TY - JOUR AU - 지남용 DA - 2011/06 PY - 2011 UR - https://www.scientific.net/AMR.250-253.1293 UR - http://hdl.handle.net/20.500.11754/40940 AB - This paper offers the model that can estimate the cementing efficiency of fly ash (k value) based on a mix proportion of concrete containing fly ash (FA). The prediction model was derived using various statistical analyses, based on a wide range of mix proportions and a number of strength test results of ready mixed concretes used in eight construction sites. The k value increases with increasing water-binder ratio. As the FA replacement ratios increase, the k value increases at FA replacement ratios of less than 15%, but decreases at ratios of 15% or more. The k values obtained from the cementing efficiency estimate model range from 0.1 to 2.1. PB - Stafa-Zurich; Trans Tech Publications KW - Cementing efficiency KW - Construction sites KW - Estimate model KW - Fly ash concretes KW - K-values KW - Mix proportions KW - Prediction model KW - Ready mixed concrete KW - Relative strength KW - Replacement ratio KW - Statistical analysis KW - Strength tests TI - Prediction model for cementing efficiency of fly ash concrete by statistical analyses IS - 0 VL - 250-253 DO - 10.4028/www.scientific.net/AMR.250-253.1293 T2 - ADVANCED MATERIALS RESEARCH ER -