Sustainable Use of Concrete Grinding Residue as a Stabilizer for Roadway Shoulder Materials

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Date
2023-06-13
Authors
Jibon, Md
Mahedi, Masrur
Yang, Bo
Cetin, Bora
Bollinger, Patrick E. B.
Perez, Michael A.
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American Society of Civil Engineers
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Ceylan, Halil
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Civil, Construction and Environmental Engineering

The Department of Civil, Construction, and Environmental Engineering seeks to apply knowledge of the laws, forces, and materials of nature to the construction, planning, design, and maintenance of public and private facilities. The Civil Engineering option focuses on transportation systems, bridges, roads, water systems and dams, pollution control, etc. The Construction Engineering option focuses on construction project engineering, design, management, etc.

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The Department of Civil Engineering was founded in 1889. In 1987 it changed its name to the Department of Civil and Construction Engineering. In 2003 it changed its name to the Department of Civil, Construction and Environmental Engineering.

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1889-present

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  • Department of Civil Engineering (1889-1987)
  • Department of Civil and Construction Engineering (1987-2003)
  • Department of Civil, Construction and Environmental Engineering (2003–present)

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Abstract
Concrete grinding residue (CGR) is a byproduct of the diamond grinding processes commonly used to rehabilitate concrete pavements. This study investigated the potential for reusing CGR to stabilize roadside shoulder soil through comprehensive CGR field implementation trials in Washington County, Iowa. Two methods of CGR application were evaluated: (1) mixing CGR with the shoulder soil and (2) placing CGR on top of the shoulder soil. The optimum CGR content was determined by performing an unconfined compressive strength test on CGR mixed soil specimens following a seven-day curing period. Since the highest unconfined compressive strength was achieved by mixing 20% CGR by weight, this mixture was selected as the CGR application rate during field applications. Dynamic cone penetrometer and lightweight deflectometer tests have been conducted for two years to determine the California Bearing Ratio and composite elastic modulus of shoulder soils. While the UCS value of CGR-treated soil was improved by 50%, no significant strength improvement of the treated shoulder soil was found at the field demonstration site, although the CGR reclaimed section exhibited a modest increase in strength. The blending of CGR into the shoulder material was found to be the most efficient stabilization method for field application.
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This is a manuscript of a proceeding published as Jibon, Md, Masrur Mahedi, Bo Yang, Halil Ceylan, Bora Cetin, Patrick EB Bollinger, and Michael A. Perez. "Sustainable Use of Concrete Grinding Residue as a Stabilizer for Roadway Shoulder Materials." In Airfield and Highway Pavements 2023, pp. 103-113. https://ascelibrary.org/doi/abs/10.1061/9780784484906.010. Posted with Permission.
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