Computers and Concrete

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P-value significance level test for high-performance steel fiber concrete (HPSFC)

  • Abubakar, Abdulhameed U. (Department of Civil Engineering, Eastern Mediterranean University (EMU)) ;
  • Akcaoglu, Tulin (Department of Civil Engineering, Eastern Mediterranean University (EMU)) ;
  • Marar, Khaled (Department of Civil Engineering, Eastern Mediterranean University (EMU))
  • Received : 2017.08.15
  • Accepted : 2018.01.08
  • Published : 2018.05.25
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Abstract

Statistical analysis has found useful application in the design of experiments (DOE) especially optimization of concrete ingredients however, to be able to apply the concept properly using computer aided applications there has to be an upper and lower limits of responses fed to the system. In this study, the production of high-performance steel fiber concrete (HPSFC) at five different fiber addition levels by volume with two aspect ratios of 60 and 83 were studied under two curing methods completely dry cured (DC) and moist cured (MC) conditions. In other words, this study was carried out for those limits based on material properties available in North Cyprus. Specimens utilized were cubes 100 mm size casted and cured for 28 days and tested for compressive strength. Minitab 18 statistical software was utilized for the analysis of results at a 5 per cent level of significance. Experimentally, it was observed that, there was fluctuation in compressive strength results for the two aspect ratios and curing regimes. On the other hand P-value hypothesis evaluation of the response showed that at the stated level of significance, there was a statistically significant difference between dry and moist curing conditions. Upper and lower limit values were proposed for the response to be utilized in DOE for future studies based on these material properties. It was also suggested that for a narrow confidence interval and accuracy of the system, future study should increase the sample size.

Keywords

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