This thesis studied the anchorage bond behavior of structural welded deformed wire fabric and concrete by pull-out test There are many factors which affect the bond stress : concrete compressive strength, bond length, angle of rib(45。, 90。), strength of welded joints, hook, surface condition of weld...
This thesis studied the anchorage bond behavior of structural welded deformed wire fabric and concrete by pull-out test There are many factors which affect the bond stress : concrete compressive strength, bond length, angle of rib(45。, 90。), strength of welded joints, hook, surface condition of welded deformed wire fabric, position of wire, method of test and cross wire. These factor are known to affect the bond properties not individually, but interrelatedly. The principal factors of this experimental study were concrete compressive strengthen(f_(c)' =194.57, 223.50, 278.08), bond length(2.5d_(b), 5d_(b), 7.5d_(b)), cross wire(0, 1), diameter of vertical wire(D6, D8) and steel bar(D6) The conclusions are as follows; 1. At the free end slip of 0.25mm, welded deformed wire fabric were shown the behavior near at the maximum bond stress, but steel bar the behavior of 90percent near at the maximum bond stress. It is think that welded deformed wire fabric be superior to steel bar, in the aspect of bond properties. 2. The experimental equation for maximum average bond stress concerning relative concrete strength in pull-out tests can be shown as follows; u_(max) = 8.39 √f_(c)' + 57.11 3. The values of u_(max) / √(f_(c)' ) decrease with increase of the rate of diameter against bond length.
This thesis studied the anchorage bond behavior of structural welded deformed wire fabric and concrete by pull-out test There are many factors which affect the bond stress : concrete compressive strength, bond length, angle of rib(45。, 90。), strength of welded joints, hook, surface condition of welded deformed wire fabric, position of wire, method of test and cross wire. These factor are known to affect the bond properties not individually, but interrelatedly. The principal factors of this experimental study were concrete compressive strengthen(f_(c)' =194.57, 223.50, 278.08), bond length(2.5d_(b), 5d_(b), 7.5d_(b)), cross wire(0, 1), diameter of vertical wire(D6, D8) and steel bar(D6) The conclusions are as follows; 1. At the free end slip of 0.25mm, welded deformed wire fabric were shown the behavior near at the maximum bond stress, but steel bar the behavior of 90percent near at the maximum bond stress. It is think that welded deformed wire fabric be superior to steel bar, in the aspect of bond properties. 2. The experimental equation for maximum average bond stress concerning relative concrete strength in pull-out tests can be shown as follows; u_(max) = 8.39 √f_(c)' + 57.11 3. The values of u_(max) / √(f_(c)' ) decrease with increase of the rate of diameter against bond length.
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