Knowde Enhanced TDS
Identification & Functionality
- Product Type
- Technologies
- Product Families
Features & Benefits
- Ready-to-Use Product Features
- Benefits
- Resistant : Withstands freeze/thaw damage and de-icer scaling.
- Workability : Slow setting, excellent pumpability.
- Performance : Excellent compressive, bond and flexural strengths.
- Low Permeability : Reduces the potential for corrosion.
- Corrosion Inhibitor : Effectively reduces corrosion rate of steel reinforcement.
- Consistent : Strict Quality Control testing and standards.
Applications & Uses
- Markets
- Applications
- Uses
STR Mortar CI is ideal for a wide variety of formed concrete repairs:
- Vertical form and cast-in-place flatwork
- Tunnels
- Grouted pre-placed aggregate
- Piers, docks and dams
- Form and pump
- Fully contained form applications
- Application
Surface Preparation:
All surfaces in contact with STR Mortar CI shall be free of dirt, oil, grease, laitance and other contaminants that may act as bondbreakers. All unsound concrete should be removed to ensure a good bond. For horizontal repairs, saw cut the perimeter of the area being patched into a square with a minimum depth of ½”. Smooth, dense surfaces need to be mechanically abraded to provide necessary bonding requirements. Mechanically prepare the substrate to a minimum CSP 5 following ICRI Guideline 310.2R to allow proper bonding. ACI recommends the area to be patched should be saturated for 24 hours before placement. Remove any standing water. Surface should be saturated surface dry (SSD). For best results, scrub some of the mixed components into the prepared surface. Do not allow scrub coat to fully dry before placement. Always apply a test patch. Maintain contact areas between 40°F (4°C) and 90°F (32°C) prior to repair and during initial curing period.
Applicaton Thickness:
1” - 3”, up to 8” extended.
Coverage Yield:
50 lbs (22.7 kg) will fill approximately 0.43 ft³ (0.012 m³) when 3.25 quarts mixing water is used.
Mixing:
For best results, use a mechanical mixer with rotating blades or use a heavy duty 1/2” (15 mm) (or larger) low-speed, corded drill and mixing paddle #6 per ICRI Technical Guideline 320.5. Pre-wet mixer and empty excess water. Place 3.25 quarts of cool, clean potable water per 50 lb (22.7 kg) bag in mixer, then add dry material. Mix on low RPM for a total of 3 to 5 minutes until a homogeneous mixture is achieved. Mix only enough material that can be placed within working time. For placements greater than 3” depth, STR Mortar CI must be extended 30% by weight of powder, with clean, washed and dried 3/8” (1 cm) pea gravel. Do not blend excess water as this will cause bleeding and segregation. Do not use any other admixtures or additives.
Placing:
STR Mortar CI should be placed upon completion of mixing. For vertical and overhead applications, continuously pump or pour material into forms. Air relief vents in forms should be placed at the highest point in the repair area to prevent voids from entrapped air. For further forming information, refer to ACI 347R “Guide to Formwork for Concrete”. For horizontal applications, pour material into prepared saw cut area ensuring that all pores and voids are filled. Force material against edge of repair, working away from center. Screed or float to the level of the surrounding concrete, then trowel, brush or broom to the desired finish.
Finishing & Curing:
Follow standard ACI curing practices. Exposed surfaces should be cured with a membrane forming compound such as US SPEC Maxcure Resin Clear, US SPEC Hydrasheen or US SPEC Hydrasheen 30%.
Properties
- Physical Properties
All physical property testing performed in laboratory conditions of 73.5 ± 3.5°F (23 ± 2°C) and a relative humidity no less than 50% unless otherwise determined by the test method or specification. All results represent STR Mortar CI with 3.25 quarts water unless listed otherwise. Tests are conducted under standardized conditions for comparative purposes, and results may not be representative of performance under field conditions.
Property and Test Method Results Compressive Strength 3 Hours 1 Day 7 Days 28 Days ASTM C109 2,500 psi
(17.23 MPa)5,000 psi
(34.47 MPa)6,700 psi
(46.20 MPa)9,000 psi
(65.50 MPa)Rate of Set Working Time Initial Final ASTM C266 :40 1:00 1:45 Flexural Strength 1 Day 28 Days ASTM C348 1,200 psi
(8.27 MPa)1,700 psi
(11.72 MPa)Density
ASTM C138141 lb/ft3 (2,114 kg/m3) Length Change 28 Days Air 28 Days Water ASTM C157 (-)0.04% (+)0.03% Modulus of Elasticity
ASTM C4695.03 x 106 @ 28 days (34.6 GPa) Freeze/Thaw Resistance F/T Cycles Durability ASTM C666 300 100% Scaling Resistance Age Scaled Material ASTM C672 25 Cycles .01 kg/m2 Bond Strength 1 Day 7 Days 28 Days ASTM C882 2,100 psi
(14.48 MPa)2,800 psi
(19.31 MPa)3,900 psi
(26.89 MPa)Chloride Ion Resistance Age Penetrability Electrical Resistivity
(ohm.cm)ASTM C1202 28 Days <1000 coulombs 22,000 Flow Time Flow ASTM C1437 5 Minutes 138% Restrained Shrinkage Net Time-to-Cracking ASTM C1581 > 28 Days Coefficient of Thermal Expansion CRD C39 3.1 x 10-6 in/in°F (5.58 x 10-6 cm/cm°C)
Regulatory & Compliance
- Standards
STR Mortar CI meets and exceeds the requirements of ASTM C928 R2.
Technical Details & Test Data
- Limitations
IDo not apply when the surface or ambient temperature is below 40°F (4°C) or expected to fall below 40°F (4°C) within 48 hours. Do not apply over surfaces that are frozen or contain frost. Do not apply over any active faults or cracks in the substrate without addressing any movement that may occur. Allow concrete to fully cure for 28 days before use of this product. Setting time will speed up in hot weather and slow in cold weather.
Safety & Health
- Danger
This product contains Crystalline Silica (CAS# 14808-60-7) and Portland Cement (CAS# 65997-15-1). Harmful if swallowed. Causes skin irritation. Causes serious eye damage. May cause an allergic skin reaction. May cause cancer. May cause respiratory irritation. Causes damage to organs through prolonged or repeated exposure. Do not eat, drink or smoke when using this product. Wash hands thoroughly after handling. Contaminated work clothing must not be allowed out of the workplace. Do not handle until all safety precautions have been read and understood. Wear protective gloves/protective clothing/eye protection/face protection. Use only outdoors or in a well-ventilated area. Do not breathe dust. Keep away from children. Store locked up. Store in a well-ventilated place. Keep container tightly closed. Dispose of contents/container in accordance with local/regional/national/international regulations.
- First Aid
- If swallowed : Immediately call a poison center/doctor. Rinse mouth.
- If in eyes : Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a poison center/doctor.
- If on skin : Wash with plenty of water. Take off contaminated clothing and wash it before reuse.
- If skin irritation or rash occurs : Get medical advice/attention.
- If inhaled : Remove person to fresh air and keep comfortable for breathing. Call a poison center/doctor if you feel unwell.
Packaging & Availability
- Packaging Type
- Packaging
50 lb (22.7 kg) bag, 63 bags per pallet.
Storage & Handling
- Storage
Normal cement storage and handling practices should be observed. Store material in an interior, cool, dry place. Shelf life is one year in original, unopened container.