A Study on early Shrinkage of Recycled Concrete
The first 3d early shrinkage of recycled concrete from initial setting time with different replacement rates of recycled aggregate was investigated by self-made equipment. The differences between the unimproved recycled concrete and the improved one are observed, in the latter, new mixing method was...
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| Veröffentlicht in: | Key engineering materials 2011-01, Vol.477, p.375-381 |
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| creator | Qian, Xiao Qian Shen, Chong Qian, Kuang Liang |
| description | The first 3d early shrinkage of recycled concrete from initial setting time with different replacement rates of recycled aggregate was investigated by self-made equipment. The differences between the unimproved recycled concrete and the improved one are observed, in the latter, new mixing method was utilized，that is, R-aggregates is coated with slag and nanoCaCO3, and relevant mechanism is analyzed. The results illustrate that early shrinkage of recycled concrete outweighs natural concrete, but there is not a definite link between the replacement rate of recycled aggregate and the early shrinkage. The treatment can effectively reduce the shrinkage of recycled concrete in 10h, but can not have a sustaining effort. Prewet treatment will generate water loss channels accelerating evaporation speed of water in concrete to accelerate shrinkage of concrete. The treatment can block water loss channel by coating, and slag and nanoCaCO3 can change pore structure and humidity in concrete to reduce the first10h early shrinkage. |
| doi_str_mv | 10.4028/www.scientific.net/KEM.477.375 |
| format | Article |
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The differences between the unimproved recycled concrete and the improved one are observed, in the latter, new mixing method was utilized，that is, R-aggregates is coated with slag and nanoCaCO3, and relevant mechanism is analyzed. The results illustrate that early shrinkage of recycled concrete outweighs natural concrete, but there is not a definite link between the replacement rate of recycled aggregate and the early shrinkage. The treatment can effectively reduce the shrinkage of recycled concrete in 10h, but can not have a sustaining effort. Prewet treatment will generate water loss channels accelerating evaporation speed of water in concrete to accelerate shrinkage of concrete. The treatment can block water loss channel by coating, and slag and nanoCaCO3 can change pore structure and humidity in concrete to reduce the first10h early shrinkage.</description><identifier>ISSN: 1013-9826</identifier><identifier>ISSN: 1662-9795</identifier><identifier>EISSN: 1662-9795</identifier><identifier>DOI: 10.4028/www.scientific.net/KEM.477.375</identifier><language>eng</language><publisher>Trans Tech Publications Ltd</publisher><subject>Channels ; Concretes ; Nanomaterials ; Nanostructure ; Recycled ; Shrinkage ; Slags ; Water loss</subject><ispartof>Key engineering materials, 2011-01, Vol.477, p.375-381</ispartof><rights>2011 Trans Tech Publications Ltd</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttps://www.scientific.net/Image/TitleCover/1258?width=600</thumbnail><link.rule.ids>314,777,781,27905,27906</link.rule.ids></links><search><contributor>Li, F</contributor><contributor>Qian, X-Q</contributor><contributor>Li, C-Z</contributor><contributor>Wu, H</contributor><creatorcontrib>Qian, Xiao Qian</creatorcontrib><creatorcontrib>Shen, Chong</creatorcontrib><creatorcontrib>Qian, Kuang Liang</creatorcontrib><title>A Study on early Shrinkage of Recycled Concrete</title><title>Key engineering materials</title><description>The first 3d early shrinkage of recycled concrete from initial setting time with different replacement rates of recycled aggregate was investigated by self-made equipment. The differences between the unimproved recycled concrete and the improved one are observed, in the latter, new mixing method was utilized，that is, R-aggregates is coated with slag and nanoCaCO3, and relevant mechanism is analyzed. The results illustrate that early shrinkage of recycled concrete outweighs natural concrete, but there is not a definite link between the replacement rate of recycled aggregate and the early shrinkage. The treatment can effectively reduce the shrinkage of recycled concrete in 10h, but can not have a sustaining effort. Prewet treatment will generate water loss channels accelerating evaporation speed of water in concrete to accelerate shrinkage of concrete. The treatment can block water loss channel by coating, and slag and nanoCaCO3 can change pore structure and humidity in concrete to reduce the first10h early shrinkage.</description><subject>Channels</subject><subject>Concretes</subject><subject>Nanomaterials</subject><subject>Nanostructure</subject><subject>Recycled</subject><subject>Shrinkage</subject><subject>Slags</subject><subject>Water loss</subject><issn>1013-9826</issn><issn>1662-9795</issn><issn>1662-9795</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNqN0M9LwzAUwPEgCs7p_9CTntolTZukF3EMf-FEcLuHNH1xnV06k5TR_97IBK-e3js8vvA-CF0TnBU4F7PD4ZB53YINrWl1ZiHMXu5fs4LzjPLyBE0IY3la8ao8jTsmNK1Ezs7RhfdbjCkRpJyg2TxZhaEZk94moFw3JquNa-2n-oCkN8k76FF30CSL3moHAS7RmVGdh6vfOUXrh_v14ildvj0-L-bLVNMCh1TVhta5KcpSCYZB1FAL1XCVG6qUpsxoQnmBa8qYMBXLoRK8YDVWwEnDOJ2im2N27_qvAXyQu9Zr6DploR-8rBgVrBRlES9vj5fa9d47MHLv2p1yoyRY_jjJ6CT_nGR0ktFJRicZnWLg7hgITlkfQG_kth-cjd_9N_ENi7R5Yw</recordid><startdate>20110101</startdate><enddate>20110101</enddate><creator>Qian, Xiao Qian</creator><creator>Shen, Chong</creator><creator>Qian, Kuang Liang</creator><general>Trans Tech Publications Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20110101</creationdate><title>A Study on early Shrinkage of Recycled Concrete</title><author>Qian, Xiao Qian ; Shen, Chong ; Qian, Kuang Liang</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c340t-abf3b2f455a860e8beb8ad7a2f3aac36fc13740b3668f962e98746b0ae71d673</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Channels</topic><topic>Concretes</topic><topic>Nanomaterials</topic><topic>Nanostructure</topic><topic>Recycled</topic><topic>Shrinkage</topic><topic>Slags</topic><topic>Water loss</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Qian, Xiao Qian</creatorcontrib><creatorcontrib>Shen, Chong</creatorcontrib><creatorcontrib>Qian, Kuang Liang</creatorcontrib><collection>CrossRef</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Key engineering materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Qian, Xiao Qian</au><au>Shen, Chong</au><au>Qian, Kuang Liang</au><au>Li, F</au><au>Qian, X-Q</au><au>Li, C-Z</au><au>Wu, H</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A Study on early Shrinkage of Recycled Concrete</atitle><jtitle>Key engineering materials</jtitle><date>2011-01-01</date><risdate>2011</risdate><volume>477</volume><spage>375</spage><epage>381</epage><pages>375-381</pages><issn>1013-9826</issn><issn>1662-9795</issn><eissn>1662-9795</eissn><abstract>The first 3d early shrinkage of recycled concrete from initial setting time with different replacement rates of recycled aggregate was investigated by self-made equipment. The differences between the unimproved recycled concrete and the improved one are observed, in the latter, new mixing method was utilized，that is, R-aggregates is coated with slag and nanoCaCO3, and relevant mechanism is analyzed. The results illustrate that early shrinkage of recycled concrete outweighs natural concrete, but there is not a definite link between the replacement rate of recycled aggregate and the early shrinkage. The treatment can effectively reduce the shrinkage of recycled concrete in 10h, but can not have a sustaining effort. Prewet treatment will generate water loss channels accelerating evaporation speed of water in concrete to accelerate shrinkage of concrete. The treatment can block water loss channel by coating, and slag and nanoCaCO3 can change pore structure and humidity in concrete to reduce the first10h early shrinkage.</abstract><pub>Trans Tech Publications Ltd</pub><doi>10.4028/www.scientific.net/KEM.477.375</doi><tpages>7</tpages></addata></record> |
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| subjects | Channels Concretes Nanomaterials Nanostructure Recycled Shrinkage Slags Water loss |
| title | A Study on early Shrinkage of Recycled Concrete |
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