autogenous shrinkage

简明释义

自生收缩量

英英释义

例句

1.Understanding autogenous shrinkage (自生收缩) is crucial for predicting long-term behavior of concrete structures.

理解自生收缩对预测混凝土结构的长期行为至关重要。

2.The project manager emphasized the importance of controlling autogenous shrinkage (自生收缩) to prevent cracking.

项目经理强调控制自生收缩的重要性，以防止开裂。

3.Researchers are studying the effects of additives on autogenous shrinkage (自生收缩) in high-performance concrete.

研究人员正在研究添加剂对高性能混凝土中自生收缩的影响。

4.The concrete mix was designed to minimize autogenous shrinkage (自生收缩) during the curing process.

这个混凝土配比旨在最小化在养护过程中发生的自生收缩。

5.A significant reduction in autogenous shrinkage (自生收缩) was observed with the use of specific curing methods.

使用特定养护方法时观察到自生收缩有显著减少。

作文

In the field of concrete technology, understanding the behavior of materials is crucial for ensuring the longevity and durability of structures. One important phenomenon that engineers and researchers must consider is autogenous shrinkage. This term refers to the shrinkage that occurs in concrete as it cures, without the influence of external moisture loss. Unlike drying shrinkage, which is affected by environmental conditions, autogenous shrinkage is primarily a result of the chemical processes involved in hydration and the internal moisture content of the concrete itself.When water is added to cement, a series of chemical reactions take place, leading to the formation of hydration products that give concrete its strength. During this process, the volume of the material can change due to various factors, including temperature fluctuations and the rate of hydration. Autogenous shrinkage typically occurs in high-performance concrete mixes, where low water-to-cement ratios are used to achieve desired strength and durability. In such cases, the available water for hydration is limited, causing the concrete to shrink as it hardens.The implications of autogenous shrinkage are significant for construction practices. If not properly managed, this type of shrinkage can lead to cracking, which compromises the integrity of the structure. Engineers must carefully design concrete mixtures and consider factors such as aggregate type, admixtures, and curing methods to mitigate the effects of autogenous shrinkage. For instance, incorporating certain types of supplementary cementitious materials can help reduce shrinkage by improving the overall hydration process.Moreover, understanding autogenous shrinkage is essential for predicting the long-term behavior of concrete structures. It is particularly relevant in the context of large-scale constructions, such as dams and bridges, where significant volume changes can occur. Researchers have developed various models to quantify autogenous shrinkage and predict its impact on structural performance over time. These models help engineers make informed decisions about material selection and construction techniques, ultimately leading to more resilient structures.In conclusion, autogenous shrinkage is a critical factor in concrete technology that requires careful consideration during the design and construction phases. Its effects on concrete performance cannot be overlooked, especially in high-performance applications. By understanding the mechanisms behind autogenous shrinkage and implementing effective strategies to manage it, engineers can enhance the durability and lifespan of concrete structures, ensuring they withstand the test of time and environmental challenges.

在混凝土技术领域，理解材料的行为对于确保结构的耐久性和持久性至关重要。工程师和研究人员必须考虑的一个重要现象是自生收缩。这个术语指的是混凝土在固化过程中发生的收缩，而不受外部水分流失的影响。与干燥收缩不同，后者受环境条件的影响，自生收缩主要是水化过程中化学反应的结果，以及混凝土内部的水分含量。当水被添加到水泥中时，一系列化学反应发生，导致水化产物的形成，从而赋予混凝土强度。在此过程中，由于温度波动和水化速率等各种因素，材料的体积可能会发生变化。自生收缩通常发生在高性能混凝土配合比中，在这些配合比中，使用低水胶比以达到所需的强度和耐久性。在这种情况下，可用于水化的水分有限，导致混凝土在硬化时收缩。自生收缩的影响对建筑实践具有重要意义。如果不加以妥善管理，这种类型的收缩可能导致开裂，从而损害结构的完整性。工程师必须仔细设计混凝土配合比，并考虑骨料类型、外加剂和养护方法等因素，以减轻自生收缩的影响。例如，加入某些类型的补充水泥材料可以通过改善整体水化过程来帮助减少收缩。此外，理解自生收缩对于预测混凝土结构的长期行为至关重要。这在大型建设项目（如大坝和桥梁）中尤为相关，因为在这些项目中可能会发生显著的体积变化。研究人员已经开发出各种模型来量化自生收缩并预测其对结构性能的影响。这些模型帮助工程师就材料选择和施工技术做出明智的决策，最终导致更具韧性的结构。总之，自生收缩是混凝土技术中一个关键因素，在设计和施工阶段需要认真考虑。它对混凝土性能的影响不可忽视，特别是在高性能应用中。通过理解自生收缩背后的机制并实施有效的管理策略，工程师可以增强混凝土结构的耐久性和使用寿命，确保它们经受住时间和环境挑战的考验。