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在建筑施工中,要做到混凝土质量好成本低,混凝土的配合比合理与否,是关键问题之一。质量好的混凝土必须密实,强度符合设计要求,水泥耗用量少,成本低。要达到以上的目的,拌制混凝土的四种材料:水、水泥、黄砂、石子必须要有合理配合比。四种材料相互的关系是水和水泥混合成为水泥浆,用它去填满黄砂之间的空隙成为水泥砂
In building construction, it is one of the key issues to ensure that the quality of the concrete is low and the mix ratio of the concrete is reasonable. The concrete with good quality must be dense, the strength meets the design requirements, the consumption of cement is low, and the cost is low. To achieve the above objectives, the four materials used to mix concrete: water, cement, yellow sand, and stones must have a reasonable mix. The mutual relationship between the four materials is that water and cement are mixed into cement slurry, and it is used to fill the voids between the yellow sands to become cement sands.