TY - CONF A1 - Borho, N. A1 - Schoknecht, Ute T1 - Auswaschungen nach EN 16105 und Dynamic Surface Leaching Test T2 - Kolloquium "Auswaschungen an beregneten Fassaden" CY - Berlin, Germany DA - 2011-11-15 PY - 2011 AN - OPUS4-25307 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Schoknecht, Ute A1 - Sommerfeld, Thomas A1 - Borho, N. A1 - Bagda, E. T1 - Interlaboratory comparison for a laboratory leaching test procedure with facade coatings N2 - Façade coatings are exposed to weathering. Driving rain events can cause façade runoff bearing the potential to release substances from the coating. In order to derive reliable and reproducible information about this so-called leaching (emission into water), a laboratory test method has been developed, that has been published as European Standard EN 16105:2011. An interlaboratory comparison has been performed with 8 participants in order to validate the test method. This article describes the test results that reveal statistics on the quality of the test method and allows further insights to the leaching mechanism in coatings. KW - Biocide KW - Leaching test KW - Façade coating KW - Construction Products Regulation KW - Biocidal Products Directive PY - 2013 U6 - https://doi.org/10.1016/j.porgcoat.2012.10.001 SN - 0300-9440 SN - 1873-331X SN - 0033-0655 VL - 76 IS - 2-3 SP - 351 EP - 359 PB - Elsevier B.V. CY - Lausanne AN - OPUS4-27554 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Bagda, E. A1 - Borho, N. A1 - Schoknecht, Ute T1 - Measuring the release - Leaching of biocides from facade coatings N2 - Facades are attacked by algae and fungi during weathering, impairing the surfaces visually and leading to long-term damage. To prevent this, appropriate biocides are used in facade coatings. These can be washed out during weathering, especially when it rains. A standardized laboratory procedure to determine the amount of biocides released under practical conditions has been developed and is accessible as European Standard FprEN 16105. KW - Leaching KW - Fassadenbeschichtungen KW - prEN 16105 KW - Testparameter KW - INS-Projekt PY - 2011 SN - 0930-3847 VL - 06 SP - 33 EP - 37 PB - Vincentz CY - Hannover AN - OPUS4-23829 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hjelmar, O. A1 - Wahlström, M. A1 - Comans, R. A1 - Kalbe, Ute A1 - Grathwohl, P. A1 - Mehu, J. A1 - Schiopu, N. A1 - Hyks, J. A1 - Laine-Ylijoki, J. A1 - Van Zomeren, A. A1 - Krüger, Oliver A1 - Schoknecht, Ute A1 - Wendel, T. A1 - Abdelghafour, M. A1 - Borho, N. ED - Arm, M. ED - Vandecasteele, C. ED - Heynen, J. ED - Suer, P. ED - Lind, B. T1 - Robustness validation of two harmonized European leaching tests for assessment ot the leaching of construction products, including waste-based construction materials T2 - WASCON 2012 CY - Gothenburg, Sweden DA - 0201-05-30 KW - Tank leaching test KW - Percolation test KW - Robustness validation KW - Construction products PY - 2012 SP - 1 EP - 5(?) PB - ISCOWA and SGI AN - OPUS4-26966 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Schoknecht, Ute A1 - Tietje, O. A1 - Borho, N. A1 - Burkhardt, M. A1 - Rohr, M. A1 - Vollpracht, A. A1 - Weiler, L. T1 - Environmental impact of construction products on aquatic systems - Principles of an integrated source-path-target concept N2 - Buildings exposed to water can release undesirable substances which, once transported to environmental compartments, may cause unwanted effects. These exposure pathways need to be investigated and included in risk assessments to safeguard water quality and promote the sustainability of construction materials. The applied materials, exposure conditions, distribution routes and resilience of receiving compartments vary considerably. This demonstrates the need for a consistent concept that integrates knowledge of emission sources, leaching processes, transport pathways, and effects on targets. Such a consistent concept can serve as the basis for environmental risk assessment for several scenarios using experimentally determined emissions. Typically, a source–path–target concept integrates data from standardized leaching tests and models to describe leaching processes, the distribution of substances in the environment and the occurrence of substances at different points of compliance. This article presents an integrated concept for assessing the environmental impact of construction products on aquatic systems and unravels currently existing gaps and necessary actions. This manuscript outlines a source–path–target concept applicable to a large variety of construction products. It is intended to highlight key elements of a holistic evaluation concept that could assist authorities in developing procedures for environmental risk assessments and mitigation measures and identifying knowledge gaps. KW - Construction products KW - Environmental impact KW - Assessment KW - Concept PY - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:b43-542175 SN - 2073-4441 VL - 14 IS - 2 SP - 1 EP - 19 PB - MDPI CY - Basel AN - OPUS4-54217 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Borho, N. A1 - Schoknecht, Ute T1 - Rundversuch zum Norm-Entwurf "Auswaschung von Bioziden aus Fassadenfarben und Putzen" T2 - Tagung "Auswaschung von Bioziden und Nanopartikeln aus Fassaden" CY - Dübendorf, Switzerland DA - 2009-05-14 PY - 2009 AN - OPUS4-19554 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - RPRT A1 - Tietje, O. A1 - Burkhardt, M. A1 - Rohr, M. A1 - Borho, N. A1 - Schoknecht, Ute T1 - Emissions- und Übertragungsfunktionen für die Modellierung der Auslaugung von Bauprodukten N2 - Auslaugung von Stoffen aus Bauteilen kann zu einer Belastung von Boden und Gewässern führen. Das Simulationsmodell COMLEAM (COnstruction Material LEAching Model) wurde eingesetzt, um die Stoffauswaschung besser zu verstehen und das damit verbundene Umweltrisiko besser einschätzen zu können. Emissionsfunktionen sind Bestandteil dieses Modells. Hier werden fünf verschiedenen Funktionen beschrieben, getestet und hinsichtlich ihrer Eignung für Prognosemodelle bewertet. KW - Emissionsfunktionen KW - Auswaschverlauf KW - Bauprodukt KW - Biozid KW - Modellierung PY - 2018 SN - 1862-4359 VL - 28 SP - 1 EP - 57 CY - Dessau-Roßlau AN - OPUS4-44735 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Urbanczyk, M.M. A1 - Bester, K. A1 - Borho, N. A1 - Schoknecht, Ute A1 - Bollmann, U.E. T1 - Influence of pigments on phototransformation of biocides in paints N2 - Biocides are commonly applied to construction materials such as facade renders and paints in order to protect them from microbial spoilage. These renders and paints are exposed to weathering conditions, e.g., sunlight and rain. Pigments are interacting intensively with the spectrum of the incoming light; thus, an effect of paint pigments on phototransformation rates and reaction pathways of the biocides is hypothesized. In this study, the phototransformation of four commonly used biocides (carbendazim, diuron, octylisothiazolinone (OIT) and terbutryn) in four different paint formulations differing solely in pigments (red and black iron oxides, white titanium dioxide, and one pigment-free formulation) were investigated. Paints surfaces were irradiated under controlled conditions. The results show that biocides degrade most rapidly in the pigment-free formulation. The degradation in the pigment-free formulation followed a first-order kinetic model with the respective photolysis rate constants: kp,Diuron=0.0090 h−1, kp,OIT=0.1205 h−1, kp,Terbutryn=0.0079 h−1. Carbendazim concentrations did not change significantly. The degradation was considerably lower in the pigment-containing paints. The determination of several phototransformation products of terbutryn and octylisothiazolinone showed different transformation product ratios dependent on the pigment. Consequently, pigments not only reflect the incoming light, but also interact with the biocide photodegradation. KW - OIT KW - Terbutryn KW - Indirect photolysis KW - Construction materials PY - 2019 U6 - https://doi.org/10.1016/j.jhazmat.2018.10.018 SN - 0304-3894 VL - 364 SP - 125 EP - 133 PB - Elsevier AN - OPUS4-46328 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -