FLY ASH BENEFICIATION

What is fly ash

and benefits of remediation

Coal combustion residuals (CCRs), or coal ash, is the waste from coal-fired power plants, and often contains contaminants like mercury, cadmium, arsenic and chromium, which are associated with serious health effects.

Fly Ash, a byproduct derived from the combustion of pulverized coal produced by coal-fired power plants, exhibits variable chemical components, typically encompassing oxides of silicon (SiO2), aluminum (Al2O3), iron, and calcium (CaO).

The pivotal inquiry surrounding Fly Ash revolves around its disposal, presenting challenges due to concerns associated with heavy metal content. Often deposited in holding lagoons or landfills, there’s apprehension about potential soil leaching or airborne release if lagoons were to rupture. Fortunately, Fly Ash serves as a pozzolan, demonstrating cementitious properties when mixed with lime and water. Recycled Fly Ash finds versatile industrial applications, serving as a key ingredient in asphalt, bricks, blocks, paints, tiles, and backfill. Notably, its chemical reaction with calcium hydroxide released during the mixing of cement and water makes it a compelling substitute for Portland cement in concrete. This recycled material contributes to environmentally friendly practices while enhancing concrete strength.

Our Ponded Ash Beneficiation System (PABS) produces Fly Ash that is a sustainable and performance-enhancing alternative, offering a range of advantages for various construction applications.

Beyond its environmental advantages, Our PABS Beneficiated Fly Ash presents several practical benefits:

  • Recognized as a non-shrink material
  • Facilitates the production of denser concrete with a smoother surface and sharper detail
  • Mitigates cracking in concrete
  • Reduces bleeding and permeability
  • Allows for flexible concrete set times
  • Enhances cold weather resistance
  • Boosts resistance to chemical erosion
  • Contributes to a reduction in CO2 emissions when used in concrete.

 

ECO-FRIENDLY SOLUTIONS

Fly Ash in Cement

Harnessing the power of PABS Beneficiated Fly Ash in your concrete mix not only replaces Portland Cement but also results in significant savings in concrete material costs. This environmentally-friendly solution not only meets but exceeds performance specifications, making it an ideal choice for sustainable construction practices.

 

Impactful benefits of using PABS Beneficiated Fly Ash

Fly Ash remediation is a cost-effective, performance-driven, and environmentally responsible solution contributing to both financial savings and sustainable building practices.

Environmental Sustainability: Fly Ash is a byproduct of coal combustion, making its use a sustainable alternative to traditional Portland Cement. By incorporating this industrial waste into concrete, you contribute to reducing the environmental impact associated with cement production.

Cost-Efficiency: Fly Ash is often more cost-effective than Portland Cement, providing a viable option for reducing material costs in construction projects. This economic advantage makes it an attractive choice for large-scale applications.

Improved Workability: Concrete containing Fly Ash tends to have enhanced workability, making it easier to handle, place, and finish during construction. This can lead to increased efficiency in the building process.

Enhanced Strength and Durability: Fly Ash contributes to the development of additional cementitious compounds, resulting in concrete with improved long-term strength and durability. This can lead to structures that withstand the test of time and environmental stresses.

Reduced Heat of Hydration: Fly Ash can help control the heat generated during the hydration process of concrete. This is particularly important in large concrete pours, preventing issues such as thermal cracking and ensuring better overall quality.

Lower Permeability: Concrete incorporating Fly Ash typically exhibits lower permeability, reducing the penetration of water and aggressive chemicals. This makes the concrete more resistant to deterioration caused by environmental factors.

Mitigation of Alkali-Silica Reaction (ASR): Fly Ash can mitigate the risk of alkali-silica reaction, a chemical reaction that can lead to the expansion and cracking of concrete. This contributes to the long-term durability of structures.

Recycling Industrial Waste: Incorporating Fly Ash into concrete provides a valuable means of recycling industrial waste, contributing to a circular economy and minimizing the environmental impact of coal combustion byproduct disposal.

 

2255 Glades Road, Suite 324A

Boca Raton, FL 33431

918 851 5349

203 482 6300

info@ash-tek.com

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Providing Ponded Ash Beneficiation Systems that benefit you and the environment.