INTECIN 20395
INSTITUTO DE TECNOLOGIAS Y CIENCIAS DE LA INGENIERIA "HILARIO FERNANDEZ LONG"
Unidad Ejecutora - UE
artículos
Título:
Flexural properties loss of unidirectional epoxy/fique composites immersed in water and alkaline medium for construction application
Autor/es:
CATALINA GÓMEZ HOYOS; ANALIA VÁZQUEZ, PH D
Revista:
COMPOSITES PART B-ENGINEERING
Editorial:
ELSEVIER SCI LTD
Referencias:
Lugar: Amsterdam; Año: 2012
ISSN:
1359-8368
Resumen:
Epoxy fique composites were evaluated for construction applications and compared with conventional
wood used in construction. The composites studied were made with fique fibers treated using Na(OH)
solution at 18 w/v%, untreated fique fibers were also used. The matrices were epoxy and epoxy with
5 wt.% of chemically modified C30B montmorillonite. Unidirectional composites of 90 mm 20 mm
4 mm were elaborated by pultrusion processing technique. The flexural properties loss occurred over
20 days of composites submitted to three types of environments: (i) water, (ii) saturated calcium hydroxide
solution and (iii) mortar with w/c ratio of 0.45 and 540 kg/m3 of cement, cured in a saturated solution
of lime stone at 50 C. Results showed that fiber treatment and montmorillonite addition improved the
flexural modulus and strength of composites in 40% and 34% respectively. Moreover the flexural properties
of composites before and after ageing resulted comparable or even better than conventional wood
used in construction.
