Overlays - Sikadur®-21 Lo-Mod LV
Low-modulus, low-viscosity, epoxy resin binder
Sikadur®-21 Lo-Mod LV, is a 2-component, 100 % solids, moisture-tolerant, epoxy resin binder. It conforms to the current ASTM C-881 Type II, Grade 1, Class B & C and AASHTO M-235 specifications.
- Tolerant to moisture both before and after cure
- Convenient easy mix ratio A:B = 1:1 by volume
- Excellent strength development
- Low viscosity gives you easy handling, high-yield epoxy mortar
- Material is USDA-certifiable for incidental food contact
Usage
Use as a binder for epoxy mortar for patching and overlays.
Advantages
- Tolerant to moisture both before and after cure
- Convenient easy mix ratio A:B = 1:1 by volume
- Excellent strength development
- Low viscosity gives you easy handling, high-yield epoxy mortar
- Material is USDA-certifiable for incidental food contact
Packaging
4 gal. (15 L) units
Note: Part A of the Sikadur® 22 Lo-Mod, Sikadur® 22 Lo-Mod FS and Sikadur®-21 Lo-Mod LV is a universal component of these three products
Color
Clear, amber
Product Details
Product Information
Shelf Life2 years in original, unopened containers
Storage ConditionsStore dry at 40-95 °F (4-35 °C).
Condition material to 65-85 °F (18-29 °C) before using.
ViscosityApproximately 1,000 cps.
Application
Application Information
Mixing RatioComponent A:Component B = 1:1 by volume
Pot LifeApproximately 25 minutes. (200 gram mass)
Cure TimeTack-Free Time: Approximately 3 hours;
at 90 °F (32 °C) Approximately 2 hours
Applied Product Ready for UseTraffic Time: 4-5 hours
Consumption
CoveragePrime Coat - approximately 200-250 ft²/gal.
Mortar Binder - 1 gal. of mixed Sikadur® 21, Lo-Mod LV with the addition of 6 parts by loose volume of an oven-dried sand, yields approximately 924 in3.
Application Steps
SUBSTRATE PREPARATIONSurface must be clean and sound. It may be dry or damp, but free of standing water. Remove dust, laitance, grease, curing compounds, impregnations, waxes and any other contaminants.
Preparation Work:
Concrete - Should be cleaned and prepared to achieve a laitance and contaminant free, open textured surface by blast cleaning or equivalent mechanical means.
Steel - Should be cleaned and prepared thoroughly by blast cleaning to white metal finish.
MIXINGProportion equal parts by volume of Component ‘A’ and ‘B’ into clean pail. Mix thoroughly for 3 min. with Sika paddle on low-speed (400-600 rpm) drill until uniformly blended. Mix only that quantity that can be used within pot life.
To prepare epoxy mortar - Slowly add 6 parts by loose volume of oven-dried sand aggregate to 1 part of mixedSikadur®-21 Lo-Mod LV. Mix until uniform in consistency.
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