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Grouting Silt and Sand at Low Temperatures, A Laboratory Investigation
This report presents data from an experimental program undertaken to develop information on proposed and existing chemical grout solutions to provide engineering properties in connection with grouting of soils in ambient temperatures of 39 + or - 1F (3.88C) and below. Twelve grout solutions were investigated, including organic chemicals, sodium silicates, cements, and clay (bentonite). Set or gel tests were performed on each chemical solution, in the center of which a thermocouple was placed for measuring the rates of heat of reaction, except those of the cements and the clay. These solutions consisted of the mixing portions of the chemicals and were placed into 4-in.-diam by approximately 6-in.-long cylinders at an ambient temperature of 39 F. The components of each chemical were also tempered to 39 F temperature before the mixing. Most of the solutions were tested at this temperature except those that did not seem to become too viscous to use as a grout material for injection into soils. Other set or gel tests were performed at approximately -26 F for one lignin based product; results of all set-tested products are presented in terms of their dependence on temperature and time. Cylindrical samples of sand and silt soil, 2.75 in. diameter by 7 in. long, were then pressure injected at 20 lb/sq in. (39 F ambient), and the soil samples were allowed to set overnight, unless otherwise stated, before being soaked in a 39 F wter-bath for 7 days to check the integrity of the injected samples. Samples that were not dissolved were taken from the water-bath and then subjected to unconfined compressive strength tests. The stress-strain data obtained are presented.
Grouting Silt and Sand at Low Temperatures, A Laboratory Investigation
This report presents data from an experimental program undertaken to develop information on proposed and existing chemical grout solutions to provide engineering properties in connection with grouting of soils in ambient temperatures of 39 + or - 1F (3.88C) and below. Twelve grout solutions were investigated, including organic chemicals, sodium silicates, cements, and clay (bentonite). Set or gel tests were performed on each chemical solution, in the center of which a thermocouple was placed for measuring the rates of heat of reaction, except those of the cements and the clay. These solutions consisted of the mixing portions of the chemicals and were placed into 4-in.-diam by approximately 6-in.-long cylinders at an ambient temperature of 39 F. The components of each chemical were also tempered to 39 F temperature before the mixing. Most of the solutions were tested at this temperature except those that did not seem to become too viscous to use as a grout material for injection into soils. Other set or gel tests were performed at approximately -26 F for one lignin based product; results of all set-tested products are presented in terms of their dependence on temperature and time. Cylindrical samples of sand and silt soil, 2.75 in. diameter by 7 in. long, were then pressure injected at 20 lb/sq in. (39 F ambient), and the soil samples were allowed to set overnight, unless otherwise stated, before being soaked in a 39 F wter-bath for 7 days to check the integrity of the injected samples. Samples that were not dissolved were taken from the water-bath and then subjected to unconfined compressive strength tests. The stress-strain data obtained are presented.
Grouting Silt and Sand at Low Temperatures, A Laboratory Investigation
R. Johnson (author)
1979
39 pages
Report
No indication
English
Civil Engineering , Soil Sciences , Grout , Soil stabilization , Sand , Silt , Injection , Pressurization , Slurries , Viscosity , Cements , Sodium silicates , Epoxy resins , Urethanes , Lignin , Clay , Gelation , Heat of reaction , Hardening , Compressive properties , Low temperature , Laboratory tests , Cold regions , Bentonite , Acrylamides
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