机制砂的生产及在混凝土中的应用

Sand mechanism for the production and application in concrete

天然砂作为常规建筑材料已有若干年的时间,但随着全球乃至我国大力提倡环保节能、科学发展、水土保持等一系列政策、法规及其制度的建立,其开采量将受到严重制约,寻找天然砂的替代材料将是必须面临的问题。而目前大量使用的机制砂是很好的取代材料,但又因为颗粒形状、级配、生产工艺等的落后而只能与天然特细砂混合使用(即混合砂)。文章较系统地对机制砂的生产、应用作了阐述。

The natural sand as a conventional building materials has been a number of years time,but the world and our country as a strong proponent of environmental protection, energy conservation, scientific development, soil and water conservation, such as a series of policies and regulations and the establishment of the system and its exploitation will be seriously constrained,Find alternative natural sand material will be a majority of the urban city and the country must face problems.At present the large-scale use of the sand is a good mechanism to replace materials, but because of particle shape,grade,production process,such as the backward but only with the natural ultra-fine sand mixed use （that is,mixed sand）.The text of a systematic mechanism sand production, application discussed.