INITIAL CONCRETE CRACK TEST METHOD

摘要

PROBLEM TO BE SOLVED: To provide an initial concrete crack test method capable of accurately evaluating a tendency of a generation state of an initial concrete crack at a construction site (outdoor).;SOLUTION: An initial concrete crack test method evaluates an initial concrete crack using a crack area per unit area of concrete obtained through the following processes (A) to (C): a concrete placing process (A) to place concrete in a steel binding formwork in a manner that exposes one concrete surface; a formwork retention process (B) to retain the steel binding formwork with one concrete surface exposed under an environment where a temperature, relative humidity, a wind speed and a sunshine duration are adjusted almost equal to the same of a planned concrete work construction site; and a crack area calculation process (C) to measure a length and a width of a crack generated on an exposed concrete surface after retaining the steel binding formwork for a predetermined period and to calculate the crack area per unit area of the concrete using the length and the width of the crack.;COPYRIGHT: (C)2015,JPO&INPIT