Mastermix Armor
High-Strength Waterproof Barrier for Wastewater Applications
Armor is a premium-grade, hydrophobic coating engineered for high-performance protection. With exceptional adhesion, Hydrogen Sulphide, acid and alkali resistance, and the ability to withstand compressive loads up to 14.7 MPa, it forms a durable, waterproof barrier ideal for demanding environments.
Key features:
- Outstanding Acid Resistance: Performs in extreme acidic conditions, including sulphuric, phosphoric, and
hydrochloric acids - Alkaline Resistant: Also resists chemical degradation from alkaline exposure
- Waterproof & Hydrophobic: Creates a barrier that prevents water ingress
- Potable Water Safe: Certified to AS/NZS 4020:2005
- High Strength & Low Shrinkage
- Full compressive hardness in approx. 12 hours
- Tested to EN 1348, AS134, and NZS 3112
- Proven Durability: Accelerated testing confirms 50+ year performance in pH 3.5 sewer conditions
Armor is cement-based and free from aggressive chemicals. Avoid excessive skin contact, eye contact or swallowing. Freshly mixed concrete or mortar may cause skin irritations, including alkaline burning and dermatitis. Avoid contact with the skin by wearing suitable clothing and gloves. In the event of contact with the eyes or skin, rinse thoroughly with water. If swallowed, drink plenty of water and do not induce vomiting. Seek medical advice.
Prepare the surface of the substrate to ensure it is clean of grease, loose and weak materials, and other foreign matter. High pressure washing at 3,000–10,000 psi is recommended to achieve a good clean substrate, with the excess water being removed with compressed air.
Mix 20kg of Armor with 2 litres of clean water. Start with 1 litre and keep adding water until a homogeneous, lump-free mix is obtained. Mix by mechanical means for several minutes until the mix peaks when the mixer is lifted out of the mix. Allow to mature for 5–8 minutes before applying. Spray or trowel onto the substrate ensuring good keying is obtained. On initial application on vertical faces it may be necessary to trowel from bottom to top for placement. As the product sets, final finishing can be trowelled in any direction. For thick build-ups, the product will key to itself.
Armor contains the correct levels of plasticiser and additives. Adding extra may seriously compromise the correct function of the mix. DO NOT ADD EXTRA WATER, as this may cause shrinkage of the product. Once the product is placed and finished, DO NOT REWORK as this may affect the final setting of the mix. Clean tools with water while the product is still green. Wear gloves to facilitate ease of hand cleaning.
Disclaimer: Technical details and recommendations are based on our best knowledge and experience. The user must ensure suitability for the specific project before application, and is fully responsible for the product’s use and its consequences.
Warranties may be offered, subject to project assessment and application by a MasterMix-approved applicator.
Technical data
| Strengths |
• Compressive: 14.7 MPa • Flexural: 6 MPa • Adhesion: >1 MPa |
| Shrinkage | 0.005% |
| Alkaline Resistance | Yes |
| Acid Resistance | Yes |
| Water resistance | Waterproof and Hydrophobic |
| Potable Water Safe | Yes (AS/NZS 4020:2005 compliant) |
| Working Time | Up to 20 minutes at 20°C |
| Curing Time (varies with temperature, humidity, and moisture content) | Approx. 12 hours at 20°C for compressive hardness. |
| Application Temperature | 7°C - 25°C |
| Coverage (Approx.) | 20kg @ 10 mm: 1.2 m² |
| Shelf Life | 6 months (store in sealed pails in cool, dry area) |
| Durability | Tested in pH 3.5 sewer conditions and verified for 50+ years |
Technical data
‘Armor’ has been tested and conforms to AS/NZS4020-2005, these tests include Taste, Turbidity, Aquatic Micro Organism growth, Cytotoxic activity, Mutagenic activity and Extraction of metals. For further information please contact our Technical Department for a full copy of the test report.
Adhesion >1 Mpa Compressive Strength 14.7MPa
Flexural Strength 6MPa Residual Strength 11.26MPa
Shrinkage 0.005% Acid Resistance Very high when immersed at pH0
Armor is a cement based product and contains no additional
aggressive products. See packaging for full details.
Armor should be applied in temperatures between 7°C and 25°C applies to both substrate and ambient) and will remain workable up to 20 minutes at 20°C. Temperature, humidity and water content will affect the workability time. Armor should not be applied in temperatures below 7°C.
Although the technical details and recommendations Contained in this document correspond to the best of our knowledge and experience, all the above information must in every case be taken as merely indicative and subject to confirmation after long term practical applications.
For this reason, anyone who intends to use the product must ensure, beforehand, that it is suitable for the envisaged application. In every case, the user alone is fully responsible for any consequences deriving from the use of the product.
