Knowde Enhanced TDS
Identification & Functionality
- Product Type
- Technologies
- Product Families
Features & Benefits
- Ready-to-Use Product Features
- Advantages
- Light weight for high build in vertical or overhead use
- Integral fibers for added strength
- Includes corrosion inhibitor to protect steel reinforcement
- Non-shrink to provide structural repair of holes or cracks
- Excellent bond to existing concrete or masonry
- Dense for chloride ion repellency and durability
- Latex modification provides enhanced resistance to acids compared to standard concrete patching products
- Rapid setting for minimal turnaround time
- Dries to a light concrete gray to blend better with surrounding concrete
- Contains no silica fume, gypsum, or metallic particles
- Easy to finish
- Versatile consistency for horizontal, vertical, and overhead repairs
- Does not require separate bonding agent for most applications
Applications & Uses
- Markets
- Applications
- Application Area
- Compatible Substrates & Surfaces
- Uses
- Rapid structural and cosmetic repairs to any vertical or overhead concrete
- Fills holes, spalls, cracks or honeycombs on vertical or horizontal concrete
- Restore disintegrated surfaces of old concrete and masonry, cornices, lintels, sills, handrails
- Directions
Surface Preparation: Area to be repaired must be free of all dust, dirt, loose concrete, oil, grease, old asphalt, curing and sealing compounds, form release agents, efflorescence, or other contaminants that might interfere with adequate bond. Square cut perimeter of holes or cracks to a minimum width of 3/4 inch (1.9 cm) and depth of 1 inch (2.5 cm), undercutting to sound concrete when possible. Do not V cut cracks. Exposed reinforcing steel (NACE 3 Standard SSPC SP6) must be cleaned to a bright metal removing all rust or signs of oxidation. Chip out concrete behind or un-der rebar to a depth of 3/4” (1.9 cm). Coat any exposed steel with Polyweld EPXCI or other corrosion inhibiting bonding agent as specified and allow to dry. Immediately prior to placement of ChemPatch VO1 remove any re-maining dust or dirt with vacuum or oil free compressed air. Saturate the prepared area with clean, potable water to the point of rejection. Remove any puddles or standing water immediately before placing mortar so that concrete is in a Saturated Surface Dry (SSD) condition.
Bonding: When undercutting or squaring the edges of the patch is impractical or when application must be made in hot or dry conditions, use Cretelox as the mixing liquid for the slurry bond coat. Do not allow slurry bond coat to dry out before application of the mortar. Use 1 part Cretelox to 2 parts of water as the mixing liquid for the mortar con-sistency ChemPatch VO1. Refer to Cretelox product data sheet.
Mixing: ChemPatch VO1 sets rapidly. Mix only an amount that can be placed and leveled within 15 to 20 minutes. Con-dition the dry mortar and clean potable mix water to 65° to 75°F (18° to 24°C). Mix for approximately 1 to 2 minutes to achieve a lump free consistency. Do not over mix. Do not add additional water. Vertical / Overhead: Adjust consis-tency by using less water to make a stiffer mix. Over wa-tering causes excessive shrinkage and lower strengths. Do not add additional water or re-temper after initial mixing procedure. Do not add accelerating or bonding admixtures. When mixing one bag use a variable speed drill with a jiffler paddle. For less than full bag requirements, use a drill with a jiffler paddle to mix a proportionate amount of the dry ChemPatch VO1 powder and mix water. Scrub a mor-tar bond coat into the repair area being sure to fill all voids and pores. Do not allow bond coat to dry before place-ment of mortar.Application: Due to its rapid setting characteristics, place ChemPatch VO1 mortar in lifts of not more than up to 4 inches (up to 10.2 cm). Compact mortar firmly into repair area filling all voids and air pock-ets paying special attention to spaces beneath any rein-forcing steel. The top surface of each lift must have a 1/8 to1/4 inch (0.31 to 0.62 cm) raked profile. Keep surface of lift damp with fog spray, sprinkler hose or brush. Apply next layer within 15 to 20 minutes. When design depth is obtained, finish final placement to match surrounding sur-face texture.
Curing: ChemPatch VO1 continues to gain strength as long as it is damp. It generates considerable heat when used in quantity. Keep cool by wetting. Repaired areas should be kept damp for 20 to 30 minutes or cured with a water based curing compound such as Safe-Cure & Seal 309 or Polyseal WB. ChemPatch VO1 gains strength rapidly.
Extreme Temperature Application: Temperatures above 80°F (26.7°C): Cool the substrate with cool clean potable water. Prior to mixing keep material in cool, dry area, and use cold water for mixing. Temperatures below 50°F (10°C): Keep material warm and use lukewarm wa-ter to speed set time.
Properties
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Bond Strength Slant Shear (1 day) | 1340 (9.24) | psi (MPa) | ASTM C882 |
| Bond Strength Slant Shear (28 days) | 2380 (16.41) | psi (MPa) | ASTM C882 |
| Bond Strength Slant Shear (7 days) | 2250 (15.51) | psi (MPa) | ASTM C882 |
| Compressive Strength (1 day) | 4030 (27.81) | psi (MPa) | ASTM C109 |
| Compressive Strength (28 days) | 6230 (42.95) | psi (MPa) | ASTM C109 |
| Compressive Strength (7 days) | 5570 (38.40) | psi (MPa) | ASTM C109 |
| Flexural Strength (28 days) | 800 (5.52) | psi (MPa) | ASTM C78 |
| Freeze/Thaw Durability (loss after 50 cycles) | 1.7 | % | NYSDOT Test Method 502-3P |
| Modulus of Elasticity-Extended | 3.6x106i (24.84) | psi (MPa) | ASTM C469 |
| Plastic Shrinkage (7 days) | -0.04 | % | ASTM C1090 |
| Shrinkage (28 days, 100% R.H.) | 0.03 | % | ASTM C490 |
| Shrinkage (28 days, 50% R.H.) | -0.1 | % | ASTM C490 |
| Water requirement per bag | 3.25 - 3.5 (3.1 - 3.3L) | qt (L) | — |
| Working time [70°F (21.1°C)] | 20.0 | minutes | — |
Technical Details & Test Data
- Limitations
- Do not apply to frozen or frosted surfaces. Warm substrate to a minimum of 40°F (4°C) prior to applica-tion.
- Do not apply if ambient or substrate temperatures are below 40°F (4°C).
- ChemPatch VO1 hardens in 20 minutes, prepare only enough for immediate use.
- Do not exceed maximum recommended water con-tent. Do not use solvent based curing compounds.
- Do not add sand or gravel to extend. Use only admix-tures recommended by ChemMasters.
- Technical Details
Estimating Guide 50 lbs with 3.5 qt water yields approx 0.45 ft3 22.7 kg with 3.3 L water yields approx 0.0127m3
Packaging & Availability
- Packaging Type
- Packaging
Packaging and Part Number 50 lb (22.7 kg) 56 bags/pallet F2012.50
Storage & Handling
- Storage
Store between 40° and 90°F (4° and 32°C) in unopened bags on pallets in a dry area. Shelf life of properly stored material is one year from date of manufacture.