Computers and Concrete

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Numerical approach to predict stress-strain model for tie confined self curing self compacting concrete (TCSCSCC)

  • P Swamy Naga Ratna Giri (Department of Civil Engineering, National Institute of Technology) ;
  • Vikram Tati (Department of Civil Engineering, National Institute of Technology) ;
  • Rathish Kumar P (Department of Civil Engineering, National Institute of Technology) ;
  • Rajesh Kumar G (Department of Civil Engineering, National Institute of Technology)
  • Received : 2023.05.26
  • Accepted : 2023.09.15
  • Published : 2024.02.25
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Abstract

Self-Curing Self Compacting Concrete (SCSCC), is a special concrete in contemporary construction practice aimed at enhancing the performance of structural concrete. Its primary function is to ensure a sufficient moisture supply that facilitates hydration along with flow, particularly in the context of high-rise buildings and tall structures. This innovative concrete addresses the challenges of maintaining adequate curing conditions in large-scale projects, maintaining requisite workability, contributing to the overall durability and longevity of concrete structures. For implementing such a versatile material in construction, it is imperative to understand the stress-strain (S-S) behaviour. The primary aim of this study is to develop the S-S curves for TCSCSCC and compare through experimental results. Finite element (FE) analysis based ATENA-GiD was employed for the numerical simulation and develop the analytical stress-strain curves by introducing parameters viz., grade of concrete, tie diameter, tie spacing and yield strength. The stress ratio and the strain ratios are evaluated and compared with experimental values. The mean error is 1.2% with respect to stresses and 2.2% in case of strain. Finally, the stress block parameters for tie confined SCSCC are evaluated and equations are proposed for the same in terms of confinement index.

Keywords

Acknowledgement

The Ministry of Education, India provided support for the Post Doctoral Fellow at National Institute of Technology Warangal, where this study was carried out.

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