Lime- and Cement-Treated Sandy Lean Clay for Highway Subgrade in China
AbstractSandy lean clay (SLC) has a high content of fine sand and silt with poor compressibility and water stability. It threatens the structural stability of highways in regions where this soil type is common. Improvement of SLC for enhancing highway structural stability has attracted wide research...
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| creator | Feng, Ruiling Wu, Lijian Liu, Dongming Wang, Yan Peng, Bo |
| description | AbstractSandy lean clay (SLC) has a high content of fine sand and silt with poor compressibility and water stability. It threatens the structural stability of highways in regions where this soil type is common. Improvement of SLC for enhancing highway structural stability has attracted wide research interest. Therefore, based on a study of the basic physical-mechanical characteristics of sandy lean clay along the Puyong Expressway, the water stability of the compacted soils was investigated based on a series of indices, including cohesion, angle of internal friction, and degree of compaction. The characteristics of cement- or lime-treated soil were also studied. The results show that the water status has a great effect on the cohesion of SLC. The soaked California bearing ratio (CBR) for untreated SLC was only about 3% to 37% that of unsoaked CBR, depending on the moisture content, indicating that untreated SLC has very weak water stability. It is suggested that the water content of SLC should be controlled at a level slightly higher than the optimal moisture content (ωopt+2%) during compaction. The degree of compaction should not be used as the compaction quality control index when the subgrade is filled with SLC. CBR and other strength indicators should be used as the compaction quality control indices of SLC subgrade. Based on the results of numerical simulations using the finite-element method, improvement measures of each layer and the corresponding waterproof measures of the SLC subgrade are recommended when the embankment is 25 m thick. |
| doi_str_mv | 10.1061/(ASCE)MT.1943-5533.0002984 |
| format | Article |
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It threatens the structural stability of highways in regions where this soil type is common. Improvement of SLC for enhancing highway structural stability has attracted wide research interest. Therefore, based on a study of the basic physical-mechanical characteristics of sandy lean clay along the Puyong Expressway, the water stability of the compacted soils was investigated based on a series of indices, including cohesion, angle of internal friction, and degree of compaction. The characteristics of cement- or lime-treated soil were also studied. The results show that the water status has a great effect on the cohesion of SLC. The soaked California bearing ratio (CBR) for untreated SLC was only about 3% to 37% that of unsoaked CBR, depending on the moisture content, indicating that untreated SLC has very weak water stability. It is suggested that the water content of SLC should be controlled at a level slightly higher than the optimal moisture content (ωopt+2%) during compaction. The degree of compaction should not be used as the compaction quality control index when the subgrade is filled with SLC. CBR and other strength indicators should be used as the compaction quality control indices of SLC subgrade. Based on the results of numerical simulations using the finite-element method, improvement measures of each layer and the corresponding waterproof measures of the SLC subgrade are recommended when the embankment is 25 m thick.</description><identifier>ISSN: 0899-1561</identifier><identifier>EISSN: 1943-5533</identifier><identifier>DOI: 10.1061/(ASCE)MT.1943-5533.0002984</identifier><language>eng</language><publisher>New York: American Society of Civil Engineers</publisher><subject>Building materials ; California bearing ratio ; Civil engineering ; Clay ; Cohesion ; Compacted soils ; Computer simulation ; Finite element method ; Internal friction ; Kaolinite ; Lime soil stabilization ; Mechanical properties ; Moisture content ; Penetration tests ; Quality control ; Roads & highways ; Soil compaction ; Soil compressibility ; Soil improvement ; Soil investigations ; Soil lime ; Soil moisture ; Soil stability ; Structural stability ; Subgrades ; Technical Papers ; Water compressibility ; Water stability</subject><ispartof>Journal of materials in civil engineering, 2020-01, Vol.32 (1)</ispartof><rights>2019 American Society of Civil Engineers</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a403t-b6aa221a8595cfe9e4aa75d702580aad17f92e2e468cfafa69fecb457437411d3</citedby><cites>FETCH-LOGICAL-a403t-b6aa221a8595cfe9e4aa75d702580aad17f92e2e468cfafa69fecb457437411d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttp://ascelibrary.org/doi/pdf/10.1061/(ASCE)MT.1943-5533.0002984$$EPDF$$P50$$Gasce$$H</linktopdf><linktohtml>$$Uhttp://ascelibrary.org/doi/abs/10.1061/(ASCE)MT.1943-5533.0002984$$EHTML$$P50$$Gasce$$H</linktohtml><link.rule.ids>315,781,785,27926,27927,76195,76203</link.rule.ids></links><search><creatorcontrib>Feng, Ruiling</creatorcontrib><creatorcontrib>Wu, Lijian</creatorcontrib><creatorcontrib>Liu, Dongming</creatorcontrib><creatorcontrib>Wang, Yan</creatorcontrib><creatorcontrib>Peng, Bo</creatorcontrib><title>Lime- and Cement-Treated Sandy Lean Clay for Highway Subgrade in China</title><title>Journal of materials in civil engineering</title><description>AbstractSandy lean clay (SLC) has a high content of fine sand and silt with poor compressibility and water stability. It threatens the structural stability of highways in regions where this soil type is common. Improvement of SLC for enhancing highway structural stability has attracted wide research interest. Therefore, based on a study of the basic physical-mechanical characteristics of sandy lean clay along the Puyong Expressway, the water stability of the compacted soils was investigated based on a series of indices, including cohesion, angle of internal friction, and degree of compaction. The characteristics of cement- or lime-treated soil were also studied. The results show that the water status has a great effect on the cohesion of SLC. The soaked California bearing ratio (CBR) for untreated SLC was only about 3% to 37% that of unsoaked CBR, depending on the moisture content, indicating that untreated SLC has very weak water stability. It is suggested that the water content of SLC should be controlled at a level slightly higher than the optimal moisture content (ωopt+2%) during compaction. The degree of compaction should not be used as the compaction quality control index when the subgrade is filled with SLC. CBR and other strength indicators should be used as the compaction quality control indices of SLC subgrade. Based on the results of numerical simulations using the finite-element method, improvement measures of each layer and the corresponding waterproof measures of the SLC subgrade are recommended when the embankment is 25 m thick.</description><subject>Building materials</subject><subject>California bearing ratio</subject><subject>Civil engineering</subject><subject>Clay</subject><subject>Cohesion</subject><subject>Compacted soils</subject><subject>Computer simulation</subject><subject>Finite element method</subject><subject>Internal friction</subject><subject>Kaolinite</subject><subject>Lime soil stabilization</subject><subject>Mechanical properties</subject><subject>Moisture content</subject><subject>Penetration tests</subject><subject>Quality control</subject><subject>Roads & highways</subject><subject>Soil compaction</subject><subject>Soil compressibility</subject><subject>Soil improvement</subject><subject>Soil investigations</subject><subject>Soil lime</subject><subject>Soil moisture</subject><subject>Soil stability</subject><subject>Structural stability</subject><subject>Subgrades</subject><subject>Technical Papers</subject><subject>Water compressibility</subject><subject>Water stability</subject><issn>0899-1561</issn><issn>1943-5533</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNp1kEFPwkAQhTdGExH9Dxu96KG4291tu95IA2JS4oF63gztLJRAi9sSw793G1BPnmby5r03yUfIPWcjziL-_DhepJOneT7iWopAKSFGjLFQJ_KCDH61SzJgidYBVxG_Jjdtu_EmwSQbkGlW7TCgUJc0xR3WXZA7hA5LuvDakWYINU23cKS2cXRWrdZffl8clisHJdLKH9dVDbfkysK2xbvzHJKP6SRPZ0H2_vqWjrMAJBNdsIwAwpBDorQqLGqUALEqYxaqhAGUPLY6xBBllBQWLETaYrGUKpYilpyXYkgeTr1713wesO3Mpjm42r80ofBEkjBhkXe9nFyFa9rWoTV7V-3AHQ1npudmTM_NzHPTMzI9I3Pm5sPRKQxtgX_1P8n_g9_IFHAr</recordid><startdate>20200101</startdate><enddate>20200101</enddate><creator>Feng, Ruiling</creator><creator>Wu, Lijian</creator><creator>Liu, Dongming</creator><creator>Wang, Yan</creator><creator>Peng, Bo</creator><general>American Society of Civil Engineers</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope></search><sort><creationdate>20200101</creationdate><title>Lime- and Cement-Treated Sandy Lean Clay for Highway Subgrade in China</title><author>Feng, Ruiling ; Wu, Lijian ; Liu, Dongming ; Wang, Yan ; Peng, Bo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a403t-b6aa221a8595cfe9e4aa75d702580aad17f92e2e468cfafa69fecb457437411d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Building materials</topic><topic>California bearing ratio</topic><topic>Civil engineering</topic><topic>Clay</topic><topic>Cohesion</topic><topic>Compacted soils</topic><topic>Computer simulation</topic><topic>Finite element method</topic><topic>Internal friction</topic><topic>Kaolinite</topic><topic>Lime soil stabilization</topic><topic>Mechanical properties</topic><topic>Moisture content</topic><topic>Penetration tests</topic><topic>Quality control</topic><topic>Roads & highways</topic><topic>Soil compaction</topic><topic>Soil compressibility</topic><topic>Soil improvement</topic><topic>Soil investigations</topic><topic>Soil lime</topic><topic>Soil moisture</topic><topic>Soil stability</topic><topic>Structural stability</topic><topic>Subgrades</topic><topic>Technical Papers</topic><topic>Water compressibility</topic><topic>Water stability</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Feng, Ruiling</creatorcontrib><creatorcontrib>Wu, Lijian</creatorcontrib><creatorcontrib>Liu, Dongming</creatorcontrib><creatorcontrib>Wang, Yan</creatorcontrib><creatorcontrib>Peng, Bo</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Journal of materials in civil engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Feng, Ruiling</au><au>Wu, Lijian</au><au>Liu, Dongming</au><au>Wang, Yan</au><au>Peng, Bo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Lime- and Cement-Treated Sandy Lean Clay for Highway Subgrade in China</atitle><jtitle>Journal of materials in civil engineering</jtitle><date>2020-01-01</date><risdate>2020</risdate><volume>32</volume><issue>1</issue><issn>0899-1561</issn><eissn>1943-5533</eissn><abstract>AbstractSandy lean clay (SLC) has a high content of fine sand and silt with poor compressibility and water stability. It threatens the structural stability of highways in regions where this soil type is common. Improvement of SLC for enhancing highway structural stability has attracted wide research interest. Therefore, based on a study of the basic physical-mechanical characteristics of sandy lean clay along the Puyong Expressway, the water stability of the compacted soils was investigated based on a series of indices, including cohesion, angle of internal friction, and degree of compaction. The characteristics of cement- or lime-treated soil were also studied. The results show that the water status has a great effect on the cohesion of SLC. The soaked California bearing ratio (CBR) for untreated SLC was only about 3% to 37% that of unsoaked CBR, depending on the moisture content, indicating that untreated SLC has very weak water stability. It is suggested that the water content of SLC should be controlled at a level slightly higher than the optimal moisture content (ωopt+2%) during compaction. The degree of compaction should not be used as the compaction quality control index when the subgrade is filled with SLC. CBR and other strength indicators should be used as the compaction quality control indices of SLC subgrade. Based on the results of numerical simulations using the finite-element method, improvement measures of each layer and the corresponding waterproof measures of the SLC subgrade are recommended when the embankment is 25 m thick.</abstract><cop>New York</cop><pub>American Society of Civil Engineers</pub><doi>10.1061/(ASCE)MT.1943-5533.0002984</doi></addata></record> |
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| source | American Society of Civil Engineers:NESLI2:Journals:2014 |
| subjects | Building materials California bearing ratio Civil engineering Clay Cohesion Compacted soils Computer simulation Finite element method Internal friction Kaolinite Lime soil stabilization Mechanical properties Moisture content Penetration tests Quality control Roads & highways Soil compaction Soil compressibility Soil improvement Soil investigations Soil lime Soil moisture Soil stability Structural stability Subgrades Technical Papers Water compressibility Water stability |
| title | Lime- and Cement-Treated Sandy Lean Clay for Highway Subgrade in China |
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