Process and means for filling undesired cavities and cracks during the production of composite screed, supports, joists, prefabricated compound units, etc., consisting of concrete

摘要

During the production of screed and other structural parts consisting of concrete, cavities and cracks, which do not ensure 100% strength, often occur in the structural parts. Processes for filling such cracks, etc., the latter being filled by means of resin from the outside via dowels, produce unreliable results, are very expensive and cause a lot of dirt due to the resin. The disadvantages are eliminated by the introduction of a plastic hose into the part which is to be concreted, which hose is perforated and permits synthetic resin to be guided, by means of a pump, from the inside to hollow locations and cracks in the structural part in order to close up the latter, without harmful dust particles, air, etc. being able to penetrate during this sealing. The cracks which are visible from the outside (visible cracks) are closed off by a sealing composition which is removed again after the seal has hardened. In this arrangement, there is no dirt and no follow-up work.