Abstract
Research into the bond and durability of polymer-mortared studs was carried out according to the UKA 3 technology method. The studs were also exposed to extreme weather conditions and chemical influences as well. In the pull-out-tests 18-years old bolts had a shear failure between the mortar and the steel stud. The shear strength after 8 1/2 years of weathering reached an average value of 14,5 N/mm2 which corresponds to the average value of bond strength reached after one day of curing.
The bond specimens that were sustained under a steady load and cured in alkalic concentrated water for over a period of 8 1/2 years showed a larger slippage in the bond than those cured under dry condition, the strength, however, was the same.
Moreover it was found that cracks of 0,3 mm in concrete caused a strength reduction of 50% for studs of 20 mm in diameter and 80% for studs of 10 mm in diameter.
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References
Prof. Dr. Ing. G. FRANZ (1966) TU Karlsruhe
Dr. SELL, Report No. 72 019 “Ausziehfestigkeit 10 Jahre in Gebrauch befindlicher, der Witterung und erhöhtem chemischen Angriff ausgesetzter, reaktionsharz-vermörtelter Anker, System Upat UKA 3”
Dr. SELL, Report No. 73 023 Ergänzungsversuche zum Untersuchungsbericht Nr. 72 019 “Ausziehfestigkeit hochfester Gewindeanker M16, vermörtelt mit UKA 3 Patronen M16, an der Kranbahn der Kohlenbunkerungsanlage des Kraftwerks München-Nord”
Dr. SELL, Report No. 83 223 “Ausziehfestigkeit 18 Jahre in Gebrauch befindlicher, reaktionsharz-vermörtelter Anker UKA 3 M16”
Dr. SELL, Report No. 74 048 “Vergleichende Untersuchungen zur Verbundtragfähigkeit im Frischbeton eingelegter Profilstähle und UKA 3 vermörtelter Gewindestäbe”
Dr. SELL, Report No. 83 231 “Kriechschlupf und Ausziehfestigkeit bei kurz-und langzeitiger Belastung, im trockenen und nassen Normal-und LIAPOR-Beton UKA 3 vermörtelter, trocken und in Wasser gelagerter Anker”
Dr. SELL, Report No. 85 270 (under preparation)
Dr. SELL, Report No. 85 257 “Ausziehwiderstand von UKA 3 Ankern M10 bis M20 in Abhängigkeit von der Rißweite”
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© 1986 Springer Science+Business Media Dordrecht
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Sell, R. (1986). Bonding of Steelbolts to Concrete by UKA 3 — Technology. In: Sasse, H.R. (eds) Adhesion between polymers and concrete / Adhésion entre polymères et béton. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-3454-3_57
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DOI: https://doi.org/10.1007/978-1-4899-3454-3_57
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