A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Investigations on adhesive joints of ultra high performance concrete (UHPC) members
Within this article some important preliminary investigations to the topic of joining UHPC (Ultra High Performance Concrete) members by gluing are presented and the materials are described in brief. The main aspect of the paper is the discussion of failure criterions of adhesive joints. In this research work a cold curing two componentepoxy resin adhesive called MC DUR 1280 was used. As their mechanical properties highly depend upon the temperature, another special high strength mineral adhesive, called RPC-adhesive (reactive powder concrete adhesive) based on a fine grained UHPC mixture was developed. The UHPC to be joined was used with and without steel fibres as well as with and without heat treatment. Sandblast pretreatment was advantageous for the RPC adhesive, while the epoxy adhesive strength was independent of the surface pretreatment. No influence to the joint strength was detected neither for specimens glued with epoxy resin adhesive nor for specimens glued with RPC-adhesive. No influence to the joint strength of steel fibers in the UHPC was detected neither for specimens glued with epoxy resin adhesive nor for specimens glued with RPC-adhesive. Some further investigations to failure criterions for biaxial stress conditions are presented and discussed for both of the loining materials.
Investigations on adhesive joints of ultra high performance concrete (UHPC) members
Within this article some important preliminary investigations to the topic of joining UHPC (Ultra High Performance Concrete) members by gluing are presented and the materials are described in brief. The main aspect of the paper is the discussion of failure criterions of adhesive joints. In this research work a cold curing two componentepoxy resin adhesive called MC DUR 1280 was used. As their mechanical properties highly depend upon the temperature, another special high strength mineral adhesive, called RPC-adhesive (reactive powder concrete adhesive) based on a fine grained UHPC mixture was developed. The UHPC to be joined was used with and without steel fibres as well as with and without heat treatment. Sandblast pretreatment was advantageous for the RPC adhesive, while the epoxy adhesive strength was independent of the surface pretreatment. No influence to the joint strength was detected neither for specimens glued with epoxy resin adhesive nor for specimens glued with RPC-adhesive. No influence to the joint strength of steel fibers in the UHPC was detected neither for specimens glued with epoxy resin adhesive nor for specimens glued with RPC-adhesive. Some further investigations to failure criterions for biaxial stress conditions are presented and discussed for both of the loining materials.
Investigations on adhesive joints of ultra high performance concrete (UHPC) members
Untersuchungen an Klebeverbindungen von Stäben aus Ultrahochleistungsbeton (UHPC)
Muehlbauer, Christian (author) / Zilch, Konrad (author)
2008
8 Seiten, 9 Bilder, 2 Tabellen, 11 Quellen
Conference paper
English
Klebstoff , Klebebondieren , Klebetechnik , Klebverbindung , Ultrahochleistungsbeton , Epoxidharz , Haftfestigkeit , Wärmebehandlung (Materialbearbeitung) , stahlfaserverstärkter Beton , Temperatureinfluss , biaxiale Beanspruchung , dreiachsiger Spannungszustand , Scherbeanspruchung , zweiachsiger Spannungszustand , Spannungstensor
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