Processing apparatus for surface treatment of concrete and method of surface treatment of concrete

A processing apparatus used for surface treatment of undried concrete, the processing apparatus comprising:

• a single roller having a cylindrical shape and a side face which comes into contact with the undried concrete;
• a main body portion provided with the single roller at a bottom to be supported on the undried concrete by the single roller, and mounted a driving unit that includes a motor configured to rotationally drive the single roller;
• a front trowel attached to the main body portion to position in front of the single roller;
• a rear trowel attached to the main body portion to position in rear of the single roller;
• and
• a handle portion extended rearward and obliquely upward from the main body portion and provided with a grip component that is gripped by an operator at an upper end, wherein
• the processing apparatus is configured to bring an edge of the front trowel into contact with a surface of the undried concrete by an operation of lifting up the grip component in an upward direction to tilt a front side of the main body portion downward about the single roller as a supporting point, and is configured to bring an edge of the rear trowel into contact with the surface of the undried concrete by an operation of lifting down the grip component in a downward direction to tilt a rear side of the main body portion downward about the single roller as the supporting point,
• the driving unit is configured to change over a rotating direction of the single roller between a forward direction and a rearward direction,
• the grip component is provided with an operation part that enables the operator to perform a changeover operation of the rotating direction of the single roller, and
• the side face of the single roller is configured to be flat and smooth, such as to enable the single roller to smooth and level off the surface of the undried concrete with self-propelling and idling the single roller.