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Bond Strength

 
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jrm2002
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Joined: 26 Jan 2003
Posts: 67

PostPosted: Wed Dec 15, 2004 6:13 pm    Post subject: Bond Strength Reply with quote

 Considering a pull out test being performed for testing the bond strength . The steel bar is embedded in a concrete cylinder and is pulled until failure occurs. It is said that the concrete in the test specimen is subjected to a state of compression (not tension). how is the concrete in a state of compression??

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hsnagle
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Joined: 26 Jan 2003
Posts: 7

PostPosted: Thu Dec 16, 2004 3:43 am    Post subject: Bond Strength Reply with quote

If you can visualise the actual action, the part of concrete betn embedded end to exposed end of bar you will find the reason for this eg if you are pulling soil by trovel towards you, you will find that its volume reduces ie the case of compression

h.s.nagle

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