Knowde Enhanced TDS
Identification & Functionality
- Product Type
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
- Ready-to-Use Product Features
- Benefits
Extreme fluidity : Can be pumped into areas that are virtually inaccessible with standard C1107 non-shrink grouts.
Working time : Extended for maximum pumping range.
Strength : Attains high compressive strengths at specified water ratios.
Thixotropic : High flow restored by agitation.
Corrosion Protection : Encapsulates tendons, bolts or bars to protect from corrosion.
Bleed Characteristics : Less than 2% bleed when tested at 30 psi per ASTM C1741 via PTI M55.1-12, Section 4.4.6.2.
Consistent : Strict Quality Control testing and standards.
Applications & Uses
- Markets
- Applications
- Application Area
- Uses
NA Grout is ideal for a wide variety of applications:
- Grouting of tight clearances between precast segments, beams and columns in contact with stressed steel tendons or cables.
- Pumping applications in areas around tensioned cables and tendons to encapsulate and maximize anchorage.
- Application
Coverage/Yield:
50 lbs (22.7 kg) will fill approximately 0.53 ft³ (0.015 m³) when 7.75 quarts mixing water is used.
Mixing:
Use a high-shear colloidal mixer capable of achieving a homogeneous mixture. Pre-wet mixer and empty excess water. Mix at a water ratio of 7.75 quarts of cool, clean, potable water per 50 lb (22.7 kg) bag of NA Grout. Mix at approximately 1,500 RPM for 3 to 5 minutes or until desired flow has been achieved and determined using the Modified Flow Cone Method, and/or mud balance. Mix only enough grout that can be pumped continuously within the working time for mixed grout. Do not blend excess water as this will cause bleeding and segregation. Do not use any other admixtures or additives.
Placing:
Post-Tensioning grouting applications should commence following grout approval in accordance with governing specifications such as Post-Tensioning Institute Guide Specification, AASHTO LRFD Bridge Construction Specifications, USDOT FHWA Post-Tensioning Tendon Installation and Grouting Manual or other applicable governing specifications.
Finishing & Curing:
Per PTI M-55 5.6.5, the filled ducts shall not be subjected to shock or vibration within 24 hours.
Properties
- Physical Properties
Property and Test Method Results Compressive Strength 7 Days 28 Days ASTM C942 per 4.4.2 7,000 psi
(48.26 MPa)10,000 psi
(68.95 MPa)Rate of Set Working Time Set ASTM C953 per 4.4.1 2:30 8:00 Initial Fluidity Test
Flow Cone (ASTM C939)
Mod. Flow Cone (4.4.5)Efflux Time
15-30 seconds
6-20 seconds30 Minutes Fluidity TestFlow Cone (ASTM C939)
Mod. Flow Cone (4.4.5)
Flow Cone (ASTM C939)Efflux Time
15-30 seconds
6-20 secondsWick Induced Bleed
ASTM C940 modified per
4.4.6.1Age
3 HoursPercent Bleed
0%Volume Change 1 Day 28 Days ASTM C1090 per 4.4.4 ≥ 0.0% < 2.0% Chloride Ion Test % CI by Weight of Cementitious Content ASTM C1152 < .08% Permeability Test Age Applied Voltage Charge Passed ASTM C1202 28 Days 30 V <2,500 coulombs
Wet Density Wet Density, lb/ft³ (g/cm³) PTI M55 Sect. 4.4.8 122-128 (1.95 - 2.05) Accelerated Corrosion Test Time NA Grout Section 4.4.7, Appendix B 1,000 hours No corrosion Schupack Pressure Bleed Gelman Pressure
30 psi
Percent Bleed
< 0.20%
EN 445 per 4.4.9 Age
Immediately after Mixing
30 min after mixing with
Percent Bleed
0.00%
0.00%
Regulatory & Compliance
- Standards
NA Grout meets and exceeds the requirements of PTI M55.1-12. When tested to 30 psi per ASTM C1741 in accordance with PTI M55, Section 4.4.6.2 and Table 4.1(b), NA Grout complies with PTI M55.1-12 as a Class C Grout utilizing no fillers or aggregates.
Technical Details & Test Data
- Limitations
Do 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. When grouting at minimum temperatures, ensure surfaces in contact with grout do not fall below 40°F (4°C) until final set has been achieved and grout has reached 800 psi. 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. Do not use as a patching or overlay mortar or in unconfined areas. 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
Storage & Handling
- Storage
Normal cement storage and handling practices should be observed. Store in an interior, cool, dry place. In hot weather, material needs to be conditioned to be between 50°F - 60°F (10°C - 16°C) before using. The best option is storage in temperature controlled refrigeration units. All components that will come in contact with the grout should be cooled. Using grout from elevated storage temperatures will have effects of reduced flow and pumpability due to thickening. Shelf life is nine months in original, unopened container.