Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Jet Grouting Field Trial in Manhattan Soil Deposits, New York
This paper presents the experimental results of a jet grouting field trial for forming grout columns in stratified soil deposits. A double fluid jet grouting system was adopted with or without the introduction of compressed air. Continuous test columns were installed up to 28 m deep from the ground surface through fill, organics, silty sand and varved silt strata. The dimensions of the continuous test columns were determined using the Electric Cylinder Method (CYLJET) which involves electric resistivity measurements and application of computer simulation techniques to match the field resistivity contour patterns. An alternative estimate of the test column size was made using the observed grout volume consumed during jetting. Correlations between achieved column diameters and jetting energies suggest that much lower energy is required to cut the fill and silty sand layers in comparison to that required for organics and varved silt deposits. Column dimensions within the silty sand strata were found to be highly variable and were likely to be the result of variations in fines content. Interlocking columns were successfully installed within the varved silts to form 1.8 m thick grout slabs, using 2.1 m diameter columns at a triangular grid spacing of 1.6 m center to center.
Jet Grouting Field Trial in Manhattan Soil Deposits, New York
This paper presents the experimental results of a jet grouting field trial for forming grout columns in stratified soil deposits. A double fluid jet grouting system was adopted with or without the introduction of compressed air. Continuous test columns were installed up to 28 m deep from the ground surface through fill, organics, silty sand and varved silt strata. The dimensions of the continuous test columns were determined using the Electric Cylinder Method (CYLJET) which involves electric resistivity measurements and application of computer simulation techniques to match the field resistivity contour patterns. An alternative estimate of the test column size was made using the observed grout volume consumed during jetting. Correlations between achieved column diameters and jetting energies suggest that much lower energy is required to cut the fill and silty sand layers in comparison to that required for organics and varved silt deposits. Column dimensions within the silty sand strata were found to be highly variable and were likely to be the result of variations in fines content. Interlocking columns were successfully installed within the varved silts to form 1.8 m thick grout slabs, using 2.1 m diameter columns at a triangular grid spacing of 1.6 m center to center.
Jet Grouting Field Trial in Manhattan Soil Deposits, New York
Ho, Chu. E. (Autor:in)
Proceedings of the Fourth International Conference on Grouting and Deep Mixing ; 2012 ; New Orleans, Louisiana, United States
Grouting and Deep Mixing 2012 ; 2122-2131
17.08.2012
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Grouting , Highways and roads , Soil tests , Chemical grouting , Anchors , Cement , Jet grouting , Cutoffs , Piles , Mixing , New York City , New York , Foundations , Hydraulic structures , Field tests
Jet Grouting Field Trial in Manhattan Soil Deposits, New York
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