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相关概念视频

Abrasion Resistance of Concrete01:23

Abrasion Resistance of Concrete

503
Abrasion resistance is an essential characteristic of concrete that determines its durability and longevity under various wear conditions. Concrete surfaces are vulnerable to different types of abrasion. For instance, surfaces may wear down due to the constant movement of vehicles or be eroded by solids carried in water, as seen in concrete canal linings. Specific tests are conducted to measure the abrasion resistance of concrete.
One such test is the revolving disc test, where three plates...
503
Toughness and Hardness of Aggregate01:22

Toughness and Hardness of Aggregate

574
Toughness and hardness are critical properties of aggregate materials used in concrete, particularly on pavement surfaces and industrial flooring subjected to heavy loads. Toughness is defined as the aggregate's resistance to failure by impact and is measured by the aggregate impact value (AIV). For this, the aggregate impact value test is performed, wherein the impact is delivered by a standard hammer, which falls freely under its own weight onto the aggregates. The aggregates fragment in...
574
Design Example: Joints in Concrete Pavements01:28

Design Example: Joints in Concrete Pavements

469
Concrete pavement joints are essential for maintaining the structural integrity and longevity of pavement by controlling where and how the pavement cracks. These joints can be categorized based on their functions, such as contraction or control joints, construction joints, isolation joints, and expansion joints.
Contraction joints are typically formed by sawing a groove into the concrete shortly after it has hardened. This creates a weakened vertical plane, deliberately encouraging cracking at...
469

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相关实验视频

Updated: Jan 13, 2026

Determination of the Friction Coefficients of Icy Pavements Under Different Amounts of Snowfall
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一种新的路面磨损测试,用于评估易受伤害的道路使用者的受伤风险.

David Llopis-Castelló1, Carlos Alonso-Troyano1, Pablo Álvarez-Troncoso2

  • 1Highway Engineering Research Group, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain.

Sensors (Basel, Switzerland)
|October 29, 2025
PubMed
概括

一项新的路面磨损测试通过模拟落条件来评估道路使用者的受伤风险. 这种以用户为中心的方法使用样来测量表面的攻击性,增强基础设施安全审计.

关键词:
伤害风险评估伤害风险评估微型移动的安全性非破坏性测试是指非破坏性测试.路面铺路铺路铺路铺路铺表面磨损的表面磨损情况表面表征表征的表征表征.

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A Test Bed to Examine Helmet Fit and Retention and Biomechanical Measures of Head and Neck Injury in Simulated Impact
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Experimental Protocol to Investigate Particle Aerosolization of a Product Under Abrasion and Under Environmental Weathering
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相关实验视频

Last Updated: Jan 13, 2026

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12:21

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A Test Bed to Examine Helmet Fit and Retention and Biomechanical Measures of Head and Neck Injury in Simulated Impact
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科学领域:

  • 道路安全工程工程 道路安全工程
  • 材料科学是一种材料科学.
  • 生物力学 生物力学

背景情况:

  • 传统的路面评估侧重于抗滑性和质感,而忽视了落时的机械攻击性.
  • 现有的方法无法充分评估易受伤害的道路使用者 (如微型出行者) 的伤害潜力.
  • 在量化撞击事件期间与人类皮肤相关的路面表面磨损度方面存在差距.

研究的目的:

  • 引入一种新的,以用户为中心的表面磨损测试,用于评估路面损伤潜力.
  • 开发一种可重复的方法来量化与皮肤磨损相关的路面表面攻击性.
  • 为基础设施安全审计提供一个新的指标,重点关注弱势道路使用者的伤害减轻.

主要方法:

  • 帕拉芬样本,皮肤的磨损反应的代理,被拖过路面表面在控制的速度和负载.
  • 从样本的物质损失被量化,以表明路面表面的磨损性.
  • 该测试在陶,和混凝土表面上得到了验证,并应用于微型移动自行车道的案例研究中.

主要成果:

  • 新的磨损测试显示了不同类型路面的灵敏度和可重复性.
  • 与基于点的测试相比,持续评估能力提供了更具代表性的结果.
  • 该测试有效地响应了随着时间的推移在现实世界应用中的表面变化.

结论:

  • 开发的表面磨损测试是实用的,可重复的,适用于各种类型的路面.
  • 该方法为基础设施安全提供了有价值的新指标,特别是对弱势道路使用者.
  • 该测试可以扩展,以评估摩托车手和其他易受磨损伤害的道路使用者的受伤风险.