For low cost ballast, medical shielding, radiation protection, a low cost HDM, high density material

PBM, or permanent ballast material, is commonly selected for its high density, extended lifespan, and cost-effectiveness. Hematite, lead, and concrete are the materials most frequently used for this purpose due to their favorable properties. Additionally, the use of permanent water tanks or compartment flooding may be employed as a form of permanent ballast, depending on the specific application at hand.

1. Lead
The high density of lead makes it an ideal ballast material; however, there are price, environmental and health concerns involved with its use. As such, lead shot is no longer as prevalent, though it remains common in the external bulbs of sailboats (where increased size is detrimental to performance).

2. Concrete
Concrete or cement is cheap, easily poured, fits around structure, and virtually maintenance proof over its lifetime. It has supplanted lead in most vessels today. It is also common to include scrap steel or excess rebar to increase density, with the concrete poured overtop of it.

3. HDM®
The ultimate solution for high-density and cost-effective ballasting needs. Combining a proprietary blend of steel, iron, oxides, and cement, HDM® packs a powerful punch as a permanent or removable ballast material. Not only does it provide the highest weight-to-cost ratio in the market, but it also boasts unparalleled versatility in application. HDM® can be mixed on-site, enabling it to take any shape of the void in which it is poured. This slurry or blown-dry material is specially designed to provide the necessary stability for radiation shielding blocks, protective blast walls, barriers, heavy drilling mud (patent-pending), ship ballast, counterbalance weights for lift bridges, or industrial machinery. With HDM®, you can trust in a durable and long-lasting solution that won’t weigh down your budget.