TY - CONF A1 - Recknagel, Christoph A1 - Vater, Ernst-Joachim T1 - Bond strength and crack bridging behaviour of bridge deck surfacings for concrete bridges T2 - 5th International RILEM Conference "Cracking in Pavements" T2 - 5th International RILEM Conference "Cracking in Pavements" CY - Limoges, France DA - 2004-05-05 PY - 2004 AN - OPUS4-6244 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Recknagel, Christoph A1 - Hoppe, Johannes A1 - Pirskawetz, Stephan A1 - Wenzel, Norman A1 - Spitzer, Stefan T1 - SENSO JOINT - An innovative sensor for suitable joint design N2 - Inacceptable capability and durability of joint sealing systems but also inadequate traffic performance (noise emission; overrolling comfort) up to traffic safety aspects reflect the still enormous demand for data-based description of concrete pavements performance under heavy loading conditions. Especially the deformation behavior of concrete pavement slabs in the joint region in consideration of new pavement construction types and improved concrete mixtures meanwhile established but also under the steeply rising traffic loads is not sufficiently explored. To create a data basis for advanced design rules, evaluation methods and product standards - and with it to improve quality, durability and finally sustainability of pavements - an innovative 3-D sensor system SENSO JOINT adapted to german roadworking requirements and suitable for heavy-duty operating conditions was developed. The contribution introduced describes the development of an extensive technical solution based on the analysis of decisive loads, interactions and boundary conditions. Based on calibration data, results of laboratory testing and finally field-testing on different concrete pavement construction types the outcome of a multi-level evaluation process shall introduce the potential of the new sensor system. T2 - 9th International Conference on Maintenance and Rehabilitation of Pavements (MAIREPAV 2020) CY - Online meeting DA - 01.07.2020 KW - Concrete pavements KW - Sustainable joint sealing KW - Load quantification KW - innovative measurement technology KW - Field validation KW - Performance design for joint systems PY - 2020 AN - OPUS4-51926 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Recknagel, Christoph T1 - Joint sealing systems für heavy-duty concrete pavements - Requirements for an performance-oriented approach N2 - Fugenfüllsysteme für Fahrbahnbeläge unter höchsten Beanspruchungen bestimmen in zunehmenden Maße die sichere Verfügbarkeit des Autobahnnetzes. Die aktuellen europäischen technischen Regelungen zu deren Verwendbarkeit folgen noch einem spezifikatorischen Ansatz auf empirischen Grundlagen. Es hat sich gezeigt, dass ein solcher Ansatz den Dauerhaftigkeits- und Nutzungsanforderungen nicht mehr entsprechen kann. Der Autor plädiert in seinem Vortrag für einen Paradigmenwechsel hin zu einem funktionsanalytischen Bewertungsansatz. Es werden Vorschläge für eine versuchstechnische Lösung des Problems und die damit verbundenen Chancen für Optimierung und Innovation aufgezeigt. T2 - Meeting CEN TC 227, WG 3 and TG 3 CY - Berlin, Germany DA - 20.11.2018 KW - Sealing systems KW - Concrete pavements KW - Harmonised standardisation PY - 2018 AN - OPUS4-47079 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Recknagel, Christoph A1 - Wenzel, Norman T1 - Practical approved life expectancy of SSG - Prognosis of life expectancy by a performanced-based test method N2 - Structural Silicone Glazing (SSG) is a curtain walling method that utilizes silicone sealants to adhere glass, ceramic, metal or composite panels to supporting framing members by means of a peripheral adhesive joint. In SSG curtain walls, silicone sealants serve not only as a weather seal, but also act as a structural bonding element, eliminating the need for exterior retainers and covers. The paper discusses some essential findings of two recent research studies on the durability and service life of structural silicone glazing sealants and structures. The first study demonstrates, that specimens of a first generation 2-part silicone sealant taken from a SSG façade after 23+2 years of real life successfully passed the European ETAG002-1 performance criteria for residual strength. In a second study, a new performance-based durability test method was developed in partnership with the Federal Institute for Materials Research Berlin/Germany (BAM). This method is based on simultaneously exposing system test specimens to artificial weathering and complex, multiaxial mechanical loadings. 2-part structural silicone sealants of the first and of the second generation where subjected to this test, which is considered to correspond to an anticipated service life of 50 years. T2 - European Congress "Glass Processing Days" CY - Tampere, Finland DA - 28.06.2017 KW - Durability of glas facades KW - SSG Technology KW - Silicone sealants PY - 2017 AN - OPUS4-41281 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -