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新修订的国家标准《建筑用砂》(GB/T14684—2001)中增加了人工砂的类别，这对解决我国一些地方天然砂资源短缺、合理利用矿产资源、保护环境及确保混凝土的质量都将产生重要影响。天然砂是一种不可再生的地方资源，随着国家基本建设规模日益扩大和农田、河道环境保护措施的逐步
The newly revised national standard “Construction sand” (GB / T14684-2001) added artificial sand category, which is to solve some parts of our country natural sand resources shortage, rational use of mineral resources, environmental protection and to ensure the quality of concrete will be Have a significant impact. Natural sand is a non-renewable local resources, with the increasing scale of national capital construction and the step-by-step environmental protection measures for farmland and watercourse