METHOD FOR ESTIMATING COMPRESSIVE STRENGTH AND/OR STATIC ELASTIC MODULUS OF CONCRETE

摘要

PROBLEM TO BE SOLVED: To provide a method for estimating compressive strength and/or static elastic modulus of concrete formed of different kinds of crushed sand.;SOLUTION: A method for estimating compressive strength and/or static elastic modulus of concrete includes: obtaining a unit water content of fresh concrete that satisfies all the following conditions among concrete as targets of estimating compressive strength and/or static elastic modulus, the conditions being (i) a water-cement ratio or water-binder ratio is the same, (ii) the same concrete raw material is used except crushed sand, and (iii) the temperature of fresh concrete coincides within a range of 10 to 35°C; obtaining a corrected unit water content on the basis of the unit water content; thereafter, substituting the corrected unit water content in a separately-defined linear regression equation of compression strength and/or static elastic modulus and the corrected unit water content; and calculating an estimation value of compression strength and/or static elastic modulus.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2017,JPO&INPIT