UC知道哪位大侠帮我翻译一下土木工程专外，跪求。。！
来源：百度知道 编辑：UC知道 时间：2024/05/27 11:29:11
2.4 PROPORTIONING AND MIXING CONCRETE
The various components of a mix are proportioned so that the resulting concrete has adequate strength, proper workability for placing, and low cost. The third calls for use of the minimum amount of cement (the most costly of the components) that will achieve adequate properties. The better the gradation of aggregates, i.e., the smaller the volume of voids, the less cement paste is needed to fill these voids. In addition to the water required for hydration, water is needed for wetting the surface of the aggregate. As water is added, the plasticity and fluidity of the mix increase (i.e., its workability improves), but the strength decreases because of the larger volume of voids created by the free water. To reduce the free water while retaining the workability, cement must be added. Therefore, as for the cement paste, the water-cement ratio is the chief factor that controls the strength of the concrete. For a given water-cement ratio, one select
The various components of a mix are proportioned so that the resulting concrete has adequate strength, proper workability for placing, and low cost. The third calls for use of the minimum amount of cement (the most costly of the components) that will achieve adequate properties. The better the gradation of aggregates, i.e., the smaller the volume of voids, the less cement paste is needed to fill these voids. In addition to the water required for hydration, water is needed for wetting the surface of the aggregate. As water is added, the plasticity and fluidity of the mix increase (i.e., its workability improves), but the strength decreases because of the larger volume of voids created by the free water. To reduce the free water while retaining the workability, cement must be added. Therefore, as for the cement paste, the water-cement ratio is the chief factor that controls the strength of the concrete. For a given water-cement ratio, one select
2.4配料及搅拌混凝土
各个组成部分的混合比例是使所产生的混凝土有足够的实力，适当可行放置，成本低。第三，要求使用的最低金额水泥（最昂贵的元件）将达到足够的性能。更好地分级的总量，即规模较小的体积空隙，减少水泥浆体需要，以填补这些空隙。在除水所需的水化，水是需要的润湿表面的总和。由于加水，可塑性和流动性结构增加（即，其操作性，提高） ，但强度下降，因为体积较大的孔洞所产生的游离水。以减少游离水，同时保留是否可行，水泥必须补充的。因此，对于水泥浆体，水灰比是行政因素，控制的力量，具体。对于给定水灰比，一选择最低还款额的水泥将确保理想的可行
混凝土的成分比例和混合