CHEM-MORTAR 2

APPLICATION

Limitations:  application at ambient temperature below approximately 41F (5°C) is not recommended.  Exposure to temperatures exceeding 149°F (65°C) for prolonged periods is not recommended.

Surface Preparation: concrete or cementitious substrates should be at least 28 days old and moisture content of substrate should be less than 5%.

All laitance and loose materials must be removed from the concrete surfaces. If the concrete is strong, crack-free and sound with light laitance, surface preparation may be achieved by acid etching followed by thorough water washing using high pressure water jetting ensuring all traces of acids are removed prior to application of the repair screed.

Areas or deeply penetrating contaminations by oil, greases and fats should be flame cleaned by hot compressed air or thoroughly washed by good industrial detergent. The cleanly washed substrate is then allowed to dry completely.

Cracked or damaged concrete or heavy laitance should be removed and prepared by grit blasting, scrabbling or mechanical grinding until a solid surface is reached showing exposed aggregate.

Any corroded reinforcement should be exposed at least 10 mm around the reinforcement and shot blasted to Swedish standard SA 2 ½ (bright metal).

Avoid featheredges in the concrete. Repair areas by saw cutting to a minimum depth of 5 mm. Remove all deleterious concrete until achieving a solid base. Blow out all the dust from the area of repair.

Mixing and Application: mechanical mixing of the CHEM-MORTAR 2 and silica sands is the most efficient and effective method. Stir each part separately. Mix equal volumes of Part A Resin and Part B Hardener thoroughly using slow speed hand held drill fitted with a mixing paddle attachment. Carefully scrape the sides and bottom of the mixing container during mixing. Blend for 1 to 2 minutes until achieving a uniform color and consistency. To use CHEM-MORTAR 2 as a mortar for repairs of spalls, honeycombs, etc., add dry graded silica sands and mix well before trowelling. The mix ration is 1 volume of the liquid mixture to 6 volumes of sand or approximately 2.2 Lb (1 kg) of liquid mixture to 22 Lb (10 Kg) graded silica sand. Density of the mixed mortar is approximately 14.19 Lb/Gallon (1.7 Kg/liter). Choice of silica sand size depends on the depth of the required repair. Consult our technical staff for recommendation on choices. Prior to application of CHEM-MORTAR 2 mortar, a primer must be applied to the substrate to insure bonding. Use resin and hardener of CHEM-MORTAR 2 binder system for priming.  Trowel the mortar into a wet or tacky primer.

Curing: allow the system to cure for minimum 24 hours prior to subjecting it to use for light traffic.  Heavy traffic and chemicals should not be allowed until after 7 days.

Cleaning: remove uncured CHEM-MORTAR 2 from tools and equipment with suitable solvents such as Xylene, Toluene or CHEM-CRETE BLENDED SOLVENT immediately after use. Cured material may only be removed mechanically.