Effect of Keratin Structures from Chicken Feathers on Expansive Soil Remediation
Por:
Montes-Zarazúa E., Colín-Cruz A., PerezRea, MD, De Icaza M., Velasco-Santos C., Martínez-Hernández A.L.
Publicada:
1 ene 2015
Resumen:
Chicken feathers are composed mainly of avian keratin, a fibrillar
protein with a complex structure, and important properties such as
durability, hydrophobicity, being chemically unreactive, and depending
on the specific function can change its morphological and inner
structure. This study takes advantage of these features and for the
first time the use of keratin from chicken feathers to modify
characteristics on expansive soils is reported. Swelling characteristics
of remolded expansive soil specimens were studied through varying the
percentage of keratin fiber content using 0.25, 0.50, 1.00 and 3.00
wt%. One-dimensional swell-consolidation tests were conducted on
oedometric specimens, specific surface area was determined using
methylene blue, and degree of saturation was also analyzed. Finally
random distribution and interaction between keratin structures and soil
were studied by scanning electron microscopy. The results show that
randomly distributed fibers are useful in restraining the swelling
tendency of expansive soils. The maximum reduction of pressure (43.99%)
due to swelling is achieved by reducing the void ratio, which can be
reached with the addition of chicken feather keratin structures to the
expansive soil. Finally, the mechanism by which discrete and randomly
distributed fibers reduce swelling pressure of expansive soil is
explained.
Filiaciones:
Montes-Zarazúa E.:
Posgrado en Ciencias Ambientales, Facultad de Química, Universidad Autónoma Del Estado de México, Paseo Colón Esquina Paseo Tollocan, Toluca, 50120, Mexico
Colín-Cruz A.:
Posgrado en Ciencias Ambientales, Facultad de Química, Universidad Autónoma Del Estado de México, Paseo Colón Esquina Paseo Tollocan, Toluca, 50120, Mexico
De Icaza M.:
Univ Nacl Autonoma Mexico, Ctr Fis Aplicada & Tecnol Avanzada, Queretaro 76000, Qro, Mexico
Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Apartado Postal 1-1010, Querétaro, QRO, 76000, Mexico
Velasco-Santos C.:
Univ Nacl Autonoma Mexico, Ctr Fis Aplicada & Tecnol Avanzada, Queretaro 76000, Qro, Mexico
Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Apartado Postal 1-1010, Querétaro, QRO, 76000, Mexico
División de Estudios de Posgrado e Investigación, Instituto Tecnológico de Querétaro, Colonia Centro Histórico, Avenida Tecnologico s/n Esquina Gral. Mariano Escobedo, Querétaro, QRO, 76000, Mexico
Martínez-Hernández A.L.:
Univ Nacl Autonoma Mexico, Ctr Fis Aplicada & Tecnol Avanzada, Queretaro 76000, Qro, Mexico
Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Apartado Postal 1-1010, Querétaro, QRO, 76000, Mexico
División de Estudios de Posgrado e Investigación, Instituto Tecnológico de Querétaro, Colonia Centro Histórico, Avenida Tecnologico s/n Esquina Gral. Mariano Escobedo, Querétaro, QRO, 76000, Mexico
Facultad de Ingeniería, Universidad Autónoma de Querétaro, Centro Universitario, Cerro de Las Campanas, Querétaro, QRO, 76160, Mexico
Gold
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