METHOD TO CONTROL CONSTRUCTION STRUCTURE QUALITY Russian patent published in 2010 - IPC G01N33/38 

FIELD: test equipment.

SUBSTANCE: invention relates to methods of controlling the quality of construction structures, in particular that of vertical sealing curtains formed by jet cementing. Proposed method consists in using an effect of ultrasound wave reflection to detect structure defects between probes, i.e. radiator and reflector fitted in water-filled access channels made in wells drilled vertically down to designed level, and receiving data in the form of ultrasound profile, that is, processed ultrasound pulses with due allowance for probing depth. Quality control is effected in ready sealing curtain. Access channels in the form of tubes are arranged at the center of intercrossing soil-cement piles that form said sealing curtain in soil by drilling wells and jet cementing of soil. Data on defect zones in said curtain are derived from ultrasound pulses readings between centers of soil-cement piles with due allowance for probing depth, primarily, along straight line as follows: body of one pile - intersection of piles - body of another pile, and or with additional diagonal crossing of pulses in the same manner in two- and more-line sealing curtain.

EFFECT: ease of quality control, higher efficiency of sealing curtain quality control, reduced terms and costs.

2 ex, 1 tbl, 10 dwg