fineness modulus

简明释义

细度系数

英英释义

例句

1.To achieve a specific grading, the fineness modulus 细度模数 of the sand must be adjusted accordingly.

为了达到特定的级配，沙子的fineness modulus 细度模数必须相应调整。

2.A higher fineness modulus 细度模数 indicates coarser aggregates which can affect the strength of the concrete.

较高的fineness modulus 细度模数表示骨料较粗，这可能会影响混凝土的强度。

3.Engineers often refer to the fineness modulus 细度模数 when selecting materials for road construction.

工程师在选择道路施工材料时常常参考fineness modulus 细度模数。

4.The fineness modulus 细度模数 helps in determining the particle size distribution of aggregate.

通过fineness modulus 细度模数可以确定骨料的颗粒大小分布。

5.The concrete mix design requires calculating the fineness modulus 细度模数 of the aggregates to ensure proper workability.

混凝土配合比设计需要计算骨料的fineness modulus 细度模数以确保适当的可加工性。

作文

The concept of fineness modulus is crucial in the field of civil engineering and construction, particularly when it comes to assessing the quality of aggregates used in concrete. The fineness modulus is a numerical value that represents the average size of the particles in a given aggregate sample. It is determined by performing a sieve analysis, where the aggregate is passed through a series of sieves with different mesh sizes. This process helps engineers and builders understand how well the aggregate will perform in various applications, such as in the production of concrete or asphalt. To calculate the fineness modulus, the cumulative percentages of the aggregate retained on each sieve are summed up and then divided by 100. This gives a single number that indicates whether the aggregate is fine, medium, or coarse. A lower fineness modulus typically indicates finer aggregates, which can lead to a smoother concrete surface but may also require more water for mixing. Conversely, a higher fineness modulus suggests coarser aggregates, which might provide better drainage but could result in a rougher finish. Understanding the fineness modulus is essential for achieving the desired strength and durability of concrete. For instance, if an engineer specifies a certain fineness modulus for an aggregate, it is likely because they have calculated that this specific gradation will yield the best results for the intended application. If the fineness modulus is not adhered to, the resulting concrete may not meet the necessary structural requirements, leading to potential failures or increased maintenance costs down the line.In addition to its role in concrete production, the fineness modulus also plays a significant part in other construction materials, such as mortars and plasters. The characteristics of these materials can vary significantly based on the fineness modulus of the aggregates used. Therefore, understanding and controlling this parameter is vital for ensuring consistency and quality across various construction projects.Moreover, the fineness modulus can also influence the workability of concrete. Fine aggregates tend to create a more cohesive mix, making it easier to handle and shape during the pouring process. However, if the mix is too fine, it may lead to segregation, where the heavier particles settle at the bottom and the lighter ones float to the top. This can adversely affect the uniformity and performance of the final product.In conclusion, the fineness modulus is a fundamental aspect of aggregate classification that directly impacts the performance and quality of concrete and other building materials. By understanding how to calculate and apply the fineness modulus, engineers and builders can ensure that their materials meet the required standards and specifications, ultimately leading to safer and more durable structures. Thus, mastering the concept of fineness modulus is essential for anyone involved in the construction industry, from students and professionals to researchers and educators.

“细度模数”这一概念在土木工程和建筑领域中至关重要，尤其是在评估用于混凝土的骨料质量时。“细度模数”是一个数值，表示给定骨料样本中颗粒的平均大小。它通过进行筛分分析来确定，在此过程中，骨料通过一系列不同网孔尺寸的筛子。这一过程帮助工程师和建筑商了解骨料在各种应用中的表现，例如在混凝土或沥青的生产中。要计算“细度模数”，需要将每个筛网上保留的骨料的累积百分比相加，然后除以100。这将得到一个数字，指示骨料是细的、中等的还是粗的。较低的“细度模数”通常表示更细的骨料，这可能导致混凝土表面更光滑，但也可能需要更多的水进行搅拌。相反，较高的“细度模数”则表明粗骨料，这可能提供更好的排水，但可能导致表面更粗糙。理解“细度模数”对于实现混凝土的所需强度和耐久性至关重要。例如，如果工程师为某种骨料指定了特定的“细度模数”，很可能是因为他们计算出这种特定的级配将为预期应用产生最佳结果。如果不遵循“细度模数”，最终的混凝土可能无法满足必要的结构要求，从而导致潜在的故障或增加后续维护成本。除了在混凝土生产中的作用外，“细度模数”在其他建筑材料中也起着重要作用，例如砂浆和抹灰。这些材料的特性可能会因使用的骨料的“细度模数”而显著变化。因此，理解和控制这一参数对于确保各种建筑项目的一致性和质量至关重要。此外，“细度模数”还会影响混凝土的可加工性。细骨料往往会形成更具粘性的混合物，使得在浇筑过程中更易于处理和成型。然而，如果混合物过于细腻，可能会导致分离，即较重的颗粒沉到底部，而较轻的颗粒浮到顶部。这可能会对最终产品的均匀性和性能产生不利影响。总之，“细度模数”是骨料分类的基本方面，直接影响混凝土和其他建筑材料的性能和质量。通过理解如何计算和应用“细度模数”，工程师和建筑商可以确保其材料符合所需的标准和规范，从而最终导致更安全、更耐用的结构。因此，掌握“细度模数”的概念对任何参与建筑行业的人来说都是至关重要的，从学生和专业人士到研究人员和教育工作者。