Summary
Functional
shotcrete repair mortar.
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Methods
Click on a method's number to get a more detailed description. 4
- 13 - 22
- 30
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RE-Monotar
Product Description
RE-Monotar and RE-Monotar S is a premix mortar compounded of cement,
special additives, functional admixtures, powder polymer and grade
adjusting aggregates. It is also a functional polymer mortar by mixing
water on the job site.
Application
- Damaged concrete structures
- Section repair for reinforced concrete structures
- Mixing equipment: Electrical power mixer. Small silo & continuous
mixer (1m3).
- Gauge: Scales.
- Application equipment: Recommended spraying tool, air compressor,
hose, nozzle, trowel.
- Specification of sprayer:
Max capacity: 1-8 Gallon/min (adjustable).
Compressor: 7.5HP or greater.
RPM: 20-260rpm.
Pump: Mono pump.
Hose: 35mm / 30 bar.
Nozzle: T=15mm urethane nozzle pipe.
- Excellent water-tightness & durability
- Good adhesive performance with existing concrete
- Cracks inhibitor by drying shrinkage
- General applying plasters & shotcrete workability
Test Results
| Test
Item |
Unit |
Test
Result
Age 28 days
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Test
Method |
| Adhesive
Strength
|
N/mm²
|
1.8
|
KS
F 4042-´02
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Compressive
Strength
|
N/mm²
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48.00
|
KS
F 4042-´02 |
| Flexural
Strength
|
N/mm²
|
11.3 |
KS
F 4042-´02
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Permeability
Qty.
|
g
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4
|
KS
F 4042-´02
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Mixing Ratio
| RE-Monotar
|
| Type
A |
Refined
Water |
1
kg
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160~170
g
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Directions
- Measure 1 lb. of Type A and .16 – .17 lb. of Type B in each container
- At initial mixing, mix .16 lb. of Type B to 1 lb. of Type A, and
add Type B within 10% in consideration of workability in 5 minutes
and mix again for 3 minutes before application.
- Dampen concrete surface with refined water before application
to ensure that concrete does not wick away moisture from mortar
mixture in hotter weather.
- Apply the mortar using a trowel or recommended spraying tool.
- * When applying using a sprayer:
Spray refined water or diluted mortar first to reduce the friction
inside the sprayer, and then spray the mortar.
- When an application is suspended more than 30 minutes, remove
the material inside the hose for cleaning.
- Aim spray gun at the surface at right angle, and spray the mortar,
while moving in round direction, 500mm from the surface.
- Apply prime coating shall be at 5mm or less to fill the void and
to increase the adhesion.
- A sufficient curing is required under the temperature below 50°F.
- In case of any condensation on surface, dry the surface using
a heater, fan, air compressor or portable burner.
- In case of hot-weather concreting on dried surface, spray refined
water or liquid to prevent the mortar from drying too rapidly.
- Limit the amount of mixed material at normal temperature so that
it can be applied within 30 minutes.
- Do not use if powder hardens or freezes.
- Do not apply at temperatures below 31°F or above 95°F.
- 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 a high viscosity.
- Protect the surface from external impact at least for 24 hours
after application, and continue the following work after checking
curing state.
- Refer to instruction on storage of powder or liquid-type material
for further details. If problems persists, contact the manufacturer.
- Those not instructed in specifications may follow standard concrete
specifications.
- In the event of any discrepancies between the specification and
work environment, consult the manufacturer or designer before application.
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