Post-installed anchors in reinforced concrete structures are increasingly important in current constructions especially in repair or upgrading works. A research program was completed to determine the influence of the tightening torque and the anchorage depth on the pullout performances of torque-controlled expansion anchors. The diameter d of the tested anchors was 10 mm. Six configurations were tested on 18 concrete blocks. Three pre-tension loads and two anchorage depths were considered. The results show that the fastening torque has no influence on the load-bearing capacity far away from the edges. However, an increase of the torque leads to a decrease of the anchor’s slipping during pullout tests. Nevertheless, applying an excessive fastening torque may lead to a steel-rupture of the anchor during the fastening phase. An increase of the anchorage depth leads to a better load capacity of the anchor and reduces the risk of concrete cone rupture. Finally, a simplified model of the tension response of the anchor with a bilinear load-displacement relationship has been suggested.
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Al-Taan, S., Al-Jaffal, A., and Mohammed, A. A. (2012). “Breakout capacity of headed anchors in steel fibre normal and high strength concrete.” Asian Journal of Applied Sciences, pp. 485–496, DOI: 10.3923/ajaps.2012.485.496.
ASTM E 488–96 (1996). Standard Test Methods for Strength of Anchors in Concrete and Masonry Elements, American Society for Testing and Materials, West Conshohocken, PA, US.
Bode, H. and Hanenkamp, W. (1985). “Strength of headed bolts subjected to tensile loads.” Bauingenieur, Vol. 60, pp. 361–367.
CSA N287.2 (1998) Material Requirements for Concrete Containment Structures for CANDU Nuclear Power Plants, Canadian Standards Association, Rexdale, Ontario, Canada.
Delhomme, F., Giorrata, J., and Chaudet, P. (2016). “Tensile behaviour of post-installed bonded anchors in ultra-high performance fiber reinforced concrete.” Proc. 9th RILEM international symposium on fiber reinforced concrete, Vancouver, Canada, pp. 320–329.
El Sharnouby, M. M. and El Naggar, M. H. (2010). “Numerical investigation of the response of expansion anchors used to attach helical pile connectors to concrete foundations.” Revue Canadienne de Génie Civil, pp. 866–877, DOI: 10.1139/L10-025.
Eligehausen, R., Mallee, R., and Solva, J. F. (2006). Anchorage in Concrete Construction, Ernst & Sohn, Berlin, Germany.
Eligehausen, R. and Sawade, G. (1989). A fracture mechanics based description of the pullout behaviour of headed studs embedded in concrete, Stuttgart University, https://doi.org/elib.uni-stuttgart.de/bitstream/11682/7947/1/eli52.pdf. Accessed 04 April 2016.
Elihegausen, R., Bouska, P., Cervenka, V., and Pukl, R. (1992). Size effect of the concrete cone failure load of anchor bolts. Stuttgart University, https://doi.org/elib.uni-stuttgart.de/bitstream/11682/7911/1/eli81.pdf. Accessed 04 October 2016.
European Organisation for Technical Approvals (2013). Guideline for European technical approval of metal anchors for use in concrete, ETAG 001, Bruxelles, Belgium.
European Organisation for Technical Certification (2012). Chevilles de fixation Hilti HSA, ATE-11/0374, Deutsches institut für Bautechnik, Berlin.
Fushs, W., Eligehausen, R., and Breen, J. E. (1995). “Concrete Capacity Design (CCD) approach for fastening to concrete.” ACI Structural Journal, Vol. 92, pp. 73–94.
Ghobarag, A. and Aziz, T. (2004). “Seismic qualification of expansion anchors to Canadian nuclear standards.” Nuclear Engineering and Design, Vol. 228, Issues 1–3, pp. 377–392, DOI: 10.1016/j.nucengdes.2004.01.021.
Hilti (2014). Technical specifications sheet for HSA Hilti anchors, https://doi.org/www.hilti.fr/medias/sys_master/documents/h89/9118010343454/Fiche_technique_du_goujon_HSA_Fiche_technique_ASSET_DOC_LOC_1917353.pdf. Accessed 06 January 2016.
Jin-Sup, K., Woo, Y., J., Minho, K., and Bu-Seog, J. (2013). “Performance evaluation of the post-installed anchor for sign structure in South Korea.” Construction and Building Materials, Vol. 44, pp. 496–506, DOI: 10.1016/j.conbuildmat.2013.6.043.
Kellermann, R. and Klein, H. (1955). “Untersuchungen über den Einfluβ der Reibung auf Corspannung und Anzugsmoment bei Schrau-benverbindungen.” Konstruktion Berlin, Vol. 7, pp. 54–68.
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Delhomme, F., Pallud, B. & Rouane, N. Tightening Torque Influence on Pullout Behavior of Post-installed Expansion Anchors. KSCE J Civ Eng 22, 3931–3939 (2018). https://doi.org/10.1007/s12205-018-0930-9
- pullout test