coarse aggregate

简明释义

粗糙骨料

英英释义

例句

1.The supplier delivered a large quantity of coarse aggregate for the new building project.

供应商为新建筑项目交付了一大批粗骨料。

2.The engineer specified a mix that included coarse aggregate to improve the compressive strength.

工程师指定了一种包含粗骨料的混合物，以提高抗压强度。

3.Using the right size of coarse aggregate can significantly affect the workability of concrete.

使用合适尺寸的粗骨料可以显著影响混凝土的可加工性。

4.In road construction, coarse aggregate plays a crucial role in providing stability and strength.

在道路建设中，粗骨料在提供稳定性和强度方面起着至关重要的作用。

5.The construction team decided to use coarse aggregate for the concrete mix to enhance durability.

施工团队决定使用粗骨料来增强混凝土的耐久性。

作文

In the construction industry, various materials are used to create strong and durable structures. One of the essential components in concrete production is coarse aggregate, which plays a crucial role in determining the strength and durability of the final product. Coarse aggregate refers to the larger particles in concrete mixtures, typically consisting of crushed stone, gravel, or recycled concrete. These materials provide bulk and stability to the concrete, ensuring it can withstand various loads and environmental conditions.The size of coarse aggregate usually ranges from 4.75 mm to 50 mm, which makes it significantly larger than fine aggregates, such as sand. The use of coarse aggregate in concrete has several advantages. Firstly, it improves the workability of the concrete mix, allowing for easier placement and compaction. This is particularly important in large-scale construction projects where efficient application is necessary.Moreover, coarse aggregate contributes to the overall strength of the concrete. By providing a rigid framework, it helps to distribute loads evenly throughout the structure. This is vital for buildings, bridges, and other infrastructure that must endure heavy weights and forces. Additionally, the type of coarse aggregate selected can influence the concrete's resistance to weathering and chemical attacks, which is essential for longevity in harsh environments.When choosing coarse aggregate, it is important to consider its grading, shape, and texture. Well-graded aggregates, which contain a variety of particle sizes, can lead to better packing and reduced voids in the concrete mix. This results in a denser final product with improved strength characteristics. The shape of the coarse aggregate also affects the concrete's properties; angular particles tend to interlock better, providing greater stability compared to rounded particles.Furthermore, the texture of the coarse aggregate can impact the bond between the aggregate and the cement paste. Rough-textured aggregates generally offer better adhesion, enhancing the overall performance of the concrete. Therefore, careful selection of coarse aggregate is essential for achieving high-quality concrete that meets specific engineering requirements.In recent years, there has been a growing trend towards using recycled materials as coarse aggregate. This not only helps to reduce waste but also promotes sustainability within the construction industry. Recycled concrete aggregate (RCA) can be processed to meet the necessary standards for strength and durability, making it a viable alternative to natural aggregates. The use of RCA as coarse aggregate can significantly lower the environmental impact of construction projects while still delivering reliable performance.In conclusion, coarse aggregate is a vital component of concrete that greatly influences its properties and performance. Understanding the importance of coarse aggregate and its characteristics allows engineers and builders to make informed decisions when designing and constructing structures. As the construction industry continues to evolve, the emphasis on sustainable practices will likely lead to increased use of recycled coarse aggregate, further highlighting its significance in modern construction.

在建筑行业中，各种材料被用于创建坚固耐用的结构。混凝土生产中的一个基本组成部分是粗骨料，它在决定最终产品的强度和耐久性方面发挥着至关重要的作用。粗骨料指的是混凝土混合物中的较大颗粒，通常由碎石、砾石或再生混凝土组成。这些材料为混凝土提供了体积和稳定性，确保其能够承受各种负荷和环境条件。粗骨料的大小通常在4.75毫米到50毫米之间，这使得它显著大于细骨料，如沙子。在混凝土中使用粗骨料具有几个优点。首先，它改善了混凝土混合物的可操作性，使得放置和压实更为容易。这在大型建筑项目中尤为重要，在这些项目中，高效的应用是必要的。此外，粗骨料有助于混凝土的整体强度。通过提供刚性框架，它帮助均匀分配结构中的负荷。这对于必须承受重物和力量的建筑、桥梁和其他基础设施至关重要。此外，所选的粗骨料类型可以影响混凝土对风化和化学侵蚀的抵抗力，这对于在恶劣环境中保持持久性至关重要。在选择粗骨料时，考虑其级配、形状和纹理是很重要的。良好级配的骨料，含有多种粒径，可以导致更好的堆积和减少混凝土混合物中的空隙。这会导致最终产品更密实，具有更好的强度特性。粗骨料的形状也会影响混凝土的特性；角状颗粒往往比圆形颗粒更好地互锁，提供更大的稳定性。此外，粗骨料的纹理会影响骨料与水泥浆之间的结合。粗糙纹理的骨料通常提供更好的粘附性，从而增强混凝土的整体性能。因此，仔细选择粗骨料对于实现满足特定工程要求的高质量混凝土至关重要。近年来，使用回收材料作为粗骨料的趋势日益增长。这不仅有助于减少废物，还促进了建筑行业的可持续发展。再生混凝土骨料（RCA）可以经过处理以达到强度和耐久性所需的标准，使其成为天然骨料的可行替代品。将RCA用作粗骨料可以显著降低建筑项目的环境影响，同时仍能提供可靠的性能。总之，粗骨料是混凝土的重要组成部分，极大地影响其特性和性能。理解粗骨料的重要性及其特征使工程师和建筑商在设计和建造结构时能够做出明智的决策。随着建筑行业的不断发展，对可持续实践的重视可能会导致再生粗骨料的使用增加，进一步突显其在现代建筑中的重要性。