Method for bonding fiber reinforcement on concrete and steel structures and resultant products
OwnerJoseph Davidovitsinventor
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Abstract
Fiber-reinforced geopolymeric resin having a mole ratio of SiO.sub.2 :Al.sub.2 O.sub.3 of at least equal to 6, and preferably at least equal to 10, adheres well to both concrete and steel, and is used to protectively cover infrastructures formed of steel-reinforced concrete and the like.
Claims16
In a method for bonding a resin impregnated fiber reinforcement onto a substrate structure formed of at least one of concrete and steel, comprising applying said fiber reinforced resin to said substrate structure and curing said resin, the improvement wherein said resin is a geopolymeric bonding resin with a mole ratio SiO.sub.2 :Al.sub.2 O.sub.3 of at least 6 and a mole ratio M.sub.2 O:Al.sub.2 O.sub.3 of at least 1.3, wherein M is at least one of Na and K.
In a method for externally bonding a resin impregnated fiber reinforcement onto a substrate structure of concrete and steel, comprising applying said fiber reinforced resin to said substrate structure and curing said resin, the improvement wherein
- said resin is a geopolymeric bonding resin with a mole ratio SiO.sub.2 :Al.sub.2 O.sub.3 of at least 6 and a mole ratio M.sub.2 O:Al.sub.2 O.sub.3 of at least 1.3, wherein M is at least one of Na and K, and contains a hydrated siliceous phase which has a nuclear magnetic resonance spectrum .sup.29 Si MASNMR with two major peaks at 98.+-.ppm and -110.+-.5 ppm.
A structure comprising a substrate formed of at least one of concrete, iron and steel, at least partly covered and protected by fiber reinforced geopolymeric bonding resin adhered thereto, said geopolymeric bonding resin having a mole ratio SiO.sub.2 :Al.sub.2 O.sub.3 of at least 6 and a mole ratio M.sub.2 O:Al.sub.2 O.sub.3 of at least 1.3, wherein M is at least one of Na and K.
Dependencies are inferred from the claim text.