Title:
Crack Width in Partially Prestressed T-Beams
Having Steel Fibers
Author(s):
Job Thomas and Ananth Ramaswamy
Publication:
Structural Journal
Volume:
103
Issue:
4
Appears on pages(s):
569-576
Keywords:
beam; crack; fiber-reinforced concrete; high-strength concrete, steel
DOI:
10.14359/16433
Date:
7/1/2006
Abstract:
This paper presents the experimental and analytical results of crack width and crack spacing at various loading stages of 12 partially prestressed T-beams, with and without hooked end steel fibers, placed over the partial or full depth of the cross sections. Beams were cast and tested using three grades of concrete having compressive strengths of 35, 65, and 85 MPa (5.07, 9.42, and 12.32 ksi). An analytical model has been proposed to predict the crack width and spacing in partially prestressed beams having steel fibers. The influence of bond slip of longitudinal reinforcement and the pullout of fibers aligned across the crack has been incorporated in the proposed model. The analytical results were found to be in close agreement with corresponding experimental results.