Figure 2. Sidewalks/Recreational Trails Pavement Type and Layers.
Figure 2c. Asphalt Concrete on Aggregate Base/Subbase.
Figure 2d. Portland Cement Concrete on Aggregate Base.
Pavement Maintenance and Rehabilitation All pavements require maintenance and rehabilitation. Annual day-to-day summary and winter maintenance activities that are part of agency operations are not typically included in the lifecycle cost analysis. While the most common cause of pavement damage is usually related to vehicular loading, environmental conditions such as freezing and thawing, moisture, thermal expansion and contraction, oxidation of asphalt bounding materials, etc. also result in degradation of the pavement materials and subgrade. Common municipal rehabilitation activities related to each type of pavement are described below. Common ICP Maintenance and Rehabilitation Activities Replace Cracked or Worn Pavers: Replacing one or several pavers that have been damaged. Typical equipment needed includes personal protective equipment (PPE), a vehicle to remove debris, metal putty knife, paver extractor, wooden or metal bedding sand screed, plate compactor and a broom. Materials required include replacement paver(s), bedding/joint sand. Scrape the sand from the joints around the paver to be replaced using a metal putty knife, pry the paver upwards using a paver extractor or 2 flat head screw drivers, level the bedding sand layer and add sand (if necessary), place the replacement paver, compact using a small plate compactor, fill the joints with dry sand and compact again to seat the joint sand and sweep the excess sand from the repair area.
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