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A platform for research: civil engineering, architecture and urbanism
Pressure Relief Joint for Preventing Concrete Pavement Blowup
https://orcid.org/https://orcid.org/0000-0002-5405-4667
https://orcid.org/https://orcid.org/0000-0002-2778-9043
https://orcid.org/https://orcid.org/0000-0003-2869-4166
https://orcid.org/https://orcid.org/0000-0003-0452-2773
https://orcid.org/https://orcid.org/0000-0001-7022-485X
Blowup refers to concrete pavement distress resulting from compressive failure at joints or cracks when excessive concrete expansion occurs, compressive forces are generated, and the horizontal movement of the pavement is constrained. Blowup occurs because of many reasons including heatwaves caused by abnormal climatic conditions, improper installation spacing between expansion joints, pavement expansion due to an alkali-aggregate reaction, concrete pavement aging, and contraction joint failure. In the summer of 2018, the Korean peninsula experienced the worst heatwave ever recorded, and hence, the possibility of blowup increased. Consequently, the Korea Expressway Corporation established a draft policy for installing pressure relief joints (PRJs) to prevent blowup. In this draft, three installation classes were specified for installing PRJs on in-service roads, and the installation priority for each class was set such that the limited budget could be used efficiently. In addition, the draft presented specific guidelines for installing each class of PRJs and suggested PRJ cross sections that could ensure structural stability. However, the draft lacks systematic research on the causes of blowup and the development of countermeasures and does not provide an engineering basis for the suggested technological solutions to prevent blowup. Therefore, this study aimed to reexamine and complement the suitability of the existing PRJ installation standards through field studies, laboratory experiments, and analytical techniques.
Pressure Relief Joint for Preventing Concrete Pavement Blowup
https://orcid.org/https://orcid.org/0000-0002-5405-4667
https://orcid.org/https://orcid.org/0000-0002-2778-9043
https://orcid.org/https://orcid.org/0000-0003-2869-4166
https://orcid.org/https://orcid.org/0000-0003-0452-2773
https://orcid.org/https://orcid.org/0000-0001-7022-485X
Blowup refers to concrete pavement distress resulting from compressive failure at joints or cracks when excessive concrete expansion occurs, compressive forces are generated, and the horizontal movement of the pavement is constrained. Blowup occurs because of many reasons including heatwaves caused by abnormal climatic conditions, improper installation spacing between expansion joints, pavement expansion due to an alkali-aggregate reaction, concrete pavement aging, and contraction joint failure. In the summer of 2018, the Korean peninsula experienced the worst heatwave ever recorded, and hence, the possibility of blowup increased. Consequently, the Korea Expressway Corporation established a draft policy for installing pressure relief joints (PRJs) to prevent blowup. In this draft, three installation classes were specified for installing PRJs on in-service roads, and the installation priority for each class was set such that the limited budget could be used efficiently. In addition, the draft presented specific guidelines for installing each class of PRJs and suggested PRJ cross sections that could ensure structural stability. However, the draft lacks systematic research on the causes of blowup and the development of countermeasures and does not provide an engineering basis for the suggested technological solutions to prevent blowup. Therefore, this study aimed to reexamine and complement the suitability of the existing PRJ installation standards through field studies, laboratory experiments, and analytical techniques.
Pressure Relief Joint for Preventing Concrete Pavement Blowup
https://orcid.org/https://orcid.org/0000-0002-5405-4667
https://orcid.org/https://orcid.org/0000-0002-2778-9043
https://orcid.org/https://orcid.org/0000-0003-2869-4166
https://orcid.org/https://orcid.org/0000-0003-0452-2773
https://orcid.org/https://orcid.org/0000-0001-7022-485X
Blowup refers to concrete pavement distress resulting from compressive failure at joints or cracks when excessive concrete expansion occurs, compressive forces are generated, and the horizontal movement of the pavement is constrained. Blowup occurs because of many reasons including heatwaves caused by abnormal climatic conditions, improper installation spacing between expansion joints, pavement expansion due to an alkali-aggregate reaction, concrete pavement aging, and contraction joint failure. In the summer of 2018, the Korean peninsula experienced the worst heatwave ever recorded, and hence, the possibility of blowup increased. Consequently, the Korea Expressway Corporation established a draft policy for installing pressure relief joints (PRJs) to prevent blowup. In this draft, three installation classes were specified for installing PRJs on in-service roads, and the installation priority for each class was set such that the limited budget could be used efficiently. In addition, the draft presented specific guidelines for installing each class of PRJs and suggested PRJ cross sections that could ensure structural stability. However, the draft lacks systematic research on the causes of blowup and the development of countermeasures and does not provide an engineering basis for the suggested technological solutions to prevent blowup. Therefore, this study aimed to reexamine and complement the suitability of the existing PRJ installation standards through field studies, laboratory experiments, and analytical techniques.
Pressure Relief Joint for Preventing Concrete Pavement Blowup
KSCE J Civ Eng
Park, JeJin (author) / Ryu, SungWoo (author) / Lee, JaeHoon (author) / Son, DeukSoo (author) / Bae, SungHo (author) / Jung, WonKyong (author)
KSCE Journal of Civil Engineering ; 26 ; 1123-1131
2022-03-01
9 pages
Article (Journal)
Electronic Resource
English
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