Apparatus for monitoring quality of injection or jet stream process of cement in building

摘要

The apparatus has measurement levels (4,5,6) driven at the corners of at least one polygon in the structure. A transmitter and receiver are provided in the measurement levels. At least one bore (8) is driven in the polygon(s). Injection rods with at least one outlet nozzle are moved into the bore. A beam mixed with injection material is generated for each nozzle and is directed into the structure. The outlet nozzles are set to rotate. Radar beams or ultrasonic beams are emitted by the transmitters into the structure. The beams or waves transmitted by the structure are picked up by the receiver and the measured values are analysed.