Method for managing concrete casting and wireless communication device

A method for managing concrete casting, comprising:

• a first step of forming an opening in at least one of a pair of sheathing boards constituting a formwork, and fitting a flange of a wireless communication device into the opening to make an insertion portion in a tapered conical shape protrude from the flange of the wireless communication device to an inside of the formwork, and to make a head portion having a less diameter than a diameter of the flange expose from the flange of the wireless communication device to an outside of the formwork;
• a second step of placing concrete within the formwork;
• a third step of judging whether or not a formwork separation condition is fulfilled while measuring temperature of the concrete within the formwork by means of a temperature sensor stored within the insertion portion to maintain the formwork as long as the formwork separation condition is not fulfilled;
• a fourth step of removing the formwork in a state where the formwork separation condition is fulfilled and the concrete within the formwork has been hardened and contracted, and keeping the insertion portion held by the hardened and contracted concrete;
• a fifth step of judging whether or not strength of the concrete has reached to be predetermined strength while measuring the temperature of the concrete by means of the temperature sensor, and keeping the insertion portion held by the hardened and contracted concrete as long as the strength has reached to be the predetermined strength;
• and
• a sixth step of removing the wireless communication device from the hardened and contracted concrete whereby the head portion is rotated and the insertion portion is separated from the hardened and contracted concrete after the strength of the concrete has reached to be the predetermined strength.