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随着我国建设事业的迅速发展,作为混凝土细骨料的建筑用砂的需求量日益增加,远途取河砂使其价格不断上涨,使用海砂的情况大有蔓延之势。
With the rapid development of construction in our country, the demand for construction sand as fine aggregate of concrete is increasing day by day, and the price of river sand is long-distanced to keep rising. The situation of using sea sand is spreading greatly.