Analysis of kinds of flexural strengthening of joist construction slabs
DOI:
https://doi.org/10.3989/ic.1989.v40.i399.1514Abstract
Slabs are the most costly structural elements in a building, often accounting for more than 20 % of the cost of the building. Therefore, and as a continuation of previous works on columns and beams, the authors are working on a research project relative to the strengthening of slabs, both massive concrete slabs and those in joist construction form. This article presents the results of flexural strengthening carried out by attaching steel mesh to the bottom of joist construction slabs with adhesive mortar or shot concrete. Very good results were obtained, which are hard to explain, if it is taken into account that 85 % of the reinforcement is adhered to the porous concrete filling piedes between ribes which are of no significant strength in the calculation, and only 15 % to the resistant ribs bottoms.
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