Los Angeles abrasion loss calculator

Inputs in the worked example

The live calculator starts with these values; change any of them and every result, check and diagram updates instantly.

Worked example — results

• ✓ LA ≤ limit

Method, formulas and assumptions

• LA abrasion loss = 100*(5000-3870)/5000 = 22.6 %

Related site investigation calculators

• Particle density & water absorption (coarse aggregate) — Oven-dry, SSD and apparent particle densities and water absorption from the basket method.
• Rock uniaxial compressive strength & modulus — UCS of a rock core with the L/D correction, tangent modulus at 50% and the ISRM strength term.
• Brazilian tensile strength — Indirect tensile strength of rock discs σt = 2P/(π D t), averaged over the set.
• Slake durability index — Second-cycle slake durability index and Gamble durability class.
• Aggregate crushing value — Percentage passing 2.36 mm after crushing at 400 kN.
• Ten percent fines value (wet/dry strength) — Load giving 10% fines from a test at x kN producing y% fines: F = 14x/(y + 4); wet/dry variation.
• Flakiness index — Flakiness index from the flaky mass in each size fraction.
• Bulk density by wax coating — Bulk and dry density of an irregular lump from waxed mass in air and in water.
• Sand equivalent — Sand equivalent from clay and sand readings in the graduated cylinder (mean of trials).