What type of sand should you use with Roadware 10 Minute Concrete Mender?

Roadware recommends incorporating manufactured sand into repairs whenever possible. Sand enhances repair strength and boosts durability. It also increases the yield by 2.2 times. One gallon of mixed Concrete Mender combined with 2 gallons of 40-30 silica sand will yield approximately 2.2 gallons of repair material.

Both 40-30 grit silica sand and 40-30 grit quartz sand are similar in composition but differ in purity, applications, and physical properties:

1. Composition: Silica sand contains silicon dioxide (SiO₂) along with impurities like feldspar and clay, while quartz sand is almost pure SiO₂, making it higher in purity.
2. Applications: Silica sand is versatile and used in construction, glassmaking, and filtration. Quartz sand, due to its purity, is preferred for electronics, specialty glass, and high-precision applications.
3. Durability: Both are hard materials (Mohs hardness ~7), but quartz sand’s higher purity makes it more stable in extreme conditions.
4. Cost: Quartz sand is generally more expensive due to its purity and specialized uses

Aluminum oxide is a coarse abrasive material composed of aluminum oxide particles. This type of abrasive is commonly used for heavy-duty sanding, grinding, and surface preparation tasks. The material is very hard and features sharp edges that grip into the surface, making it effective for creating durable repairs with Concrete Mender products.

For the most durable repairs in mission-critical and heavy-duty applications, we suggest using Industrial Quartz sand or Aluminum Oxide. Standard silica sand may contain impurities, dust, and moisture, which can compromise the strength and durability of repairs. Therefore, it is advisable to test the sand before extensive use.