Experimental investigations of wooden and concrete composite beams subject to long-term load

Opole University of Technology, Faculty of Civil Engineering and Architecture, Katowicka 48, 45-061 Opole, Poland

Corresponding author: m.czabak@po.opole.pl

Abstract

The issue of reinforcing wooden beams via their joining with a concrete upper slab is still being widely discussed in the literature of the problem. The paper is an extended version of the authors' previous research conducted in this subject matter for short-term static loads. The current work takes into account also a qualitative assessment of two-year behaviour of the structure based on the measurements of its creep, temperature and relative humidity of the ambient air in typical in-door conditions. The beams were 4-m long and subject to a total load of 10 kN. Their layers had crosssectional dimensions equal to 95 mm x 195 mm and 300 mm x 50 mm for the wooden rib and reinforced concrete upper slab, respectively.