Introduction:

J-ring test the passing ability of the concrete.The equipment consists of rectangular section of 38 mm X 25 mm open steel ring drilled vertically with holes to accept a threaded section of reinforcing bars 12 mm diameter 100 mm in length.The bars and sections can be placed at a different distance apart to simulate the congestion of reinforcement of the ring formed by vertical section are 300 mm and height 100 mm.

Equipments :

• Slump cone without foot pieces
• Base plate at least 900 mm
• Trowel
• Scoop
• Scale 1 Meter
• J ring rectangular section 38 mm *25 mm plated vertically to form a ring 300 mm diameter generally at a spacing of 48±2 mm.