Knowde Enhanced TDS
Identification & Functionality
- Technologies
Features & Benefits
- Labeling Claims
- Ready-to-Use Product Features
- Product Highlights
Admix C-500 NF Red has been specially formulated to provide the unique Xypex crystalline waterproofing and protection, as well as a red oxide pigment to clearly identify concrete treated with the Xypex Admix. Refer to the relevant sections of this data sheet or consult with Xypex’s Technical Services Department for assistance in determining the appropriate dosage rate and for further information regarding enhanced chemical resistance, optimum concrete performance (e.g. setting time, compressive strength), or meeting the specific requirements and conditions of your project.
- Advanatages
- Resists extreme hydrostatic pressure
- Becomes an integral part of the substrate
- Highly resistant to aggressive chemicals
- Can seal static hairline cracks up to 0.4 mm
- Allows concrete to breathe
- Non-toxic
- No VOCs
- Less costly to install than most other methods
- Permanent
- Added to the concrete at time of batching and therefore is not subject to climatic restraints
Applications & Uses
- Markets
- Applications
- Application Area
- Compatible Substrates & Surfaces
- Recommended For
Precast Components
- manholes
- pipes
- culverts
- vaults
- septic tanks
- Dosage Rates
Xypex Admix C-500 NF Red:
2% by weight of cementitious content
- Directions For Use
Xypex Admix C-500 NF Red is added to the concrete at the time of batching. It is important to obtain a homogeneous mixture of Xypex Admix with the concrete. Do not add dry Admix powder directly to wet mixed concrete as this could cause clumping and thorough dispersion may not occur. The sequence of procedures for addition will vary according to the type of batch plant operation and equipment. The following methods have been used successfully in the past and it is recommended that the local Xypex Technical Services Representative be consulted about the best method to use.
1. Addition To Coarse Aggregate Belt: Add Xypex Admix in bulk powder form or repulpable bags directly to the coarse aggregate conveyor belt manually or through computer controlled mass batching system. Account for worker health and safety issues with moving belts and wind-blown dust issues.
2. Addition to Central Mixer: Add Xypex Admix in bulk powder form or repulpable bags along with the other components. Mix as per standard batching practices to ensure thorough dispersal of the Admix resulting in a homogeneous mixture. Account for worker safety issues when accessing the equipment.
3. Truck Addition (at Plant): Add Xypex Admix in bulk powder form or repulpable bags to the drum of the ready-mix truck immediately prior to driving the truck under the batch plant and adding the balance of the materials or the premixed concrete in accordance with standard concrete batching practices. Measures to ensure repulpable bags are dispersed include adding the bags as far forward in the drum as possible, adding a small amount of batch water with the bags, and spinning the drum prior to adding remaining ingredients. Avoid delays in adding other components and utilize high speed mixing to ensure homogeneity of mix. Where there may be insufficient water for thorough dispersion of the bulk powder, a water slurry can be made with the Admix and added to the truck mixer drum prior to batching. Account for added water in the mix design and slump.
Note:
i. For installations involving pan mixers, the recommended procedure would be to initially add some of the mix water and coarse aggregate to the pan mixer, begin mixing and slowly add the Xypex Admix powder. Mix until the Admix is thoroughly dispersed and forms a slurry, then add the balance of the materials and continue to mix as per normal.
ii. Concrete containing the Xypex Admix does not preclude the requirement for design of crack control, construction joint detailing, proper placement, consolidation and curing of the concrete and measures for repairing defects such as honeycombing, tie holes, cracks beyond specified limits.
iii. Further guidelines are available that address the use of Xypex Admix for a specific situation, (e.g. dry mixes, use of ice in hot ambient conditions, cold-weather concreting, etc.). Consult with a local Xypex Technical Services Representative or Xypex’s Technical Services Department for further information.
- Setting Time and Strength
The setting time of concrete is affected by the chemical and physical composition of ingredients, temperature of the concrete and climatic conditions. Xypex Admix C-500 NF Red is formulated for concrete mix designs where a normal or mildly delayed set is desired. Concrete containing the Admix C-500 NF Red may develop higher ultimate strengths than plain concrete. Trial mixes should be carried out under project conditions to determine the setting time and strength of the concrete dosed with Admix C-500 NF Red.
- Limitations
When incorporating Xypex Admix, the temperature of the concrete mix should be above 40ºF (4ºC).
Properties
Technical Details & Test Data
- Test Data
Compressive Strength: ASTM C 39, “Compressive Strength of Cylindrical Concrete Specimens”, Kleinfelder Laboratories, San Francisco, USA At 28 days, the compressive strength test of the concrete containing Xypex Admix measured 7160 psi / 49.5 MPa as compared to the reference sample at 6460 psi / 44.5 MPa (a 10% increase).
Freeze/thaw Stability: ASTM C 666, “Freeze/Thaw Durability”, Independent Laboratory, Cleveland, USA After 300 freeze/thaw cycles, the Xypex Admix-treated samples indicated 94% relative durability.
Packaging & Availability
- Packaging
Xypex Admix C-500 NF Red is packaged in 15 lb. (6.8 kg) pails and 25 lb. (11.35 kg) repulpable paper bags.
Storage & Handling
- Storage
Xypex products must be stored dry at a minimum temperature of 45ºF (7ºC). Shelf life is one year when stored under proper conditions.
- Safe Handling Information
Xypex is alkaline. As a cementitious powder or mixture, Xypex may cause significant skin and eye irritation. Directions for treating these problems are clearly detailed on all Xypex pails and packaging. The Manufacturer also maintains comprehensive and up-to-date Safety Data Sheets on all its products. Each sheet contains health and safety information for the protection of workers and customers..