What Is Construction Stone Powder and How Is It Used?

Characteristics of Construction Stone Powder

• Color and chemical properties: Stone powder is usually white and insoluble in water. With its acid-absorbing and alkaline properties, CaCO₃ acts as an effective buffer in many chemical reactions.
• Melting point: Construction stone powder melts at approximately 825°C. When heated to this temperature, CaCO₃ decomposes into calcium oxide (CaO) and carbon dioxide (CO₂).
• Composition: The chemical composition and quality of stone powder depend on the raw material, which may include limestone, green stone, or other natural rocks. Higher quality input results in purer powder with fewer impurities, better whiteness, and finer texture.
• Physical properties: Stone powder has a smooth and fine surface, making it a suitable replacement for construction sand in some applications without compromising durability or aesthetics.
• Water permeability: Compared to sand, stone powder generally has lower drainage capability. Therefore, when used in mortar mixes, the mixture usually requires more time to achieve optimal cohesion.
• Economic efficiency: Using stone powder helps save costs compared to sand, while maximizing natural stone utilization. Instead of discarding smaller stones or leftovers, stone powder allows full use of materials, reducing waste and promoting environmental sustainability.

Stone powder is white in color and has a smoother surface than regular construction sand

Benefits of using construction stone powder

Stone powder (CaCO3) is increasingly preferred in construction due to its cost-effectiveness and performance advantages. Key benefits include:

• Cost savings: Stone powder is cheaper than many traditional materials, significantly reducing construction input costs while maintaining quality. It is also effective in products such as non-fired bricks, dry mortar, and concrete, saving raw materials and minimizing waste.
• Ensuring project quality: When combined with cement, sand, and other additives, stone powder enhances strength, load-bearing capacity, and weather resistance. Projects using stone powder have longer lifespans, with reduced cracking, breakage, or degradation, offering sustainable value for investors.
• Environmentally friendly: Using stone powder in non-fired bricks and eco-friendly concrete conserves natural resources and helps reduce CO₂ emissions, supporting green and sustainable construction practices.

Construction stone powder has low price, optimizing costs for businesses

Applications of construction stone powder in the building industry

Stone powder helps optimize costs, improve quality, and extend the lifespan of construction projects. Notable applications include:

Non-fired brick production

Non-fired bricks are increasingly popular due to their environmental friendliness and ability to replace traditional clay bricks. Stone powder acts as a key additive, enhancing strength, reducing water absorption, improving waterproofing, and increasing mechanical durability and lifespan.

Construction stone powder is used to produce unburnt bricks

Dry mortar and tile adhesives

In dry mortar and tile adhesive production, stone powder enhances product quality. Its fine particle size and stable properties increase adhesion, creating easily workable mixtures with strong bonding between tiles, saving time while ensuring long-term durability and aesthetics.

Concrete production

Stone powder is widely used in concrete, a fundamental construction material. Mixed with cement, it significantly improves concrete properties, including strength, load resistance, and workability, resulting in structures with longer lifespans, better weather resistance, and reduced risk of cracks or damage over time.

Other construction materials

Stone powder is also applied in producing high-quality finishing materials such as granito and terrazzo. Its fine texture, high whiteness, and abrasion resistance increase surface hardness, gloss, and waterproofing, delivering both aesthetic appeal and long-lasting durability.
To ensure quality and competitive pricing, VNapex supplies a wide range of construction stone powder products with various particle sizes and fineness levels. These products meet strict standards suitable for all construction applications, from residential projects to large-scale industrial developments

Stone powder is used to produce finishing materials in construction

Construction stone powder is not only a cost-effective choice but also enhances the quality and longevity of construction projects. Companies seeking high-quality stone powder products can contact VNapex for detailed advice on products and tailored solutions for each project.