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Fibre-reinforcing is an efficient method to improve the mechanical properties of a wide range of materials including soils. A drawback of currently used fibres, given by methods of production, is their uniform cross-section, planar shape and a smooth surface in most cases having an adverse effect on the pull-out capacity of fibres. The proposed paper presents an initial experience with the fabrication of fibres and testing of cohesionless soils improved in this way. The commercially available 3D printer was used a...

Construction and demolition materials are generated when existing buildings are demolished. The concrete / masonry recycled aggregates can be used within trench reinstatement works. The aim of conducted experiment is to find a methodology for evaluating the effect of backfill compaction works via dynamic penetration tests (DPT). The first part of paper describes construction of testing pit located in research center AdMaS (Czech Republic). The paper continues then with the description of compaction and testing pro...