Volume :

1

Issue :

2

Abstract :

The purpose of this study is to evaluate the ability of single adhesive anchors to resist sustained tensile load when installed in concrete and to develop a rationale guideline for their design and selection. Currently, most of the designers follow adhesives manufacturer’s recommendations. Every manufacturer is claiming the best properties for its products through its product manuals, however, despite its widespread use, very seldom any one of these products have been tested in a laboratory to verify their actual properties. To evaluate the tensile strength of the epoxies used for reinforcing anchors, pull out tests were performed on the steel bars anchored at two different development lengths of 3 & 6 inches using the material of two manufacturers. This helped in recommending the minimum depth for the installation of anchors using epoxies. For the purpose of comparison pull out test were also performed on steel bars anchored, at two different development lengths 6 & 9 inches, using ready mixed grout. The results shown by the epoxies for 3 inches anchorage depth did not agree with the claims made by the manufacturers, however, the epoxies showed good results for 6 inches anchorage depth. For 9 inches or more anchorage depths the ready mixed grout showed good results than epoxies.