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相关概念视频

Compacting Factor test01:22

Compacting Factor test

119
The compacting factor test is a method used to assess the workability of concrete. It is  especially suitable for concrete mixes containing aggregates up to one and a half inches in size. This test involves specialized equipment consisting of two truncated cone-shaped hoppers and a cylinder, all with polished interior surfaces to minimize friction.
The procedure begins by placing concrete into the upper hopper without any compaction. Once filled, the bottom door of this hopper is opened,...
119
Design Example: Managing Concrete Workability01:14

Design Example: Managing Concrete Workability

74
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.
74
Aggregate Cement Ratio01:21

Aggregate Cement Ratio

218
The Aggregate Cement ratio refers to the weight of aggregate divided by the weight of cement in a concrete mix. Altering this ratio has profound effects on the concrete's properties. This ratio plays a pivotal role in determining the strength, workability, and durability of concrete. When the Aggregate Cement ratio is higher, the mix is leaner, meaning it has less cement paste to lubricate the aggregate, potentially making the concrete less workable. Such mixes, known as lean, enhance the...
218
Design Example: Sustainability in Concrete Building01:26

Design Example: Sustainability in Concrete Building

160
As the construction industry moves towards more eco-friendly practices, concrete's adaptability and its ability to incorporate sustainable features make it a key material in the drive towards greener building solutions.
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
160
Workability of Concrete01:25

Workability of Concrete

96
The workability of concrete is a crucial property that affects its handling, placing, and finishing during construction. It describes the ease with which concrete can be mixed, placed, compacted, and finished. Workability is primarily concerned with the concrete's movement and its ability to resist internal friction and external resistance from molds and reinforcements during the application process.
Concrete's workability is determined by its resistance to internal forces that arise...
96
Design Example: Alignment of a Road Line Using GIS01:17

Design Example: Alignment of a Road Line Using GIS

42
The alignment of a road line using Geographic Information Systems (GIS) is a critical process in civil engineering, combining advanced technology with practical decision-making. This methodology begins with the collection of geospatial data, including information on land cover, geomorphology, drainage patterns, slope, and contour details. Such data is typically acquired through satellite imagery and GIS tools, offering a comprehensive understanding of the terrain.Once the data is gathered, it...
42

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相关实验视频

Updated: Jun 7, 2025

Evaluation of an Exclusive Spur Dike U-Turn Design with Radar-Collected Data and Simulation
11:41

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Published on: February 1, 2020

20.3K

开发一款用于公路建设的建筑废物管理绩效计算器.

Zhizhe Zheng1, Yikun Su2, Xing Wang1

  • 1School of Civil Engineering and Transportation, Northeast Forestry University, 26 He Xing Road, Harbin, 150040, China.

Scientific reports
|November 12, 2024
PubMed
概括

本研究引入了一种新的计算器,用于高速公路项目的建筑废物管理 (CWM) 性能. 它将CWM整合到获得价值管理 (EVM) 中,以更好地监控和可持续发展.

关键词:
建筑垃圾管理 建筑垃圾管理获得的价值管理.高速公路建设工程性能计算器 性能计算器现场废物管理计划 (SWMP)

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Evaluating the Effect of Roadside Parking on a Dual-Direction Urban Street
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相关实验视频

Last Updated: Jun 7, 2025

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科学领域:

  • 环境工程 环境工程
  • 建设管理建设管理.
  • 可持续发展 可持续发展 可持续发展

背景情况:

  • 建筑垃圾 (CW) 生产是绿色高速公路建设的一个主要障碍.
  • 目前的建筑实践缺乏综合建筑废物管理 (CWM) 战略.

研究的目的:

  • 开发一个计算来评估高速公路建设中的CWM性能.
  • 将CWM集成到获得价值管理 (EVM) 中,以实现统一的项目监督.

主要方法:

  • 开发了基于现场废物管理计划 (SWMP) 的建筑废物管理执行评估方法 (CWMPAM).
  • 将CWM扩展到EVM,以同时管理成本,时间表和CWM性能.
  • 通过试点测试和场景分析验证了CWMPAM和CWM嵌入式EVM.

主要成果:

  • 将研究结果计算机化为用于CWM应用的实用计算器.
  • 使用随机案例测试验证了计算器的有效性.
  • 在评估和监控CWM执行方面,CWMPAM和CWM嵌入式EVM表现令人满意.

结论:

  • 开发的计算器简化了CWM应用程序,并使高速公路建设领域的性能比较成为可能.
  • 这种整合促进了高速公路项目的绿色转型,并促进了可持续建筑.
  • 该研究提供了CWM和建筑管理的突破性方法.