LOW VISCOCITY HIGH STRENGTH INJECTABLE EPOXY GROUT


DESCREPTION

" SUNKEM EPOCRETE-21 " is a two component solvent free ultra low viscosity free flowing, fast curing epoxy resin system designed specially for pressure injection into concrete for carrying structural repairs. Due to its low viscosity it can be injected into extremely fine cracks also. The cured resin possesses high mechanical strength, excellent adhesion, practically no shrinkage and a chemical resistance typical of all epoxy resin system. Fine cracks and small voids can be successfully sealed with "SUNKEM EPOCRETE-21" has very high strength, the cured material is not brittle and remains slightly flexible. 'SUNKEM EPOCRETE - 21" Is supplied pre-measured quantities. Component A-Resin and Component B-Hardener.

MIXING RATIO

Component A : 100 parts by weight Component B : 50 parts by weight

PROPERTIES

Colour : Light amber
Density : 1070 to 1090 kg/m3
Compressive Strength M 350 kg/cm2 in 24 hours at 30C. 800 kg/cm2 in 7 days at 30C.
Tensile Strength : 150-200 kg/cm2 in 7 days at 30OC.
Flexural strength : 300-400 kg/cm2 in 7 days at 30OC.
Pot life : Approximately 40 minutes at 30OC
Shrinkage : Practically no shrinkage.
Chemical Resistance : Unaffected by a wide range of chemicals, oils etc.
Storage : 24 months when unopened and kept in shade.

APPLICATION DATA
SURFACE PREPARATION -
The area to be treated should be properly cleaned to remove dust, laitenance, grease, fungus etc. Injection nipples are fixed in a square grid maximum 500 to 800 mm c/c depending on the cracks and nature of concrete. If required for effective treatment, the grid may be reduced. Before the injection starts all cracks and crevices are to be sealed with "SUNKEM EPOCRETE - 21 " mortar and surface sealing is to be done for other porous areas.
MIXING Mix all the components-B (Hardener) with Component-A (Resin) Mix for 2-3 minutes to uniform colour without any streak using drill and paddle (speed 400 - 450 R.P.M. ) mixer so as to avoid any entrapped air. Mix only sufficient material for immediate requirement. Leave the mixed material stand for 2-3 minutes to enable entrapped air, if any, to escape from the mix and then use as quickly as possible. INJECTION The grout mixture should be pumped by a positive displacement plunger type pump. Inject at slow and even pressure through the injecting nipples till refusal or when the/grout oozes out from nipple immediately adjacent to or above the one being injected.