[en] This experimental study analyzes the seismic behavior of rammed earth walls with Arundo donax natural fiber inclusions, also called "caña brava" (REWC), and without inclusions (REW). The experimental program consists of two stages: physical and mechanical characterization of materials, where properties such as particle size, density, Atterberg limits, and compressive and flexural strength were determined; and dynamic tests, which included compressive and cyclic load tests on REW and REWC walls. The walls were subjected to cyclic loading with derivatives between 0.2 % and 1.4 % in-plane combined with a constant vertical compressive stress of 13 kPa to simulate seismic forces in the presence of gravity loads. The results regarding loading, hysteretic response, energy dissipation, stiffness degradation, and failure mode are compared. In addition, the envelope curves of the load-displacement hysteretic responses are analyzed using a capacity spectrum approach. It is observed that the inclusion of Arundo donax natural fiber negatively affects the mechanical properties of the walls and their hysteretic response. It is also observed that the energy dissipation is affected by the inclusion of Arundo donax natural fiber. However, the stiffness behavior is similar in all the walls. Rigid body failure modes are identified in all the walls, but the walls, including Arundo donax natural fiber, form failure planes that divide the wall into two bodies.
Disciplines :
Civil engineering Architecture
Author, co-author :
Mora-Ruiz, Viviana ; Universidad de Investigación y Desarrollo, Facultad de Ingeniería Civil, Grupo de Investigación en Amenazas, Vulnerabilidad y Riesgos a Fenómenos Naturales, Cl. 9 # 23-55, 680001, Bucaramanga, Santander, Colombia
Mejía Parada, Cristian Andres ; Université de Liège - ULiège > Urban and Environmental Engineering ; Universidad de Investigación y Desarrollo, Facultad de Ingeniería Civil, Grupo de Investigación en Amenazas, Vulnerabilidad y Riesgos a Fenómenos Naturales, Cl. 9 # 23-55, 680001, Bucaramanga, Santander, Colombia
Nuñez, Brayam; Universidad Pontificia Bolivariana, Facultad de Ingeniería Civil, Autopista Piedecuesta Kilómetro 7, Floridablanca, Santander, Colombia
Pineda, Sergio M; Universidad Pontificia Bolivariana, Facultad de Ingeniería Civil, Grupo de Investigación GRINDIC, Autopista Piedecuesta Kilómetro 7, Floridablanca, Santander, Colombia
Prado, Néstor I; Universidad Pontificia Bolivariana, Facultad de Ingeniería Civil, Grupo de Investigación GRINDIC, Autopista Piedecuesta Kilómetro 7, Floridablanca, Santander, Colombia
Vallejo-Borda, Jose Agustin; Universidad de Investigación y Desarrollo, Facultad de Ingeniería Civil, Grupo de Investigación en Amenazas, Vulnerabilidad y Riesgos a Fenómenos Naturales, Cl. 9 # 23-55, 680001, Bucaramanga, Santander, Colombia ; Departamento de Tecnologías Sostenibles y Civil, Tecnológico de Monterrey, Monterrey, Nuevo León, Mexico
Arrieta-Baldovino, Jair; Universidad de Cartagena, Facultad de Ingeniería, Programa de Ingeniería Civil, Avenida Del Consulado Calle 30, 48-152, 130015, Cartagena de Indias, Colombia
Language :
English
Title :
Experimental analysis of the cyclic behavior of rammed earth walls reinforced with arundo donax natural fiber.
We are grateful to the research and development university for their valuable collaboration during the execution of the manuscript. In addition, we would like to express our gratitude to the Pontifical Bolivarian University, especially the materials laboratory, for facilitating the use of their facilities during the experimental phase. These collaborations were fundamental to carrying out our study and contributed significantly to the results obtained.
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