Influence of superplasticizer dosage on the viscosity of cement paste with low water-binder ratio
•Underlying mechanism of SP dosage on viscosity of cement pastes is proposed.•A high concentration of un-adsorbed SP is found in interstitial solution of the paste.•Hydroclustering and SP entanglements could be induced in paste with low w/b. In this paper, the influence and underlying mechanism of s...
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| Veröffentlicht in: | Construction & building materials 2017-09, Vol.149, p.359-366 |
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| creator | Liu, Jianzhong Wang, Kejin Zhang, Qianqian Han, Fangyu Sha, Jianfang Liu, Jiaping |
| description | •Underlying mechanism of SP dosage on viscosity of cement pastes is proposed.•A high concentration of un-adsorbed SP is found in interstitial solution of the paste.•Hydroclustering and SP entanglements could be induced in paste with low w/b.
In this paper, the influence and underlying mechanism of superplasticizers (SP) dosage on the viscosity of cement pastes with four water-binder ratio (w/b) were investigated. The results showed that apparent viscosity of the pastes with w/b of 0.24 and 0.32 decreased with SP dosage. Whereas, it is reverse for cement paste with w/b of 0.20 and 0.16. The addition of SP increased the packing density and the water film thickness of pastes with a w/b of 0.32 and 0.24. However, the increase of SP dosage had little effect on the packing density and the water film thickness of pastes with a very low w/b (0.16). For the cement pastes with a very low w/b (e.g., 0.16), the small spaces between the binder particles and the high concentration of the un-adsorbed SP in the interstitial solution may be the primary factors responsible for the increase in viscosity of the pastes. |
| doi_str_mv | 10.1016/j.conbuildmat.2017.05.145 |
| format | Article |
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In this paper, the influence and underlying mechanism of superplasticizers (SP) dosage on the viscosity of cement pastes with four water-binder ratio (w/b) were investigated. The results showed that apparent viscosity of the pastes with w/b of 0.24 and 0.32 decreased with SP dosage. Whereas, it is reverse for cement paste with w/b of 0.20 and 0.16. The addition of SP increased the packing density and the water film thickness of pastes with a w/b of 0.32 and 0.24. However, the increase of SP dosage had little effect on the packing density and the water film thickness of pastes with a very low w/b (0.16). For the cement pastes with a very low w/b (e.g., 0.16), the small spaces between the binder particles and the high concentration of the un-adsorbed SP in the interstitial solution may be the primary factors responsible for the increase in viscosity of the pastes.</description><identifier>ISSN: 0950-0618</identifier><identifier>EISSN: 1879-0526</identifier><identifier>DOI: 10.1016/j.conbuildmat.2017.05.145</identifier><language>eng</language><publisher>Elsevier Ltd</publisher><subject>Adsorption ; Apparent viscosity ; Cements (Building materials) ; Interstitial solution ; Mechanical properties ; Superplasticizer ; Superplasticizers ; Viscosity ; Water film thickness ; Water-cement ratio</subject><ispartof>Construction & building materials, 2017-09, Vol.149, p.359-366</ispartof><rights>2017 Elsevier Ltd</rights><rights>COPYRIGHT 2017 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c463t-eb5849e351faf2548a0d751f41e2ab47716936327fc6bada5a555ee3786114af3</citedby><cites>FETCH-LOGICAL-c463t-eb5849e351faf2548a0d751f41e2ab47716936327fc6bada5a555ee3786114af3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.conbuildmat.2017.05.145$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,777,781,3537,27905,27906,45976</link.rule.ids></links><search><creatorcontrib>Liu, Jianzhong</creatorcontrib><creatorcontrib>Wang, Kejin</creatorcontrib><creatorcontrib>Zhang, Qianqian</creatorcontrib><creatorcontrib>Han, Fangyu</creatorcontrib><creatorcontrib>Sha, Jianfang</creatorcontrib><creatorcontrib>Liu, Jiaping</creatorcontrib><title>Influence of superplasticizer dosage on the viscosity of cement paste with low water-binder ratio</title><title>Construction & building materials</title><description>•Underlying mechanism of SP dosage on viscosity of cement pastes is proposed.•A high concentration of un-adsorbed SP is found in interstitial solution of the paste.•Hydroclustering and SP entanglements could be induced in paste with low w/b.
In this paper, the influence and underlying mechanism of superplasticizers (SP) dosage on the viscosity of cement pastes with four water-binder ratio (w/b) were investigated. The results showed that apparent viscosity of the pastes with w/b of 0.24 and 0.32 decreased with SP dosage. Whereas, it is reverse for cement paste with w/b of 0.20 and 0.16. The addition of SP increased the packing density and the water film thickness of pastes with a w/b of 0.32 and 0.24. However, the increase of SP dosage had little effect on the packing density and the water film thickness of pastes with a very low w/b (0.16). For the cement pastes with a very low w/b (e.g., 0.16), the small spaces between the binder particles and the high concentration of the un-adsorbed SP in the interstitial solution may be the primary factors responsible for the increase in viscosity of the pastes.</description><subject>Adsorption</subject><subject>Apparent viscosity</subject><subject>Cements (Building materials)</subject><subject>Interstitial solution</subject><subject>Mechanical properties</subject><subject>Superplasticizer</subject><subject>Superplasticizers</subject><subject>Viscosity</subject><subject>Water film thickness</subject><subject>Water-cement ratio</subject><issn>0950-0618</issn><issn>1879-0526</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>N95</sourceid><recordid>eNqNkU1r3DAQhkVooNuk_0Gh19qVbEu2j2HpRyDQS3IWY3nk1WJLiyRnSX99tWwPCeyhCEZo9LyD0EPIHWclZ1x-25fau2G187hAKivG25KJkjfiimx41_YFE5X8QDasF6xgkncfyacY94wxWclqQ-DBmXlFp5F6Q-N6wHCYISar7R8MdPQRpnzlaNohfbFR-2jT64nVuKBL9JBhpEebdnT2R3qEhKEYrBtzOkCy_pZcG5gjfv6335DnH9-ftr-Kx98_H7b3j4VuZJ0KHETX9FgLbsBUoumAjW0-NBwrGJq25bKvZV21RssBRhAghECs205y3oCpb8iX89wJZlTWGZ8C6CU_Wd0LxkXf9azOVHGBmtBhgNk7NDa33_HlBT6vERerLwa-vgkMa7QOYy7RTrsUJ1hjfI_3Z1wHH2NAow7BLhBeFWfqZFjt1RvD6mRYMaGy4ZzdnrOYv_XFYlBR25PK0QbUSY3e_seUv5p5tSc</recordid><startdate>20170915</startdate><enddate>20170915</enddate><creator>Liu, Jianzhong</creator><creator>Wang, Kejin</creator><creator>Zhang, Qianqian</creator><creator>Han, Fangyu</creator><creator>Sha, Jianfang</creator><creator>Liu, Jiaping</creator><general>Elsevier Ltd</general><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>N95</scope><scope>XI7</scope></search><sort><creationdate>20170915</creationdate><title>Influence of superplasticizer dosage on the viscosity of cement paste with low water-binder ratio</title><author>Liu, Jianzhong ; Wang, Kejin ; Zhang, Qianqian ; Han, Fangyu ; Sha, Jianfang ; Liu, Jiaping</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c463t-eb5849e351faf2548a0d751f41e2ab47716936327fc6bada5a555ee3786114af3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Adsorption</topic><topic>Apparent viscosity</topic><topic>Cements (Building materials)</topic><topic>Interstitial solution</topic><topic>Mechanical properties</topic><topic>Superplasticizer</topic><topic>Superplasticizers</topic><topic>Viscosity</topic><topic>Water film thickness</topic><topic>Water-cement ratio</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Liu, Jianzhong</creatorcontrib><creatorcontrib>Wang, Kejin</creatorcontrib><creatorcontrib>Zhang, Qianqian</creatorcontrib><creatorcontrib>Han, Fangyu</creatorcontrib><creatorcontrib>Sha, Jianfang</creatorcontrib><creatorcontrib>Liu, Jiaping</creatorcontrib><collection>CrossRef</collection><collection>Gale Business: Insights</collection><collection>Business Insights: Essentials</collection><jtitle>Construction & building materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Liu, Jianzhong</au><au>Wang, Kejin</au><au>Zhang, Qianqian</au><au>Han, Fangyu</au><au>Sha, Jianfang</au><au>Liu, Jiaping</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Influence of superplasticizer dosage on the viscosity of cement paste with low water-binder ratio</atitle><jtitle>Construction & building materials</jtitle><date>2017-09-15</date><risdate>2017</risdate><volume>149</volume><spage>359</spage><epage>366</epage><pages>359-366</pages><issn>0950-0618</issn><eissn>1879-0526</eissn><abstract>•Underlying mechanism of SP dosage on viscosity of cement pastes is proposed.•A high concentration of un-adsorbed SP is found in interstitial solution of the paste.•Hydroclustering and SP entanglements could be induced in paste with low w/b.
In this paper, the influence and underlying mechanism of superplasticizers (SP) dosage on the viscosity of cement pastes with four water-binder ratio (w/b) were investigated. The results showed that apparent viscosity of the pastes with w/b of 0.24 and 0.32 decreased with SP dosage. Whereas, it is reverse for cement paste with w/b of 0.20 and 0.16. The addition of SP increased the packing density and the water film thickness of pastes with a w/b of 0.32 and 0.24. However, the increase of SP dosage had little effect on the packing density and the water film thickness of pastes with a very low w/b (0.16). For the cement pastes with a very low w/b (e.g., 0.16), the small spaces between the binder particles and the high concentration of the un-adsorbed SP in the interstitial solution may be the primary factors responsible for the increase in viscosity of the pastes.</abstract><pub>Elsevier Ltd</pub><doi>10.1016/j.conbuildmat.2017.05.145</doi><tpages>8</tpages></addata></record> |
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| ispartof | Construction & building materials, 2017-09, Vol.149, p.359-366 |
| issn | 0950-0618 1879-0526 |
| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Adsorption Apparent viscosity Cements (Building materials) Interstitial solution Mechanical properties Superplasticizer Superplasticizers Viscosity Water film thickness Water-cement ratio |
| title | Influence of superplasticizer dosage on the viscosity of cement paste with low water-binder ratio |
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