The ornamental design for a concretefireplace, as shown and described.
FIG. 1 is a perspective view of a concrete fireplace.
FIG. 2 is a front view of the concrete fireplace of FIG. 1.
FIG. 3 is a back view of the concrete fireplace of FIG. 1.
FIG. 4 is a left side view of the concrete fireplace of FIG. 1.
FIG. 5 is a right side view of the concrete fireplace of FIG. 1.
FIG. 6 is a top view of the concrete fireplace of FIG. 1; and,
FIG. 7 is a bottom view of the concrete fireplace of FIG. 1.
The broken lines, when present, are for the purpose of illustrating possible concrete block arrangements of the concrete colonial fireplace and form no part of the claimed design.