A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Grouting for Freezing
Ground freezing as a method to provide temporary earth support and groundwater control for deep excavations has been in use for well over one hundred years. Details on the structural and thermal properties and behavior of frozen earth as well as design methods for frozen earth structures are well documented in the literature. Dynamic groundwater conditions caused by a combination of a localized gradient and high permeability can prevent the freezing process in small, isolated zones of the frozen mass. These unfrozen zones are detrimental to completion of the excavation. Subsurface grouting is often used as a remedial technique to reduce the permeability of these zones and subsequently reducing the groundwater velocity thereby facilitating the completion of the freeze. This paper details the field procedures used to locate the zones, numeric modeling techniques to verify the effect of the groundwater velocity on the freezing process and the grouting procedures used to reduce the permeability. Methods of drilling and installing the grout pipes as well as grout mixtures against frozen ground are discussed.
Grouting for Freezing
Ground freezing as a method to provide temporary earth support and groundwater control for deep excavations has been in use for well over one hundred years. Details on the structural and thermal properties and behavior of frozen earth as well as design methods for frozen earth structures are well documented in the literature. Dynamic groundwater conditions caused by a combination of a localized gradient and high permeability can prevent the freezing process in small, isolated zones of the frozen mass. These unfrozen zones are detrimental to completion of the excavation. Subsurface grouting is often used as a remedial technique to reduce the permeability of these zones and subsequently reducing the groundwater velocity thereby facilitating the completion of the freeze. This paper details the field procedures used to locate the zones, numeric modeling techniques to verify the effect of the groundwater velocity on the freezing process and the grouting procedures used to reduce the permeability. Methods of drilling and installing the grout pipes as well as grout mixtures against frozen ground are discussed.
Grouting for Freezing
Sopko, Joseph A. (author) / Curry, Adam T. (author) / Ziegler, Gregory T. (author)
Grouting 2017 ; 2017 ; Honolulu, Hawaii
Grouting 2017 ; 116-123
2017-07-06
Conference paper
Electronic Resource
English
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