scopus ID
- 2-s2.0-84962808954
- Other Identifier
- 991020574981304721
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InCites Highlights
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Construction & Building Technology
- Engineering, Civil
- Materials Science, Multidisciplinary