Summary


Anticorrosive concrete surface strengthening coating for corrosive environments.

Methods

Click on a method's number to get a more detailed description.

3

 

 

G&W-G Mortar


Product Description

G&W-G is an alkali water-based acrylic polymer micro-cement mortar. G&W-G is used as a concrete surface coating and repairing and protection material for problem areas caused by pollution resulting in corrosion, carbonation, freezing and thawing conditions, etc.


Application

    1. Crack Repair
    2. Bonding with new and Existing Concrete
    3. Tunnel Lining
    4. Deck Coating
    5. Road/Pedestrian Markings
    6. Parking Garage Structures

Application Equipment

    1. Mixing equipment: Hand mixer, sieve.
    2. Gauge: Scales.
    3. Application equipment: recommended spray, brush.
Features
    1. Has elasticity, responsive to structural movement
    2. Carbonic gas and water percolation resistance properties, serves as a waterproof layer
    3. Adhesive to existing concrete, becomes part of the structure
    4. Durable/Weatherability, long lasting benefits
    5. Alkali resistance

Test Results

Test Methods: ASTM C 1439, ASTM E 154, ASTM C 157, ASTM D 968, ASTM D 3730

Test Item
Test Result
Bond Strength
( N / cm2 )
3 days
7 days
14 days
197
213
254
Absorption Ratio (%)
1 hour
5 hour
24 hours
0.15
0.2
0.2
Permeability Ratio (%)
0.25
Drying Shrinkage Ratio (%)
0.05
Coefficient of Thermal Permeability
( /¡É)
16.6 x 10-6
Abrasion Resistance Ratio (%)
0.4
Impact Resistance
No Effect


Mixing Ratio

G&W-G Mortar
Type A
Type B
1 kg
0.5 kg


Directions

    1. Measure 1 lb of Type A and .38 – .45 lb of Type B in each container.
    2. Amount of Type B may vary depending on temperature and humidity.
    3. Uneven surface shall be treated to make it smooth before application.
    4. Ensure application at a constant pressure and thickness to ensure no stain or gloss on surface.
    5. Do not apply too thick.
    6. Dampen concrete surface with water or Type B before application to ensure that concrete does not wick away moisture from mortar mixture.
    7. Minimize to use Type B so as to prevent the surface from being excessively dried to ensure the standard quality.
    8. Remove any foreign material, G&W-G is designed to protect the surface.
    9. Use a sieve to remove lumps before application.

Caution

    1. A sufficient curing is required under the temperature below 50°F.
    2. In case of any condensation on surface, dry the surface using heater, fan, air compressor or portable burner.
    3. In case of hot-weather concreting on dried surface, spray refined water or liquid to prevent the mortar from drying too rapidly.
    4. Limit the amount of mixed material at normal temperature so that it can be applied within 30 minutes.
    5. Do not use if powder hardens or liquid freezes.
    6. Application should not be done below 31°F and over 95°F.
    7. As the viscosity varies depending on temperature and humidity, keep agitating to prevent the aggregate from being segregated in a low viscosity, and add Type B within a mixing ratio allowable before agitating the material in high viscosity.
    8. Protect surface from rain before it is hardened.
    9. Protect surface from external impact, rain or direct sunlight for at least 48 hours after application

Storage

    1. Refer to instruction on storage of powder or liquid-type material for further details. If any problems persists, contact the manufacturer.
    2. Application can not be done in strong winds.

Other

    1. Those not instructed in specifications may follow standard concrete specifications.
    2. In the event of any discrepancies between the specification and work environment, consult the manufacturer or designer before application.
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