fly ash

简明释义

黄铁矿灰

英英释义

例句

1.Using fly ash can reduce the environmental impact of cement production.

使用粉煤灰可以减少水泥生产对环境的影响。

2.The use of fly ash in bricks can significantly lower their weight and increase insulation.

在砖块中使用粉煤灰可以显著降低其重量并增加绝缘性。

3.The construction company decided to use fly ash for its concrete mix to improve durability.

建筑公司决定在混凝土中使用粉煤灰以提高耐久性。

4.The addition of fly ash in road construction helps in enhancing the strength of the pavement.

在道路建设中加入粉煤灰有助于增强路面的强度。

5.Many manufacturers are looking for sustainable materials like fly ash for their products.

许多制造商正在寻找像粉煤灰这样的可持续材料来制作他们的产品。

作文

Fly ash, or 粉煤灰, is a fine powder that is a byproduct of burning pulverized coal in electric power generating plants. It is composed primarily of silica, alumina, and iron oxide. The production of 粉煤灰 has significantly increased over the last few decades due to the rising demand for electricity and the growing number of coal-fired power plants worldwide. This byproduct is not just waste; it can be recycled and used in various applications, particularly in construction and civil engineering.One of the primary uses of 粉煤灰 is as a partial replacement for Portland cement in concrete. When mixed with water, cement, and aggregates, 粉煤灰 enhances the properties of concrete. It improves workability, reduces water demand, and increases strength and durability over time. Additionally, using 粉煤灰 in concrete can help reduce the overall carbon footprint of construction projects. This is because less Portland cement is needed, which is known to emit significant amounts of carbon dioxide during its production.In addition to its use in concrete, 粉煤灰 can also be utilized in other construction materials such as bricks, blocks, and tiles. Its lightweight nature and pozzolanic properties make it an excellent additive for these products. For example, when added to clay bricks, 粉煤灰 can improve their thermal insulation properties and reduce their weight, making them easier to handle and transport.Furthermore, 粉煤灰 can be used in soil stabilization and as a lightweight fill material in embankments and backfill applications. This helps improve the load-bearing capacity of the ground while reducing the overall weight of the structures built on it. The use of 粉煤灰 in road construction can also enhance pavement performance and longevity, providing a more sustainable alternative to traditional materials.Despite its many benefits, the use of 粉煤灰 is not without challenges. Concerns regarding the potential leaching of heavy metals and other contaminants from 粉煤灰 into the environment have been raised. Therefore, it is crucial to ensure that 粉煤灰 is sourced from reputable power plants and subjected to rigorous testing to meet safety standards before it is used in construction.In conclusion, 粉煤灰 is a valuable resource that can contribute to sustainable construction practices. Its ability to enhance the properties of concrete and other building materials makes it an attractive option for engineers and architects looking to reduce the environmental impact of their projects. By incorporating 粉煤灰 into construction processes, we can promote recycling and minimize waste, all while improving the performance and durability of our built environment. As the world continues to seek greener solutions, the role of 粉煤灰 in construction will likely grow, paving the way for a more sustainable future.

粉煤灰是燃烧粉煤时产生的细粉，是电力发电厂的副产品。它主要由二氧化硅、铝土矿和氧化铁组成。由于对电力的需求不断上升以及全球燃煤电厂数量的增加，粉煤灰的生产在过去几十年中显著增加。这种副产品不仅仅是废物；它可以被回收并用于各种应用，特别是在建筑和土木工程中。粉煤灰的主要用途之一是作为水泥的部分替代品，用于混凝土中。当与水、水泥和骨料混合时，粉煤灰可以增强混凝土的性能。它改善了可操作性，减少了水的需求，并随着时间的推移提高了强度和耐久性。此外，在混凝土中使用粉煤灰可以帮助减少建筑项目的整体碳足迹。这是因为需要更少的波特兰水泥，而波特兰水泥的生产已知会排放大量二氧化碳。除了在混凝土中的应用外，粉煤灰还可以用于其他建筑材料，例如砖、块和瓷砖。其轻质特性和火山灰特性使其成为这些产品的优良添加剂。例如，当加入粘土砖中时，粉煤灰可以改善其热绝缘性能并降低其重量，从而使其更易于处理和运输。此外，粉煤灰还可以用于土壤稳定和作为路堤和回填应用中的轻质填充材料。这有助于提高地面的承载能力，同时减少建在其上的结构的整体重量。在道路建设中使用粉煤灰也可以增强路面的性能和耐久性，为传统材料提供更可持续的替代方案。尽管有许多好处，但使用粉煤灰并非没有挑战。人们对粉煤灰中重金属和其他污染物可能渗漏到环境中的问题表示担忧。因此，确保粉煤灰来自信誉良好的发电厂并经过严格测试以符合安全标准至关重要。总之，粉煤灰是一种有价值的资源，可以促进可持续的建筑实践。它增强混凝土和其他建筑材料性能的能力，使其成为工程师和建筑师在寻求减少项目环境影响时的吸引选项。通过将粉煤灰纳入建筑过程，我们可以促进回收利用，减少废物，同时改善我们建成环境的性能和耐久性。随着世界继续寻求更环保的解决方案，粉煤灰在建筑中的作用可能会不断增长，为更可持续的未来铺平道路。