What is the significance of C117 in construction materials testing?

The significance of C117 in construction materials testing relates specifically to the process of accurately determining the amount of material finer than 75 micrometers (µm) in mineral aggregates through washing. This method is crucial in assessing the quality and gradation of aggregates used in concrete and asphalt mixtures. The presence of excessive fines in aggregates can adversely affect the strength and durability of the resulting concrete or asphalt.

By employing the C117 test, practitioners can ensure that the aggregates meet the specified standards for construction projects. This test helps identify the level of contamination or excessive fine particles, allowing for adjustments in material selection or processing to enhance the performance of concrete or asphalt. Understanding the amount of fine particles within the aggregate is essential for achieving the desired workability, strength, and resistance properties in construction applications, ensuring compliance with project specifications and industry standards.