TY - GEN A1 - Hoffmann, Dirk A1 - Niesel, Konrad T1 - Effect of air pollutants on renderings and moisture-transport phenomena in masonry N2 - Determining a pore structure’s mechanical and chemical data on lime rendering exposed outdoors and including masonry in the laboratory, with regard to their behaviour on moisture transport and weathering was the objective. In search of clues for a dose-response relation - i.e. upon a connection between the emission rate of SO2 and NOx on one hand and the degree of damage to mainly plaster having a lime component on the other - it has been of interest to what extent their structural characteristics including pore space are modified and so consequently also physico-technical properties and chemical composition. For determining corresponding criteria, a widely diversified spectrum of test methods such as to obtain data concerning porosity and moisture transport, mechanical behaviour, and chemistry as well is available. A description of the manufacture of plate-shaped rendering specimens with lime putty, industrially hydrated lime and dolomitic hydrate (the last two also having a cement admixture) and also hydraulic lime as binding agents is included. First deposition velocity and absorption rate for SO2 were determined in laboratory tests on these materials in dry and moist states. After their exposure on outdoor racks at six locations in the Berlin region with differing SO2 atmospheric contents over at least 5 years, the samples of course show timedependent modifications of chemical and physical qualities which are especially reflected in the form of profiles of structure, strength and concentration, e.g. for sulphate. Local climatic differences, however, partly exert a greater influence on material than emissions. Similar investigations were performed on samples of comparable composition exposed 4 and 17 years. But the real surprise is furnished by the renderings’ behaviour depending upon orientation and upon height at a building. Since weathering behaviour and moisture transport (absorption, storage, release) are directly interdependent, further criteria are necessary for a critical assessment of a plasters’ pore structure. Starting from sands, plasters were characterized. The structural parameters were lastly influenced by the respective contents of sand, binder and mixing water. These results and those gained from bricks naturally find their expression in masonry sections manufactured there from, and above all in their capillary and evaporative behaviours, and also when applying different test liquids. Summary and cited literature is given at the end of this report. KW - Building Material KW - Mercury Intrusion Porosimetry KW - Gas Adsorption PY - 2008 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-356780 SP - 1 EP - 126 PB - Bundesanstalt für Materialforschung und -prüfung (BAM) CY - Berlin AN - OPUS4-35678 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Niesel, Konrad T1 - Weathering behaviour of buildings in an urban atmosphere PY - 1982 VL - 3 IS - 3 SP - 11 EP - 12 CY - Zürich, Strasbourg AN - OPUS4-36080 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Niesel, Konrad T1 - Möglichkeiten der Beurteilung des Verwitterungsverhaltens von porösen Werksteinen: Bedeutung der gefügeabhängigen Kriterien PY - 1982 SN - 0015-8186 VL - 60 IS - 1 SP - 81 EP - 100 PB - Schweizerbart CY - Stuttgart AN - OPUS4-36083 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Niesel, Konrad T1 - Zum Verwitterungsverhalten von Naturwerksteinen PY - 1984 SN - 0028-1034 - 0178-3343 VL - 20 IS - 1 SP - 30 EP - 32 PB - Giesel-Verl. CY - Isernhagen AN - OPUS4-36805 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Niesel, Konrad T1 - Analyses aux rayons X sur microscope électronique à balayage PY - 1983 VL - 4 IS - 3 SP - 34 EP - 35 CY - Chartes, France AN - OPUS4-36690 LA - fra AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niesel, Konrad T1 - Materialkennwerte als Kriterien für die Verwitterung von Naturwerkstein T2 - Internationales Kolloquium "Werkstoffwissenschaften und Bausanierung" CY - Esslingen DA - 06.09.1983 PY - 1983 SP - 311 EP - 315 PB - Edition Lack und Chemie CY - Filderstadt AN - OPUS4-36691 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Niesel, Konrad T1 - The weathering behaviour of natural building stone PY - 1983 VL - 18 IS - 8 SP - 30 EP - 31 CY - London AN - OPUS4-36692 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niesel, Konrad T1 - Verwitterungsverhalten von Bauwerken und Skulpturen in städtischer Atmosphäre T2 - SURTEC Internationale Ausstellung und Kongreß für die Oberflächentechnik CY - Berlin DA - 24.10.1983 PY - 1983 N1 - Dreisprachig: deutsch, englisch, französisch AN - OPUS4-36693 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Niesel, Konrad T1 - Zum Stand der Werksteinuntersuchung für den Denkmalschutz PY - 1983 SN - 0170-9267 VL - 6 IS - 2 SP - 69 EP - 71 PB - Müller CY - Köln AN - OPUS4-36745 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Niesel, Konrad T1 - Aspekte der Untersuchung von Porenraumveränderungen in feuchtem Mauerwerk T1 - Aspects of the testing of ore volume changes in damp masonry PY - 1983 VL - 36 IS - 7 SP - 339 EP - 349 PB - Bauverlag CY - Gütersloh AN - OPUS4-36747 LA - mul AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Niesel, Konrad T1 - Critères pour le comportement à l'altération de pierres en oeuvre, compte tenu d'une sélection de valeurs caractéristiques PY - 1981 IS - 2 SP - 6 EP - 14 AN - OPUS4-31785 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niesel, Konrad ED - Rossi-Manaresi, R. T1 - Durability of porous building stone - importance of judgement criteria related to its structure T2 - International Symposium on Conservation of Stone II CY - Bologna DA - 1981-10-27 PY - 1981 N1 - Serientitel: Rapporti della Soprintendenza per i Beni Artistici e Storici per le Province di Bologna, Ferrara, Forli e Ravenna – Series title: Rapporti della Soprintendenza per i Beni Artistici e Storici per le Province di Bologna, Ferrara, Forli e Ravenna IS - 31 SP - 47 EP - 57 CY - Bologna AN - OPUS4-31797 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Niesel, Konrad T1 - Kriterien für das Verwitterungsverhalten von Bausteinen unter Berücksichtigung ausgewählter Materialkennwerte PY - 1980 SN - 0344-5089 VL - 5 SP - 213 EP - 227 PB - Staatliche Museen CY - Berlin AN - OPUS4-31799 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -