Mechanical properties of cemented tailings backfill with chloride-free antifreeze
In cold regions with sub-zero surface temperatures, the addition of chloride-free antifreeze (Ca(NO 2 ) 2 , Ca(NO 3 ) 2 , and CO(NH 2 ) 2 ) is an inexpensive method to prevent pipeline freezing during cemented tailings backfill (CTB) transport. However, the curing temperature of CTB after reaching t...
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| Veröffentlicht in: | Environmental science and pollution research international 2023-03, Vol.30 (13), p.36350-36363 |
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| creator | Zhou, Yibo Yang, Baogui Liu, Shuaigang Tian, Xichun Yang, Haigang |
| description | In cold regions with sub-zero surface temperatures, the addition of chloride-free antifreeze (Ca(NO
2
)
2
, Ca(NO
3
)
2
, and CO(NH
2
)
2
) is an inexpensive method to prevent pipeline freezing during cemented tailings backfill (CTB) transport. However, the curing temperature of CTB after reaching the mine cavity tends to be above-zero. The mechanical properties of CTB with a chloride-free antifreeze in above-zero environments have not been investigated. Therefore, this study aimed at thoroughly exploring the effect of chloride-free antifreeze on the mechanical properties of CTB in above-zero environments. CTB samples with chloride-free antifreeze (Ca(NO
2
)
2
, Ca(NO
3
)
2
, and CO(NH
2
)
2
) and different concentrations (0, 5, 15, and 35 g/L) were prepared and cured in different above-zero environments (2, 20, and 35 °C). The unconfined compressive strength tests were performed after 1, 3, 7, and 28 days. In addition, a series of microstructural analyses and monitoring experiments were conducted. The results indicated that the addition of a 15-g/L chloride-free antifreeze decreased the strength of CTB curing at 20 °C after 1, 3, and 7 days and increased the strength after 28 days. Moreover, the CTB strength evolution with the curing time depends on the chloride-free antifreeze concentration and above-zero curing temperature. According to the TG/DTG analyses results, calcium ions had a promoting effect on the carbonation of calcium hydroxide. The findings of this study can provide a guideline for the application of chloride-free antifreeze on the mine backfill in cold regions. |
| doi_str_mv | 10.1007/s11356-022-24924-3 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_2757056480</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2887631675</sourcerecordid><originalsourceid>FETCH-LOGICAL-c380t-ef4f3c15455a4ae9e179a9b2e69db911b3ab44c5bf1ded3c3a01d370bd854fd23</originalsourceid><addsrcrecordid>eNqFkE1LAzEQhoMoVqt_wIPs0ctqPjeboxS_oCKCnkM2mbSp292abBH99W7dKp70NAPzvC_Dg9AJwecEY3mRCGGiyDGlOeWK8pztoANSEJ5LrtTur32EDlNaYEyxonIfjVghuCw5PUCP92DnpgnW1NkqtiuIXYCUtT6zsISmA5d1JtShmaWsMvbFh7rO3kI3z-y8bmNwkPsIkJmmC5vlA47Qnjd1guPtHKPn66unyW0-fbi5m1xOc8tK3OXguWeWCC6E4QYUEKmMqigUylWKkIqZinMrKk8cOGaZwcQxiStXCu4dZWN0NvT2b7-uIXV6GZKFujYNtOukaVnKgpFCiv9RKSQWBS9xj9IBtbFNKYLXqxiWJr5rgvXGuh6s6966_rKuWR863favqyW4n8i35h5gA5D6UzODqBftOja9nr9qPwGVFI4k</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2757056480</pqid></control><display><type>article</type><title>Mechanical properties of cemented tailings backfill with chloride-free antifreeze</title><source>MEDLINE</source><source>SpringerLink Journals - AutoHoldings</source><creator>Zhou, Yibo ; Yang, Baogui ; Liu, Shuaigang ; Tian, Xichun ; Yang, Haigang</creator><creatorcontrib>Zhou, Yibo ; Yang, Baogui ; Liu, Shuaigang ; Tian, Xichun ; Yang, Haigang</creatorcontrib><description>In cold regions with sub-zero surface temperatures, the addition of chloride-free antifreeze (Ca(NO
2
)
2
, Ca(NO
3
)
2
, and CO(NH
2
)
2
) is an inexpensive method to prevent pipeline freezing during cemented tailings backfill (CTB) transport. However, the curing temperature of CTB after reaching the mine cavity tends to be above-zero. The mechanical properties of CTB with a chloride-free antifreeze in above-zero environments have not been investigated. Therefore, this study aimed at thoroughly exploring the effect of chloride-free antifreeze on the mechanical properties of CTB in above-zero environments. CTB samples with chloride-free antifreeze (Ca(NO
2
)
2
, Ca(NO
3
)
2
, and CO(NH
2
)
2
) and different concentrations (0, 5, 15, and 35 g/L) were prepared and cured in different above-zero environments (2, 20, and 35 °C). The unconfined compressive strength tests were performed after 1, 3, 7, and 28 days. In addition, a series of microstructural analyses and monitoring experiments were conducted. The results indicated that the addition of a 15-g/L chloride-free antifreeze decreased the strength of CTB curing at 20 °C after 1, 3, and 7 days and increased the strength after 28 days. Moreover, the CTB strength evolution with the curing time depends on the chloride-free antifreeze concentration and above-zero curing temperature. According to the TG/DTG analyses results, calcium ions had a promoting effect on the carbonation of calcium hydroxide. The findings of this study can provide a guideline for the application of chloride-free antifreeze on the mine backfill in cold regions.</description><identifier>ISSN: 1614-7499</identifier><identifier>EISSN: 1614-7499</identifier><identifier>DOI: 10.1007/s11356-022-24924-3</identifier><identifier>PMID: 36547842</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Aquatic Pollution ; Atmospheric Protection/Air Quality Control/Air Pollution ; calcium ; calcium hydroxide ; carbonation ; Chlorides ; cold ; compression strength ; Compressive Strength ; Earth and Environmental Science ; Ecotoxicology ; Environment ; Environmental Chemistry ; Environmental Health ; evolution ; Freezing ; guidelines ; Nitrogen Dioxide ; Research Article ; Temperature ; Waste Water Technology ; Water Management ; Water Pollution Control</subject><ispartof>Environmental science and pollution research international, 2023-03, Vol.30 (13), p.36350-36363</ispartof><rights>The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2022. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.</rights><rights>2022. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c380t-ef4f3c15455a4ae9e179a9b2e69db911b3ab44c5bf1ded3c3a01d370bd854fd23</citedby><cites>FETCH-LOGICAL-c380t-ef4f3c15455a4ae9e179a9b2e69db911b3ab44c5bf1ded3c3a01d370bd854fd23</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11356-022-24924-3$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11356-022-24924-3$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,777,781,27905,27906,41469,42538,51300</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/36547842$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Zhou, Yibo</creatorcontrib><creatorcontrib>Yang, Baogui</creatorcontrib><creatorcontrib>Liu, Shuaigang</creatorcontrib><creatorcontrib>Tian, Xichun</creatorcontrib><creatorcontrib>Yang, Haigang</creatorcontrib><title>Mechanical properties of cemented tailings backfill with chloride-free antifreeze</title><title>Environmental science and pollution research international</title><addtitle>Environ Sci Pollut Res</addtitle><addtitle>Environ Sci Pollut Res Int</addtitle><description>In cold regions with sub-zero surface temperatures, the addition of chloride-free antifreeze (Ca(NO
2
)
2
, Ca(NO
3
)
2
, and CO(NH
2
)
2
) is an inexpensive method to prevent pipeline freezing during cemented tailings backfill (CTB) transport. However, the curing temperature of CTB after reaching the mine cavity tends to be above-zero. The mechanical properties of CTB with a chloride-free antifreeze in above-zero environments have not been investigated. Therefore, this study aimed at thoroughly exploring the effect of chloride-free antifreeze on the mechanical properties of CTB in above-zero environments. CTB samples with chloride-free antifreeze (Ca(NO
2
)
2
, Ca(NO
3
)
2
, and CO(NH
2
)
2
) and different concentrations (0, 5, 15, and 35 g/L) were prepared and cured in different above-zero environments (2, 20, and 35 °C). The unconfined compressive strength tests were performed after 1, 3, 7, and 28 days. In addition, a series of microstructural analyses and monitoring experiments were conducted. The results indicated that the addition of a 15-g/L chloride-free antifreeze decreased the strength of CTB curing at 20 °C after 1, 3, and 7 days and increased the strength after 28 days. Moreover, the CTB strength evolution with the curing time depends on the chloride-free antifreeze concentration and above-zero curing temperature. According to the TG/DTG analyses results, calcium ions had a promoting effect on the carbonation of calcium hydroxide. The findings of this study can provide a guideline for the application of chloride-free antifreeze on the mine backfill in cold regions.</description><subject>Aquatic Pollution</subject><subject>Atmospheric Protection/Air Quality Control/Air Pollution</subject><subject>calcium</subject><subject>calcium hydroxide</subject><subject>carbonation</subject><subject>Chlorides</subject><subject>cold</subject><subject>compression strength</subject><subject>Compressive Strength</subject><subject>Earth and Environmental Science</subject><subject>Ecotoxicology</subject><subject>Environment</subject><subject>Environmental Chemistry</subject><subject>Environmental Health</subject><subject>evolution</subject><subject>Freezing</subject><subject>guidelines</subject><subject>Nitrogen Dioxide</subject><subject>Research Article</subject><subject>Temperature</subject><subject>Waste Water Technology</subject><subject>Water Management</subject><subject>Water Pollution Control</subject><issn>1614-7499</issn><issn>1614-7499</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkE1LAzEQhoMoVqt_wIPs0ctqPjeboxS_oCKCnkM2mbSp292abBH99W7dKp70NAPzvC_Dg9AJwecEY3mRCGGiyDGlOeWK8pztoANSEJ5LrtTur32EDlNaYEyxonIfjVghuCw5PUCP92DnpgnW1NkqtiuIXYCUtT6zsISmA5d1JtShmaWsMvbFh7rO3kI3z-y8bmNwkPsIkJmmC5vlA47Qnjd1guPtHKPn66unyW0-fbi5m1xOc8tK3OXguWeWCC6E4QYUEKmMqigUylWKkIqZinMrKk8cOGaZwcQxiStXCu4dZWN0NvT2b7-uIXV6GZKFujYNtOukaVnKgpFCiv9RKSQWBS9xj9IBtbFNKYLXqxiWJr5rgvXGuh6s6966_rKuWR863favqyW4n8i35h5gA5D6UzODqBftOja9nr9qPwGVFI4k</recordid><startdate>20230301</startdate><enddate>20230301</enddate><creator>Zhou, Yibo</creator><creator>Yang, Baogui</creator><creator>Liu, Shuaigang</creator><creator>Tian, Xichun</creator><creator>Yang, Haigang</creator><general>Springer Berlin Heidelberg</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7S9</scope><scope>L.6</scope></search><sort><creationdate>20230301</creationdate><title>Mechanical properties of cemented tailings backfill with chloride-free antifreeze</title><author>Zhou, Yibo ; Yang, Baogui ; Liu, Shuaigang ; Tian, Xichun ; Yang, Haigang</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c380t-ef4f3c15455a4ae9e179a9b2e69db911b3ab44c5bf1ded3c3a01d370bd854fd23</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Aquatic Pollution</topic><topic>Atmospheric Protection/Air Quality Control/Air Pollution</topic><topic>calcium</topic><topic>calcium hydroxide</topic><topic>carbonation</topic><topic>Chlorides</topic><topic>cold</topic><topic>compression strength</topic><topic>Compressive Strength</topic><topic>Earth and Environmental Science</topic><topic>Ecotoxicology</topic><topic>Environment</topic><topic>Environmental Chemistry</topic><topic>Environmental Health</topic><topic>evolution</topic><topic>Freezing</topic><topic>guidelines</topic><topic>Nitrogen Dioxide</topic><topic>Research Article</topic><topic>Temperature</topic><topic>Waste Water Technology</topic><topic>Water Management</topic><topic>Water Pollution Control</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhou, Yibo</creatorcontrib><creatorcontrib>Yang, Baogui</creatorcontrib><creatorcontrib>Liu, Shuaigang</creatorcontrib><creatorcontrib>Tian, Xichun</creatorcontrib><creatorcontrib>Yang, Haigang</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>AGRICOLA</collection><collection>AGRICOLA - Academic</collection><jtitle>Environmental science and pollution research international</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhou, Yibo</au><au>Yang, Baogui</au><au>Liu, Shuaigang</au><au>Tian, Xichun</au><au>Yang, Haigang</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Mechanical properties of cemented tailings backfill with chloride-free antifreeze</atitle><jtitle>Environmental science and pollution research international</jtitle><stitle>Environ Sci Pollut Res</stitle><addtitle>Environ Sci Pollut Res Int</addtitle><date>2023-03-01</date><risdate>2023</risdate><volume>30</volume><issue>13</issue><spage>36350</spage><epage>36363</epage><pages>36350-36363</pages><issn>1614-7499</issn><eissn>1614-7499</eissn><abstract>In cold regions with sub-zero surface temperatures, the addition of chloride-free antifreeze (Ca(NO
2
)
2
, Ca(NO
3
)
2
, and CO(NH
2
)
2
) is an inexpensive method to prevent pipeline freezing during cemented tailings backfill (CTB) transport. However, the curing temperature of CTB after reaching the mine cavity tends to be above-zero. The mechanical properties of CTB with a chloride-free antifreeze in above-zero environments have not been investigated. Therefore, this study aimed at thoroughly exploring the effect of chloride-free antifreeze on the mechanical properties of CTB in above-zero environments. CTB samples with chloride-free antifreeze (Ca(NO
2
)
2
, Ca(NO
3
)
2
, and CO(NH
2
)
2
) and different concentrations (0, 5, 15, and 35 g/L) were prepared and cured in different above-zero environments (2, 20, and 35 °C). The unconfined compressive strength tests were performed after 1, 3, 7, and 28 days. In addition, a series of microstructural analyses and monitoring experiments were conducted. The results indicated that the addition of a 15-g/L chloride-free antifreeze decreased the strength of CTB curing at 20 °C after 1, 3, and 7 days and increased the strength after 28 days. Moreover, the CTB strength evolution with the curing time depends on the chloride-free antifreeze concentration and above-zero curing temperature. According to the TG/DTG analyses results, calcium ions had a promoting effect on the carbonation of calcium hydroxide. The findings of this study can provide a guideline for the application of chloride-free antifreeze on the mine backfill in cold regions.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><pmid>36547842</pmid><doi>10.1007/s11356-022-24924-3</doi><tpages>14</tpages></addata></record> |
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| language | eng |
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| source | MEDLINE; SpringerLink Journals - AutoHoldings |
| subjects | Aquatic Pollution Atmospheric Protection/Air Quality Control/Air Pollution calcium calcium hydroxide carbonation Chlorides cold compression strength Compressive Strength Earth and Environmental Science Ecotoxicology Environment Environmental Chemistry Environmental Health evolution Freezing guidelines Nitrogen Dioxide Research Article Temperature Waste Water Technology Water Management Water Pollution Control |
| title | Mechanical properties of cemented tailings backfill with chloride-free antifreeze |
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