以北武夷山隧道麻子坑斜井破碎场生产的机制砂为研究对象,通过细骨料检测试验及混凝土配合比实验对其进行技术论证,并提出改良方案;通过机制砂供需量、生产成本与天然砂成本进行经济对比分析,论述了其经济可行性,结果显示经过改良后生产的机制砂可以用于配制混凝土。%For the manufactured sand produced at pock-pit slope broken field in the north of Wuyi mountain tunnels,we discuss technical feasibilities and put forward improvement scheme through the experiment of the fine aggregates detection and concrete mixing proportion testing.The economic feasibility of manufactured sand was discussed by analyzing the supply and demand and the cost of manufactured sand.The result shows that improved manufactured sand can be used in the concrete.
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