alkali-lime index

简明释义

碱钙指数;

英英释义

例句

1.Understanding the alkali-lime index helps in predicting the behavior of concrete in various environments.

了解碱-石灰指数有助于预测混凝土在各种环境中的表现。

2.The alkali-lime index is essential for evaluating the risk of cracking in pavement materials.

对于评估路面材料开裂风险，碱-石灰指数至关重要。

3.The engineer calculated the alkali-lime index to determine the suitability of the soil for construction.

工程师计算了碱-石灰指数以确定土壤在建筑中的适用性。

4.During the soil testing phase, the alkali-lime index was one of the critical factors assessed.

在土壤测试阶段，碱-石灰指数是评估的关键因素之一。

5.A high alkali-lime index indicates a greater potential for expansive soil issues.

高碱-石灰指数表明土壤存在膨胀问题的潜力更大。

作文

The construction industry is constantly evolving, with new materials and methods being developed to enhance the durability and sustainability of structures. One such concept that has gained attention in recent years is the alkali-lime index, a measure that plays a crucial role in determining the potential reactivity of aggregates used in concrete. Understanding this index is essential for engineers and architects who aim to create long-lasting buildings that can withstand various environmental conditions.The alkali-lime index is primarily concerned with the interaction between alkalis present in cement and certain types of reactive silica found in aggregates. When these two components react, they can lead to a phenomenon known as alkali-silica reaction (ASR), which can cause significant expansion and cracking in concrete over time. This reaction is particularly detrimental because it often manifests years after the initial construction, leading to costly repairs and safety concerns.To effectively utilize the alkali-lime index, it is important to conduct thorough testing on the aggregates used in concrete mixtures. The index is determined by assessing the amount of reactive silica in the aggregates and the level of alkalis in the cement. A higher alkali-lime index indicates a greater risk of ASR, prompting engineers to either choose less reactive aggregates or incorporate pozzolanic materials that can mitigate the reaction.In recent years, there has been a growing emphasis on sustainable construction practices. By understanding the alkali-lime index, professionals in the field can make informed decisions that not only enhance the longevity of their projects but also reduce waste and resource consumption. For instance, using recycled aggregates with low reactivity can significantly lower the overall alkali content in concrete, thus minimizing the risk of ASR.Moreover, the alkali-lime index serves as a guideline for the development of new concrete formulations. Researchers are continually exploring innovative ways to improve the resilience of concrete against ASR. This includes the use of alternative binders and additives that can effectively counteract the effects of alkalis in cement.In conclusion, the alkali-lime index is a vital parameter in the field of civil engineering and construction. Its significance lies in its ability to predict the potential for alkali-silica reactions, thereby guiding the selection of materials and ensuring the durability of concrete structures. As the industry moves towards more sustainable practices, a comprehensive understanding of the alkali-lime index will be essential for creating resilient infrastructure that meets the demands of modern society while minimizing environmental impact. By prioritizing research and education on this topic, we can pave the way for safer and more sustainable construction practices in the future.

建筑行业不断发展，新的材料和方法不断涌现，以增强结构的耐久性和可持续性。近年来，受到关注的一个概念是碱-石灰指数，这是一个用于确定混凝土中使用的骨料潜在反应性的指标。理解这一指数对工程师和建筑师来说至关重要，他们旨在创建能够承受各种环境条件的持久建筑。碱-石灰指数主要关注水泥中存在的碱与某些类型的反应性二氧化硅之间的相互作用。当这两个成分发生反应时，会导致一种被称为碱-硅酸盐反应（ASR）的现象，这会导致混凝土随时间膨胀和开裂。这种反应特别有害，因为它通常在初始施工多年后才显现出来，导致昂贵的维修和安全隐患。为了有效利用碱-石灰指数，对混凝土配合中使用的骨料进行彻底测试是非常重要的。通过评估骨料中的反应性二氧化硅含量和水泥中的碱含量来确定该指数。较高的碱-石灰指数表明ASR的风险更大，促使工程师选择反应性较低的骨料或加入可以减轻反应的火山灰材料。近年来，越来越强调可持续建筑实践。通过理解碱-石灰指数，该领域的专业人士可以做出明智的决策，不仅增强他们项目的耐久性，还减少废物和资源消耗。例如，使用反应性低的回收骨料可以显著降低混凝土中的整体碱含量，从而最小化ASR的风险。此外，碱-石灰指数还作为新混凝土配方开发的指南。研究人员不断探索创新的方法，以提高混凝土抵御ASR的能力。这包括使用替代粘合剂和添加剂，有效对抗水泥中的碱的影响。总之，碱-石灰指数是土木工程和建筑领域的重要参数。其重要性在于其能够预测碱-硅酸盐反应的潜力，从而指导材料的选择并确保混凝土结构的耐久性。随着行业向更可持续的实践迈进，对碱-石灰指数的全面理解将对创建能够满足现代社会需求的坚固基础设施至关重要，同时最小化环境影响。通过优先考虑对这一主题的研究和教育，我们可以为未来更安全、更可持续的建筑实践铺平道路。