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Related Concept Videos

Masonry Paving01:21

Masonry Paving

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The construction of masonry paving involves using materials such as bricks, stones, and concrete masonry units. These materials are chosen for their shape, color, strength, and resistance to abrasion and weathering. Masonry units can be installed dry on a thin layer of sand and a gravel base, or they can be embedded in mortar or asphalt on a concrete slab. For areas subjected to heavy vehicular loads, a rigid base layer of reinforced or unreinforced concrete is recommended. In contrast,...
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Design Example: Joints in Concrete Pavements01:28

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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.
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Vibrating Concrete01:19

Vibrating Concrete

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Mechanical vibrators are instrumental in compacting newly poured concrete within formwork and around reinforcements. This process is essential to eliminate trapped air pockets and establish a dense concrete mass. One widely used method is vibrating by internal vibrators, often referred to as a poker vibrator or immersion vibrator. It is rapidly inserted through the full depth of the freshly laid concrete and slightly extends into the layer below it (which remains in a plastic state). Consistent...
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P-N junction01:11

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A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...
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Updated: Feb 22, 2026

Advanced Self-Healing Asphalt Reinforced by Graphene Structures: An Atomistic Insight
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ePave: A Self-Powered Wireless Sensor for Smart and Autonomous Pavement.

Jian Xiao1, Xiang Zou2, Wenyao Xu3

  • 1Road Traffic Intelligent Detection and Equipment Engineering Technology Research Centre, Chang'an University, Xi'an 710064, China. xiaojian@chd.edu.cn.

Sensors (Basel, Switzerland)
|September 29, 2017
PubMed
Summary
This summary is machine-generated.

This study introduces ePave, a self-powered wireless sensor for smart pavements. It enables autonomous road monitoring without battery replacements, enhancing infrastructure maintenance.

Keywords:
adaptive workingpavement energy harvestingpiezoelectric effectwireless sensor

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Area of Science:

  • Transportation Engineering
  • Infrastructure Monitoring
  • Wireless Sensor Networks

Background:

  • Existing road monitoring systems face limitations due to battery life and maintenance requirements.
  • Smart pavements offer advanced on-road applications but require sustainable power solutions.
  • The need for autonomous and self-powered infrastructure monitoring is growing.

Purpose of the Study:

  • To develop an end-to-end self-powered wireless sensor system, named ePave, for smart and autonomous pavements.
  • To address the maintenance challenges associated with battery-dependent sensor systems in road infrastructure.
  • To optimize energy harvesting and power management for continuous operation.

Main Methods:

  • Empirical characterization of a piezoelectric module to maximize energy-harvesting efficiency.
  • Development of an integrated ultra-low-power sensor system coupled with an optimized energy harvester.
  • Implementation of an adaptive power management module for energy budgeting and consumption control.
  • Real-world evaluation of the ePave system to assess performance and operational trade-offs.

Main Results:

  • Optimized piezoelectric module demonstrated enhanced energy-harvesting capabilities.
  • The integrated ePave system successfully operated wirelessly and autonomously.
  • Adaptive power management effectively balanced energy consumption with harvested power.
  • Real-world testing validated the system's performance in practical road monitoring scenarios.

Conclusions:

  • The ePave system offers a viable self-powered solution for smart pavement applications.
  • Autonomous road monitoring is achievable, reducing maintenance needs and operational costs.
  • This technology paves the way for more sustainable and intelligent transportation infrastructure.