The Proportional Caliper Apparatus is designed to evaluate the shape characteristics of coarse aggregates by determining the percentages of flat, elongated, or flat and elongated particles.
This assessment is crucial for understanding how aggregate particle shape affects the performance of construction materials, particularly in terms of workability, compaction, and durability.
The apparatus features a pivoting arm mounted on a base plate, allowing for adjustable openings to accommodate various dimensional ratios.
Adjustable to four standard ratios (1:2, 1:3, 1:4, and 1:5), the device facilitates compliance with ASTM D4791.
Constructed from durable steel with a corrosion-resistant finish, the apparatus ensures longevity and consistent performance in laboratory environments.
