Experimental and Informational Modeling Study on Flexural Strength of Eco-Friendly Concrete Incorporating Coal Waste

The results show that concrete incorporating 3% recycled coal waste could be a competitive and eco-efficient alternative in construction activities while attaining a superior flexural strength of 6.7 MPa

Farshad Dabbaghi; Maria Rashidi; Moncef L. Nehdi; Hamzeh Sadeghi; Mahmood Karimaei; Haleh Rasekh; Farhad Qaderi

2021

Scholarcy highlights

  • Coal is considered one of the prevalent sources of energy production worldwide.its exploitation and extraction have caused massive waste materials
  • More than two million tons of coal waste material are vacated around factories, and this amount is rising rapidly due to the ascending trend of exploitation and exploration
  • To mitigate the limitations of destructive tests deployed in the previous sections, an artificial neural network model is deployed to predict the flexural strength of the eco-efficient concrete made with coal waste
  • An extensive experimental study was carried out to explore the effects of adding waste coal to concrete
  • An experimental database was developed to capture the effects of the mixture design parameters and waste coal addition on the flexural strength of concrete
  • No significant difference in fracture surfaces was observed between specimens made with or without waste coal
  • The database was used to train a hybrid arterial neural network coupled with response surface methodology to predict the flexural strength of concrete mixture incorporating coal waste
  • Based on the experimental and computational intelligence modeling work conducted, the following conclusions can be drawn:

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