Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1996-02-29
1999-10-05
Gulakowski, Randy
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525507, 525523, 525524, 528 93, 528 96, 528111, C08L 6100
Patent
active
059626020
ABSTRACT:
An epoxy sealer/healer formulation for sealing and strengthening cracked concrete comprising an epoxy resin, an amine and a dialkylene triamine-alkylene oxide adduct, where the formulation provides a modulus and/or compressive strength at least that of uncracked concrete and effective for penetrating a concrete crack at a rate of at least 10 mm/min for a crack 0.5 mm wide when applied by gravity feed. The epoxy sealer/healer preferably has a viscosity of less than 100 centipoise and a tack-free time of less than 12 hours. The epoxy sealer/healer is advantageous in being able to bond to moist concrete surfaces. A method of using the epoxy sealer/healer for sealing and restoring the strength of cracked concrete is also set forth.
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Lee et al., Handbook of Epoxy Resins, 1983 Reissue, pp. 7-2 to 7-5, 7-19--7-22 and chpt 13, Jan. 1983.
Blank Norman
Coddington Michael C.
Elmendorf David C.
Hartman Stuart J.
Gulakowski Randy
Sika Corporation USA
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