ABSTRACT
ABSTRACT: Delamination is a major problem when glulam beams are to be strengthened by attaching prestressed, high-strength fibres on the tensile face. In a COST Project, the authors analyse two possible solutions. The first solution approach involves the use of a special device to attach the prestressed fibre in stages starting from the centre of the beam. The second approach involves the development of a “ductile” adhesive to spread the prestressing force over a larger area at the ends of the beam. The tests with the prestressing device yielded satisfactory results. The tests with different adhesive mixes yielded some interesting results of a pioneering nature, however the anchorage strength fell short of expectations. Themes could be identified for more research work.
1 INTRODUCTION
