The use of admixtures with waterproofing materials (liquids or membranes) offers numerous benefits:

  • Long-lasting protection from moisture
  • A chloride-free waterproofing application
  • Reduce crack development and shrinkage
  • Improves workability of mixed concrete
  • Enhances joint protection

Types of Admixtures

Chemical admixtures are added to concrete to alter its performance and properties. Its types include:

  • Set Retarders
  • Water Reducers
  • Set Accelerators
  • Air Entrainers
  • Specialty Admixtures (shrinkage control, corrosion inhibitors, coloring, etc.)
  • Superplasticizers

How do Concrete Admixture Function?

Waterproofing admixtures are added to concrete for more reinforcement; these compounds render organic pore plugging, pore-lining repellency, and other benefits. The percentage of admixtures in concrete formulations depend on the admixture type and the cement quantity. Generally, manufacturers recommend specific dosage levels for adding admixtures.

N.B. Dosage is expressed in kgs or liters/100 kg of cement.

Admixtures function in different ways:

  1. Changes in the rate of reaction by chemical interaction with cement.
  2. Better particle dispersion by adsorption.
  3. Higher air entrainment (in connection with surface tension of water)
  4. Increased plastic viscosity (by affecting the water’s rheology)
  5. Enhancing corrosion-resistant or water-repulsion.

Between Mixing and Hardening

  • Affect demand of water
  • Change stiffening rate
  • Modify air content
  • Change plastic viscosity

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What are Crystalline Admixtures?

Crystalline admixtures are used in cement-based materials to improve durability of concrete and healing of minor gaps in closed structures. Due to advancements in the waterproofing industry, new solutions are being studied for users to benefit from: One of them is self-healing concrete.

This type of concrete heals automatically, without any addition of external chemicals. One of its ingredients, crystalline admixtures, help to enhance its mechanical properties and reduce water permeability.

Technically, the reaction with cement particles forms insoluble deposits that augment CSH’s (Calcium Silicate Hydrate) density. The tri-calcium silicate and water help form the moisture-restricting crystals. Crystalline deposits resist pressures up to 14 bars.

Excess Use of Admixtures

  • Affects creep and shrinkage properties of concrete
  • Premature stiffening and segregation of concrete
  • Loss of workability
  • More heat generation; more chances of crack formation
  • Reduction in entrained air reduces strength by 5.5%
Waterproofing Techniques
Integral Waterproofing Surface Waterproofing
Direct addition of admixtures to the concrete External application of admixtures on the concrete surface with spray gun or brush
Batch or Continuous Process Continuous Process
No membranes Membranes included
Sealants and Injections included Sealants and Injections included
Less precision needed Require more precision

Can Crystalline Waterproofing Be Applied in Washrooms?

Yes, crystalline waterproofing can be applied in washrooms, primarily to restrict water ingress from cracks in walls and joints. Apart from that, it can be used on roofs, basements, terraces, and kitchens.

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Benefits of Crystalline Waterproofing

Crystalline waterproofing offers long-lasting protection, durability, and easy application. It is an eco-friendly and non-toxic chemical that doesn’t release any toxic gases in the atmosphere. Lastly, it is affordable for most users. Crystalline waterproofing is a long-lasting option. The crystals formed are deeply embedded in the crevices or gaps in walls and floors. This makes it difficult for anyone to remove them.

Advice: If you are looking for the best crystalline waterproofing experts, contact Sky Chemical Services.

Do you want to apply a long-lasting waterproofing option in your home or office? Connect with the best in the business. Experts from Sky Chemical Services are adorned with high skill and expertise: They can manage a variety of waterproofing methods, such as bitumen, polyurethane, cementitious, and more.

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