set retarding admixture

简明释义

外加缓剂

英英释义

例句

1.Using a set retarding admixture can help prevent cold joints in large pours.

使用缓凝剂可以帮助防止大浇筑中的冷接缝。

2.The set retarding admixture allowed the crew to finish their work without rushing.

这个缓凝剂使得工人能够在不匆忙的情况下完成工作。

3.For long-distance transport of concrete, a set retarding admixture is essential.

对于混凝土的长途运输，使用缓凝剂是必不可少的。

4.The contractor decided to add a set retarding admixture to ensure the concrete could be worked with for a longer period.

承包商决定添加缓凝剂以确保混凝土可以更长时间进行施工。

5.In hot weather, we often use set retarding admixture to delay the setting time of concrete.

在炎热的天气中，我们经常使用缓凝剂来延迟混凝土的凝结时间。

作文

In the field of construction and civil engineering, the use of concrete is essential due to its strength and durability. However, one of the challenges faced by engineers and builders is the setting time of concrete. This is where set retarding admixture comes into play. A set retarding admixture (延迟凝结剂) is a type of chemical additive that slows down the hydration process of cement, allowing for a longer working time before the concrete begins to set. This is particularly beneficial in hot weather conditions where concrete tends to set quickly, making it difficult for workers to finish their tasks efficiently.The primary function of a set retarding admixture is to delay the initial setting time of concrete without compromising its final strength. By incorporating this admixture into the concrete mix, contractors can ensure that they have ample time to work with the material, especially when large volumes are required or when complex forms need to be filled. The extended working time allows for better mixing, placement, and finishing, leading to improved overall quality of the concrete structure.Moreover, using a set retarding admixture can help in situations where transportation of concrete over long distances is necessary. In such cases, the concrete may begin to set before it reaches the construction site. By adding a set retarding admixture, the contractor can mitigate this issue, ensuring that the concrete remains workable upon arrival. This not only saves time but also reduces waste, as less concrete is discarded due to premature setting.Another significant advantage of using a set retarding admixture is its ability to enhance the performance of concrete in specific environmental conditions. For instance, in areas with high temperatures, the risk of thermal cracking increases as the concrete sets too quickly. By utilizing a set retarding admixture, the temperature rise within the concrete can be controlled, reducing the likelihood of cracks and improving the longevity of the structure.However, it is important to note that while set retarding admixture provides numerous benefits, it must be used judiciously. Overuse can lead to excessively long setting times, which may not be desirable in all situations. Therefore, it is crucial for engineers to carefully calculate the appropriate dosage of the admixture based on the specific requirements of the project and the environmental conditions.In conclusion, the integration of a set retarding admixture into concrete mixes offers significant advantages for construction projects, particularly in managing setting times and enhancing workability. As the construction industry continues to evolve, the use of such admixtures will likely become more prevalent, enabling builders to create structures that are not only strong and durable but also constructed efficiently and effectively. Understanding the role of set retarding admixture is essential for anyone involved in concrete construction, as it plays a pivotal role in achieving the desired results in various challenging conditions.

在建筑和土木工程领域，混凝土的使用至关重要，因为它具有强度和耐久性。然而，工程师和建筑工人面临的挑战之一是混凝土的凝结时间。这时，延迟凝结剂（set retarding admixture）就派上用场了。延迟凝结剂是一种化学添加剂，可以减缓水泥的水化过程，从而在混凝土开始凝结之前提供更长的工作时间。这在炎热天气条件下尤为有利，因为混凝土往往凝结得很快，使工人难以高效完成任务。延迟凝结剂的主要功能是延迟混凝土的初凝时间，而不影响其最终强度。通过将这种添加剂加入混凝土混合物中，承包商可以确保在需要大量混凝土或需要填充复杂形状时，有足够的时间来处理材料。延长的工作时间允许更好的混合、浇筑和抹平，从而提高混凝土结构的整体质量。此外，在需要长途运输混凝土的情况下，使用延迟凝结剂也能有所帮助。在这种情况下，混凝土可能在到达施工现场之前就开始凝结。通过添加延迟凝结剂，承包商可以减轻这一问题，确保混凝土在到达时仍然可操作。这不仅节省了时间，还减少了浪费，因为由于过早凝结而被丢弃的混凝土较少。使用延迟凝结剂的另一个显著优势是它能够增强混凝土在特定环境条件下的性能。例如，在高温地区，随着混凝土设定过快，热裂缝的风险增加。通过利用延迟凝结剂，可以控制混凝土内部的温升，从而降低裂缝的可能性，提高结构的耐久性。然而，重要的是要注意，虽然延迟凝结剂提供了许多好处，但必须谨慎使用。使用过量可能导致凝结时间过长，这在所有情况下都不一定是理想的。因此，工程师必须根据项目的具体要求和环境条件仔细计算添加剂的适当剂量。总之，将延迟凝结剂整合到混凝土混合物中为建筑项目提供了显著的优势，特别是在管理凝结时间和增强可操作性方面。随着建筑行业的不断发展，这类添加剂的使用可能会变得更加普遍，使建筑商能够创建不仅强大和耐用，而且施工高效的结构。了解延迟凝结剂的作用对于任何参与混凝土施工的人来说都是至关重要的，因为它在各种挑战性条件下实现所需结果方面发挥着关键作用。