RESULTS OF INSPECTION
Inspection results of reinforced concrete wall sections made from high-strength concrete, 1100 mm thick. Wall concrete class for compressive strength B60, SCC—self-compacting concrete mixture. Reinforcement is executed using spatial reinforcement blocks assembled from flat frames. Vertical reinforcement of frames—Ø18A500. Horizontal reinforcement—Ø18A500, spacing 200 mm. According to design documentation requirements, delaminations, voids, and cracks are not permitted in the concrete structures.
Inspection Objectives: determination of hidden defects in the internal concrete structure (including voids, areas of insufficiently compacted and delaminated concrete, foreign inclusions), determination and evaluation of actual reinforcement parameters of walls (spacing of vertical and horizontal reinforcement bars of spatial frames (reinforcement blocks), concrete cover thickness), determination of wall thickness in areas with single-sided access.
Based on tomogram analysis results, the following conclusions were made:
— Images of vertical reinforcement of flat frames were detected (7 rows), bar spacing within frame—100 mm, frame spacing—200 mm. Actual distance to centers of vertical reinforcement bars of the 1st row—100 mm;
— Individual (weakened) images of fragments of vertical reinforcement of the 8th row of flat frames were detected;
— No defects in the internal concrete structure with linear dimensions exceeding 30 mm were detected;
— Actual thickness of wall structures is 1100 mm.
