Checking for non-preferred file/folder path names (may take a long time depending on the number of files/folders) ...
This resource contains some files/folders that have non-preferred characters in their name. Show non-conforming files/folders.
This resource contains content types with files that need to be updated to match with metadata changes. Show content type files that need updating.
Effect of Elevated Temperatures on the Mechanical Properties and Relaxation of CFRP Strands; Excel Data files
| Authors: |
|
|
|---|---|---|
| Owners: |
|
This resource does not have an owner who is an active HydroShare user. Contact CUAHSI (help@cuahsi.org) for information on this resource. |
| Type: | Resource | |
| Storage: | The size of this resource is 64.1 MB | |
| Created: | Jan 25, 2021 at 1:50 p.m. | |
| Last updated: | Jan 25, 2021 at 3:10 p.m. | |
| DOI: | 10.4211/hs.ca62023e72ae4df7af31dd27fea02450 | |
| Citation: | See how to cite this resource |
| Sharing Status: | Published |
|---|---|
| Views: | 719 |
| Downloads: | 19 |
| +1 Votes: | Be the first one to this. |
| Comments: | No comments (yet) |
Abstract
Although prestressing carbon fiber-reinforced polymer (CFRP) strands outperform steel strands on different levels such as strength and durability, their performance under elevated temperatures remains a susceptible design issue that needs careful evaluation. Moderate increase in the temperature of prestressing CFRP strands takes place during construction due to concrete curing. CFRP strands can also experience increase in temperature if the CFRP-prestressed structural element is subjected to fire during service. This paper addresses the effect of increasing the temperature on the strength of prestressing CFRP strands as well as the level of prestressing force. Two sets of CFRP strand specimens with two different diameters were prepared and evaluated for strength degradation triggered by the increase in temperature to 350 °C (662 °F). Two more sets of prestressed CFRP strands were evaluated for prestress loss due to increase in temperature to 204 °C (400 °F). The prestress loss due to temperature increase was verified by constructing and monitoring half-scale decked bulb T beams prestressed with CFRP strands. Test results showed that tensile strength of CFRP specimens decreased with the increase in temperature. In addition, first heating cycle of prestressed CFRP strands led to a slight permanent strand relaxation and a corresponding prestress loss. Subsequent cycles of heating and cooling did not seem to generate additional relaxation of the strands as long as the temperature of the first cycle was not exceeded. Furthermore, CFRP specimens subjected to heating and cooling cycles showed no reduction in the strength when tested at ambient conditions afterwards.
Subject Keywords
Content
Credits
Funding Agencies
This resource was created using funding from the following sources:
| Agency Name | Award Title | Award Number |
|---|---|---|
| Michigan Department of Transportation (MDOT) | OR14-024 |
How to Cite
This resource is shared under the Creative Commons Attribution CC BY.
http://creativecommons.org/licenses/by/4.0/
Comments
There are currently no comments
New Comment