PD Dr. Christian Brischke


Research interests

  • Durability of wood and wood-based products
  • Chemical wood protection
  • Thermal and chemical wood modification
  • Service-life prediction and performance classification
  • Moisture monitoring of structures

Projects

  • CemSleeper - Cement coating of wood for railway applications
  • ClickDesign - Delivering fingertip knowledge to enable service life performance specification of wood
  • CEMWOGEO - Cement coating of wood for geotechnical applications
  • SysSchwelle - Development and market launch of an innovative F-system sleeper
  • WPC Bio Deg - Influence of weathering on the biological ageing / durability of wood plastic composites
  • DURATEST - Development of procedures for sampling, testing, and classification to determine the biological durability of wood and wood-based products

Responsibilities

  • Laboratory and field tests – durability of wood and wood products
  • Contact person for biological investigations
  • Determination of effectiveness limit of wood preservatives
  • Mould and blue stain tests

Committee work

  • Editorial Board der Fachzeitschrift ‘LES / WOOD‘ (seit 2019)
  • Task Force, Performance Classification of COST Action E37 ‘Sustainability through new technologies for enhanced wood durability’ (2005-2008)
  • Communication Committee for International Research Group on Wood Protection (IRG-WP) (since 2011)
  • Steering Committee for International Conference on Durability of Building Materials and Components (since 2001)
  • Northern-European Network on Wood Science and Engineering (WSE), National Coordinator (Germany – since 2012)
  • Management Committee COST Action FP 1303 ‘Performance of Bio-Based Building Materials’, Vice-Chairman (2013-2017)
  • Scientific Program Committee - International Research Group on Wood Protection (IRG-WP), Chair Section 2 ‘Test Methodology and Assessment’ (since 2014)
  • Management Committee COST Action FP 1407 ‘Understanding wood modification through an integrated scientific and environmental impact approach (ModWoodLife)’, Substitute (2015-2019)
  • Editorial Board for Fachzeitschrift ‘Drvna Industrija’ (‘Wood Industry’) (since 2016)
  • Editorial Board for journal ‘Wood Material Science and Engineering‘ (since 2017)
  • NA 042 DIN Wood and Furniture Standards Committee NA 042-03-06 AA Mirror committee working on CEN/TC 38 and ISO/TC 165/SC 1 Durability of wood and wood products (since 2017)

Teaching

Courses presented


Supervision of student theses (for reasons of data protection law, the authors names are withheld)

PhD

    2019

  • Service life planning with timber – climate and design related considerations (Georg-August-Universität Göttingen, Göttingen, Deutschland)
  • Timber frame walls with brick veneer cladding – Reliability to fungal decay (University Gent, Faculty of Bioscience Engineering, Department of Forest and Water Management, Gent,
  • Belgium & KU Leuven, Arenberg Doctoral School, Leuven, Belgium)
  • Performance of wood-polypropylene composites made of alternative wood sources (Georg-August-Universität Göttingen, Göttingen, Deutschland)
  • Dimensionsstabile und pilzresistente Furnierwerkstoffe durch Zellwandmodifizierung mit niedermolekularem Phenol-Formaldehyd (Georg-August-Universität Göttingen, Göttingen, Deutschland)
  • Verbesserung der Spanplatteneigenschaften durch Veränderung der Leimverteilung mittels Plasmabehandlung des Holzes (Georg-August-Universität Göttingen, Göttingen, Deutschland)
  • Relationship between laboratory and field tests in service life assessment of wood-based materials (University of Ljubljana, Biotechnical Faculty, Ljubljana, Slovenia)
  • Färbung und Farbstabilisierung von Massivholz mit niedrigmolekularen Melamin- und Phenol-Kondensationsharzen (Georg-August-Universität Göttingen, Göttingen, Deutschland)
  • Process optimization of thermal modification of Chilean Eucalyptus nitens plantation wood (Georg-August-Universität Göttingen, Göttingen, Deutschland)
  • 2018

  • Durability of wood in ground contact: Modelling the effect of abiotic and biotic factors (Georg-August-Universität Göttingen, Göttingen, Deutschland)
  • Strength grading and selected strength properties of European hardwoods (Georg-August-Universität Göttingen, Göttingen, Deutschland)
  • 2016

  • Suitability of test methods to characterize the durability of timber products in various exposure situations under particular consideration of their moisture performance (Leibniz Universität Hannover, Fakultät für Architektur und Landschaft, Hannover)
  • 2015/16

  • Experimental investigation of the hygro-mechanical bahvior of wood-based panels (University Gent, Faculty of Bioscience Engineering, Department of Forest and Water Management, Gent, Belgium)
  • Non-destructive evaluation of wood, coating and fungi by attenuated total reflectance Fourier transform infrared spectroscopy (Norwegian University of Science and Technology, Faculty of Engineering Science and Technology, Department of Civil and Transport Engineering, Trondheim, Norway)
  • 2014

  • Relation between fungal colonization and changes of mechanical and chemical properties of wood exposed outdoors (University of Ljubljana, Biotechnical Faculty, Ljubljana, Slovenia)
Masters theses

    2019

  • Birch structural timber – Distribution of strength related wood characteristics and their influence on bending properties
  • Influence of specimen size and shape on the durability of wood in laboratory tests
  • Dichte, Struktur und Zug – Integrität und Biegeeigenschaften von Lärchenholz (Larix decidua MILL.) in Abhängigkeit von der Lage im Stamm
  • Bohrwiderstandsmessungen zur Detektion von Pilzbefall an phenolformaldehydmodifiziertem Buchen-LVL
  • Untersuchungen zum Vermögen holzzerstörender Pilze, chemisch modifiziertes Holz zu durchwachsen
  • Near-pith Beech lumber – Investigations into the distribution of strength-relevant wood characteristics and their influence on bending properties
  • 2018

  • Investigations into material resistance and moisture behaviour of wood after modification with DMDHEU
  • Investigations into material resistance and moisture behaviour of woods treated with protective substances
  • Guyana’s wood products sector: structure, characteristics and opportunities on the European Union market for Guyana’s wood products
  • 2016

  • Investigations into the durability of juniper, mountain ash, bird cherry and yew
  • Comparative studies on the effects of weathering and rot damage on wooden facades and terraces
  • Comparative test on the mechanical resistance of inorganic and organic building materials
  • Comparative study of humidity limits concerning fungal degradation of wood components

    2015

  • Investigation into the suitability of fungi isolated outdoors in determining the durability of wood

    2014

  • Moisture performance of wood outdoors: a study using 27 different test methods

    2013

  • Colour limit determination for total colour changes based on the subjective perception of colour changes in various colour combinations

    2012

  • Climatic impacts on the moisture performance of wooden decking and facades (Leibniz Universität Hannover)
  • Mechanical investigations into selected woods for use in hydraulic engineering (Leibniz Universität Hannover)
  • Development of a characteristic-based database (curve) for electrical wood moisture content measurement (Leibniz Universität Hannover)
  • Comparative wood durability studies in the field with particular reference to the material climate (Leibniz Universität Hannover)
  • Modelling the influence of thermal modification on the electrical conductivity of wood (Leibniz Universität Hannover)
  • 2011

  • Investigations into the influence of different climate parameters on the moisture dynamics of wooden components (Leibniz Universität Hannover)
  • Investigations into the effectiveness of selected structural components and protective measures for exterior wooden components (Leibniz Universität Hannover)

    2010

  • Determination of the expected service life of typical wooden exterior components on the basis of dose-response relationships (Leibniz Universität Hannover)
  • Determination of the influence of structural components on the expected service life of wooden facades (Leibniz Universität Hannover)
  • Characterization of weather-related property changes in spruce wood (Picea abies Karst.) in common utility dimensions (Leibniz Universität Hannover)
  • Investigations into the influence of various site parameters on the service life of wood in ground contact (Leibniz Universität Hannover)
Project theses

    2008

  • Wood moisture content measurement using miniature data loggers on thermally modified and unmodified native wood species (Leibniz Universität Hannover)
  • Methods for determining the durability of wood used outdoors above ground (Leibniz Universität Hannover)
  • Case study on the service life of oak in ground contact (Leibniz Universität Hannover)
Bachelor theses

    2019

  • Feuchteverhalten von mit wässrigen und öligen Schutzmitteln imprägnierter Buche
  • Untersuchung des Einflusses einer Plasmabehandlung bezüglich der Wasseraufnahme von acetylierten Hölzern
  • Beeinflussung ausgewählter statischer und dynamischer Eigenschaften von mit verschiedenen glyoxal-basierten Vernetzern behandeltem Massivholz – Ein Methodenvergleich
  • Ermittlung des Bohrwiderstandes unter Variation des Bohrwinkels an Vollholz der Buche, Eiche, Pappel und Kiefer
  • Untersuchung des Wuchsverhaltens holzzerstörender Basidiomyceten in Abhängigkeit vom Kultursubstrat
  • Analyse der Schimmelpilzresistenz verschiedener Holzwerkstoffe – Ein Methodenvergleich
  • Untersuchung der Dauerhaftigkeit des Holzes von Metasequoia glyptostroboides und Chamaecyparis lawsoniana
  • Untersuchungen zum Querdruckverhalten von Birken-Bauholz
  • Untersuchung zum Einfluss von Wasserhaltekapazitäten und Feuchte von Böden auf die Abbaurate ausgewählter Hölzer
  • Konzeption und Fertigung eines Prüfstandes zur Ermittlung der Spritzwasserbelastung von Holzbauteilen
  • Kartographische Darstellung des feuchteinduzierten Befallsrisikos von Holzbauteilen in der Schweiz
  • Untersuchung hydraulischer Effekte durch Imprägnierung von Holz mit Ölen und Wachsen
  • Langzeit-Performance von mit Kombinationen aus Melaminharz (MF-Harz) und Metall-Komplex-Farbstoffen behandelten (modifizierten) Hölzern
  • Influence of mechanical and physical properties of DMDHEU modified wood with the addition of selected silicon and wax compounds
  • Structural integrity and dynamic strength of wood-polymer composites
  • Comparative studies on the moisture absorption and moisture dissipation behaviour of wood in outdoor applications
  • 2018

  • Investigations into the influence of water holding capacity and soil moisture on the moisture content of selected woods
  • Dynamic strength of wood - Creation of a database for native and foreign tree species
  • Conceptualisation and production of wooden structures to determine the influence of microclimate and material choice on the moisture-induced infestation risk
  • Durability of sapwood and its impact on the durability of heartwood in outdoor applications
  • Comparative studies on the moisture absorption and moisture dissipation behaviour of untreated and various chemically modified woods
  • Comparative study on the durability of native shoot wood and sapwood
  • Creation of resistance curves for electronic moisture content measurement of modified woods
  • 2017

  • Comparison of methods used to determine the abrasion resistance of differently modified woods (Georg-August-Universität Göttingen)
  • Investigation into the moisture performance of compressed and thermally modified wood for outdoor use (Leibniz Universität Hannover)
  • Changes in the electrical conductivity of wood attacked by white and brown rot fungi (Leibniz Universität Hannover)
  • Investigations into the cracking tendency of wood-based materials and the influence of cracks on the moisture content of wooden components of various dimensions (Leibniz Universität Hannover)
  • 2016

  • Laboratory screening of thermo-mechanically densified and thermally modified timbers for resistance to the marine borer Limnoria quadripunctata (Leibniz Universität Hannover)
  • Creation of resistance characteristics for electrical moisture content measurement in the giga-ohm range (Leibniz Universität Hannover)
  • Investigation into the effectiveness of structural measures for the protection of wooden components (Leibniz Universität Hannover)
  • Investigations into mechanical surface properties of compressed and thermally modified woods for terrace construction (Leibniz Universität Hannover)
  • 2015

  • Investigations into the durability of common reed against brown rot, white rot, and mildew fungi (Leibniz Universität Hannover)
  • Relationship between change in mass and wood moisture content balance of modified wood (Leibniz Universität Hannover)
  • 2014

  • Wetting ability of wood – method development and comparative studies (Leibniz Universität Hannover)
  • Investigation into the acceptance of coating damages on wooden components (Leibniz Universität Hannover)
  • Investigations into the influence of coating damages on the moisture content of wooden components (Leibniz Universität Hannover)
  • Decay assessment of wood stakes exposed in-ground (Leibniz Universität Hannover)
  • In-ground durability of wood-based products – Comparative assessment of graveyard field tests and terrestrial microcosms (Leibniz Universität Hannover)
  • 2013

  • Influence of chemical stress from different impregnation solutions on the structural integrity of wood (Leibniz Universität Hannover)
  • Thermal Modification of common reed (Phragmites communis Trin.,Leibniz Universität Hannover)
  • Stacking method for testing the durability of wood used outdoors, above ground - determination of moisture content (Leibniz Universität Hannover)
  • 2012

  • Comparative determination of the resistance of selected conifersto brown rot fungi using laboratory degradation tests and in-field soil burial tests (Leibniz Universität Hannover)
  • Development of a system for continuous in-field gravimetric wood moisture content measurement (Leibniz Universität Hannover)
  • Case study on damage caused by wood-degrading fungi on wooden window frames in a student dorm (Leibniz Universität Hannover)
  • Comparative study on the moisture performance and durability of wood-based materials under different test conditions (Leibniz Universität Hannover)
  • Investigation into the influence of test specimen size and shape on the moisture dynamics of wood (Leibniz Universität Hannover)
  • Comparative determination of the resistance of selected hardwoods to white rot fungi using laboratory degradation tests and in-field soil exposure tests (Leibniz Universität Hannover)
  • Microscopy studies of timber exposed in soil (Leibniz Universität Hannover)
  • 2011

  • Examination of the subjective perception of colour changes (Leibniz Universität Hannover)
  • Investigations into the effect of splash water on the moisture content of wooden cladding boards (Leibniz Universität Hannover)
  • Cartographic representation of climate-related hazard zones for wooden components in outdoor areas (Leibniz Universität Hannover)
  • Influence of thermal treatment on the structural integrity of wood (Leibniz Universität Hannover)
  • 2010

  • Study on the effectivity of design details and structural protection measures for timber elements used outdoors (Leibniz Universität Hannover)
  • Determination of the moisture induced decay risk for wooden components based on wood species (Leibniz Universität Hannover)
  • Determination of resistance characteristics for electrical wood moisture content measurement of different sap- and heartwoods (Leibniz Universität Hannover)
  • Effect of coatings on thermal properties of wooden components (Leibniz Universität Hannover)
  • Development of a method for dynamic hardness testing of wood (Leibniz Universität Hannover)
  • Investigations into the suitability of artist-orientated paints for outdoor use (Leibniz Universität Hannover)
  • 2009

  • Determination of the thermal flux of various outdoor flooring materials (Leibniz Universität Hannover)
  • Decay damaged wooden windows - A case study concerning several barracks buildings (Leibniz Universität Hannover)
  • Determination of the driving rain loads on wooden facades (Leibniz Universität Hannover)
  • Determination of the moisture content for wooden components of various dimensions (Leibniz Universität Hannover)
  • Moisture-induced decay risk on various fence element designs made from Norway spruce (Picea abies Karst.) (Leibniz Universität Hannover)
  • 2008

  • Design and production of typical wooden components for outdoor use to determine the moisture-induced risk of decay (Leibniz Universität Hannover)
  • Investigation into the influence of weathering on selected mechanical properties of wood (Leibniz Universität Hannover)
  • Design and installation of a test field to investigate the durability of wood in ground contact (Leibniz Universität Hannover)

Publications