Impact of Compactive Effort on Soil Strength of Glacial Lake Columbia Soils
Glacial Lake Columbia (GLC) existed from 15,550 (+/- 450) to 13,050 (+/- 650) years ago (Atwater, 1986) as a result of the Okanagan Lobe of the Cordilleran Ice Sheet damming the Columbia River near present-day Grand Coulee Dam. The lake deposited a fine-grained basal layer that had interbeds of coar...
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fteasuwashington:oai:dc.ewu.edu:srcw_2020_posters-1040 2023-11-05T03:42:43+01:00 Impact of Compactive Effort on Soil Strength of Glacial Lake Columbia Soils Navarra, Alexander M Hendrickson, Dwight Shaw, Jaremy 2020-05-01T07:00:00Z application/pdf https://dc.ewu.edu/srcw_2020_posters/35 https://dc.ewu.edu/context/srcw_2020_posters/article/1040/viewcontent/NavarraHendricksonShaw.pdf unknown EWU Digital Commons https://dc.ewu.edu/srcw_2020_posters/35 https://dc.ewu.edu/context/srcw_2020_posters/article/1040/viewcontent/NavarraHendricksonShaw.pdf http://creativecommons.org/licenses/by-nc-nd/4.0/ 2020 Symposium Posters Geology Geotechnical Engineering Glacial Lake Columbia text 2020 fteasuwashington 2023-10-10T11:35:31Z Glacial Lake Columbia (GLC) existed from 15,550 (+/- 450) to 13,050 (+/- 650) years ago (Atwater, 1986) as a result of the Okanagan Lobe of the Cordilleran Ice Sheet damming the Columbia River near present-day Grand Coulee Dam. The lake deposited a fine-grained basal layer that had interbeds of coarse Missoula Flood deposits and later lake deposits above. Because these GLC deposits are present around most of the Spokane area, they are important to civil engineering and development. We sampled the basal layer of GLC soils from the Peone Prairie, WA. We performed prerequisite testing before the main experiment, with ASTM D422 for particle size along with coefficients of uniformity and curvature, D854 for specific gravity, D698 for optimal water content, and D4318 for liquid and plastic limits along with plasticity index. We performed the main experiment according to ASTM D2166 to determine unconfined compressive strength at varying compactive efforts. We performed three unconfined compressive strength tests at a CE of 7,425 ft*lbs/ft3, a CE of 12,375 ft*lbs/ft3, and a CE of 17,325 ft*lbs/ft3. The ultimate strength for a CE of 7,425 ft*lbs/ft3 is 4,290.26 psf, and the theta angle is 60°. The ultimate strength for a CE of 12,375 ft*lbs/ft3 is 5,519.07 psf, and the theta angle is 68°. The ultimate strength for a CE of 17,325 ft*lbs/ft3 is 7,077.58 psf, and the theta angle is 68°. We determined that ultimate strength increased with compactive effort. The Unified Soil Classification System name for GLC soils is ML. Text Ice Sheet Eastern Washington University: EWU Digital Commons |
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Eastern Washington University: EWU Digital Commons |
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fteasuwashington |
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Geology Geotechnical Engineering Glacial Lake Columbia |
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Geology Geotechnical Engineering Glacial Lake Columbia Navarra, Alexander M Hendrickson, Dwight Shaw, Jaremy Impact of Compactive Effort on Soil Strength of Glacial Lake Columbia Soils |
topic_facet |
Geology Geotechnical Engineering Glacial Lake Columbia |
description |
Glacial Lake Columbia (GLC) existed from 15,550 (+/- 450) to 13,050 (+/- 650) years ago (Atwater, 1986) as a result of the Okanagan Lobe of the Cordilleran Ice Sheet damming the Columbia River near present-day Grand Coulee Dam. The lake deposited a fine-grained basal layer that had interbeds of coarse Missoula Flood deposits and later lake deposits above. Because these GLC deposits are present around most of the Spokane area, they are important to civil engineering and development. We sampled the basal layer of GLC soils from the Peone Prairie, WA. We performed prerequisite testing before the main experiment, with ASTM D422 for particle size along with coefficients of uniformity and curvature, D854 for specific gravity, D698 for optimal water content, and D4318 for liquid and plastic limits along with plasticity index. We performed the main experiment according to ASTM D2166 to determine unconfined compressive strength at varying compactive efforts. We performed three unconfined compressive strength tests at a CE of 7,425 ft*lbs/ft3, a CE of 12,375 ft*lbs/ft3, and a CE of 17,325 ft*lbs/ft3. The ultimate strength for a CE of 7,425 ft*lbs/ft3 is 4,290.26 psf, and the theta angle is 60°. The ultimate strength for a CE of 12,375 ft*lbs/ft3 is 5,519.07 psf, and the theta angle is 68°. The ultimate strength for a CE of 17,325 ft*lbs/ft3 is 7,077.58 psf, and the theta angle is 68°. We determined that ultimate strength increased with compactive effort. The Unified Soil Classification System name for GLC soils is ML. |
format |
Text |
author |
Navarra, Alexander M Hendrickson, Dwight Shaw, Jaremy |
author_facet |
Navarra, Alexander M Hendrickson, Dwight Shaw, Jaremy |
author_sort |
Navarra, Alexander M |
title |
Impact of Compactive Effort on Soil Strength of Glacial Lake Columbia Soils |
title_short |
Impact of Compactive Effort on Soil Strength of Glacial Lake Columbia Soils |
title_full |
Impact of Compactive Effort on Soil Strength of Glacial Lake Columbia Soils |
title_fullStr |
Impact of Compactive Effort on Soil Strength of Glacial Lake Columbia Soils |
title_full_unstemmed |
Impact of Compactive Effort on Soil Strength of Glacial Lake Columbia Soils |
title_sort |
impact of compactive effort on soil strength of glacial lake columbia soils |
publisher |
EWU Digital Commons |
publishDate |
2020 |
url |
https://dc.ewu.edu/srcw_2020_posters/35 https://dc.ewu.edu/context/srcw_2020_posters/article/1040/viewcontent/NavarraHendricksonShaw.pdf |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
2020 Symposium Posters |
op_relation |
https://dc.ewu.edu/srcw_2020_posters/35 https://dc.ewu.edu/context/srcw_2020_posters/article/1040/viewcontent/NavarraHendricksonShaw.pdf |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/4.0/ |
_version_ |
1781700105244508160 |