fly ash

简明释义

飞灰

英英释义

例句

1.The environmental benefits of using fly ash include reducing landfill waste.

使用粉煤灰的环境好处包括减少填埋场废物。

2.Many engineers recommend fly ash for its durability and resistance to chemical attacks.

许多工程师推荐使用粉煤灰，因为它耐用且对化学侵蚀有抵抗力。

3.The construction company used fly ash to enhance the strength of the concrete mix.

建筑公司使用了粉煤灰来增强混凝土的强度。

4.Using fly ash can improve the workability of concrete.

使用粉煤灰可以改善混凝土的可加工性。

5.In many regions, fly ash is a common additive in cement production.

在许多地区，粉煤灰是水泥生产中的常见添加剂。

作文

Fly ash is a byproduct of burning pulverized coal in electric power generating plants. It is a fine powder that is carried away from the combustion chamber by flue gases. The use of fly ash (煤灰) in construction and building materials has gained significant attention due to its potential benefits. This essay will explore the properties, uses, and environmental impact of fly ash (煤灰). Firstly, fly ash (煤灰) has several advantageous properties that make it an attractive material for construction. It is pozzolanic, meaning it can react with calcium hydroxide in the presence of water to form compounds possessing cementitious properties. This characteristic allows fly ash (煤灰) to be used as a partial replacement for Portland cement in concrete production. By incorporating fly ash (煤灰), the strength and durability of concrete can be improved while reducing the overall carbon footprint associated with cement production. Additionally, fly ash (煤灰) enhances the workability of concrete, making it easier to mix and pour, which is beneficial for construction projects. Secondly, the applications of fly ash (煤灰) extend beyond concrete. It can be used in various construction materials, including bricks, blocks, and pavement. The incorporation of fly ash (煤灰) in these materials not only improves their mechanical properties but also contributes to sustainability efforts by recycling waste from coal combustion. Furthermore, fly ash (煤灰) can be utilized in geotechnical engineering applications, such as soil stabilization and lightweight fill materials. These diverse applications highlight the versatility of fly ash (煤灰) in the construction industry. Another important aspect to consider is the environmental impact of using fly ash (煤灰). Traditionally, the disposal of fly ash (煤灰) has posed significant challenges, as it is often stored in landfills or ash ponds, leading to potential environmental hazards such as leachate contamination and air pollution. However, by repurposing fly ash (煤灰) in construction, we can mitigate these issues and promote sustainable practices. Utilizing fly ash (煤灰) not only reduces the demand for natural resources but also minimizes the environmental footprint of construction activities. Despite the numerous benefits, there are also challenges associated with the use of fly ash (煤灰). Variability in the chemical composition of fly ash (煤灰) from different sources can affect its performance in concrete. Therefore, it is essential for engineers and construction professionals to conduct thorough testing and quality control to ensure that the fly ash (煤灰) used meets the required standards for specific applications. In conclusion, fly ash (煤灰) is a valuable material in the construction industry that offers numerous advantages, including enhanced concrete properties, sustainability benefits, and reduced environmental impact. As we continue to seek innovative solutions to address the challenges of waste management and resource conservation, the role of fly ash (煤灰) will undoubtedly become more prominent. By embracing the use of fly ash (煤灰), we can contribute to a more sustainable future while improving the quality of our built environment.

煤灰是电力发电厂燃烧粉煤时产生的副产品。它是一种细粉，随烟气从燃烧室中带走。由于其潜在的好处，煤灰在建筑和建材中的使用引起了广泛关注。本文将探讨煤灰的性质、用途和环境影响。 首先，煤灰具有多种有利特性，使其成为建筑材料的理想选择。它是火山灰质的，这意味着它可以在水的存在下与氢氧化钙反应，形成具有胶结性质的化合物。这一特性使煤灰可以作为波特兰水泥的部分替代品用于混凝土生产。通过加入煤灰，混凝土的强度和耐久性可以得到改善，同时减少水泥生产相关的碳足迹。此外，煤灰增强了混凝土的可加工性，使其更易于混合和浇筑，这对建筑项目非常有利。 其次，煤灰的应用不仅限于混凝土。它可以用于各种建筑材料，包括砖块、砌块和路面。将煤灰纳入这些材料中不仅改善了它们的力学性能，还通过回收煤燃烧废物为可持续发展贡献力量。此外，煤灰还可以用于土木工程应用，如土壤稳定和轻质填料。这些多样化的应用突显了煤灰在建筑行业的多功能性。 另一个重要方面是使用煤灰的环境影响。传统上，煤灰的处置面临重大挑战，因为它通常被存放在填埋场或灰坑中，导致潜在的环境危害，如渗滤液污染和空气污染。然而，通过在建筑中重新利用煤灰，我们可以减轻这些问题并促进可持续实践。利用煤灰不仅减少了对自然资源的需求，还最小化了建筑活动的环境足迹。 尽管有许多好处，但使用煤灰也存在一些挑战。来自不同来源的煤灰的化学成分的变化可能会影响其在混凝土中的性能。因此，工程师和建筑专业人员必须进行彻底的测试和质量控制，以确保所用煤灰符合特定应用的要求标准。 总之，煤灰是建筑行业中一种有价值的材料，提供了众多优势，包括增强的混凝土性能、可持续性利益和减少的环境影响。随着我们继续寻求创新解决方案来应对废物管理和资源保护的挑战，煤灰的作用无疑会变得更加突出。通过接受煤灰的使用，我们可以为更可持续的未来做出贡献，同时改善我们建筑环境的质量。