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R-E-D Nano Silica

R-E-D Industrial Products provides spray-dried nano silica powders, some of which include a small lithium addition for ASR mitigation. Nano silica powder is advantageous in dry-mix applications and significantly improves the properties of concrete, mortar, shotcrete and gunite.

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R-E-D Nano Silica in Cementitious Applications: The nano sized particles have a large surface area and high degree of reactivity providing an abundance of nucleation sites for calcium silicate hydrate (C-S-H) to form. Additionally, the pozzolanic reaction between nano silica and calcium hydroxide (Ca(OH)â‚‚) produced during cement hydration also contribute to the formation of (C-S-H). This makes it particularly effective to accelerate early strength development with controlled heat release. Other key performance benefits in cementitious applications are increased strength, reduced permeability, enhanced durability, better workability/finishing, compatibility with admixtures and improved sustainability.

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R-E-D Nano Silica Powder Properties & Applications

Spray-dried Nano Silica Powder Properties:​

​R-E-D produces spray dried nano silica powders for dry-mix applications and products where suspended colloidal silica solutions aren’t a good fit.

  • Primary particles are 5nm to 20nm in size

  • The average particle size of the powder after spray drying is 20-25 microns

  • These particles are easily deagglomerated to the low micron range

  • There are no residual salts

  • Lithium addition option to mitigate ASR
     

Spray-dried Nano Silica Powder Applications
(Dry Powder Products):​

  • Pre-mixed Products

  • Repair & Rehabilitation

  • Underground/Mining

  • Shotcrete/Gunite Mortars

  • Grout & Mortar

  • Underwater/Marine

  • Rapid-Set  

  • Self-consolidating mixes

  • Specialty

  • UHPC/HPC
     

How can Nano Silica with a Lithium addition mitigate ASR?

​Mitigation of alkali silica reaction (ASR) with Lithium stabilized nano silica can be an excellent and cost-effective alternative to lithium nitrate. This is a result of the synergistic properties of the two materials when used in combination. Nano silica reduces permeability and refines pore structure so that free alkalis are bound and water ingress in limited. A small addition of well dispersed lithium reacts with reactive silica in aggregates to form a non-expansive lithium-silicate gel instead of an expansive alkali-silicate gel. The two functions of each material significantly reduce the conditions necessary for ASR progression.

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R-E-D Nano Silica & Sustainability​

R-E-D Industrial Products Nano Silica Powder provides high-quality results and real-world solutions to sustainability issues. We stand behind our product's ability to deliver performance that promotes long-term durability. Take a look at the information below to see how Nano Silica can help with your sustainability needs in your next project. 

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Implementation of Nano Silica Sustainability

  • Environmentally friendly and non-hazardous

  • Improves durability and longevity of concrete lowering life cycle costs

  • Utilized in repair & rehabilitation applications that stabilize decaying structures and infrastructure improving lifecycle

  • Used in environmental remediation applications to prevent seepage of contaminants and toxins into soil and groundwater

  • Prevents environmental consequences in industries such as landfills and oil/gas where harmful chemicals need to be contained

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