High Density Concrete

Pitts Little Corporation offers high density (HD) concrete up to 300 pounds per cubic foot. High density concrete gives a composite shield for both neutron and gamma radiation. High density aggregates are the key ingredient in high density concrete. The most common aggregates used to achieve the required densities are Hematite (Fe2O3), Ilmenite (FeO TiO2), Magnetite (Fe3O4) and Steel Aggregate.

The standard sizes of interlocking high density concrete blocks are 6” x 6” x 12” and 4” x 6” x 17”. Additional sizes are available upon request.

In addition to poured, pumped or conveyed high density concrete, Pitts Little Corporation also offers a complete line of high density blocks for radiation shielding. These include two sizes of chevron type interlocking HD blocks where grout is optional, two sizes of solid rectangular HD blocks with matching density HD grout and a 2-core HD masonry unit with matching density HD grout. These multiple size and shape options provided a simple solution to adding space-saving shielding to any wall, ceiling and floor without having to endure lengthy construction delays. You may also choose to work with your own local mason or concrete contractor to save money on installation.

6” Thick Interlocking High Density Concrete Blocks

Size: 6” thick x 6” tall x 12” wide Stock Densities: 240# per cubic foot / 3.84 grams per cubic cm 250# per cubic foot / 4.00 grams per cubic cm 300# per cubic foot / 4.81 grams per cubic cm

4” Thick Interlocking High Density Concrete Blocks

Size: 4” thick x 6” tall x 17″ wide Stock Densities: 240# per cubic foot / 3.84 grams per cubic cm 250# per cubic foot / 4.00 grams per cubic cm 300# per cubic foot / 4.81 grams per cubic cm

Solid Rectangular HD Blocks & Matching Density HD Grout

Sizes: 4”x4”x16” (Pictured) 4”x8”x16” Stock Densities: 250# PCF/4.01 GCC or 300# PCF/4.81 GCC

Custom High Density Concrete Blocks

We can produce solid pavers or multiple cavity high density CMU blocks. 2-Core HD Masonry Units & Matching Density HD Grout Size In-Stock: 12”x16”x4” (Pictured) Stock Densities: 250# PCF/4.01 GCC or 300# PCF/4.81 GCC

More Information

• High Density Concrete Technical Specifications

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