Natural Washed Concrete Sand (C-33) – Premium ASTM C-33 Spec Sand

Natural Washed Concrete Sand (C-33) | ASTM C-33 Compliant | Nationwide Delivery – National Site Materials

Content: National Site Materials proudly offers premium Natural Washed Concrete Sand that meets or exceeds ASTM C-33 specifications. This clean, finely graded sand is the industry standard for producing high-quality concrete, mortar, and grout mixes.

Our C-33 concrete sand is naturally washed and screened to remove clay, silt, organic matter, and other deleterious materials, ensuring excellent workability, superior strength development, and long-term durability in your concrete projects.

Key Features & Benefits

  • Meets ASTM C-33 requirements for concrete aggregates
  • Clean, double-washed, and kiln-dried for consistency
  • Uniform gradation for optimal cement paste bonding
  • Ideal for ready-mix concrete, precast products, masonry mortar, and stucco
  • Free of harmful chlorides, lignite, and alkali-reactive materials
  • Bright, natural color with low absorption

Common Applications

  • Ready-mix concrete production
  • Concrete block and brick manufacturing
  • Precast and prestressed concrete
  • Masonry mortar and grout
  • Asphalt concrete (hot mix)
  • Pipe bedding and backfill
  • Septic system drain fields
  • Golf course bunkers and sports fields

Ordering is Easy
Order online 24/7 or call our team for bulk pricing. We offer competitive pricing on loads from 1 cubic yard up to full truckload and rail quantities.

Nationwide Delivery
We ship Natural Washed Concrete Sand anywhere in the continental United States. Fast, reliable delivery via dump truck, pneumatic tanker, or rail – whatever works best for your job site.

Order Now – Available for immediate pickup or delivery across all 50 states.


Frequently Asked Questions – Natural Washed Concrete Sand (C-33)

  1. What does “C-33” mean?
    ASTM C-33 is the standard specification for concrete aggregates. C-33 sand has strict requirements for gradation, cleanliness, and durability, making it the preferred sand for structural concrete.
  2. Is this sand pre-washed and clean?
    Yes. Our Natural Washed Concrete Sand is double-washed and screened to remove silt, clay, and organic impurities, ensuring it meets or exceeds C-33 cleanliness standards.
  3. Can I use C-33 sand for masonry mortar?
    Absolutely. C-33 concrete sand is widely used for both concrete and masonry mortar because of its consistent gradation and workability.
  4. What is the difference between concrete sand and masonry sand?
    Concrete sand (C-33) is slightly coarser and has a more angular particle shape for better strength in concrete. Masonry sand is finer and rounder for smoother mortar finishes.
  5. How much C-33 sand do I need for a concrete mix?
    A typical 1:2:3 (cement:sand:gravel) mix by volume uses approximately 0.6–0.7 cubic yards of sand per cubic yard of concrete. Use our online calculator for exact quantities.
  6. Is this sand suitable for paver base or under pools?
    While it can be used in some bedding applications, most contractors prefer coarser concrete sand or crushed stone base for pavers and pool bases. Contact us for project-specific recommendations.
  7. Do you deliver to residential addresses?
    Yes. We deliver to homes, commercial sites, and construction projects throughout the entire United States.
  8. What are the minimum and maximum order sizes?
    Minimum order is 1 cubic yard for local delivery; we have no maximum and regularly ship full truck-and-transfer and railcar quantities nationwide.
  9. How quickly can I get delivery?
    Local delivery is often same or next day. Nationwide bulk shipments typically arrive within 3–10 business days depending on destination and order size.

Ready to order premium ASTM C-33 Natural Washed Concrete Sand with delivery anywhere in the U.S.?
Shop online 24/7 or call us today!

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