Hind ERS 21


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Description

 

USES

Hind ERS 21 is ready to use for pressure injection into concrete for structural repairs. The system possess the properties like low viscosity, non-shrink, free flowing and pourable, hence it find various usages in sealing of crack through injection operation, in expansion joint, floor joint, pavement joint, etc.

ADVANTAGES

Hind ERS 21 is very useful in concrete such as

  • It can be injected into extremely fine cracks and small cavities.
  • It has high compressive strength, tensile and flexural strength.
  • Excellent bonding and adhesion.
  • No shrinkage during curing.
  • Like all epoxy resin system it has high chemical resistance.
  • Cured material is not brittle and remains slightly flexible.
  • Reduce thermal expansion co efficient thus improves thermal conductivity.

APPLICATION 

Surface Preparation: Before application surface preparation is important, surface should be cleaned, dry, free from loose particles, oil, grease or other foreign materials, 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 Hind ERS 21 mortar and surface sealing is to be done for other porous areas.

Mixing:

Mix 1 part by wt of component B with 2 parts by wt of component A i.e. Mixing Ratio = Component A: Component B = 2:1 (by wt). Mix at least 5 minutes to uniform color without any steak using a drill and paddle mixed (speed 200 RPM) so as to avoid any entrapped air. Comp B is to be poured in Comp A and stirred gently.

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.

Cleaning: 

Clean all tools & equipment immediately after use with, Xylene, Toluene or suitable solvent.

PROPERTIES

Aspect Light amber
Mixed ratio Comp A: Comp B = 2:1 (by wt)
Density 1070 to 1090 kg/ m3
Pot life 60 minutes at 27 °C
Compressive strength at 27 °C 35N/ mm2 (min) in 24 hrs.

80 N/ mm2 (min) in 7 days.

Tensile strength at 27 °C 15 – 20 N/ mm² in 7 days.
Flexural strength 27 °C 30 – 40 N/ mm² in 7 days.
Shrinkage Practically no shrinkage.
Chemical resistance Chemically resists by wide range of chemicals and oils.

PACKING

3, 6, 12 Kg Kit or as required.

SHELF LIFE

12 months if it is in unopened condition. Should be stored in a cool dry place away from direct sunlight.

HANDLING PRECAUTION

Hind ERS 21 is non-toxic but ingestion is to be avoided. Any splashes to the skin must be washed with water. If contact with eyes occurs, wash well immediately with water and seek medical advice.

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