Performance tests generally require the specimens are fabricated to a specific height and / or void volume.

Performance tests generally require the specimens are fabricated to a specific height and / or void volume.

• A. Not specified
• B. Unknown
• C. True
• D. False

Answer: (C)

Performance tests rely on consistent, comparable results, so specimens are molded to exact dimensions and target void content. The height of a specimen and its void volume directly influence density, internal structure, and how the material behaves under load. If these factors vary, test results can reflect differences in specimen geometry or compaction more than the material’s true performance, making comparisons unreliable. By standardizing the height and aiming for a specific void content, the test isolates the material’s properties and provides reproducible results. In practice, molds and specific compaction procedures establish the height, while the mix design and compaction energy target a particular air-void level, ensuring consistent performance measurements.

Performance tests rely on consistent, comparable results, so specimens are molded to exact dimensions and target void content. The height of a specimen and its void volume directly influence density, internal structure, and how the material behaves under load. If these factors vary, test results can reflect differences in specimen geometry or compaction more than the material’s true performance, making comparisons unreliable. By standardizing the height and aiming for a specific void content, the test isolates the material’s properties and provides reproducible results. In practice, molds and specific compaction procedures establish the height, while the mix design and compaction energy target a particular air-void level, ensuring consistent performance measurements.