Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Stress relaxation losses of prestressing steel wires
Year:2011
Research Areas
  • Mechanical properties,
  • Scientific calculation
Information
Abstract
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.
International
Si
JCR
No
Title
CPI - Concrete Plant International
ISBN
1439-7706
Impact factor JCR
0
Impact info
Volume
Journal number
From page
26
To page
31
Month
SIN MES
Ranking
Participants
  • Autor: Fernando Suarez Guerra (UPM)
  • Autor: Manuel Elices Calafat (UPM)
  • Autor: Jaime Carlos Galvez Ruiz (UPM)
  • Autor: Jose Miguel Atienza Riera (UPM)
  • Autor: David Angel Cendon Franco (UPM)
Research Group, Departaments and Institutes related
  • 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
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)