Submit Manuscript

Asian Journal of Applied Sciences

Year: 2012 | Volume: 5 | Issue: 7 | Page No.: 485-496
Facebook Twitter Digg Reddit Linkedin StumbleUpon E-mail

Article Trend

Total views 992

Search

Authors

Saad Ali AlTaan

AbdulKader Ali Mohammed

Alaa AbdulRahman Al-Jaffal

Keywords

This research studied the breakout capacity of cast-in-place single short-headed anchor bolts embedded in both normal and high strength steel fibrous reinforced concrete. Concrete strength ranged from 27.4 to 58 MPa, four volume fractions of steel fibres (0.4, 0.8, 1.2 and 1.6%), two aspect ratios (19.63, 36.36), three anchor diameters (8, 10 and 12 mm) and four embedment depths (25, 37.5, 50 and 62.5 mm) were used. The majority of the specimens were failed by concrete cone failure and the cone breaks into pieces in some cases (concrete failure), while the other specimens were failed by yielding or fracture of the bolts (steel failure). The tests results showed that the concrete angle cone is increasing with the embedment depth, the fibre reinforcing index and decreasing with the concrete strength. The breakout capacity of the anchors were increased by the addition of steel fibres to concrete and the size of the cones failure in fibrous concrete were smaller than the cones in plain concrete specimens. Based on the experimental results, an expression is proposed to estimate a variable concrete cone angle which is then used to predict the breakout capacity of single headed anchors embedded in normal and high strength fibrous concrete and showed good agreement with the test results. A regression equation based on the observed breakout capacities is also proposed to predict the breakout capacity and both methods showed the same degree of accuracy.
PDF Fulltext XML References Citation

Leave a Comment

Your email address will not be published. Required fields are marked *