A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Robustness of UHPC - A new approach for mixture proportioning
Experiences with UHPC (ultra high performance concrete) have clearly shown the problem of the unsatisfactory robustness concerning variations in the material properties of its components. Solving these problems is a precondition for establishing the new material in building praxis. For design of a robust mixture the knowledge of the 'optimal mixture' is necessary; however the robust mixture proportioning will differ thereto. The robust mixture will not achieve the maximum possible performance in the relevant concrete properties (for example the compressive strength). But for the robust mixture it is required to reproduce the aimed properties with a satisfactory assurance despite any unfavourable influences. In this paper a new approach for the proportioning of robust UHPC mixtures is suggested. Further the influence of the fresh concrete properties on the robustness of the hardened concrete is pointed out by means of laboratory tests.
Robustness of UHPC - A new approach for mixture proportioning
Experiences with UHPC (ultra high performance concrete) have clearly shown the problem of the unsatisfactory robustness concerning variations in the material properties of its components. Solving these problems is a precondition for establishing the new material in building praxis. For design of a robust mixture the knowledge of the 'optimal mixture' is necessary; however the robust mixture proportioning will differ thereto. The robust mixture will not achieve the maximum possible performance in the relevant concrete properties (for example the compressive strength). But for the robust mixture it is required to reproduce the aimed properties with a satisfactory assurance despite any unfavourable influences. In this paper a new approach for the proportioning of robust UHPC mixtures is suggested. Further the influence of the fresh concrete properties on the robustness of the hardened concrete is pointed out by means of laboratory tests.
Robustness of UHPC - A new approach for mixture proportioning
Robustheit von Ultrahochleistungsbetonen (UHPC) - ein neuer Ansatz für die Mischungsregulierung
Lohaus, Ludger (author) / Ramge, Peter (author)
2008
8 Seiten, 6 Bilder, 2 Tabellen, 9 Quellen
Conference paper
English
Stabilität , Ultrahochleistungsbeton , Mischung (Stoff) , Mischen , Mischen (Feststoff) , Mehrkomponentenmischung , Druckfestigkeit , Konsistenz , Verarbeitungseigenschaft , Gießbarkeit , Superplastifizierer , Packungsdichte (Partikel) , spezifische Oberfläche , Fließverhalten , Sättigungszustand , Wasser-Zement-Wert
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