在工程特征和增强技术的进化中取得的进步,用于下层砂的增强技术
Xiaoyan Liu1, Jinpeng Zhao2, Lulu Liu3
1School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China.
Materials (Basel, Switzerland)
|November 14, 2023
概括
回收聚纤维提供了一个可持续的解决方案,以稳定沿海地区的泥分层. 这项研究回顾了当前的方法,并建议使用这些纤维进行环保和成本效益的土壤改善.
科学领域:
- 地质技术工程 地质技术工程
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
背景情况:
- 沉地底稳定带来了技术上的挑战,特别是在沿海和河流三角洲地区.
- 环境可持续性需要高效,成本效益和环保的稳定技术.
- 从废瓶中获得的回收聚纤维显示出土壤增强的潜力.
研究的目的:
- 审查现有的关于泥特性和稳定方法的文献.
- 引入和评估回收聚纤维的潜力,以改善泥亚层.
- 确定这种新方法的应用前景和挑战.
主要方法:
- 关于泥微观结构,物理化学和机械性能的综合文献综述.
- 审查目前的泥稳定方法.
- 回收聚纤维在泥土中的应用的概念化和讨论.
主要成果:
- 现有的泥稳定技术在成本,效率和环境影响方面存在局限性.
- 回收聚纤维为泥亚层增强提供了一个有希望的,可持续的替代品.
- 需要进一步的研究才能充分了解应用前景和挑战.
结论:
- 回收聚纤维提供了一个可行的,环保的解决方案,用于泥下层稳定.
- 这种方法与土木工程中的环境可持续性目标保持一致.
- 该研究为未来的工程实施和采用这项技术提供了基础.
相关概念视频
Design Example: Aggregate Gradation
98
The right type and quality of aggregates are crucial for concrete as they significantly influence its properties, mix proportions, and cost-effectiveness. If different sources are available for sand, the commonly used fine aggregate in concrete, the selection of sand is primarily based on its gradation.
The grading, or particle-size distribution, of sand is determined using sieve analysis, with standard sizes ranging from 150 μm to 10 mm (ASTM No. 100 sieve to 3⁄8 in. sieve). Sand is...
The grading, or particle-size distribution, of sand is determined using sieve analysis, with standard sizes ranging from 150 μm to 10 mm (ASTM No. 100 sieve to 3⁄8 in. sieve). Sand is...
98
Design Example: Maintaining Level of an Embankment
72
Constructing a roadway embankment over uneven terrain requires precise leveling to ensure stability and proper drainage. Surveyors use a leveling instrument and staff to calculate ground elevations and determine the required fill material at each point along the embankment alignment.The process begins by positioning a leveling instrument near a benchmark with a known elevation. A backsight reading establishes the instrument height, which serves as a reference for subsequent measurements. A...
72
Reinforcements in Concrete
94
Reinforced concrete is a composite material used extensively in construction, combining the compressive strength of concrete with the tensile strength of steel. This synergy is essential as concrete, while excellent at resisting compression, is weak under tension. Steel bars, or rebars, are embedded in the concrete to handle these tensile forces. The choice of steel is strategic; it shares a similar coefficient of thermal expansion with concrete, which ensures uniformity in response to...
94
Design Example: Managing Concrete Workability
84
This example deals with managing the workability of concrete for a raft foundation project under hot weather conditions. Workability is crucial for ensuring the concrete is easy to place, compact, and finish. In this scenario, a slump test — a common method to measure the workability of fresh concrete — initially indicated low workability. This was attributed to the rapid water loss from the concrete mix, exacerbated by the high temperatures causing the course aggregates to heat up.
84
Preplaced Aggregate Concrete
98
Preplaced aggregate concrete is ideal for construction environments that are not easily accessible. The process begins by properly wetting the gap-graded coarse aggregates to remove the dirt, then placing it in the form and compacting it. Voids are filled with a mortar mix pumped under pressure through slotted pipes. This mortar typically consists of Portland cement, pozzolan, fine aggregates, water, and a fluidizing aid. The pozzolan helps reduce bleeding and segregation while improving the...
98
Fiber Reinforced Concrete
85
Fiber-reinforced concrete significantly enhances the structural and nonstructural properties of traditional concrete by incorporating fibers like steel, glass, and polymers. These fibers, varying from natural ones such as sisal and cellulose to manufactured ones like polypropylene and Kevlar, are mixed into hydraulic cement with aggregates. Steel fibers, often preferred for their robustness, contribute to improved ductility, toughness, and post-cracking performance. The concrete is classified...
85


