The General Specification of Civil Engineering Works (1992 Edition) mandates in Clause 10.09 that fine aggregate for concrete must consist of at least 95% by mass of quartz grains. This stipulation aims to ensure the quality of river sand used in construction.
Quartz, renowned for its durability and hardness, significantly contributes to the strength and longevity of concrete carriageways when used in high proportions within the aggregate. Its inherent resilience enhances the surface texture’s resistance to wear and tear from traffic loads.
Furthermore, this specification’s emphasis on high quartz content effectively minimizes the likelihood of impurities like shell fragments. Such impurities can weaken the concrete matrix and compromise its overall performance.
By prioritizing the use of quartz-rich river sand, the specification aims to create robust and long-lasting concrete carriageways that can withstand the rigors of daily use. This meticulous approach to material selection underscores the importance of quality control in civil engineering projects.