Introduction

Our research focuses on studies of the load-bearing capacity and stability of wooden structures.

The topics of research work are the fire resistance of wooden structures, including the behavior of glue joints, covering materials and insulation materials in fire, the development of joints in wooden structures and the reuse of wooden structural materials.

In fire resistance studies, our researchers deal with, among other things, the integrity of glue joints in engineered wood (glulam, cross-laminated timber, I-beams) at high temperatures. The research group's researchers have developed a test method for glues and calculation methods for calculating the fire resistance of engineered wood, taking into account the behavior of the glue joint.

The research group has one of the leading roles in updating the European design standards for fire resistance of wooden structures. The research group has also been active in the preparation of Estonian, European and global professional manuals.

Membership

Prof. Alar Just Professor of Building Structures
Dr. Eero Tuhkanen

Head of the Building Constructions Laboratory

Dr. Mattia Tiso Scientist
Dr. Johanna Butterfly Scientist
Katrin Nele Mäger Doctoral student-junior researcher
Jane Liise Vihmann Doctoral student-junior researcher

Selected publications

dx.doi.org/10.1002/fam.3069

holz.vaka.kit.edu/inter/55-16-01.pdf

www.scopus.com/record/display.uri?origin=inward&partnerID=40&eid=2-s2.0-85120750066&featureToggles=FEATURE_NEW_DOC_DETAILS_EXPORT:1

doi.org/10.1016/j.engstruct.2021.113091

dx.doi.org/10.1002/fam.2798

dx.doi.org/10.1016/j.firesaf.2017.09.006

doi.org/10.22382/wfs-2018-041

Technical ability

Ehitus Mäemaja - laboratory of construction structures

  • The area with a power floor for load tests is 8 × 23 m, with a height of 5.4 m. Network of anchor points 1.2 × 1 m, with a maximum permissible load per point of 250kN
  • Two EPZ-D hydraulic cylinders controlled separately or synchronized with a maximum load of ±200kN and ±400kN, working stroke 250mm.
  • Real-time data acquisition and data processing equipment QuantumX MX840B, MX1615B (HBM) and LVDT sensors.
  • Catman data acquisition software.
  • Universal electromechanical testing device with parallel grippers LFM-600 kN
  • Manually operated Enerpac RC506 hydraulic cylinders with separate Zemic force sensors.
  • L-shaped (5 × 4.25 m), 5.4 m high force wall with a network of anchor points 1 × 1 m, with a maximum permissible load per point of 250kN

Current projects

LEAAV23090 Strength and stiffness properties of wood for fire resistance calculations

VA23064 Effective joints for prefabricated wooden modular houses to help rebuild Ukraine

LEAEV23087 Fire resistance of Stora Enso cross-laminated timber according to Eurocode 2.0

PRG2213 Development of wood-bioglue systems in sustainable and safe engineered wood products used in construction

VHE23055 State-of-the-art demonstration of real and affordable sustainable building solutions considering full life-cycle performance and advanced circular economy