subject: Matters Needing Attention In Sand Making [print this page] At present, the natural sand and gravel resources have been fewer and fewer. The manufactured sand gradually becomes the strong guarantee for modern industries and infrastructure construction. The manufactured sand, also known as hilly sand, crushing sand, aggregate chips, artificial sand and so on, is usually made from limestone, granite, basalt, diabase, pebbles and so on. Pay attention to that the powder content of manufactured sand has a great influence on the quality of manufactured sand, at the same time, has a influence on the performance of concrete and aggregate.
The rock flour is a kind of fine particle manufactured sand with the particle size less than 0.075mm. The rock flour is different from the mud powder. The rock flour is a part of the manufactured sand and it is the graded composition of manufactured sand. The adding of rock flour improves the bulk density of the base stock, increases the density of the interfacial transition zone, so that the strength of the interfacial filtering area. When the powder content is about 5-10%, the concrete has a better frost resistance; when the powder content is about 10%, the concrete has the best compressive strength and flexural strength.
It seems that the rock flour not only makes up the fine grading of manufactured sand, but also has an effect on the other features of manufactured sand. Therefore, in the preparation of concrete, architectural binders, fillers, it is necessary to choose the powder content depending on the different features requirements of the buildings. What more, in order to avoid the powder content of manufactured sand is too high or too low, the stone quarry should also pay special attention to the selection of the sand production line.
The hammer crusher produced by Henan Hongxing Mining Machinery Co., Ltd. has obvious superiorities in the production of manufactured sand. With high efficiency, low cost, excellent performance and high benefits, Hongxing hammer crusher is widely used at home and abroad and gets high praise from its users.
