Details:

Creators:
Rajagopal, Arudi
Corporate Creators:
Infrastructure Management and Engineering Inc.
Subject/TRT Terms:
[+]
Break And Seat Comminution Crack And Seat Treatment Cracking Of Asphalt Concrete Pavements Fractured Slab Technique Fracture Mechanics Ground Penetrating Radar Pavement Breaker Pavement Cracking Pavement Maintenance Pavement Performance Radar Reflection Cracking Rubblization
Publication/ Report Number:
FHWA/OH-2010/15
Resource Type:
Booklet/Pamphlet
Geographical Coverage:
Ohio
Edition:
Executive summary report.
Corporate Publisher:
Ohio. Dept. of Transportation. Innovation, Research, and Implementation Section
Abstract:
Rubblization and Roll (R/R) is an activity routinely practiced by the state DOTs for the rehabilitation of in-service composite pavements. The AC layer is milled and the exposed concrete pavement is broken (rubblized) into small fragments using heavy duty pavement breakers. Specifications dictate the size of resulting fragments be well within the prescribed limits. For example, ODOT specification requires the existing concrete pavement is reduced into particles ranging from sand sized to pieces not exceeding 6” in their largest dimension. Certain DOTs allow larger fragments, up to 12”. Compliance with the size specification reportedly has many advantages including the ability to eliminate reflection cracking, provide a superior flexible base layer resulting in economic construction, improve overall pavement performance and reduce life cycle costs. On the other hand, noncompliance with the size specification results in reflection cracks causing premature failure of the pavement and waste of tax dollars. Hence a thorough QC/QA process is critical to the success completion of a rubblization project. In Ohio, quality assurance requirements are met by visually observing the size of particles in a test pit to be made at the beginning of the process. Making test pits has its own pros and cons. They expose the fragments underneath and provide a true picture of the extent to which the concrete pavement has been rubblized. However, the process is time consuming, expensive, and limited. In addition, they pose smoothness issues after the restoration. Ground Penetrating Radar is an electromagnetic device that is used to nondestructively map subsurface information. Electromagnetic waves travel at a specific velocity determined primarily by the dielectric constant of the material. The relationship between the velocity of the wave and material properties is the fundamental basis for using GPR to investigate the subsurface. This study investigated if Ground Penetrating Radar can offer a suitable technology for mapping the physical condition of fractured slab rapidly, particularly under the steel reinforcement, without disturbing the fractured layer.
Format:
PDF
Funding:
134431
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:30a9a1b3fe32a555f41674d97a7cca05612065c0b785f2a29edf2d6e01a846fd
Download URL:
https://rosap.ntl.bts.gov/view/dot/23486/dot_23486_DS1.pdf
File Type:

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