Field investigation of shallow soft-soil highway subgrade treated by mass carbonation technology
The innovative carbonation technique based on reactive MgO and CO 2 has been identified as an environmentally friendly and efficient method in the improvement of weak soils. Previous laboratory studies have indicated that carbonated MgO-admixed soils had significant improvement in mechanical propert...
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| Veröffentlicht in: | Canadian geotechnical journal 2021, Vol.58 (1), p.97-113 |
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| container_title | Canadian geotechnical journal |
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| creator | Liu, Song-Yu Cai, Guang-Hua Du, Guang-Yin Wang, Liang Li, Jiang-Shan Qian, Xing-Chen |
| description | The innovative carbonation technique based on reactive MgO and CO
2
has been identified as an environmentally friendly and efficient method in the improvement of weak soils. Previous laboratory studies have indicated that carbonated MgO-admixed soils had significant improvement in mechanical properties. However, there are to date limited investigations on the soft-soil field application of this technique. In this study, a field trial was conducted to ascertain the feasibility of the MgO mass carbonation technique in improving shallow soft-soil subgrades. A series of field tests, including temperature, dynamic cone penetrometer, and light-weight deflectometer tests, were undertaken. The results indicated that compared with uncarbonated soil layers, there was two to three times increase in dynamic resilient moduli and soil resistances of carbonated MgO-admixed soils. The outcomes of this field investigation will contribute to the utilization of the combined stabilizer of MgO and CO
2
and the mass carbonation technology in subgrade improvement. |
| doi_str_mv | 10.1139/cgj-2020-0008 |
| format | Article |
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2
has been identified as an environmentally friendly and efficient method in the improvement of weak soils. Previous laboratory studies have indicated that carbonated MgO-admixed soils had significant improvement in mechanical properties. However, there are to date limited investigations on the soft-soil field application of this technique. In this study, a field trial was conducted to ascertain the feasibility of the MgO mass carbonation technique in improving shallow soft-soil subgrades. A series of field tests, including temperature, dynamic cone penetrometer, and light-weight deflectometer tests, were undertaken. The results indicated that compared with uncarbonated soil layers, there was two to three times increase in dynamic resilient moduli and soil resistances of carbonated MgO-admixed soils. The outcomes of this field investigation will contribute to the utilization of the combined stabilizer of MgO and CO
2
and the mass carbonation technology in subgrade improvement.</description><identifier>ISSN: 0008-3674</identifier><identifier>EISSN: 1208-6010</identifier><identifier>DOI: 10.1139/cgj-2020-0008</identifier><language>eng</language><publisher>1840 Woodward Drive, Suite 1, Ottawa, ON K2C 0P7: NRC Research Press</publisher><subject>Carbon dioxide ; Carbonatation ; carbonatation de masse ; Carbonates ; Carbonation ; engineering properties ; Environmental aspects ; Feasibility studies ; field investigation ; Field investigations ; Field tests ; Freeways ; Magnesium oxide ; magnésie réactive ; Mass ; mass carbonation ; Mechanical properties ; Penetrometers ; propriétés techniques ; reactive magnesia ; soft soil ; Soil ; Soil dynamics ; Soil improvement ; Soil investigations ; Soil layers ; Soil mechanics ; Soil temperature ; Soils ; sol meuble ; Technology ; Terrain ; Tests ; Weight reduction ; étude de terrain</subject><ispartof>Canadian geotechnical journal, 2021, Vol.58 (1), p.97-113</ispartof><rights>COPYRIGHT 2021 NRC Research Press</rights><rights>2021 Published by NRC Research Press</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a529t-2fbb64c287339fe6b2498c13f6a3f2947dcfa2dba6ef1529e42afe1d0f35932b3</citedby><cites>FETCH-LOGICAL-a529t-2fbb64c287339fe6b2498c13f6a3f2947dcfa2dba6ef1529e42afe1d0f35932b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://cdnsciencepub.com/doi/pdf/10.1139/cgj-2020-0008$$EPDF$$P50$$Gnrcresearch$$H</linktopdf><linktohtml>$$Uhttps://cdnsciencepub.com/doi/full/10.1139/cgj-2020-0008$$EHTML$$P50$$Gnrcresearch$$H</linktohtml><link.rule.ids>314,780,784,2932,4024,27923,27924,27925,64428,65234</link.rule.ids></links><search><creatorcontrib>Liu, Song-Yu</creatorcontrib><creatorcontrib>Cai, Guang-Hua</creatorcontrib><creatorcontrib>Du, Guang-Yin</creatorcontrib><creatorcontrib>Wang, Liang</creatorcontrib><creatorcontrib>Li, Jiang-Shan</creatorcontrib><creatorcontrib>Qian, Xing-Chen</creatorcontrib><title>Field investigation of shallow soft-soil highway subgrade treated by mass carbonation technology</title><title>Canadian geotechnical journal</title><description>The innovative carbonation technique based on reactive MgO and CO
2
has been identified as an environmentally friendly and efficient method in the improvement of weak soils. Previous laboratory studies have indicated that carbonated MgO-admixed soils had significant improvement in mechanical properties. However, there are to date limited investigations on the soft-soil field application of this technique. In this study, a field trial was conducted to ascertain the feasibility of the MgO mass carbonation technique in improving shallow soft-soil subgrades. A series of field tests, including temperature, dynamic cone penetrometer, and light-weight deflectometer tests, were undertaken. The results indicated that compared with uncarbonated soil layers, there was two to three times increase in dynamic resilient moduli and soil resistances of carbonated MgO-admixed soils. The outcomes of this field investigation will contribute to the utilization of the combined stabilizer of MgO and CO
2
and the mass carbonation technology in subgrade improvement.</description><subject>Carbon dioxide</subject><subject>Carbonatation</subject><subject>carbonatation de masse</subject><subject>Carbonates</subject><subject>Carbonation</subject><subject>engineering properties</subject><subject>Environmental aspects</subject><subject>Feasibility studies</subject><subject>field investigation</subject><subject>Field investigations</subject><subject>Field tests</subject><subject>Freeways</subject><subject>Magnesium oxide</subject><subject>magnésie réactive</subject><subject>Mass</subject><subject>mass carbonation</subject><subject>Mechanical properties</subject><subject>Penetrometers</subject><subject>propriétés techniques</subject><subject>reactive magnesia</subject><subject>soft soil</subject><subject>Soil</subject><subject>Soil dynamics</subject><subject>Soil improvement</subject><subject>Soil investigations</subject><subject>Soil layers</subject><subject>Soil mechanics</subject><subject>Soil temperature</subject><subject>Soils</subject><subject>sol meuble</subject><subject>Technology</subject><subject>Terrain</subject><subject>Tests</subject><subject>Weight reduction</subject><subject>étude de terrain</subject><issn>0008-3674</issn><issn>1208-6010</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNqV0t9rFDEQB_BFFDyrj74HffIhNcnm9sdjKdYWigVtn-NsdrKbYy-5Jjnr_fdmuYIWFqTkYWD4zISBb1G85-yU87L9rIcNFUwwyhhrXhQrLlhDK8bZy2I1t2hZ1fJ18SbGDWNcSiFWxc8Li1NPrPuFMdkBkvWOeEPiCNPkH0j0JtHo7URGO4wPcCBx3w0BeiQpICTsSXcgW4iRaAidd8cNCfXo_OSHw9vilYEp4rvHelLcXXy5Pb-k1zdfr87PrimsRZuoMF1XSS2auixbg1UnZNtoXpoKSiNaWffagOg7qNDwPIFSgEHeM1Ou21J05Unx8bh3F_z9Ph-jNn4fXP5SCVnLhrF6Xf1VA0yorDM-BdBbG7U6q2bE61ZmRRfUgA4DTN6hsbn9xH9Y8Hpn79W_6HQB5dfj1urFrZ-eDGST8HcaYB-juvrx_Rn22-J1OvgYAxq1C3YL4aA4U3OQVA6SmoOk5tRkz47eBR0wIgQ9_mfkD8Iox-Q</recordid><startdate>2021</startdate><enddate>2021</enddate><creator>Liu, Song-Yu</creator><creator>Cai, Guang-Hua</creator><creator>Du, Guang-Yin</creator><creator>Wang, Liang</creator><creator>Li, Jiang-Shan</creator><creator>Qian, Xing-Chen</creator><general>NRC Research Press</general><general>Canadian Science Publishing NRC Research Press</general><scope>AAYXX</scope><scope>CITATION</scope><scope>ISN</scope><scope>ISR</scope><scope>7TG</scope><scope>7UA</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H96</scope><scope>KL.</scope><scope>KR7</scope><scope>L.G</scope></search><sort><creationdate>2021</creationdate><title>Field investigation of shallow soft-soil highway subgrade treated by mass carbonation technology</title><author>Liu, Song-Yu ; 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2
has been identified as an environmentally friendly and efficient method in the improvement of weak soils. Previous laboratory studies have indicated that carbonated MgO-admixed soils had significant improvement in mechanical properties. However, there are to date limited investigations on the soft-soil field application of this technique. In this study, a field trial was conducted to ascertain the feasibility of the MgO mass carbonation technique in improving shallow soft-soil subgrades. A series of field tests, including temperature, dynamic cone penetrometer, and light-weight deflectometer tests, were undertaken. The results indicated that compared with uncarbonated soil layers, there was two to three times increase in dynamic resilient moduli and soil resistances of carbonated MgO-admixed soils. The outcomes of this field investigation will contribute to the utilization of the combined stabilizer of MgO and CO
2
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| subjects | Carbon dioxide Carbonatation carbonatation de masse Carbonates Carbonation engineering properties Environmental aspects Feasibility studies field investigation Field investigations Field tests Freeways Magnesium oxide magnésie réactive Mass mass carbonation Mechanical properties Penetrometers propriétés techniques reactive magnesia soft soil Soil Soil dynamics Soil improvement Soil investigations Soil layers Soil mechanics Soil temperature Soils sol meuble Technology Terrain Tests Weight reduction étude de terrain |
| title | Field investigation of shallow soft-soil highway subgrade treated by mass carbonation technology |
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