| 摘要 |
PROBLEM TO BE SOLVED: To provide a self-contraction measurement method of concrete capable of clearly defining an original point of self-contraction distortion of concrete receiving high-temperature history.SOLUTION: In a self-contraction measurement method of concrete, after a distortion gauge for measuring distortion of a reinforcement bar is fixed, and a reinforcement bar to which an embedded distortion meter for measuring contraction distortion of concrete is loosely attached is embedded in concrete; secular change of distortion of the reinforcement bar and secular change of contraction distortion of concrete are simultaneously measured; a time point at which distortion of the reinforcement bar suddenly changes is regarded as an original point of self-contraction distortion of concrete; and thereby self-contraction distortion of concrete is acquired.SELECTED DRAWING: Figure 4 |
