L Box Apparatus
Model No.: SET-1108
L Box test for self-compacting concrete that is based on the Japanese design for underwater concrete. it has been described by Peterson. The test used to determine the flow of the concrete and the extent to which it is subjected to blocking by reinforcement.
The apparatus consists of rectangular section box in shape of L including a vertical and horizontal section, divided by a movable gate, at the bottom of horizontal length of reinforcement bar are fitted. The vertical section will be fill with self-compacting concrete, and then the gate lifted to let the concrete flow into the horizontal section.
This is a brass tube approximately 53cm long and 2.8cm I.D. with a wooden handle. Total length approximately 73cm. The tube has the sharp angular edge which conveniently pierces cement bags. An air hole of approximately 3mm dia. is drilled on the tube near handle. Total sample collected at one time is 300 cm approximately.