Hind ERS 21 (LV) is ready to use for pressure injection into concrete for structural repairs. Due to low viscosity, non-shrink, free flowing injectable and pourable system which find various usage in sealing of crack, expansion joint, floor joint, pavement joint, etc.
Hind ERS 21 (LV) is very useful in concrete such as
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 (LV) 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 streak using a drill and paddle mixed (speed 200 RPM) so as to avoid any entrapped air.
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.
|Mixed ratio||Comp A: Comp B = 2:1 (by wt)|
|Density||1070 to 1090 kg/ m3|
|Pot life||Approximately 45 minutes at 30 °C|
|Compressive strength at 30 °C||30 N/ mm² (min) in 24 hrs.
60 N/ mm² (min) in 7 days.
|Tensile strength at 30 °C||35 N/ mm²in 7 days.|
|Flexural strength 30 °C||30– 40 N/ mm² in 7 days.|
|Gel time||60 min at 30°C|
|Shrinkage||Practically no shrinkage.|
|Chemical resistance||Chemically resistant to wide range of chemicals and oils.|
|Water absorption||< 1 %|
3, 6 & 12 Kg Kit or as required.
12 months if it is in unopened condition. Should be stored in a cool dry place away from direct sunlight.
Hind ERS 21 (LV) 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.