Strength improvement for timber beams - uses fibre bundles and webbing embedded in grooves along longitudinal faces

摘要

The process is for the strengthening of timber or concrete construction elements. To increase strength, grooves (2) are cut into the beams, with the grooves at the lower sides increasing in depth towards the beam ends. The ends of the beams have recesses, into which bundles and/or webbing (3) are embedded or pressed. Epoxy resin with a hardener (4) s cast into the recesses, and these are then covered by an epoxy resin paste (5). To increase the pressure resistance, grooves cut into the top of the beams also contain fibre bundles or webbing and cast epoxy resin mixtures with a hardener and different fillers (4), e.g. quartz sand.