Article(id=1322612326314913871, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322612265061306700, articleNumber=null, orderNo=null, doi=10.14062/j.issn.0454-5648.20190645, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1569081600000, receivedDateStr=2019-09-22, revisedDate=1574784000000, revisedDateStr=2019-11-27, acceptedDate=null, acceptedDateStr=null, onlineDate=1793264951541, onlineDateStr=2026-10-29, pubDate=1589904000000, pubDateStr=2020-05-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793264951541, onlineIssueDateStr=2026-10-29, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793264951541, creator=13701087609, updateTime=1793264951541, updator=13701087609, issue=Issue{id=1322612265061306700, tenantId=1146029695717560320, journalId=1263187385517883426, year='2020', volume='48', issue='5', pageStart='615', pageEnd='786', issueExtLink='null', onlineDate='null', pubDate='1589904000000', pubDateStr='2020-05-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793264936938, creator='13701087609', updateTime=1793276961694, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322662700602208333, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322612265061306700, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322662700602208334, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322612265061306700, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=622, endPage=631, ext={EN=ArticleExt(id=1322612326541406288, articleId=1322612326314913871, tenantId=1146029695717560320, journalId=1263187385517883426, language=EN, title=Effect of Chemical Admixtures on Rheological Properties of Mortars, columnId=null, journalTitle=Journal of the Chinese Ceramic Society, columnName=null, runingTitle=null, highlight=null, articleAbstract=

Effects of water-binder ratio, polycarboxylate superplasticizers (PCEs) with different molecular structures, super-absorbent polymer (SAP) and an anionic viscosity modifying agent (VMA) on the rheological properties of mortar were investigated. The results show that increasing the water-binder ratio simultaneously reduces the yield stress and plastic viscosity of mortar and increases the fluidity retention capacity. The addition of PCE reduces the yield stress of mortar and the steric hindrance induced by the side carbon chains is one of the main reasons for the dispersion effect of PCE. The side carbon chains inhibit the adsorption of PCE on the surface of cement particles. Increasing the length of the side chains of PCE has little effect on the initial rheology. SAP increases the yield stress and plastic viscosity of mortar by reducing its free water content, and its action mechanism is the same as reducing the water-binder ratio. VMA improves the yield stress of mortar due to the bridging effect at low dosages, but has little effect on the plastic viscosity. At high dosages, the bridging effect of VMA weakens but the viscosity of liquid phase greatly increases, thus decreasing the enhanced effect on the yield stress of mortar and greatly increasing the plastic viscosity of mortar.

, authors=Chaoyang ZHANG, Jianwei YU, Xiangming KONG, Yi CAI, authorsList=Chaoyang ZHANG, Jianwei YU, Xiangming KONG, Yi CAI, authorCompany=null, correspAuthors=Xiangming KONG, authorNote=

ZHANG Chaoyang (1994-), male, Doctoral candidate. E-mail:

, correspAuthorsNote=
KONG Xiangming (1974-), male, Ph.D., Associate Professor. E-mail:
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研究了水胶比、聚羧酸减水剂(PCE)分子结构、高吸水性树脂(SAP)及阴离子型黏度调节剂(VMA)对砂浆流变性能的影响。结果表明:提升水胶比能降低砂浆的屈服应力和塑性黏度并提高其流动度保持能力。PCE的掺入可显著降低砂浆的屈服应力且PCE侧链的空间位阻作用是一个主要原因。侧链抑制PCE在水泥颗粒表面的吸附。增加PCE侧链长度对水泥浆初始流变性影响较小。SAP通过降低砂浆中自由水含量来提高其屈服应力和塑性黏度,其作用机理与降低水胶比的作用相似。VMA在低掺量下通过桥接作用提高砂浆的屈服应力,但对塑性黏度影响不大;高掺量下,VMA的桥接作用减弱却能大幅提高液相的黏度,因而对砂浆屈服应力的提升作用减弱而大幅提高其塑性黏度。

, authors=张朝阳, 喻建伟, 孔祥明, 蔡熠, authorsList=张朝阳, 喻建伟, 孔祥明, 蔡熠, authorCompany=null, correspAuthors=孔祥明, authorNote=

张朝阳(1994—),男,博士。

, correspAuthorsNote=
孔祥明(1974—),男,副教授。
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张朝阳(1994—),男,博士。

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张朝阳(1994—),男,博士。

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化学外加剂对砂浆流变性能的影响
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张朝阳 , 喻建伟 , 孔祥明 , 蔡熠
硅酸盐学报 | 2020,48(5): 622-631
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硅酸盐学报 | 2020 , 48 (5) : 622 -631
化学外加剂对砂浆流变性能的影响
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张朝阳 , 喻建伟, 孔祥明 , 蔡熠
作者信息
  • 清华大学土木工程系建筑材料所,北京 100084
通讯作者:
孔祥明(1974—),男,副教授。
作者简介:

张朝阳(1994—),男,博士。

Effect of Chemical Admixtures on Rheological Properties of Mortars
Chaoyang ZHANG , Jianwei YU, Xiangming KONG , Yi CAI
Affiliations
  • Institute of Building Materials, Department of Civil Engineering, Tsinghua University, Beijing 100084, China
  • Corresponding Author:
    KONG Xiangming (1974-), male, Ph.D., Associate Professor. E-mail:

    ZHANG Chaoyang (1994-), male, Doctoral candidate. E-mail:

出版时间: 2020-05-20 doi: 10.14062/j.issn.0454-5648.20190645
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研究了水胶比、聚羧酸减水剂(PCE)分子结构、高吸水性树脂(SAP)及阴离子型黏度调节剂(VMA)对砂浆流变性能的影响。结果表明:提升水胶比能降低砂浆的屈服应力和塑性黏度并提高其流动度保持能力。PCE的掺入可显著降低砂浆的屈服应力且PCE侧链的空间位阻作用是一个主要原因。侧链抑制PCE在水泥颗粒表面的吸附。增加PCE侧链长度对水泥浆初始流变性影响较小。SAP通过降低砂浆中自由水含量来提高其屈服应力和塑性黏度,其作用机理与降低水胶比的作用相似。VMA在低掺量下通过桥接作用提高砂浆的屈服应力,但对塑性黏度影响不大;高掺量下,VMA的桥接作用减弱却能大幅提高液相的黏度,因而对砂浆屈服应力的提升作用减弱而大幅提高其塑性黏度。

砂浆  /  流变性能  /  水胶比  /  聚羧酸减水剂  /  黏度调节剂

Effects of water-binder ratio, polycarboxylate superplasticizers (PCEs) with different molecular structures, super-absorbent polymer (SAP) and an anionic viscosity modifying agent (VMA) on the rheological properties of mortar were investigated. The results show that increasing the water-binder ratio simultaneously reduces the yield stress and plastic viscosity of mortar and increases the fluidity retention capacity. The addition of PCE reduces the yield stress of mortar and the steric hindrance induced by the side carbon chains is one of the main reasons for the dispersion effect of PCE. The side carbon chains inhibit the adsorption of PCE on the surface of cement particles. Increasing the length of the side chains of PCE has little effect on the initial rheology. SAP increases the yield stress and plastic viscosity of mortar by reducing its free water content, and its action mechanism is the same as reducing the water-binder ratio. VMA improves the yield stress of mortar due to the bridging effect at low dosages, but has little effect on the plastic viscosity. At high dosages, the bridging effect of VMA weakens but the viscosity of liquid phase greatly increases, thus decreasing the enhanced effect on the yield stress of mortar and greatly increasing the plastic viscosity of mortar.

mortar  /  rheological property  /  water-to-binder ratio  /  polycarboxylate superplasticizers  /  viscosity modifying agent
张朝阳, 喻建伟, 孔祥明, 蔡熠. 化学外加剂对砂浆流变性能的影响. 硅酸盐学报, 2020 , 48 (5) : 622 -631 . DOI: 10.14062/j.issn.0454-5648.20190645
Chaoyang ZHANG, Jianwei YU, Xiangming KONG, Yi CAI. Effect of Chemical Admixtures on Rheological Properties of Mortars[J]. Journal of the Chinese Ceramic Society, 2020 , 48 (5) : 622 -631 . DOI: 10.14062/j.issn.0454-5648.20190645
  • 科技部重点研发计划(2017YFB0310002)
  • 国家自然科学基金面试项目(51778333)
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2020年第48卷第5期
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doi: 10.14062/j.issn.0454-5648.20190645
  • 接收时间:2019-09-22
  • 首发时间:2026-10-29
  • 出版时间:2020-05-20
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  • 收稿日期:2019-09-22
  • 修回日期:2019-11-27
基金
科技部重点研发计划(2017YFB0310002)
国家自然科学基金面试项目(51778333)
作者信息
    清华大学土木工程系建筑材料所,北京 100084

通讯作者:

孔祥明(1974—),男,副教授。
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2种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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