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DESCRIPTION
Xypex is a unique chemical treatment for the waterproofing, protection and improvement of concrete. XYPEX ADMIX C-1000 NF is added to the concrete mix at the time of batching. Xypex Admix C-1000 NF consists of portland cement and various active, proprietary chemicals. These active chemicals react with the moisture in fresh concrete and with the by-products of cement hydration to cause a catalytic reaction. This reaction generates a non-soluble crystalline formation throughout the pores and capillary tracts of the concrete that permanently seals the concrete and prevents the penetration of water and other liquids from any direction.
Note: The Xypex Admix C-Series has been specially formulated to meet varying project and temperature conditions (see Setting Time and Strength). Consult with a Xypex Technical Representative for the most appropriate Xypex Admix for your project.
COMPLIANCE:
Xypex Admix C-1000NF complies with the requirements of AS1478.1, as a type SN Special Purpose Admixture
RECOMMENDED FOR:
- Reservoirs
- Sewage and Water Treatment Plants
- Secondary Containment Structures
- Tunnels and Subway Systems
- Underground Vaults
- Foundations
- Parking Structures
- Swimming Pools
- Pre-Cast Components
- Roof Decks
ADVANTAGES
- Resists extreme hydrostatic pressure from either positive or negative surface of the concrete slab
- Becomes an integral part of the substrate
- Highly resistant to aggressive chemicals
- Can seal hairline cracks up to 0.4 mm
- Allows concrete to breathe
- Non-toxic
- Less costly to apply 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
PACKAGING
Xypex Admix C-1000NF is available in 14.5kg and 20kg buckets and 3kg soluble bags. For large projects, customised packaging is available.
STORAGE
Xypex products must be stored dry at a minimum temperature of 7ºC. Shelf life is one year when stored under proper conditions.
DOSAGE RATES
Xypex Admix C-1000NF ( No Fines Grade): 0.8% - 1.0% by weight of cementitious content.
Consult with Xypex Australia's Technical Department or your local Xypex representative for assistance in determining the appropriate dosage rate and for further information regarding enhanced chemical resistance, optimum concrete performance, or meeting the specific requirements and conditions of your project.
TEST DATA
PERMEABILITY
U.S. Army Corps of Engineers CRD C48-73 “Permeability of Concrete” Aviles Engineering Corp., Houston, USA
Two concrete samples containing Xypex Admix at 3% and 5% respectively, and an untreated control sample were tested for water permeability. Both the treated and untreated samples were subjected to a pressure of 150 psi. (350 ft. waterhead). Results showed moisture and permeated water throughout the untreated sample after 24 hours. However, the Xypex Admix samples showed no leakage, and water penetration of only 1.5 mm after 120 hours (5 days).
U.S. Army Corps of Engineers (CRD C48-73 "Permeability of Concrete" Setsco Services, Pte Ltd, Singapore
Six Xypex Admix-treated and six untreated concrete samples were tested for water permeability. Pressure was gradually increased over five days and then maintained at 7 bars (224 ft. waterhead) for 10 days. While the six reference samples showed water leakage beginning on the fifth day and increasing throughout the test period, the Xypex Admix samples showed no water leakage at any time during the test.
DIN 1048 "Water Impermeability of Concrete" DICTU S.A. Dept. Of Engineering and Construction Mgt., Santiago, Chile
Concrete samples 120 mm thick containing Xypex Admix were tested with the same size reference samples for water impermeability. Samples were subjected to pressure for 28 days. Water totally permeated the untreated samples but no water penetration was detected in any of the Xypex Admix-treated samples.
COMPRESSIVE STRENGTH
ASTM C 39 "Compressive Strength of Cylindrical Concrete Specimens" HBT Agra, Vancouver, Canada
Concrete samples containing Xypex Admix at various dosage rates (1%, 2% and 5%) were tested against an untreated concrete control sample. Compressive strength test results after 28 days indicated a significant strength increase in the samples incorporating Xypex Admix. The compressive strength increase varied between 5% and 20% (depending on the Xypex Admix dosage rate) over that of the reference sample.
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 as compared to the reference sample at 6460 psi (a 10% increase).
CHEMICAL RESISTANCE
JIS “Chemical Durability Test” Japanese Utility Company, In-house Test Report, Tokyo, Japan
Concrete samples containing Xypex Admix were tested against five samples containing other admixtures and against a control sample, to determine resistance to corrosion and deterioration caused by contact with aggressive chemicals. All samples were soaked in a 5% sulfuric acid solution at 20ºC for six months. Various evaluations and measurements were assessed every month during the test period, including: photographic comparisons, relative dynamic modulus of elasticity, percentage change in length, weight and flexural rigidity. Although the Xypex Admix sample was subjected to acid conditions well outside its published range, the results confirmed Xypex with the best performance among the seven samples tested.
“Sulfuric Acid Resistance Test” Aviles Engineering Corporation, Texas, USA
Concrete samples containing Xypex Admix at different dosage rates (3%, 5% and 7%) were tested against untreated control samples for Sulfuric acid resistance. After immersion in the Sulfuric acid, each sample was tested for weight loss on a daily basis until a weight loss of 50% or a definite response trend was obtained.
The percentage weight loss of the samples containing Xypex Admix tested significantly lower than the control samples.
“Sulphate Resistance Test” Taywood Engineering Ltd., Perth, Australia
Xypex Admix-treated concrete samples were immersed in an ammonium-sulphate solution and tested for "resistance in a harsh environment". The performance of the Xypex-Crystalline-Technology was compared with five other concretes, including one containing a sulphate-resistant cement. Each of the test samples was cured for seven days and then placed in an ammonium-sulphate solution (132 g/l) for 180 days. The rate of corrosion was determined by measuring weight loss, and length change was noted on a weekly basis. The Xypex-Crystalline-Technology substantially improved concrete performance as compared to the reference concrete and tested very similar to the sulphate-resistant concrete. The Xypex Admix-treated samples also provided the highest level of protection as measured by change in length.
FREEZE/THAW DURABILITY
ASTM C 666 “Freeze/Thaw Durability” Independent Laboratory, Ohio, 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, Michigan, USA
Exposure testing of potable water in contact with Xypex-treated samples indicated no harmful effects.
DIRECTIONS FOR USE
Xypex Admix C-1000 NF must be added to the concrete at the time of batching. The sequence of procedures for addition will vary according to the type of batch plant operation and equipment:
1. READY MIX PLANT - DRY BATCH OPERATION Prior to concrete being batched, add Xypex Admix in powder form to the drum of the ready-mix truck. After batching, mix the materials for 2 -3 minutes to ensure the Admix is distributed evenly throughout the batch.
A minimum of 10 minutes must elapse before discharge of the concrete. A further 1 minute of mixing at high speed immediately prior to discharge is recommended.
2. READY MIX PLANT - CENTRAL MIX OPERATION Mix Xypex Admix with water to form a very thin slurry (e.g. 7.0 kg of powder mixed with 13.0 litres of water). Pour the required amount of material into the drum of the ready-mix truck. The aggregate, cement and water should be batched and mixed in the plant in accordance with standard practices (taking into account the quantity of water that has already been placed in the ready-mix truck). Pour the concrete into the truck and mix for at least 5 minutes to ensure even distribution of the Xypex Admix throughout the concrete.
3. PRECAST BATCH PLANT Add Xypex Admix to the rock and sand, then mix thoroughly for 2 - 3 minutes before adding the cement and water. The total concrete mass should be blended using standard practices.
Note:
1. It is important to obtain a homogeneous mixture of Xypex Admix with the concrete. Therefore, do not add dry Admix powder directly to wet concrete as this may cause clumping and thorough dispersion will not occur.
2. Xypex soluble bags are most suited for use in the Dry Batch operation.
For further information regarding the proper use of Xypex Admix for a specific project, consult with a Xypex Technical Representative.
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. Extension of set time may occur when using Xypex Admix C-1000 NF. The amount of extended set will depend upon the concrete mix design and the dosage rate of the Admix. Concrete containing Xypex Admix may develop higher ultimate strengths than plain concrete.
Trial mixes should be carried out under project conditions to determine setting time and strength of the concrete.
LIMITATIONS
When incorporating Xypex Admix, the temperature of the concrete mix should be above 4ºC.
TECHNICAL SERVICES
For more instructions, alternative application methods, or information concerning the compatibility of the Xypex treatment with other products or technologies, contact the Technical Department of Xypex Australia or your local Xypex representative.
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 buckets and packaging. The Manufacturer also maintains comprehensive and up-to-date Material Safety Data Sheets on all its products. Each sheet contains health and safety information for the protection of your employees and customers. Contact Xypex Australia or your local Xypex representative to obtain copies of Material Safety Data Sheets prior to product storage or use.
WARRANTY
Concrete Waterproofing Manufacturing Pty Ltd (trading as Xypex Australia) (the "Manufacturer") warrants that the products manufactured by it shall be free from material defects and of a consistent quality. Should any of the products be proven defective, the liability of the Manufacturer shall be limited to replacement of the product ex-factory. The Manufacturer gives no warranty as to fitness of the products for any particular purpose. The user shall: determine the suitability of the product for its intended use; comply with the directions for use and safe handling information available from Xypex; where necessary, engage an experienced Xypex applicator; and assume all risks and liabilities in connection with the use of this product.
ADMIX C-1000NF - M.S.D.S. »
Download Product Data Sheet in PDF format: ADMIX C-1000NF (PDF 61 K)
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