U shape box apparatus is used to determine the ling ability of self-compacting concrete. The apparatus consists of a mild steel vessel that is fully divided by a middle wall into two section; an opening with a sliding gate is fitted between the two sections.

VTECH IndiaReinforcing bar with nominal diameter of 134 mm are installed at the gate with centre to centre spacing of 50 mm and bars clear spacing of 35 mm. Our u shape box test apparatus left hand section is filled with about 20 liter of concrete then the gate is lifted and the concrete flows upwards into the other section.