Method of reinforcing concrete slab

Details Method of reinforcing concrete slab Method of reinforcing concrete slab

E - Fixed Constructions

04

G

E04G 21/12 (2006.01) E01C 7/14 (2006.01) E01D 22/00 (2006.01) E04C 5/07 (2006.01) E04G 23/02 (2006.01) B32B 31/00 (1995.01)

Patent

CA 2161361

After sanding the upper surface 6 of a concrete slab 2, thermosetting resin 13 is poured onto the upper surface, and a unidirectional reinforcing fiber sheet is laid on the resin 13. The reinforcing fiber sheet is supported on the upper surface of the slab at the ends of the sheet by dry bits etc. and maintained in a stretched state, to thereby impregnate the resin into the sheet and adhere the sheet to the upper surface of the slab. After that, the resin-impregnated fiber sheet is cured to reinforce the slab. The resin used has a viscosity of 5,000 cps or less at 20°C, a thixotropic index TI of 3 or less at 20 °C, and a glass transition point Tg of 60 °C or above after hardening.

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