air entraining admixture

简明释义

加气掺合剂

英英释义

例句

1.For better surface finish, a small amount of air entraining admixture was added to the mix.

为了获得更好的表面光洁度，在混合物中添加了一小部分引气剂。

2.Engineers often recommend an air entraining admixture for structures exposed to freeze-thaw cycles.

工程师通常建议对暴露于冻融循环的结构使用引气剂。

3.The addition of air entraining admixture improves the workability of concrete in cold weather.

添加引气剂可以改善混凝土在寒冷天气下的可施工性。

4.The air entraining admixture enhances the durability of concrete by creating tiny air bubbles.

通过产生微小的气泡，引气剂增强了混凝土的耐久性。

5.Using an air entraining admixture can help reduce the density of concrete.

使用引气剂可以帮助降低混凝土的密度。

作文

In the field of construction and civil engineering, the use of concrete is ubiquitous. However, the properties of concrete can vary significantly based on its composition and additives. One important additive that has gained attention in recent years is the air entraining admixture. This term refers to a type of chemical additive that introduces tiny air bubbles into the concrete mix, enhancing its performance and durability. The primary function of an air entraining admixture is to improve the workability of fresh concrete while also providing resistance to freeze-thaw cycles. This is particularly important in regions that experience harsh winter conditions, where water trapped in the concrete can freeze and expand, leading to cracking and other forms of damage. By incorporating an air entraining admixture, engineers can significantly reduce the risk of such damage, thereby extending the lifespan of concrete structures.The mechanism by which an air entraining admixture works is quite fascinating. When added to the concrete mixture, these admixtures create millions of microscopic air bubbles. These bubbles act as pressure relief valves during freeze-thaw cycles, allowing the concrete to expand without sustaining damage. Additionally, the presence of these air pockets improves the overall workability of the concrete, making it easier to pour and mold into various shapes. This is especially beneficial in complex construction projects where precise control over the concrete's flow is essential.Furthermore, the use of air entraining admixture can enhance the durability of concrete against various environmental factors. For instance, concrete exposed to de-icing salts can suffer from scaling and surface damage. The air bubbles created by the air entraining admixture help mitigate this issue by reducing the internal stresses caused by freeze-thaw cycles and chemical reactions with the salts. As a result, structures such as bridges, roads, and parking lots can maintain their integrity and appearance for a longer period.Despite the many advantages offered by air entraining admixture, it is essential to use them judiciously. Overuse of these additives can lead to excessive air content, which may compromise the strength of the concrete. Therefore, it is crucial for engineers and construction professionals to follow recommended guidelines and conduct thorough testing to determine the appropriate dosage for each specific application.In conclusion, the incorporation of air entraining admixture into concrete mixes represents a significant advancement in construction technology. By improving the workability and durability of concrete, these additives play a vital role in ensuring the longevity and safety of various structures. As the construction industry continues to evolve, the importance of understanding and effectively using materials like air entraining admixture cannot be overstated. With the right application, these admixtures can contribute to more resilient infrastructure and ultimately enhance the quality of our built environment.

在建筑和土木工程领域，混凝土的使用是无处不在的。然而，混凝土的性质可能会因其成分和添加剂而显著变化。近年来，一种重要的添加剂引起了人们的关注，那就是引气剂。这个术语指的是一种化学添加剂，它在混凝土混合物中引入微小的气泡，从而增强其性能和耐久性。引气剂的主要功能是改善新鲜混凝土的可加工性，同时提供对冻融循环的抵抗。这在经历严酷冬季条件的地区尤为重要，因为混凝土中被困的水分在冻结时会膨胀，导致开裂和其他形式的损坏。通过加入引气剂，工程师可以显著降低这种损坏的风险，从而延长混凝土结构的使用寿命。引气剂的工作机制非常有趣。当加入混凝土混合物时，这些添加剂会产生数百万个微观气泡。这些气泡充当冻融循环期间的压力释放阀，允许混凝土在不受损伤的情况下膨胀。此外，这些空气口袋的存在改善了混凝土的整体可加工性，使其更易于浇筑和塑造成各种形状。这在需要精确控制混凝土流动的复杂建筑项目中尤其有益。此外，使用引气剂可以增强混凝土对各种环境因素的耐久性。例如，暴露于融雪盐的混凝土可能会遭受剥落和表面损坏。引气剂所创造的气泡通过减少冻融循环和与盐的化学反应所造成的内部应力来帮助缓解这个问题。因此，桥梁、道路和停车场等结构可以在更长的时间内保持其完整性和外观。尽管引气剂提供了许多优点，但必须谨慎使用这些添加剂。过量使用可能导致过高的气体含量，从而影响混凝土的强度。因此，工程师和建筑专业人士必须遵循推荐的指南，并进行彻底的测试，以确定每种特定应用的适当剂量。总之，将引气剂纳入混凝土混合物代表了建筑技术的重大进步。通过改善混凝土的可加工性和耐久性，这些添加剂在确保各种结构的长期安全性和耐用性方面发挥着至关重要的作用。随着建筑行业的不断发展，理解和有效使用像引气剂这样的材料的重要性不容低估。通过正确的应用，这些添加剂可以促进更具韧性的基础设施，并最终提升我们建成环境的质量。