High-performance concrete under biaxial and triaxial loads / Hampel, T. in Journal of engineering mechanics, Vol. 135 N° 11 (Novembre 2009)  

Public ISBD [article]  inJournal of engineering mechanics > Vol. 135 N° 11 (Novembre 2009) . - pp. 1274-1280 Titre : High-performance concrete under biaxial and triaxial loads Type de document : texte imprimé Auteurs : Hampel, T., Auteur ; Speck, K., Auteur ; Scheerer, S., Auteur Article en page(s) : pp. 1274-1280 Note générale : Mécanique appliquée Langues : Anglais (eng) Mots-clés : Biaxial stress Failure loads High-strength concrete Three-dimensional models Compression Ultimate strength Load factors. Résumé : This paper presents results of multiaxial strength tests on various high-performance concretes (HPCs) with uniaxial compressive strength from 58 to 94 MPa. A large number of stress ratios of biaxial compression-tension, compression-compression, and triaxial compression tests were investigated. Experiments were performed using a servohydraulic jack with variable stress ratios, whereas steel brushes were used to transfer the load to the specimen. With increasing uniaxial strength the obtained normalized multiaxial strength decreases. The results, along with mathematical approximations, are discussed for the description of failure. The formulated failure criteria for HPC can be used, e.g., in finite-element simulations. The increase in strength by acting a multiaxial compressive stress state or the decrease in strength by acting a compressive-tensile stress state related to the uniaxial compressive strength can be considered and enables a better material exploitation. DEWEY : 620.1 ISSN : 0733-9399 En ligne : http://ascelibrary.aip.org/vsearch/servlet/VerityServlet?KEY=JENMDT&ONLINE=YES&s [...] [article] High-performance concrete under biaxial and triaxial loads [texte imprimé] / Hampel, T., Auteur ; Speck, K., Auteur ; Scheerer, S., Auteur . - pp. 1274-1280. Mécanique appliquée Langues : Anglais (eng) in Journal of engineering mechanics > Vol. 135 N° 11 (Novembre 2009) . - pp. 1274-1280 Mots-clés : Biaxial stress Failure loads High-strength concrete Three-dimensional models Compression Ultimate strength Load factors. Résumé : This paper presents results of multiaxial strength tests on various high-performance concretes (HPCs) with uniaxial compressive strength from 58 to 94 MPa. A large number of stress ratios of biaxial compression-tension, compression-compression, and triaxial compression tests were investigated. Experiments were performed using a servohydraulic jack with variable stress ratios, whereas steel brushes were used to transfer the load to the specimen. With increasing uniaxial strength the obtained normalized multiaxial strength decreases. The results, along with mathematical approximations, are discussed for the description of failure. The formulated failure criteria for HPC can be used, e.g., in finite-element simulations. The increase in strength by acting a multiaxial compressive stress state or the decrease in strength by acting a compressive-tensile stress state related to the uniaxial compressive strength can be considered and enables a better material exploitation. DEWEY : 620.1 ISSN : 0733-9399 En ligne : http://ascelibrary.aip.org/vsearch/servlet/VerityServlet?KEY=JENMDT&ONLINE=YES&s [...]

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