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Related Concept Videos

Design Example: Managing Concrete Workability01:14

Design Example: Managing Concrete Workability

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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.
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Methods of Documentation VI: Case Management Model01:15

Methods of Documentation VI: Case Management Model

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The case management model is a multidisciplinary approach that involves healthcare professionals from diverse disciplines, such as physicians, nurses, therapists, social workers, and pharmacists, working collaboratively to address the various needs of patients. Each healthcare professional brings unique expertise and perspectives, contributing to a more comprehensive understanding of the patient's condition and tailoring treatment plans accordingly.
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Design Example: Aggregate Gradation01:24

Design Example: Aggregate Gradation

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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.
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Workability of Concrete01:25

Workability of Concrete

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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...
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Measurement of Air Content in Concrete01:23

Measurement of Air Content in Concrete

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Air content measurement in concrete is critical for ensuring structural integrity and durability of concrete structures, especially in environments prone to severe weather conditions. Accurate air content analysis optimizes concrete's resistance to freeze-thaw cycles and enhances its workability and strength. Several methods are standardized under ASTM guidelines to measure the air content in fresh concrete, each suitable for different concrete types and conditions.
The pressure method,...
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Multiple Comparison Tests

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Multiple comparison test, abbreviated as MCT, is a post hoc analysis generally performed after comparing multiple samples with one or more tests. An MCT will help identify a significantly different sample among multiple samples or a factor among multiple factors.
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Comparative analysis of earned value management techniques in construction projects.

Mohamed Elsaid1, Khaled Nassar1, Fahad K Alqahtani2

  • 1Department of Construction Engineering, The American University in Cairo (AUC), New Cairo, Egypt.

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|July 2, 2025
PubMed
Summary

Earned Schedule and Earned Duration techniques offer varying accuracy in construction project forecasting. Earned Schedule excels early on, while Earned Duration is better for later stages, guiding project managers.

Keywords:
Construction project managementEarned duration methodEarned schedule methodEarned value managementForecasting accuracyPlanned value method

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Area of Science:

  • Construction Project Management
  • Earned Value Management (EVM)
  • Predictive Analytics in Construction

Background:

  • Earned value techniques are crucial for construction project monitoring and forecasting.
  • Limited research exists on the comparative accuracy of these techniques across project types and stages.

Purpose of the Study:

  • To evaluate the predictive accuracy of Earned Duration, Earned Schedule, and Planned Value techniques.
  • To identify the most effective forecasting method based on project progress.
  • To provide practical guidelines for selecting appropriate techniques at different project phases.

Main Methods:

  • Analysis of a diverse dataset comprising 30 construction projects.
  • Comparative evaluation of Earned Duration, Earned Schedule, and Planned Value forecasting accuracy.
  • Assessment of predictive performance at various project duration percentages.

Main Results:

  • Earned Schedule demonstrates superior accuracy in predicting project completion during early stages.
  • Earned Duration proves more reliable for accurate forecasting in the later stages of construction projects.
  • Project type and progress level significantly influence the effectiveness of forecasting methods.

Conclusions:

  • The choice of earned value technique should be tailored to the project's stage and type.
  • Implementing stage-specific forecasting methods enhances project outcome predictability.
  • This research offers practical guidance for optimizing construction project management and forecasting.