Sasan Motaghed - Department of Civil Engineering, Faculty of Engineering, Behbahan Khatam Alanbia University of Technology,Behbahan, Iran
Nasrollah Eftekhari - Faculty of Technology and Mining, Yasouj University, Choram, Iran,
Sahar Kazemifard - Department of Civil Engineering, Faculty of Engineering, Behbahan Khatam Alanbia University of Technology,Behbahan, Iran

The maturity test is a method for estimating the in-situ compressive strength of concrete. Beforeusing the method to determine the properties of the desired concrete, it is necessary to perform a standardcalibration process as one of the requirements of the maturity test. The standard calibration process is bothtime-consuming and costly. According to the maturity test standards, this process should be repeated foreach concrete mix design. The requirement has become a significant impediment to the widespread use ofthe maturity method. In this paper, the early age calibration method has been tested for ۵ fiber selfcompactingconcrete mix designs. According to the research, the strength-maturity curve based on the ۲-day and ۳-day strength values has an error of less than ۶%. The average error is less than ۳%. These resultsshow that the early ages calibration method has been able to accurately produce the strength-maturitycalibration curve in fiber reinforced self-compacting concrete.

Fibre self-compacting concrete, Early ages calibration, strength-maturity curve,strength-maturity scale factor.