Crystalline waterproofing is a process where the active ingredients in a crystalline product react with the free lime and moisture in the concrete to form crystals within the capillary system of the concrete.

How does crystalline waterproofing work?

How Does It Work? Crystalline Waterproofing is usually supplied as an easy-to-use, dry powder. It is composed of Portland cement, silica sand and special chemicals. These chemicals react with water to cause long, narrow crystals to grow, filling the pores, capillaries and hairline cracks of the concrete mass.

What is crystalline coating?

Crystalline coating is a technology which is designed primarily for an additional protection of underground concrete parts of buildings against moisture and subsurface water.

What is crystalline in concrete?

Crystalline-based systems typically come in a dry, powdered form and are hydrophilic in nature. Unlike their hydrophobic counter-parts, crystalline systems actually use available water to grow crystals inside concrete, effectively closing off pathways for moisture that can damage concrete.

What is crystalline mortar?

Krystol Mortar Admixture (KMA) is a hydrophilic crystalline admixture used to provide long-term protection of masonry mortars and concrete masonry units against water and waterborne contaminants by reducing permeability and absorption of the mortar.

VELOSIT Crystalline Waterproofing Systems Explained

What is Sika waterproofing?

Sika Waterproofing Solutions Have Many Advantages

Sika has developed solutions for special site conditions, including microbiological and chemical attack resistant products, high mechanical resistance products, free of physically linked plasticizers and ecologically sustainable products.

What is bentonite waterproofing?

Bentonite waterproofing is an exterior waterproofing treatment that is supposed to work by forming a barrier between wet soil and the building foundation. Like any type of clay, bentonite absorbs moisture.

How do you apply crystalline waterproofing?

Crystalline waterproofing can be applied by a brush or with spray-on equipment. To ensure the success of the application, care must go into the conditions under which the material is applied related to surface preparation, surface wetting, coat thickness, and curing time.

Where can I use cementitious waterproofing?

Cementitious Waterproofing Application Areas:

1. Water Treatment Plants.
2. Sewage Treatment Plants.
3. Dams.
4. Railway & Subway Systems.
5. Marine Cargo Ports & Docks.
6. Parking Structures & Lots.
7. Tunnels.
8. Basements.

What is metal oxide waterproofing?

A-H® METALLIC WATERPROOFING is an iron type cement coat that has. been extensively used and recommended over many decades for parget coat hydrolithic waterproofing of interior concrete surfaces. Typical installation includes elevator, sump and other pits, and interior surfaces of pipe and other utility tunnels.

How do you apply waterproofing to polyurethane?

PU coat is applied by brush or roller in 2 layers. The first layer is applied 2-3 hours after priming/ The second layer should be applied crosswise after 8-24 hours, depending on the weather conditions. The final Polyurethane coat is sprinkled with a micron layer of clean sand.

In which system water in concrete is replaced by insoluble crystals?

Gaining popularity around the globe over the last three decades is the integral crystalline waterproofing system. This system involves the use of integral crystalline waterproofing admixtures. And these admixtures are added to the concrete during mixing. In turn, they become part of the hardened concrete.

What is liquid waterproofing?

Liquid waterproofing is the process of making a surface or object water resistant in given conditions by applying a liquid coating to it. The liquid coatings, whether single-or multiple-component, are easy to apply and provide long lasting protection to metals, wood, concrete and other surfaces.

Can you waterproof a basement from the inside?

Waterproofing a basement in the inside is a very popular option because it is done without major exterior excavation and, in some cases, can be done very quickly and economically.

How many types of waterproofing are there?

The most common types of waterproofing are cementitious waterproofing, liquid waterproofing membrane, bituminous membrane, bituminous coating, and polyurethane liquid membrane.

How do you make concrete waterproof?

How do you make concrete waterproof?

1. Flexible external waterproofing system for concrete. ...
2. Concrete admixtures for waterproofing. ...
3. Swelling tapes seal joints. ...
4. Can be reused as often as necessary: injection system for sealing joints. ...
5. Waterproofing formwork tie holes.

How long does cementitious waterproofing last?

It can be very expensive. And if you don't have the right product, you may need to do it all again in 10 years. A cheap product might last 10 to 15 years. A quality PVC membrane might be a third more expensive but last up to 60 years, so there are incredible benefits long-term.”

What are the 4 steps to waterproofing?

4 Steps for Waterproofing Pools

1. Smooth the Substrate.
2. Clean the Substrate.
3. Apply the Waterproofing Membrane.
4. Test for Leaks.

How long does it take for Xypex to work?

If backfilling takes place within seven days after the application, the backfilling material should be moist so as not to draw moisture from the Xypex coating. Xypex requires a minimum of 21 days of curing and crys- tal generation before the application of any paint or ep- oxy.

What is elastomeric waterproofing?

Rain or Shine Elastomeric Waterproofing Paint is a self-priming water-based waterproofing paint for exterior and interior concrete surfaces. It dries into a flexible film which is resistant to ultra-violet light and temperature variations. It can bridge hairline cracks of vertical concrete walls.

Does Xypex really work?

Yes. By blocking the intrusion of water into concrete, Xypex helps protect the concrete from the damaging effect of repeated freeze/thaw cycles. Yes. By preventing the intrusion of water, salt water, sewage, and most chemicals, Xypex helps protect reinforcing steel against oxidation and deterioration.

How long does bentonite waterproofing last?

In about 45 minutes, the Bentonite clay sets up resulting in a fairly solid, putty-like material. The Bentonite continues to expand for about the next 30 days as it forms a high-performance watertight membrane against the structure.

Does bentonite swell when wet?

Clays, especially bentonite, have high affinities for water, distribute themselves evenly throughout water, swell when they become wet and the reverse when they become dry, and have electrically active surfaces and high specific charges (charge/mass).

What does bentonite do?

The main uses of bentonite are in drilling mud and as a binder, purifier, absorbent, and carrier for fertilizers or pesticides. As of around 1990, almost half of the US production of bentonite was used as drilling mud. Minor uses include filler, sealant, and catalyst in petroleum refining.