Preparation method of artificial sand and preparation method of concrete

The invention provides a preparation method of artificial sand and a preparation method of concrete. The preparation method of the artificial sand comprises the following steps: randomly selecting two or three of sea sand, tailing sand and machine-made sand, and mixing the sea sand, the tailing sand and the machine-made sand together according to a preset first mixing ratio to form a mixture; and adding the mixture into a stirrer, and uniformly stirring to obtain the artificial sand. According to the invention, the required artificial sand and concrete can be prepared. 本发明提供了一种人工砂以及混凝土的制备方法。其中，人工砂的制备方法包括：从海砂、尾矿砂和机制砂中任意选择两种或三种，按预设的第一混合比例混合在一起形成混合物；将混合物加入搅拌机中拌和均匀，得到人工砂。应用本发明可以制备得到所需的人工砂和混凝土。