Krystol Internal Membrane™ (KIM®)

Admixtures & Additives

Krystol Internal Membrane™ (KIM®)

Krystol Internal Membrane (KIM) is a hydrophilic crystalline admixture used to create permanently waterproof concrete.

KIM lowers the permeability of concrete, and is used in place of surface applied waterproofing membranes. By stopping the transmission of water through concrete, KIM adds durability and longevity to concrete by protecting it against chemical attack and corrosion of reinforcing steel.

Krystol technology, an admixture for concrete, reacts with moisture to form insoluble needle-shaped crystals that fill capillary pores and micro-cracks, enhancing concrete durability by blocking pathways for water and waterborne contaminants.

Unlike other concrete waterproofing solutions that rely on free lime, which depletes over time, KIM chemically reacts with water and unhydrated cement particles. This ensures that any moisture introduced over the lifespan of the concrete foundation will initiate crystallization, providing permanent waterproofing and resistance against hydrostatic pressure. Unlike a traditional waterproofing membrane, Krystol technology integrates into the concrete itself, delivering a long-lasting solution.

  • Lowers the cost of waterproofing
  • Helps to shave weeks off of construction schedules
  • Reduces the cost of maintenance and repairs
  • Increases reliability and quality control
  • Increases revenues with a larger building footprint
  • Safe for contact with potable water and Certified by NSF to NSF/ANSI Standard 61 Drinking Water System Components – Health Effects
  • Winner of the Most Innovative Product Award at World of Concrete in 2003

KIM is recommended for all concrete that will be subject to water pressure and can be used in precast, cast-in-place and shotcrete applications:

  • Below grade parking
  • Basements
  • Sewage plants
  • Swimming pools
  • Dams
  • Foundation walls
  • Footings
  • Slabs
  • Pits
  • Water containment tanks
  • Canals

Why Krystol?

Proven over 50 years

Krystol Internal Membrane, introduced over 50 years ago as the first crystalline technology, has proven its efficacy through the enduring longevity of the structures where it was used.

Integral admixture

Unlike surface applied solutions, such as waterproofing membrane, that can degrade over time, Krystol Internal Membrane in integral to the concrete, ensure it continues to work over the lifetime of the structure — no further maintenance required.

Permanent reactive technology

Moisture triggers crystallization throughout the concrete's life, ensuring permanent protection and long-term concrete durability.

Versatile

Krystol Internal Membrane is compatible with cast-in-place, precast, and shotcrete in any placement, offering concrete mix design flexibility while reducing shrinkage and crack in foundation.

Safe

Kryton’s waterproofing admixture is designed to combat sulfuric acid-producing bacteria (H2S), a common concern in water infrastructure. Kryton’s crystalline solutions are not based on pesticides and contain no silver or copper so are safe for contact with potable water and certified by NSF.

Sustainable

By making the concrete itself the waterproof barrier, Krystol technology can reduce carbon footprint and the need for additional materials and processes associated with external waterproofing or watertightness methods.

Resources

Technical Data Sheets

Technical Data Sheet – Krystol Internal Membrane (KIM)

Application Instructions

Application Instruction 1.11 – Cast-In-Place-Concrete

Application Instruction 1.21 – Instructions for Shotcrete Nozzelmen and Crew

Application Overviews

Waterproofing Wastewater Treatment Tanks

Waterproofing Elevators and Sump Pits

Waterproofing Bridges

Waterproofing Elevators and Sump Pits

Waterproofing Parking Garages (Cast-In-Place)

Waterproofing Parking Garages Shotcrete

Waterproofing against Secant Pilings

Waterproofing Watertanks and Reservoirs

Waterproofing Swimming Pools

Waterproofing Tunnels

FAQs

KIM – FAQ

Krystol Technology – FAQ

CSI Masterformat Specifications

KIM – Waterproofing Admixutre – Cast-in-Place – CSI (Div 03 30 00)

KIM – Waterproofing Admixutre – Shotcrete – CSI (Div 03 37 00)

CAD Drawing Details

Wall To Slab – Triple Protection

Wall To Wall – Double Protection – External Grout Method

Wall To Wall – Triple Protection

Slab To Slab – Double Protection – External Grout Method

Slab To Slab – Double Protection – Internal Swelling Method

Slab To Slab – Trple Protection

Wall To Elevated Slab – Double Protection – External Grout Method

Wall To Elevated Slab – Double Protection – Internal Grout Method

Wall To Elevated Slab – Double Protection – Internal Swelling Method

Wall To Elevated Slab – Triple Protection

Control Joint – Back Filled Wall

Control Joint – Blind Shoring Wall

Tie Back Blockout – Double Protection External Grout Method

Penetration – Tie Holes

Penetration – Internal Swelling Method

Penetration – External Grout Method

Expansion Joint – Heavy Duty Cover Plate Application

Expansion Joint – Joint Application

Expansion Joint – Deck To Wall Application

Expansion Joint – Angle Iron Application

Brochures

Krystol Internal Membrane™ (KIM®)

KIM is a hydrophilic crystalline admixture used to create permanently waterproof concrete.

Waterproofing Structural Shotcrete Without A Membrane 

Structural shotcrete is becoming a preferred concreting method in foundation construction, building tanks, parking garages and many other structures because it’s up to 50% faster than canventional cast in place.

Protect Marine Structures with Crystalline Waterproofing 

Use the right product and increase the lifespan of infrastructure in harsh marine environments.

Smart Concrete®

The most effective concrete waterproffing system in the world. Kryton’s Smart Concrete® solutions contain proprietary technologies thet allow concrete to respond to its environment to rotect itself against water penetration and corrosion, or erosion and abrasion.

Precast Concrete Waterproofing

Krystol Internal Membrane™ (KIM®) is a hydrophilic crystalline admixture used to create permanently waterproof concrete.

Construction and Repair of Concrete Tunnels

Construct watertight tunnel that last. Tunnels can be subjected to heavy traffic and vibration, temperature changes, corrosion damage and freeze thaw cycles which affect the tunnel’s durability.

Construction and Repair of Concrete Water Containment Structure

Construct watertight water containment structures that last. Take the risk out of creating watertight tanks from the begining by using Kryton’s Kryston Internal Membrane™ (KIM®) admixture and Krystol Waterstop Joint System.

Whitepapers

The Science of Kryston Technology

Krystol crystalline admixture and other technology is based on principles that are very similar to the processes that occur during the hydration and hardening of concrete. …

Silica Fume and KIM®

When concrete producers want to modify the properties of concrete, supplemental cementing materials (SCMM’S) can be used to achieve the intended goal. …

10 Reasons to Choose KIM® Admixture over Waterproofing Membrane Systems

It’s becoming clear to many leaders involved in the construction industry that waterproofing concrete from the inside out is the best choice. …

Do Blind-sided Applications have your back to the Wall?

Traditional waterproofing methods encourage the use of positive-side waterproofing during construction. However, this requires access to the outside wall of the concrete structure. …

Replace Unreliable Waterproofing Membranes

It’s the intelligent, self-sealing water-protection system that transforms concrete into a powerful water-resistant barrier througt crystalline admixtures or surface appied treatments. …

Krystol vs. Silicate-based Technology

Krystol waterproofing products are supplied as a dry powder comprised of Portland cemeber, silica sand and special chemicals. When combined with water, …

Brochures