The fine aggregate is one of the basic raw materials of the concrete. The quality of the aggregate plays an important role in workability of flesh concrete and physic mechanics property and duration of the harden concrete.

• 细集料是配制混凝土的基本原材料，其质量优劣对混凝土拌合物的工作性和硬化混凝土的物理力学性能和耐久性均具有重要影响。