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Bangsulee & NaturalSealer

Bangsulee NS-100

Description

Cracks in concrete always exist and their reasons are very diverse. Cracks in concrete are the underlying causes of concrete deterioration. They facilitate moisture, acids and salts to penetrate into concrete easily. Concrete is exposed to a various conditions and environments. The durability of concrete can be improved and the life of concrete is extended when its surface is properly treated. Bangsulee NS-100 is a Penetrating Waterproof and Hardener for the protection of concrete and the extension of concrete life.

Bangsulee NS-100 is water based penetrating waterproof and hardener and its main material is soluble silica. When it is applied on concrete, it penetrates into concrete, reacts with the excess calcium hydroxides of concrete and then forms additional C-S-H(calcium silicate hydrate) which is integrated with concrete. Because calcium hydroxides of concrete surface are already reacted with Bangsulee NS-100, the treated concrete surface is chemically stable and becomes stronger against chemical corrosion by acids, pollutants and salts. Additional C-S-H increases the density of concrete surface layer enough to prevent water seepage or chloride penetration. Bangsulee NS-100 provides breathable and durable treatments for concrete.

Concrete surface treated by Bangsulee NS-100 has reduced water permeability and water absorption and enhanced abrasion-resistance, chemical-resistance, freeze/thaw resistance and weathering resistance. It can be applied both new and old concrete. It chemically reacts with concrete and becomes in a body with concrete. It does not coat the surface of concrete, so the treated concrete breathes as ever. Its effect will be continuous unless cracking by structural failure. The densification of concrete surface goes better as time passes. The penetrating depth of Bangsulee NS-100 depends on porosity of concrete.

Soluble silica as the main material of Bangsulee NS-100 is based on the technology for Specifically modified silicate of YOUNG IL Chemical Co., Ltd.(Korean Patent No. 10-0495229 and 10-0556902.). Bangsulee NS-100 is optimized to penetrate into concrete and form more stable and durable chemical bonds than others sodium silicate or potassium silicate waterproofs. The potential possibility of efflorescence and expansive alkali-aggregate reaction is lowered because alkaline leaching is minimized.

Benefits

  • Prevent water seepage
  • Improve strength and abrasion resistance of concrete surface
  • Protection against chemical penetration
  • Prevention of damage caused by neutralization
  • Prevention of damage caused by repeated freeze-thaw processes
  • Prevention of damage caused by chloride ion penetration
  • Enhanced abrasion-resistance, chemical-resistance and weathering resistance
  • Protection of concrete and the extension of concrete life

Features

  • It is environmentally safe water based waterproof and hardener for concrete. Its main material is special soluble silica (Specifically Modified Silicate).
  • It effectively reacts with concrete, it is integrated in concrete and provides durable treatment.
  • The potential possibility of efflorescence and expansive alkali-aggregate reaction is lowered because alkaline leaching is minimized.
  • It does not coat the surface of concrete, so the treated concrete breathes as ever.
  • The appearance of the treated concrete is not changed.
  • Its penetrating depth depends on porosity of concrete.
  • The densification of concrete surface goes better as time passes.
  • It can be applied both new and old concrete.
  • Easy application

Uses

  • Waterproofing, protecting and hardening concrete buildings
  • Protecting and hardening exposed concrete
  • Protecting and hardening for concrete floor of chemical plants, agricultural storage warehouse and processing factory, parking buildings, convention centers, shopping malls, etc.
  • Protecting seaside concrete structures from salt damages
  • Protecting concrete structures in downtown area from carbonation

Packaging

18ℓ/container

Coverage Rate

The coverage rate 0.2ℓ/㎡ is recommended for new concrete with the compressive strength over 25 MPa. For old concrete with the compressive strength under 25 MPa, the coverage rate 0.3ℓ/㎡ is recommended. Coverage rate depends on the porosity of concrete. The appropriate coverage rate of treated concrete needs to be determined before application.

Application Recommendation

  • ① Cleaning the concrete surface
    The effect of Bangsulee NS-100 depends on its full and equal penetrating.
    It should not be applied to concrete surfaces that have been otherwise coated or oiled. Such surfaces must be cleaned before it is applied.
    It may be applied to damp surfaces, but it should not be applied on the surfaces which water is running over or there are puddles of water on. Such surfaces must be dried before application.
    It can treat both old and new concrete, but the newly poured concrete must be cured at least 28 days or more.
    The concrete surface to be treated need to be repaired and cleaned. Laitance also need to be removed.
    Near windows and cars need to be protected before application.
    ② Preparing waterproof
    Prepare Bangsulee NS-100.
    ③ Working conditions
    Apply Bangsulee NS-100 under surface temperature condition between 5℃ and 40℃. If the surface temperature is above or below the threshold, its treatment effect can not be guaranteed.
    Do not apply Bangsulee NS-100 in a very hot, freezing, rainy or high windy day.
    ④ Applying
    Apply Bangsulee NS-100 once by means of low-velocity spray unit. In order to apply full and equal penetrating, adjust spraying velocity, angle and moving speed of nozzle. The effect of Bangsulee NS-100 depends on its full and equal penetrating.
    Do not apply excess waterproof on concrete enough to make a puddle on the surface. After drying, the excess waterproof may form film caused to white stains.
    When applied on the vertical plane, apply waterproof from the top of surface for uniform application across the entire surface. Bangsulee NS-100 can be applied once more from the top of surface before the surface drying.
    ⑤ Curing
    Curing period is more than 3 days. The drying time is typically within one hour and very shorter than curing time. Longer curing time is better.
    Keep water not to run over or not to make puddles on the treated concrete surface at least for three days.
    Spray water on the treated concrete surface 2-3 times a day for days water dries quickly at high temperature.
    ⑥ Compatibility with other coatings
    If necessary, paint or coating can be applied on the treated concrete surface with Bangsulee NS-100. However, sufficient curing is needed before painting or coating.

Caution

  • Bangsulee NS-100 is only for concrete surface. Do not use for bricks or stones.
  • Because it is water based penetrating waterproof, it can penetrate under the condition the concrete surface can absorb water.
  • It is a specifically modified silicate based waterproof so it hurts glass and aluminum. Please, protect near windows and cars before application.
  • For the cracking bigger than 2㎜ or other structural failure, it is needed other treatment before the application.

Technical Data

  • Physical Properties
  • Appearance Transparent Liquid
    Odor None
    Main Component Soluble Silica (Specifically Modified Silicate)
    pH 11-12
    Specific gravity 1.2 - 1.3 at 25℃
    Viscosity Max. 30cps at 25℃
    VOCs None
    Freezing point 0℃ (32℉), Do not freeze.
    Storage 12 months at normal condition and closed container
  • Concrete Densification (SEM)
  • Improved Compressive Strength
  • VOCs (ISO 11890-2)
    None
  • Enhanced abrasion-resistance (KS F 2813) Under the abrasion condition H-22, 1000g, 500 cycles, the weight loss in the treated concrete is reduced to 55.5% compared with untreated concrete.
  • Others (KS F 4930)
    Reduces water permeability by 50~72%
    Reduces water absorption by 47~68%
    Alkali resistance, freeze/thaw resistance, and weathering resistance passed.
    Chloride ion penetrating depth is less than 3㎜ after dipping into 2.5% NaCl solution for 7 days.
    Acid resistance passed.
    Resistance to efflorescence passed.

Safety

  • Read the Material Safety Data Sheet before handling and using.
  • Protect from freezing. It is a water based product.
  • Wear safety glasses and rubber gloves. It is alkali solution so it may stimulate skin and eyes.
  • Wash out the exposed skin after applying.