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KMA is an admixture for cementitious mortar. It contains Kryton’s unique Krystol® technology that reacts with the cementitious materials in the mortar to form hydration crystals. These needle-like crystals block the capillary pores and micro-cracks within the mortar to dramatically reduce permeability and water absorption of mortar rendering over brick, block and other masonry walls.
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www.kryton.com
Protecting Your Projects Using Krystol Mortar Admixture (KMATM)
January 20, 2011World of Concrete
Interesting Facts About Water
Approximately 70% of the human body is made of water
About 75% of the Earth’s surface is covered in water
Without water, there would be no life on Earth
Water is also the leading cause of damage to your buildings
Why Water Damage is Costly
Leaks
Corrosion
Aesthetics
Block Walls
Krystol® Technology
Reacts with un-hydrated cement particles to form millions of needle-like crystals Transforms concrete into a water resistant barrierSelf sealing capabilitiesPermanent
When to use what?
Hydrostatic Pressure?
No?
Infrastructure? Hydrostop Restore & Protect System™
Mortar rendered building or precast
block?Krystol Mortar Admixture™
Yes?
New Construction? Krystol Internal Membrane™
Existing Construction?
Krystol T1/T2™
Krystol Mortar Admixture (KMATM)
Chemical admixture for cementitious mortar
Specialty chemicals that react with cementitious materials in mortar to form hydration crystals
Needle-like crystals dramatically reduce permeability & water absorption of mortar rendering over brick, block and other masonry walls
Key Benefits of KMA™
Provides water resistance without requiring a surface applied sealer
Reduces overall cost
Improves adhesion
Improves durability
Improves resistance to cracking
Typical Applications of KMA™
Damp-proof mortar rendering on brick, block and other masonry walls
Reduce permeability of plaster, stucco, and thin topping mixes
Rendering Mortar
A render is a mortar generally made up of cement, fine aggregate, water, and sometimes lime or a plasticizer
Applied to the face of a brick or block wall surface, usually in two or more coats, to form the finish of the wall
Other Applications for KMA™
Protect masonry mortar• Mortar between bricks
& block assembled into a wall
Reduce permeability of concrete bricks and blocks when they are manufacturedMost beneficial when used in brick and block walls that will not be covered by a render
KMA™ Projects
Check out some successful KMA projects from around the world here
Application of KMA™Application Instruction 110
KMA™ Application: Surface Prep
Surface must be clean and free of dirt, oil, or loose debris
Strongly recommended that the surfaces be “saturated” with clean water prior to applying rendering to achieve improved performance in adhesion, durability and reduced cracking
KMA™ Application: Mixing
1. KMA is a dry powder that is added directly to the mortar during mixing
2. Dose KMA at 2% by weight of cement—1 kg KMA per 50 kg cement.
3. Most KMA mixes will require less water than usual
KMA™ Application: Mixing
4. Can be added at any time during the batching process
a) plastic properties may vary with the time of addition depending on the mix proportions and site conditions. Adjust the mixing sequence as necessary to optimize the mix for your application.
5. Allow KMA to thoroughly mix at medium/high speed for a minimum of 2 minutes or until the admixture is fully incorporated
KMA™ Application: Install Mortar
1. Install mortar as normal. a) For increased damp-proofing
performance apply mortar up to 5 cm in 2 or more layers (see ASTM C926).
2. Continue occasional mixing as the material is being installed. Discard any material that shows signs of stiffening or setting—do not wet-up by adding water.
KMA™ Application: Curing
Proper curing is essential to achieve the performance and benefits
Wet curing with a fog mist spray, sprinkler or wet burlap for 3 to 7 days is recommended. Protect fresh applications from wind and direct sunlight.
Architectural Block/Stone Walls
KMA™ Features
Contains proven Krystol® technology
Reduces water permeability
Reduces water absorption
Resists weathering—a better alternative to liquid applied sealersImproves workability—reduces water demand
KMA™ Features Cont’d…
Reduces shrinkage and cracking
Self-seals hairline cracks
Reactivates in the presence of moisture—even years later
Provides improved resistance to waterborne chemicals such as sulfates and chlorides
Technical Data Sheet 502
More information:www.kryton.com
