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Cement-Based Penetrating Crystalline Active Materials for Waterproof Construction

Cement-Based Penetrating Crystalline Active Materials for Waterproof Construction

Cement-based penetrating crystalline active masterbatch is a core additive specialized in production: cement-based penetrating crystalline waterproof coating.

The main waterproof principle is: after the active compound contained in the material interacts with water, the water is used as a carrier to penetrate and fill the micropores and capillaries of the concrete, and the active compound that penetrates into the internal pores of the concrete interacts with the free calcium oxide in the concrete.
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  • Waterproof Agent
  • PTMA
  • 390000

Cement-Based Penetrating Crystalline Active Masterbatch


Cement-based penetrating crystalline active masterbatch is a core additive specialized in production: cement-based penetrating crystalline waterproof coating.

The main waterproof principle is: after the active compound contained in the material interacts with water, the water is used as a carrier to penetrate and fill the micropores and capillaries of the concrete, and the active compound that penetrates into the internal pores of the concrete interacts with the free calcium oxide in the concrete.

The reaction produces crystals of dendritic fibers that are insoluble in water. The crystals absorb water and expand in the pores of the structure, from sparse to dense, and gradually form a dense impermeable area, so that the whole structure has excellent waterproof and impermeability. And it has the effect of protecting the steel bars, increasing the density and increasing the strength.

Since the hydration reaction of cement is an incomplete reaction process, the reaction will still proceed after many years without losing water, and in the later hydration reaction process, it can also continue to catalyze active compounds to form crystals, so Even if the structure is penetrated again by water or partially damaged and cracked (the crack is less than 0.4mm), it can repair and heal itself under the action of crystallization, and has the ability of waterproof and impermeable many times.


Performance characteristics:
1. It has double waterproof performance.
2. It has extremely strong water pressure resistance.
3. It has unique self-repair ability.
4. It has the functions of anti-corrosion, aging resistance and protection of steel bars.
5. It has the reinforcing effect on the concrete structure.
6. It has a long-term waterproof effect.
7. It has the advantages of simple construction method, labor saving and time saving.
Reference formula:
Formula description:
1. Portland cement or ordinary portland cement should be used for cement. The grade must be 42.5 or higher. The storage time of cement should not be too long, generally it should not exceed 7 days.
2. Quartz sand must use machine screen sand with small water content and mud content, and fineness should use mixed sand in the range of 100-150 mesh.
3. The ratio of cement and quartz sand is the reference ratio. The ratio directly affects the strength of the product and the corresponding impermeability. It should be based on the quality of the cement purchased in each place.
Properly adjust the ratio of cement and quartz sand.
4. The water-cement ratio of the cement-based infiltration crystalline waterproof coating produced by the above reference formula is: 0.3: 1.

Performance identification:
1. Send to a testing agency with the ability to test the material. The second infiltration pressure (56 days) of concrete should reach 0.8Mpa or more.
2. Self-healing healing ability:

the storage tank can be made of concrete or cement mortar, and the cement-based infiltration crystal type with a thickness of 1 mm is painted inside or outside the storage tank Waterproof coating, curing for 3 to 7 days, add water to the water storage tank. After adding water for about 30 minutes, wet spots or watermarks will appear outside the water storage tank to keep the water in the water storage tank.
Observe the wet spots or watermarks on the outside of the storage tank every day. After about 7 days, the wet spots or watermarks on the outside of the storage tank will gradually decrease,After two months, all wet spots or watermarks on the outside of the storage tank will disappear and the outside of the storage tank will be completely dry.


Packaging and storage:
Package: 25 kg / bag (moisture-proof composite bag).
Storage: This product should be stored in a dry, cool and ventilated place, and it is strictly prohibited to get wet.
Shelf life: The shelf life of unopened products is 6 months from the date of production.


PTMA TECH is a provider of construction admixture for mortar, coatings & paints and concrete, which has three plants with R&D……
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