The common specifications of quartz sand are: 0.5-1 mm, 1-2 mm, 2-4 mm, 4-8 mm, 8-16 mm, 16-32 mm, 10-20 mesh, 20-40 mesh, 40-80 mesh and 100-120 mesh.
　　As a mineral admixture, the addition of quartz powder/sand can form low water-binder ratio, high water-cement ratio, improve the hydration degree of cement, increase the density of cement, and then improve the strength of concrete, using its strong acid-resistant medium erosion ability, used to produce acid-resistant concrete and acid-resistant mortar.
　　From another point of view, the addition of quartz powder/sand can form a crystallization center, which can make the cement crystallize around quartz powder/sand during hydration and make the crystal grow. It can also improve the density of cement. In addition, quartz powder/sand itself has certain activity, can be hydrated, thus filling the capillary, reducing the porosity of cement stone, improving the integrity of cement stone, making it more vulnerable to damage. In conclusion, the application of quartz sand/powder in concrete still has broad prospects.