U box test Apparatus With Diameter 134mm is used to measure thefiling ability of self compacting concrete. The apparatus consists of a vesselthat is divided by a middle wall into two compartments; an opening with a slidinggate is fitted between the two sections. Reinforcing bar with nominal diameterof 134 mm are installed at the gate with centre to centre spacing of 50 mm.this create a clear spacing of 35 mm between bars. The left hand section isfilled with about 20 liter of concrete then the gate is lifted and the concreteflows upwards into the other section. 

• High durability