FIELD: manufacture of building materials. SUBSTANCE: device for thickening the building mixtures has a horizontal cross arm connected with the drive of its vertical displacements and placed over the forming concrete form. The movable horizontal cross arm has a bearing plate on which hole-forming cores are mounted. The oscillation exciters in the form of vertical debalanced shafts are located inside the latter. The shaft ends are connected by means of resilient members with the shafts of the gear drive with the correlation of teeth of engaged wheels from 41:59 to 59:41. The distance between the axes of neighboring hole-forming cores exceeds 1.1-1.8 times the diameter of the described circumference of larger cross-section of each hole-forming core, and the total area of bases of all hole-forming cores is 1.1-1.5 times less than the area of the bearing plate. EFFECT: enhanced efficiency. 2 cl, 1 dwg
