砂石是混凝土中最大宗的原材料,我国在传统上把砂石称作混凝土的骨料。砂石在混凝土生产中具有不可替代的作用。混凝土广泛应用于土木工程,是指由胶凝材料将集料胶结成整体的工程复合材料的统称。普通混凝土一般指以水泥为主要胶凝材料,必要时掺入化学外加剂和矿物掺合料,与水、砂、石子,按适当比例配合,经过均匀搅拌、密实成型及养护硬化而成的人造石材。砂石生产举足轻重砂石作为骨架作用主要是稳定混凝土的体积,由于 Gravel is the largest of the concrete raw materials, China has traditionally called gravel concrete aggregate. Sand and gravel have an irreplaceable role in concrete production. Concrete is widely used in civil engineering, refers to the aggregate by the cementitious aggregate into the overall engineering composite materials collectively. Ordinary concrete generally refers to the cement as the main cementitious material, if necessary, mixed with chemical admixture and mineral admixture, and water, sand, gravel, according to the appropriate proportion, after uniform mixing, compacting and curing curing made of man-made Stone. Gravel production plays a decisive role Gravel as the main role of the framework of stable concrete volume, due to