Post-tensioned concrete slab with fibres
(10) US2023151611A1
(22) 24.03.2021
(43)18.05.2023
(57) A concrete slab (20) comprises conventional concrete and a combined reinforcement of both post-tension steel strands (22, 26) and fibres (29). The post-tension steel strands (22, 26): —have a diameter ranging from 5 mm to 20 mm, —have a tensile strength higher than 1700 MPa. The fibres (29) are present in a dosage ranging from 10 kg/m3 to 40 kg/m3 in case of steel fibres are in a dosage ranging from 1.5 kg/m3 to 9 kg/m3 in case of macro-synthetic fibres.
(71) NV Bekaert SA (BE); CCL Stressing International Ltd (GB)
