×
Home Current Archive Editorial board
News Contact
Professional paper

ANALYSIS, COST ESTIMATION AND OPTIMIZATION OF REINFORCED CONCRETE SLAB STRENGTHENING BY STEEL AND CFRP STRIPS

By
Ramona Petrov ,
Ramona Petrov
Contact Ramona Petrov

Faculty of Civil Engineering Subotica, University of Novi Sad, Novi Sad, Serbia

Danica Goleš
Danica Goleš

Faculty of Civil Engineering, University of Novi Sad, Novi Sad, Serbia

Abstract

As a result of the planned change of use, the imposed load on the existing reinforced concrete mezzanine slab will be significantly increased, wherefore a diagnostics and assessment of the current state of the structure has been carried out. The control calculation showed that the slab does not have sufficient bearing capacity for the increased load. After qualitative analysis of possible strengthening methods, two methods were selected for detailed analysis: strengthening with steel strips and strengthening with carbon fiber-reinforced polimer (CFRP) plates.

The criterion for choosing the optimal solution was the total cost of the material. It has been shown that the total price of materials for strengthening with steel strips is almost 40% lower than the price of strengthening with CFRP plates. It has also been observed that, when using steel strips, the contribution of the price of adhesive in the total cost of material is extremely high. When varying the level of strengthening, for imposed loads from 3 to 7.5 kN/m2, the ratio of the total costs of materials for steel and CFRP strips ranges between 60 and 73% and shows a slight tendency to increase with the increasment of loads.

References

[{"id":5277,"citationNumber":null,"type":null,"title":"Temporary Technical Regulations.Construction book","DOI":null,"author":[],"issued":{"date-parts":["1960"]},"container-title":null,"volume":null,"issue":null,"page":null}]

[{"id":5278,"citationNumber":null,"type":"book","title":"Eurocode - Basis of structural design","DOI":null,"author":[{"given":"SRPS EN ","family":""}],"issued":{"date-parts":["1990"]},"container-title":null,"volume":null,"issue":null,"page":null}]

[{"id":5279,"citationNumber":null,"type":"book","title":"Eurocode - Basis of structural design - National Annex","DOI":null,"author":[{"given":"SRPS EN","family":""}],"issued":{"date-parts":["1990\/NA"]},"container-title":null,"volume":null,"issue":null,"page":null}]

[{"id":5280,"citationNumber":null,"type":"book","title":"Eurocode 1: Actions on structures - Part 1-1: General actions - Densities, self-weight, imposed loads for buildings","DOI":null,"author":[{"given":"SRPS EN ","family":""}],"issued":{"date-parts":["1991"]},"container-title":null,"volume":null,"issue":null,"page":null}]

[{"id":5281,"citationNumber":null,"type":"book","title":"Eurocode 2: Design of concrete structures - Part 1-1: General rules and rules for buildings","DOI":null,"author":[{"given":"SRPS EN ","family":""}],"issued":{"date-parts":["1992"]},"container-title":null,"volume":null,"issue":null,"page":null}]

[{"id":5282,"citationNumber":null,"type":"book","title":"Eurocode 2: Design of concrete structures - Part 1-1: General rules and rules for buildings - National Annex","DOI":null,"author":[{"given":"SRPS EN ","family":""}],"issued":{"date-parts":["1992-1-1\/NA"]},"container-title":null,"volume":null,"issue":null,"page":null}]

[{"id":5283,"citationNumber":null,"type":null,"title":"Concrete structures 4, Rehabilitation","DOI":null,"author":[{"given":"J.","family":"Radic"}],"issued":{"date-parts":["2010"]},"container-title":null,"volume":null,"issue":null,"page":null}]

[{"id":5284,"citationNumber":null,"type":null,"title":"Rulebook for building structures, Official Gazette of the RS","DOI":null,"author":[],"issued":{"date-parts":["52\/2020 i 122\/2020"]},"container-title":null,"volume":null,"issue":"89\/2019","page":null}]

[{"id":5285,"citationNumber":null,"type":"book","title":"Lectures of the course \"Maintenance, protection and rehabilitation of structures\", Master academic studies","DOI":null,"author":[{"given":"D.","family":"Gole\u0161"}],"issued":{"date-parts":["2022"]},"container-title":null,"volume":null,"issue":null,"page":null}]

[{"id":5286,"citationNumber":null,"type":null,"title":"Technical sheet Sika\u00ae CarboDur\u00ae S, [On the network]","DOI":null,"author":[],"issued":{"date-parts":["2023"]},"container-title":null,"volume":null,"issue":null,"page":null}]

[{"id":5287,"citationNumber":null,"type":null,"title":"Technical sheet Sika\u00ae CarboDur\u00ae S, [On the network]","DOI":null,"author":[],"issued":{"date-parts":["2023"]},"container-title":null,"volume":null,"issue":null,"page":null}]

[{"id":5288,"citationNumber":null,"type":null,"title":"Technical sheet Sika\u00ae CarboDur\u00ae E, [On the network]","DOI":null,"author":[],"issued":{"date-parts":["2023"]},"container-title":null,"volume":null,"issue":null,"page":null}]

[{"id":5289,"citationNumber":null,"type":null,"title":"[On the network]","DOI":null,"author":[{"given":"D.","family":"Najdanovic"}],"issued":{"date-parts":["2023"]},"container-title":null,"volume":null,"issue":null,"page":null}]

[{"id":5290,"citationNumber":null,"type":null,"title":"[On the network]","DOI":null,"author":[{"given":"MAPEI","family":""}],"issued":{"date-parts":["2023"]},"container-title":null,"volume":null,"issue":null,"page":null}]

[{"id":5291,"citationNumber":null,"type":null,"title":"SIKA\u00ae CARBODUR\u00ae FRP CALCULATION SOFTWARE","DOI":null,"author":[{"given":"SIKA","family":""}],"issued":{"date-parts":["2023"]},"container-title":null,"volume":null,"issue":null,"page":null}]

[{"id":5292,"citationNumber":null,"type":null,"title":"USER GUIDE, Sika\u00ae CarboDur\u00ae calculation software (2017). BASED ON TR55 (2012) AND EUROCODE 2. Sika\u00ae","DOI":null,"author":[],"issued":{"date-parts":["2017"]},"container-title":null,"volume":"2","issue":null,"page":null}]

[{"id":5293,"citationNumber":null,"type":null,"title":"Technical sheet Sikadur\u00ae-30, [On the network]","DOI":null,"author":[],"issued":{"date-parts":[null]},"container-title":null,"volume":null,"issue":null,"page":null}]

Citation

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 

Article metrics

Google scholar: See link

The statements, opinions and data contained in the journal are solely those of the individual authors and contributors and not of the publisher and the editor(s). We stay neutral with regard to jurisdictional claims in published maps and institutional affiliations.