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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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Adaptations that Reduce Water Loss01:57

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Design Example: Design of an Irrigation Channel01:27

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Trapezoidal channels are widely used in irrigation systems due to their cost-effectiveness and efficiency in conveying water. Trapezoidal channels feature a flat bottom and sloping sides, making them stable and easier to construct compared to other shapes. The bottom width and side slope ratio are determined based on the required flow capacity and site conditions. The side slope is kept gentle for unlined channels to prevent soil erosion.Hydraulic parameters in channel design include the flow...
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Concreting at elevated temperatures accelerates the hydration process, leading to quicker setting but potentially reducing the long-term strength of the concrete structure. Additionally, low air humidity fosters rapid moisture loss from the concrete, resulting in reduced workability, pronounced plastic shrinkage, and a higher likelihood of crazing.
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Related Experiment Video

Updated: Aug 14, 2025

A High Performance Impedance-based Platform for Evaporation Rate Detection
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Advanced Material Design and Engineering for Water-Based Evaporative Cooling.

Renyuan Li1, Wenbin Wang1, Yifeng Shi1

  • 1Water Desalination and Reuse Center, Division of Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia.

Advanced Materials (Deerfield Beach, Fla.)
|January 13, 2023
PubMed
Summary

Water-based evaporative cooling offers sustainable, low-cost cooling solutions. This review details material advancements in direct, cyclic sorption-driven, and atmospheric water harvesting methods for enhanced performance.

Keywords:
atmospheric water harvestingevaporative coolingmoisture capturesorption‐driven evaporative coolingwater vapor sorbents

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Area of Science:

  • Materials Science
  • Sustainable Energy
  • Thermodynamics

Background:

  • Rising global cooling demand necessitates sustainable and low-cost alternatives.
  • Water-based evaporative cooling presents a promising solution.
  • Recent advancements highlight the importance of material design and engineering.

Purpose of the Study:

  • To provide a comprehensive review of state-of-the-art material design in water-based evaporative cooling.
  • To elucidate the mechanisms and components of key evaporative cooling processes.
  • To identify material requirements for optimizing cooling performance.

Main Methods:

  • Review of recent literature on material design and engineering for evaporative cooling.
  • Analysis of fundamental mechanisms in direct evaporative cooling, cyclic sorption-driven liquid water evaporative cooling (CSD-LWEC), and atmospheric water harvesting-based evaporative cooling (AWH-EC).
  • Synthesis of information on sorbent material requirements for CSD-LWEC and AWH-EC.

Main Results:

  • Overview of three water-based evaporative cooling techniques.
  • Highlighting specific material requirements for sorbents in CSD-LWEC and AWH-EC.
  • Identification of advanced material designs contributing to improved cooling performance.

Conclusions:

  • Material design and engineering are critical for advancing water-based evaporative cooling.
  • Further research is needed to overcome challenges and enhance cooling performance.
  • Future outlooks focus on innovative material solutions for sustainable cooling.