Adhesive Anchors in Concrete Under Sustained Loading Conditions (2009) / Chapter Skim
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Pages 35-44
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35 This chapter presents the test program conducted at the University of Florida in the summer and fall of 2008 to validate the draft AASHTO test method. The draft AASHTO "Standard Method of Test for Evaluation of Adhesive Anchors in Concrete Under Sustained Loading Conditions" is presented in Appendix A of this report.
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36 other on either side of the anchor.
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37 Sustained Load (Creep) Test The testing apparatus for the sustained load (creep)
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38 Specimen Preparation The test specimen consisted of three parts: the concrete test member, the adhesive, and the anchor rod. Concrete Test Member The concrete test members were poured in six 48- × 461⁄2× 12-in.
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39 6-ft stock, and their ends ground and chamfered with a bench grinder and steel brush to remove burrs and to clean up the threads in order to install the nuts. Prior to installation, the rods were cleaned with acetone, allowed to air dry, and protected with paper until installed.
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turned off during the loading phase of the sustained load (creep) tests.
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41 • Every minute for the first hour following the loading process. • Every 10 min for 9 hours.
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42 from the chamber. It was decided to test the first series of sustained load (creep)
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43 the chamber, with the doors closed. For safety reasons, the door was always left open when the operator was inside the chamber.
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44 to enable the hydraulic ram to apply the pre-compressed spring load to the anchor. It would be critical that the ram apply the load through the load cell.
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