中文摘要：

试验研究了机制砂的材料特性，分析了机制砂在我国的生产与应用现状，并提出了机制砂在混凝土中应用应考虑的石粉含量、配合比设计思路、机制砂生产技术、品质管理、科学研究、工程应用、宣传导向等几个问题。

英文摘要：

An experimental investigation on properties of machine-made sand has been made in this paper. The current situation of manufacture and application of the machine-made sand in China is discussed,and several relative issues of machine-made sand in concrete,such as content of rock powder, design of mix proportion,machine-made sand production techniques,quality control management,scientific research,projects application and its propaganda orientation etc. are proposed.