Specialist Units and Expertise

Laboratory of Press Materials

ADDRESS
University of Forestry, 10 Kliment Ohridski Blvd., Sofia 1797, Bulgaria
Department of Mechanical Wood Technology, telephone: +359 2 91 907 / 323
e-mail: victor_savov@ltu.bg

HEAD OF THE LABORATORY
Assoc. Prof. Eng. Viktor Savov

SERVICES
1. Practical and laboratory work of students and PhD students;
2. Scientific research related to press materials from wood and lignocelluloses materials;
3. Expertise and consultations;
4. Services:

Determining the type of Fiberboard, according to EN 316:2009;

Determining the type of Particleboard, according to EN 309:2006;

Determination of conformity of the requirements to Fiberboard (according to EN 622-1:2004 “Fiberboards - Specifications - Part 1: General requirements”, EN 622-2:2004”Fibreboards - Specifications - Part 2: Requirements for hardboards”; EN 622-3:2004 “Fiberboards - Specifications - Part 3: Requirements for medium boards”; EN 622-4:2010 “Fiberboards - Specifications - Part 4: Requirements for softboards”; EN 622-5:2010 „ Fiberboards - Specifications - Part 5: Requirements for dry process boards (MDF)”);

Determination of conformity of the requirements for Particleboard (according to EN 312:2012);

Determination of conformity to requirements for plywood according to EN 636:2012);

Determination of the moisture content of the Wood-base panels (according to EN 322:1998);

Determination of the density of the Wood-base panels (according to EN 323:2007);

Determining the dimension of boards (according to EN 324:2001);

Elaboration of schemes for sampling and cutting of test pieces and expression of test results for Wood-base panels (according to EN 326-1:2001);

Determination of dimensions of test pieces for Wood-base panels (according to EN 325:2012);

Determination of characteristic 5-percentile values and characteristic mean value of Wood-base panels (according to EN 1058:2010);

Determination of swelling in thickness after immersion in water of particleboard and fiberboard (according to EN 317:2002);

Determination of water absorption of Wood-base panels;

Determination of dimensional change of Wood-base panels, associated with changes in relative humidity (according to EN 318:2002);

Determination of moisture resistance of Wood-base panels, under cyclic test conditions (according to EN 321:2004);

Determination of modulus of elasticity in bending (MOE) and of bending strength (MOR) of Wood-base panels (according to ЕN 310:1999);

Determination of tensile strength perpendicular to the plane of the particleboard and fiberboard (according to ЕN 319:2002);

Determination of surface soundness of Wood-base panels (according to EN 311:2005);

Determination of resistance to axial withdrawal of screws from particleboard and fiberboard (according to EN 320:2011);

Determination of according to requirements to technological chips for the production of particleboard and fiberboard (according to BNS 8597:1976);

Determination of pulp freeness by Shoper-Rigler methodology.

EQUIPMENT WITH WHICH THE LABORATORY DISPOSES IN CARRYING OUT THE SERVICES
Hydraulic Presses; Mixers; Facilities and equipment supporting teaching and research activities, as well as specialized equipment for standard tests of physical and mechanical properties of the composites of the timber and lignocelluloses raw-materials.

KEY WORDS:
Wood-base panels, Plywood, Particleboard, Fiberboard, wood and lignocelulloses raw-materials, physical and mechanical properties.

CONTACT PERSON
Assoc. Prof. Eng. Viktor Savov, telephone: +359 2 91 907/323;
e-mail: victor_savov@ltu.bg

Laboratory of Press Materials

Laboratory of Wood Science

Address:
10 Kliment Ohridski Blvd., Sofia 1797, University of Forestry,
Department of Mechanical Technology of Wood
telephone: +359 2 91 907/463
е-mail: woodscience@mail.bg

Head of the laboratory:
Assoc. Prof. PhD Nikolay Burdarov

Services provided by the laboratory:
1. Training of students
2. Research
3. Consultations
4. Services:

Determination of water content in physical and mechanical tests. (according to BDS 17204:1990 and BDS ISO 3130:1999).

Determination of linear and bulk drying. (according to BDS 17204: 1990 and standard of Council of Mutual Economic Assistance – CMEA 6089:1987).

Determination of linear and volume swelling. (according to BDS 17204: 1990 and standard of CMEA 6010:1987).

Determination of density in physical and mechanical tests. (according to BDS 17204: 1990 and BDS ISO 3131:1999).

Determination of the static hardness of the wood. (according to standard of CMEA 2366:1980).

Determination of the ultimate tensile strength of the wood along the fibers. (according to standard of CMEA 816:1977).

Determination of ultimate strength in static bending of wood. (according to standard of CMEA 390:1976).

Determination of the tensile strength of the fibers of the wood. (according to standard of CMEA 816:1977).

Determination of the ultimate tensile strength transversely of the wood fibers. (according to standard of CMEA 816:1977).

Determination of the shear strength of shear along the fibers of the wood. (according to the standard of CMEA 814:1977)

Determination of the cut-off strength of the transverse fibers of the wood. (according to standard of CMEA 814:1977)

Determination of the splitting resistance of the wood. (according to the standard of CMEA 2365:1980)

Determination of the resistance to removal of nails and screws. (according to the standard of CMEA 2364:1980).

Determination of the linear deformation modulus for static bending of wood. (according to standard of CMEA 1142:1978).

Determination of the dynamic modulus of linear deformation of wood. (according to standard of CMEA 1143:1978).

Determination of deficiencies in round and scraped materials according to the standard of CMEA 2017:1979; 2018:1979; 2019:1979; 320:1976; 321:1976; 391:1976.

Determination of tree species by their macroscopic features (according to BDS 12329:1984).

Determination of tree species by their microscopic features (according to BDS 12329:1984).

Equipment available in the laboratory:

microscopes, apparatus for preparation of microscopic preparations, apparatus for determining physical properties, stand for testing the mechanical properties of wood, apparatus for determining the dynamic modulus of linear deformation

Keywords:

wood structure, wood properties, wood defects, wood species, water content, linear and volume drying and swelling, wood density, wood hardness, compressive strength, static bending strength (MOR), tensile strength, tensile strength , splitting resistance, static linear deformation module (MOE), dynamic linear deformation module (Modul of Young).

Contact person:
Nikolai Bardarov, tel: (+359 2) 91 907/463, (+359 2) 91 907/433,
е-mail: niki_bardarov@ltu.bg

Specialist Units and Expertise

Specialist Units and Expertise

Laboratory of Press Materials

Laboratory of Press Materials

Laboratory of Wood Science

Faculties

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