Defect detecting/degree-of-filling-in measuring apparatus for concrete during placement and method for defect detection/degree of filling-in measurement for the same

A defect detecting/degree-of-filling-in measuring apparatus for concrete during placement that measures the electrostatic capacitance for the concrete during placement from the outside of a concrete form for detecting a defect of and measuring the degree of filling-in for the concrete during placement, having:

• a detection section having a positive electrode which surface to be butted against the concrete form is a curved surface and which is disposed in the middle portion of one end face of a cylindrical insulator, and a negative electrode which is disposed at the other end face of the cylindrical insulator, being opposed to said positive electrode;
• a measuring circuit which determines the electrostatic capacitance across said positive electrode and negative electrode from a detection signal of the detection section;
• an arithmetic circuit which, on the basis of a measuring signal of the measuring circuit, determines whether the degree of filling-in for said concrete during placement is adequate;
• and
• a display section which displays the result of operation of the arithmetic circuit.

A defect detecting/degree-of-filling-in measuring apparatus for concrete during placement that measures the electrostatic capacitance for the concrete during placement from the outside of a concrete form for detecting a defect of and measuring the degree of filling-in for the concrete during placement, comprising:

• a detection section for deeper-part measurement having a positive electrode which surface to be butted against the concrete form is a curved surface and which is disposed in the middle portion of one end face of a cylindrical insulator, and a negative electrode which is disposed at the other end face of the cylindrical insulator, being opposed to said positive electrode;
• and
• a detection section for closer-part measurement having a positive electrode which surface to be butted against the concrete form is a curved surface and which is disposed in the middle portion of one end face of a cylindrical insulator, and a negative electrode which is disposed at the other end face of the cylindrical insulator, being opposed to said positive electrode, the spacing between said positive electrode and negative electrode being smaller than that for the detection section for deeper-part measurement;
• at both ends of a gripper.

A defect detecting/degree-of-filling-in measuring apparatus for concrete during placement that measures the electrostatic capacitance for the concrete during placement from the outside of a concrete form for detecting a defect of and measuring the degree of filling-in for the concrete during placement, comprising:

• a detection section for deeper-part measurement having a positive electrode which surface to be butted against the concrete form is a curved surface and which is disposed in the middle portion of one end face of a cylindrical insulator, and a negative electrode which is disposed at the other end face of the cylindrical insulator, being opposed to said positive electrode;
• and
• a detection section for closer-part measurement having a positive electrode which surface to be butted against the concrete form is a curved surface and which is disposed in the middle portion of one end face of a cylindrical insulator, and a negative electrode which is disposed at the other end face of the cylindrical insulator, being opposed to said positive electrode, the spacing between said positive electrode and negative electrode being smaller than that for the detection section for deeper-part measurement;
• at both ends of a gripper,
• and having:
• a deeper-part measuring circuit which determines the electrostatic capacitance across said positive electrode and negative electrode from a detection signal of said detection section for deeper-part measurement;
• a closer-part measuring circuit which determines the electrostatic capacitance across said positive electrode and negative electrode from a detection signal of said detection section for closer-part measurement;
• an arithmetic circuit which processes the respective measured signals of said deeper-part measuring circuit and closer-part measuring circuit through the switching action to determine whether the degree of filling-in for said concrete during placement is adequate;
• and
• a display section which displays the result of operation of the arithmetic circuit.

A defect detecting/degree-of-filling-in measuring apparatus for concrete during placement that measures the electrostatic capacitance for the concrete during placement from the outside of a concrete form for detecting a defect of and measuring the degree of filling-in for the concrete during placement, comprising:

• a detection section for deeper-part measurement having a positive electrode which surface to be butted against the concrete form is a curved surface and which is disposed in the middle portion of one end face of a cylindrical insulator, and a negative electrode which is disposed at the other end face of the cylindrical insulator, being opposed to said positive electrode;
• and
• a detection section for closer-part measurement having a positive electrode which surface to be butted against the concrete form is a curved surface and which is disposed in the middle portion of one end face of a cylindrical insulator, and a negative electrode which is disposed at the other end face of the cylindrical insulator, being opposed to said positive electrode, the spacing between said positive electrode and negative electrode being smaller than that for the detection section for deeper-part measurement;
• at both ends of a gripper which middle portion is bent at 90 degrees,
• and having:
• a deeper-part measuring circuit which determines the electrostatic capacitance across said positive electrode and negative electrode from a detection signal of said detection section for deeper-part measurement;
• a closer-part measuring circuit which determines the electrostatic capacitance across said positive electrode and negative electrode from a detection signal of said detection section for closer-part measurement;
• an arithmetic circuit which processes the respective measured signals of said deeper-part measuring circuit and closer-part measuring circuit through the switching action to determine whether the degree of filling-in for said concrete during placement is adequate;
• and
• a display section which displays the result of operation of the arithmetic circuit.

A defect detecting/degree-of-filling-in measuring apparatus for concrete during placement that measures the electrostatic capacitance for the concrete during placement from the outside of a concrete form for detecting a defect of and measuring the degree of filling-in for the concrete during placement, comprising:

• a detection section for deeper-part measurement having a positive electrode which surface to be butted against the concrete form is a curved surface and which is disposed in the middle portion of one end face of a cylindrical insulator, and a negative electrode which is disposed at the other end face of the cylindrical insulator, being opposed to said positive electrode;
• and
• a detection section for closer-part measurement having a positive electrode which surface to be butted against the concrete form is a curved surface and which is disposed in the middle portion of one end face of a cylindrical insulator, and a negative electrode which is disposed at the other end face of the cylindrical insulator, being opposed to said positive electrode, the spacing between said positive electrode and negative electrode being smaller than that for the detection section for deeper-part measurement;
• as parts bifurcated from a gripper.

A defect detecting/degree-of-filling-in measuring apparatus for concrete during placement that measures the electrostatic capacitance for the concrete during placement from the outside of a concrete form for detecting a defect of and measuring the degree of filling-in for the concrete during placement, comprising:

• a detection section for deeper-part measurement having a positive electrode which surface to be butted against the concrete form is a curved surface and which is disposed in the middle portion of one end face of a cylindrical insulator, and a negative electrode which is disposed at the other end face of the cylindrical insulator, being opposed to said positive electrode;
• and
• a detection section for closer-part measurement having a positive electrode which surface to be butted against the concrete form is a curved surface and which is disposed in the middle portion of one end face of a cylindrical insulator, and a negative electrode which is disposed at the other end face of the cylindrical insulator, being opposed to said positive electrode, the spacing between said positive electrode and negative electrode being smaller than that for the detection section for deeper-part measurement;
• as parts bifurcated from a gripper,
• and having:
• a deeper-part measuring circuit which determines the electrostatic capacitance across said positive electrode and negative electrode from a detection signal of said detection section for deeper-part measurement;
• a closer-part measuring circuit which determines the electrostatic capacitance across said positive electrode and negative electrode from a detection signal of said detection section for closer-part measurement;
• an arithmetic circuit which processes the respective measured signals of said deeper-part measuring circuit and closer-part measuring circuit through the switching action to determine whether the degree of filling-in for said concrete during placement is adequate;
• and
• a display section which displays the result of operation of the arithmetic circuit.

A defect detecting/degree-of-filling-in measuring apparatus for concrete during placement that measures the electrostatic capacitance for the concrete during placement from the outside of a concrete form for detecting a defect of and measuring the degree of filling-in for the concrete during placement, having:

• a detection section having a positive electrode which surface to be butted against the concrete form is a curved surface and which is disposed in the middle portion of one end face of a cylindrical insulator;
• a negative electrode for deeper-part measurement which is disposed at the other end face of the cylindrical insulator, being opposed to said positive electrode;
• and a negative electrode for closer-part measurement which is disposed in said insulator with a distance from the positive electrode that is smaller than that for said negative electrode;
• a deeper-part measuring circuit which determines the electrostatic capacitance across said positive electrode and negative electrode for deeper-part measurement from a detection signal thereacross;
• a closer-part measuring circuit which determines the electrostatic capacitance across said positive electrode and negative electrode for closer-part measurement from a detection signal thereacross;
• an arithmetic circuit which processes the respective measured signals of said deeper-part measuring circuit and closer-part measuring circuit through the switching action to determine whether the degree of filling-in for said concrete during placement is adequate;
• and
• a display section which displays the result of operation of the arithmetic circuit.

A defect detecting/degree-of-filling-in measuring apparatus for concrete during placement that measures the electrostatic capacitance for the concrete during placement from the outside of a concrete form for detecting a defect of and measuring the degree of filling-in for the concrete during placement, comprising:

• a gripper comprising a detection section for closer-part measurement having a positive electrode which surface to be butted against the concrete form is a curved surface and which is disposed in the middle portion of one end face of a cylindrical insulator, and a negative electrode which is disposed at the other end face of the cylindrical insulator, being opposed to said positive electrode;
• a detection section for deeper-part measurement which is removably disposed with respect to said detection section for closer-part measurement, having a positive electrode which surface to be butted against the concrete form is a curved surface and which is disposed, being opposed to said negative electrode in the mounted state;
• and having:
• a deeper-part measuring circuit which determines the electrostatic capacitance across said positive electrode and negative electrode for deeper-part measurement from a detection signal thereacross in the state in which said detection section for deeper-part measurement is mounted;
• a closer-part measuring circuit which determines the electrostatic capacitance across said positive electrode and negative electrode for closer-part measurement from a detection signal thereacross in the state in which said detection section for deeper-part measurement is removed;
• an arithmetic circuit which processes the respective measured signals of said deeper-part measuring circuit and closer-part measuring circuit through the switching action to determine whether the degree of filling-in for said concrete during placement is adequate;
• and
• a display section which displays the result of operation of the arithmetic circuit.

A defect detecting/degree-of-filling-in measuring apparatus for concrete during placement that measures the electrostatic capacitance for the concrete during placement from the outside of a concrete form for detecting a defect of and measuring the degree of filling-in for the concrete during placement, having:

• a detection section having a positive electrode which surface to be butted against the concrete form is a curved surface;
• a cylindrical insulator which is disposed such that the spacing between it and the positive electrode is adjustable;
• and a negative electrode which is opposed to said positive electrode;
• a deeper-part measuring circuit which determines the electrostatic capacitance across said positive electrode and negative electrode corresponding to the deeper-part measurement for the concrete during placement from a detection signal of said detection section when the spacing between said positive electrode and negative electrode is large, and which determines the electrostatic capacitance across said positive electrode and negative electrode corresponding to the closer-part measurement for the concrete during placement from a detection signal of said detection section when the spacing between said positive electrode and negative electrode is small;
• an arithmetic circuit which, on the basis of the measurement signals of the measuring circuit, determines whether the respective degrees of filling-in for the deeper part and the closer part of said concrete during placement are adequate;
• and
• a display section which displays the result of operation of the arithmetic circuit.