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Statistical models for mechanical properties of UHPC using response surface methodology

  • Mosaberpanah, Mohammad A. (Department of Civil Engineering, Girne American Univesity (GAU)) ;
  • Eren, Ozgur (Department of Civil Engineering, Eastern Mediterranean University (EMU))
  • Received : 2016.12.01
  • Accepted : 2017.02.17
  • Published : 2017.06.25

Abstract

One of the main disadvantages of Ultra High Performance Concrete exists in the large suggested value of UHPC ingredients. The purpose of this study was to find the models mechanical properties which included a 7, 14 and 28-day compressive strength test, a 28-day splitting tensile and modulus of rupture test for Ultra High Performance Concrete, as well as, a study on the interaction and correlation of five variables that includes silica fume amount (SF), cement 42.5 amount, steel fiber amount, superplasticizer amount (SP), and w/c mechanical properties of UHPC. The response surface methodology was analyzed between the variables and responses. The relationships and mathematical models in terms of coded variables were established by ANOVA. The validity of models were checked by experimental values. The offered models are valid for mixes with the fraction proportion of fine aggregate as; 0.70-1.30 cement amount, 0.15-0.30 silica fume, 0.04-0.08 superplasticizer, 0.10-0.20 steel fiber, and 0.18-0.32 water binder ratio.

Keywords

References

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