Cemix CrystalProof Admix is an integral crystalline concrete waterproofing & durability enhancing admixture, which waterproofs and protects concrete in-depth. It consists of Portland cement, specially treated quartz sand and a compound of active chemicals. When CrystalProof Admix is mixed with the concrete when it is batched, the active chemicals combine with the free lime and moisture present in the capillary tracts of the concrete over time to form an insoluble, crystalline structure. These crystals continuously fill the pores and micro cracks in the concrete preventing any further water ingress (even under high hydrostatic pressure). These crystals are active for the life of the concrete meaning it is permanently protected.
The product still allows the passage of vapour through the structure (i.e. the concrete will be able to “breathe”). In addition to waterproofing the structure, CrystalProof Admix protects concrete against seawater, chloride ions, waste water, aggressive ground water and many other aggressive chemical solutions. CrystalProof Admix is suitable for use in contact with potable water and therefore can be used in water storage tanks, reservoirs, water treatment plants etc.
It is typically used for:
• Concrete requiring waterproofing & enhanced durability characteristics
• Water retaining structures & tanks
• Basement retaining walls
• In-ground structures
• Underground structures
• Lift shafts
• Swimming pools
• Drinking water tanks
• Sewage & water treatment plants
• Parking structures
• Marine structures & concretes exposed to chlorides
• Precast concrete
2kg, 4kg, 10kg & 25kg
APPLICATION: At 0.8% - 1% by weight of cement is added to the concrete at the time of batching. It is important to have the complete dosage of Cemix® Crystalproof Admix thoroughly mixed throughout the concrete mix. Do not add dry powder directly to wet concrete to avoid admixture balling. See technical advice if required.
DOSAGE: 1% by weight of cement (0.8% minimum).
TRIAL MIXES: Under normal conditions Cemix® Crystalproof Admix will produce normal setting times & increased compressive strengths. Pre-project trial mixes are recommended to establish exact setting times and concrete strengths.
CURING: Normal concrete curing practises should be adopted.
COVERAGE: 1% by weight of cement (0.8% minimum).
PACKAGING: Cemix® Crystalproof Admix is available in 2kg, 4kg, 10kg & 25kg pails.
STORAGE & SHELF LIFE: Can be stored in its original container tightly sealed in a dry place for a period of twelve (12) months after production.
CLEANING: Clean all tools with water & brush immediately after use.