Memorias de investigación
Artículos en revistas:
Stress relaxation losses of prestressing steel wires
Año:2011
Áreas de investigación
  • Propiedades mecanicas,
  • Cálculo científico
Datos
Descripción
Prestressed structures are susceptible to relaxation losses which are of significant importance in structural design. After being manufactured, prestressing wires are coiled to make their storage and transportation easier. The possible deleterious effects of this operation on the stress relaxation behavior of prestressing steel wires are usually neglected, though it has been noticed by manufacturers and contractors that when relaxation tests are carried out after a long-time storage, on occasions relaxation losses are higher than those measured a short time after manufacturing. The influence of coiling on the relaxation losses is checked by means of experimental work and confirmed with a simple analytical model. The results show that some factors like initial residual stresses, excessively long-time storage or storage at high temperatures, can trigger or accentuate this damage. However, it is also shown that if the requirements of standards are fulfilled (minimum coiling diameters) these effects can be neglected.
Internacional
Si
JCR del ISI
No
Título de la revista
CPI - Concrete Plant International
ISSN
1439-7706
Factor de impacto JCR
0
Información de impacto
Volumen
DOI
Número de revista
Desde la página
26
Hasta la página
31
Mes
SIN MES
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Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Tecnología de la Construcción y Ciencia de los Materiales para la edificación y la obra Civil
  • Centro o Instituto I+D+i: Centro de Seguridad y Durabilidad Estructural y de Materiales (CISDEM). Centro Mixto UPM-CSIC
  • Grupo de Investigación: Materiales Estructurales Avanzados y Nanomateriales