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PROPORTIONAL CALIPER APPARATUS

CODE : R037
  • 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.

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STANDARDS

ASTM D4791