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Computers and Concrete
  Volume 18, Number 5, November 2016, pages 951-968
DOI: http://dx.doi.org/10.12989/cac.2016.18.5.951
 


Indoor and outdoor pullout tests for retrofit anchors in low strength concrete
Derya Cavunt, Yavuz S. Cavunt and Alper Ilki

 
Abstract
    In this study, pullout capacities of post-installed deformed bars anchored in low strength concrete using different bonding materials are investigated experimentally. The experimental study was conducted under outdoor and indoor conditions; on the beams of an actual reinforced concrete building and on concrete bases constructed at Istanbul Technical University (ITU). Ready-mixed cement based anchorage mortar with modified polymers (M1), ordinary cement with modified polymer admixture (M2), and epoxy based anchorage mortar with two components (E) were used as bonding material. Furthermore, test results are compared with the predictions of current analytical models. Findings of the study showed that properly designed cement based mortars can be efficiently used for anchoring deformed bars in low quality concrete. It is important to note that the cost of cement based mortar is much lower with respect to conventional epoxy based anchorage materials.
 
Key Words
    adhesive; indoor; mortar; outdoor; pullout; retrofit
 
Address
Derya Cavunt, Yavuz S. Cavunt and Alper Ilki: Department of Civil Engineering, Istanbul Technical University, Istanbul, Turkey
 

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