Shell Content Test

Shell Content Test
The Shell Content Test is generally used to measure the proportion of shell pieces in natural sand and aggregates obtained from marine or river settings. Based on BS 812-106, this test is required for coastal construction where aggregates may include calcareous elements that might degrade concrete over time. High shell concentration can weaken binding strength and enhance chemical reactivity. Shells, which are porous and weak, may absorb more water, affecting the mix's workability and strength. This test guarantees that stable and inert aggregates are used, which protects structures from early deterioration or strength compromise.

Advantages of Shell Content Test:

• Detects potentially fragile shell materials in aggregates.
• Ensures the durability of coastal and marine concrete constructions.
• Reduces water absorption difficulties.
• Improves bonding strength and structural stability.
• Required for compliance in maritime zone projects.