ABSTRACT
After hardening, the beam specimens were demoulded and cut along the direction of flow (long direction) into five equal cubes of 150 mm length, using a diamond tipped concrete saw; these sections were labelled as 1, 2, 3, 4, and 5 (where section 1 is the end where concrete is poured and section 5 is the other end). Sections 1 and 5 were discarded to avoid end effects, while Sections 2, 3, and 4 were selected for the AC-IS and ultrasonic pulse velocity studies. The cubes were tested in all the three directions. The specimen details are shown in Figure 1.
