Compositions: coating or plastic – Coating or plastic compositions – Metal-depositing composition or substrate-sensitizing...
Patent
1987-12-09
1989-09-26
Dixon, Jr., William R.
Compositions: coating or plastic
Coating or plastic compositions
Metal-depositing composition or substrate-sensitizing...
106 1421, 106 76, 52514, C04B 1204
Patent
active
048697532
ABSTRACT:
For the repair of near-surface layers of buildings reinforced with constructional steel the corroded constructional steel is laid bare, treated with a solution of a modified alkali silicate with a Me.sub.2 O: SiO.sub.2 ratio of 1:2 to 1:3 and covered with a mortar containing 2 to 6% by weight relative to the amount of cement of a finely composed amorphous silicic acid with at least 90% by weight SiO.sub.2 finely composesd, precipitated, active silicates of magnesium, calcium, barium or aluminum with a BET surface of 50 to 200 m.sup.2 /g and a d.sub.50 % value below 20 .mu.m.
REFERENCES:
patent: 1129320 (1915-02-01), Vail et al.
patent: 2879578 (1959-03-01), Ulfstedt
patent: 2944919 (1960-07-01), Morris et al.
patent: 3180746 (1965-04-01), Patton et al.
Article "The Protection and Restoration of Concrete", K. Sellars, Paint & Resin (Oct. 1984), pp. 33-37.
Heinrich Remy, "Lehrbuch de Anorganischen Chemie", vol. 1, 1952, pp. 421, 735-736.
"Kieselsaure als Verstarkerfullstoff" (Silic acid as a reinforcing filler), pp. 38, 39 and 42.
Brunsman David M.
Dixon Jr. William R.
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