• Aggregates for Concrete - Memphis

    Aggregates for Concrete ... aggregates—sand, gravel, crushed stone, and air-cooled ... moisture (water-cement ratio) ASTM C 127 (AASHTO T 85)

  • Concrete : The Basic Mix

    A general teacher's guide for concrete ... 2 sand : 3 gravel by volume. Mix the dry ingredients and ... workability at low water to cement ratios and thus ...

  • 2 Concrete Materials - IN.gov

    2 Concrete Materials ... PCCP is normally constructed with paving concrete ... for sand and gravel, and from 0.0 to 2.5 percent for sand