How to Apply
Surface Preparation (See ICRI guidelines)
- Concrete must be sound and fully cured (28 days).
- Saw cut the perimeter of the area being patched into a square with a minimum depth of 1-in (13 mm).
- Remove all unsound concrete and roughen the surface to min. 1/4-in profile amplitude.
- Remove all laitance, oil, grease, curing compounds, and other contaminants that could prevent adequate bond.
- The concrete substrate should be saturated surface-dry (SSD), without standing water, before application.
- Blend with aggregate and apply the mixed material onto the prepared saturated surface-dry (SSD) substrate by trowel or screed. Ensure proper consolidation of the mortar and compaction around reinforcing steel. Minimum application thickness is 1-in based on a 3/8-in maximum coarse aggregate. Finish the completed repair, as required, taking care not to overwork the surface.
Reinforced Steel
Remove all oxidation and scale from the exposed reinforcing steel in accordance with ICRI Technical Guideline No. 03730 “Guide for Surface Preparation for the Repair of Deteriorated Concrete Resulting from Reinforcing Steel Corrosion.”
Mixing
Approximately 0.42-0.47 water and latex to cementitious materials ratio by weight. Conduct field trials to verify proper slump (approx. 8-in) yield and a thoroughly mixed product.
Set time– min. at 72° F (22° C) (ASTM C 191)
Initial 20-25
Final 35-40
Compressive strength– 3-in by 6-in Cylinders (ASTM C 39)
Time……….Strength in PSI(MPa)
3 Hour……….3,300 (22.75)
1 Day………..4,150 (28.61)
7 Day………..5,900 (40.68)
28 Day……….6,400 (44.13)
Shear Bond Strength-3-in by 6-in Cylinders (ASTM C 882)
Time……….Strength in PSI(MPa)
1 Day……….1900 (13.10)
Chloride Penetration– Time of testing: 360 min (ASTM C 1202)
Time…………Coulombs
7 Day…………99
28 Day……….117
Freeze thaw resistance– 300 cycles (ASTM C 666)
Cycles……….Weight Loss (g)……Relative Dynamic Modulus
300…………….0……………………96%
Flexural Strength– 2-in by 2-in by 11-in Beams (ASTM C78)
Time…………….Strength in PSI (MPa)
2 Hour……………..660 (4.55)
3 Hour……………..790 (5.45)
1 Day………………860 (5.93)
7 Day…………….1,150 (7.93)
28 Day……………1,300 (8.96)
Curing
Cure immediately after finishing. Use a curing compound that complies with ASTM C 309. In extreme heat, keep the patches covered and damp
Clean Up
Clean tools and equipment with clean water immediately after use. Cured material must be removed mechanically
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FasTrac 303 Cement