|Table of Contents|

Experiment of Relaxation Performance of AFRP Sheets(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2010年01期
Page:
73-77，126
Research Field:
Publishing date:
2010-03-20

Info

Title:
Experiment of Relaxation Performance of AFRP Sheets
Author(s):
ZHANG Jian-wei1; 2;  ZHANG Rui-yun1;  DU Xiu-li2
1. School of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China; 2. Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing 100124, China
Keywords:
AFRP sheet;  epoxy adhesive;  stress relaxation;  tension control stress
PACS:
TU375
DOI:
-
Abstract:
For researching the loss of prestress caused by the stress relaxation of prestressed aramid fiber reinforced polymer(AFRP)sheets, an experiment about stress relaxation performances of aramid fiber sheets with 28 specimens was carried out. The results show that the higher the tension control stress is, the greater the stress relaxation loss becomes; the relaxation rate linearly depends on the time logarithm; stress relaxation is fast at the beginning and tends to be stable after 200 h; the stress relaxation loss of dipping AFRP sheets is lower than the sheets without dipping; stress relaxation of prestressed AFRP sheets caused by the temperature variations is not obvious under 10 ℃～30 ℃ conditions.

References:

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Last Update: 2010-03-20