Knowde Enhanced TDS
Identification & Functionality
- Technologies
Features & Benefits
- Labeling Claims
- Ready-to-Use Product Features
- Advanatages
- Resists extreme hydrostatic pressure
- Becomes an integral part of the substrate
- Highly resistant to aggressive and chemical environments
- 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
- Increases flexibility in construction scheduling
Applications & Uses
- Markets
- Applications
- Compatible Substrates & Surfaces
- Recommended For
- Reservoirs
- Sewage and Water Treatment Plants
- Secondary Containment Structures
- Tunnels and Subway Systems
- Underground Vaults
- Foundations / Basements
- Parking Structures
- Swimming Pools
- Precast Components
- Bridge Structures
- Dosage Rates
Xypex Admix C-1000 (Regular Grade):
2 - 3% by weight of cement
Xypex Admix C-1000 NF (No Fines Grade):
1 - 1.5% by weight of cement- Note
i. For determining the appropriate dosage rate and for further information regarding concrete mixes containing fly ash / slag, enhanced chemical resistance, optimum concrete performance, or meeting the specific requirements and conditions of your project, consult with the local Xypex Technical Services Representative or Xypex’s Technical Services Department.
ii. The recommended minimum dosage rate for Admix C-1000 (Regular Grade) is 10 lbs. per yd³ (6 kg per m³); the maximum dosage is 20 lbs. per yd³ (12 kg per m³). For Admix C-500 NF (No Fines Grade), the minimum dosage is 5 lbs. per yd3 (3 kg per m³); the maximum dosage is 10 lbs. per yd3 (6 kg per m³).
iii. Under certain conditions the dosage rate for the Admix NF (No Fines Grade) may be as low as 0.8% depending on the quantity and type of total cementitious materials.
- Directions For Use
Admix C-1000/C-1000 NF 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, soluble bags 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. Truck addition (at plant): Add Xypex Admix in bulk powder form, soluble bags 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 soluble bags or 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. Additional high speed mixing time may be required when using repulpable bags. 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.
3. Addition to Central Mixer: Add Xypex Admix in bulk powder form, soluble bags 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. Additional high speed mixing time may be required when using repulpable bags. Account for worker safety issues when accessing the equipment.
Note:
i. Although addition on site in powder form is not normally recommended, it may be necessary. In such a case, add Xypex Admix to truck in slurry form (e.g. 3 parts powder 2 parts water by volume). Mix concrete for a minimum 5 minutes on high speed or until thoroughly dispersed. Account for added water in the mix design and slump.
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 honeycombing, tie holes, cracks beyond specified limits.
iii. Further guidelines are available that address the use Xypex Admix for a specific situation, (e.g. dry mixes, use 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. Admix C-1000/C-1000 NF is designed to have minimal or no effect on setting time. Concrete containing the Admix C-1000/C-1000 NF 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-1000/C-1000 NF. Consult with a Xypex Technical Services Representative for the most appropriate Xypex Admix for your project.
- Limitations
When incorporating Xypex Admix, the temperature of the concrete mix should be above 40ºF (4ºC).
Properties
- Color
- Appearance
- Light grey powder
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Chloride Content | max. 0.1 | % | — |
| pH | 12.0 - 12.4 | — | — |
| VOC | none | — | — |
Regulatory & Compliance
- Certification
Admix C-1000/C-1000 NF is certified as a water retaining admixture according to EN 934-2+A1. The certification of the product and regular audits of the FPC are carried out by Notified Body 1020 TZUS (060-051352).
Technical Details & Test Data
- Test Data
Freeze/Thaw Durability: ASTM C 666, “Freeze/Thaw Durability”, Independent Laboratory, Cleveland, USA After 300 freeze/thaw cycles, the Xypex Admix-treated samples indicated 94% relative durability.
Potable Water Exposure: NSF 61, “Drinking Water System Component-Health Effects”, NSF International, Ann Arbor, USA Exposure testing of potable water in contact with Xypextreated samples indicated no harmful effects.aNSF 61, “Drinking Water System Component-Health Effects”, NSF International, Ann Arbor, USA Exposure testing of potable water in contact with Xypextreated samples indicated no harmful effects.
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).
Packaging & Availability
- Packaging
Admix C-1000/C-1000 NF is packaged in convenient sizes of various types of packaging, including repulpable paper bags and soluble bags. Contact your local Xypex Technical Services Representative or dealer for details and availability.
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..