Assessment of construction errors in execution of reinforced concrete T-beams


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Assessment of construction errors in execution of reinforced concrete T-beams

EL-Said Abd-Allah Bayoumi1,2,*, Mohamed Abdel-Azeem Eliwa3, Ahmed Gomaa Asran3

HIGHLIGHTS

  • The construction errors in execution of concrete T-beams were observed.
  • The impact level of misplacement of slab reinforcement was studied.
  • The effect of irregular arrangement of slab reinforcement was investigated.
  • Toughness of all specimens was determined.
  • The change in bar diameter of slab reinforcement was observed.

ABSTRACT

The study investigates the effects of the construction errors during the execution of concrete T-beams. Rarely does a month pass without reading in local newspapers about building failures and collapse in Egypt and other parts of the world that led to fatalities and injuries due to human errors. Eight specimens of T-beams were designated to simulate the possible defects in the field, like the impact of misplacement of slab reinforcement, irregular arrangement of slab reinforcement and the change in bar diameter of slab reinforcement on the structural behavior of T-beam sections. A control beam was cast for comparison and the measurements of various parameters including deflections, strains of reinforcement steel and propagation of cracks were made to evaluate to what extent these practice faults influence the behavior of reinforced concrete (RC) tested specimens. Results from an experimental investigation indicated that the faulty placement of slab reinforcement leads to a lower bending moment capacity of the slab (brittle behavior) and the steel strain of slab decreases with the decrease of height of slab reinforcement. The irregularity of the reinforcing bars in concrete slab affected the ultimate load of the slab. Also, it was found that well-arranged distribution of reinforcement improves the ductile behavior of the slab and reduces the corresponding deflections. The minimum bar diameter for the reinforcement of slab is 8 mm because the 6 mm diameter reinforcement was found to be weak in resistance to the loads. The quality assurance is very important to reduce the construction errors.

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To cite this article: Bayoumi EA, Eliwa MA, Asran AG. Assessment of construction errors in execution of reinforced concrete T-beams. Journal of Advanced Civil Engineering Practice and Research 2018;6:8-17.

To link this article: http://ababilpub.com/download/jacepr6-3/