What is the maximum percentage of fines that ASTM C-33 sand can contain while meeting sand quality criteria?

The correct answer relates to the standards set forth for the use of ASTM C-33 sand, which is widely used in construction and concrete applications. To meet sand quality criteria, ASTM C-33 specifies that the maximum percentage of fines, which are smaller particles that may affect the overall performance and durability of concrete, should not exceed 5%.

Fines can influence various properties of concrete, including workability and strength, thus having a defined limit is essential for maintaining the integrity and performance of concrete mixes. When determining whether a particular sand meets the ASTM C-33 standard, it's crucial to ensure that the percentage of fines stays within this threshold to guarantee compliance with established guidelines.

Understanding this standard is essential for anyone involved in construction or materials science as it ensures the appropriate quality of materials used in projects, ultimately contributing to the safety and longevity of structures.