Method for predicting compressive strength of high-strength concrete and method for designing mixture

摘要

PROBLEM TO BE SOLVED: To provide a compression high strength prediction method and s blend design method thereof capable of precisely predicting compression strength in steam curing.SOLUTION: A prediction method of the compression strength of high strength concrete for performing steam curing is configured to predict the compression strength (ft) by establishing coefficients a and b in a range of 45≤a≤65 and 0.25≤b≤0.85 in the case that an effective material age is equal to or less than 5 days and the coefficients a and b in the range of 65≤a≤150 and 0.01≤b≤0.15 in the case that the effective material age is equal to or more than 5 days in the following formula showing the compression strength (ft) in the effective material age t (day) that converts steam curing into standard curing of 20°C: ft=a×t+c...[1] (in the formula, a is a manifested strength function, tis a material age function based on the effective age, b is a function of the material age coefficient, and c is a correction function determined by a type of a bone material).SELECTED DRAWING: Figure 4