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- W2128606007 abstract "Improvement of performance of building objects particularly made of concrete and stone (bridges, ceilings, girders) is more and more often obtained via reinforcing with thin, high-strength bands made of carbon polymers. The reinforcement comprises gluing high-module, or high-strength thin carbon laminate (using suitable resin) to the building element at its supporting side. Additional reinforcement is obtained in result of gluing carbon laminate, having suitable orientation ofbres at the beam side planes, within shearing areas. Bend ing strength tests, measurements of fracturing energy and measurements of static Young's modulus were executed with the use of 500 x 26 x 26 mm concrete beams cut of the concrete B-30 blocks, made of concrete of C25/30 class, as well as with use of sandstone beams. 13.8-fold increase of bending strength, 124-fold increase of the destruction work and slight increase of Young's modulus (1.6-fold) was observed for the concrete B-30 - carbon laminate system. Reinforcement with laminate and additional reinforcement of shearing zones resulted in 17.7-fold bending strength increase (load capacity) and 187-fold increase of destruction work. Reinforcement of shearing zones of concrete beams with laminate has no inuence on the system Young's modulus. Reinforcing 530 x 32 x 32 mm sandstone beams with carbon laminate results in 9.2-fold increase of bending strength and 23.2-fold increase of destruction work. Additional reinforcement of the shearing zones improved the bending strength with over 50 % and increased fracturing energy about 3 times. Analogous tests executed with the use of shorter sandstone beams proved considerably smaller values of the bending strength and destruction work. Freezing-corrosion tests with the use of concrete beams having low strength class and reinforced with laminate proved that bending strength is reduced with 60 % after 30 freezing-corrosion cycles, whereas the sandstone beams reinforced with laminate lose their bending strength with 20 % after 30 cycles." @default.
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- W2128606007 date "2011-01-01" @default.
- W2128606007 modified "2023-10-06" @default.
- W2128606007 title "Augmentation of Flexural Strength of Concrete Beams Glued with Carbon Laminate" @default.
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