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用“四合土”作建筑材料,在各地农田水利建设中是比较普遍的。它不仅造价低廉,而且可以代替水泥,解决当前水泥还不能全部满足需要的困难。如果使用得当,其作用并不比混凝土差,但如果使用不得法,却会给工程带来副作用,造成人力、物力的浪费。究竟应该怎样使用“四合土”呢?这是很多人所关心的一件事情。这里,根据我们的经验,介绍几个必须注意的问题。1.质料的选择:“四合土”是由石灰、粘土、砂子、卵石等材料组合而成的,其强度决定于质料的好坏。石灰一般须用新出窑的,已经气化了的石灰不能使用,
Use “Sihe soil ” for building materials, irrigation and water conservancy construction in various places is more common. It not only low cost, but also can replace the cement, to solve the current cement can not fully meet the needs of the difficulties. If used properly, its effect is not worse than that of concrete. However, if it is used illegally, it will bring side effects to the project, resulting in the waste of manpower and material resources. How should we use the “Sihe”? This is a lot of people are concerned about one thing. Here, based on our experience, introduce a few issues that must be noted. 1. The choice of materials: “Sihe soil ” is made of lime, clay, sand, pebbles and other materials from the combination of its strength depends on the quality of the material. Lime generally need to use a new kiln, the gasification of the lime can not be used,