A system for estimating the amount of water contained in the cement water kneaded body, a method for estimating the amount of water contained in the cement water kneaded body, and a sensor for estimating the amount of water contained in the cement water kneaded body.

摘要

PROBLEM TO BE SOLVED: To provide a system which can be used for a cement water kneaded body in any state before and after curing and can estimate the amount of water contained in the cement water kneaded body by a simple method. SOLUTION: The system according to the present invention is a system for estimating the amount of water contained in a cement water kneaded body belonging to any one of fresh concrete after casting, hardened concrete, fresh mortar after casting, and hardened mortar. Is. This system consists of an RF tag embedded in a cement water kneaded body, a reader or reader / writer capable of transmitting and receiving radio signals between the RF tags, and the intensity value of the radio signal received by the reader or reader / writer, or radio waves. It is provided with an estimation device that estimates the amount of water contained in the cement water kneaded body based on at least one index value of the upper limit threshold of the separation distance between the reader or reader / writer that can detect the reception of a signal and the cement water kneaded body. [Selection diagram] Fig. 2