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Ultra-stable anti-washout cement grout achieved by super water absorbing villus-like nanocomposite hydrogel
Guo, Hongda; Tang, Ziqing; Liu, Qing; Xu, Jianyu; Wang, Miaomiao; Liang, Rui; Sun, Guoxing
2021-09-27
Source PublicationConstruction and Building Materials
ISSN0950-0618
Volume301
Abstract

In this paper, super absorbent polymer (SAP) is used as anti-washout admixtures (AWA) to investigate the influence of the swelling property, salt resistance swelling property and chemical interaction of SAP on the washout of underwater cement grout. Herein, a new villus-like nanocomposite hydrogel (V-NC gel), one self-synthesized new SAP, were used to fabricate underwater cement grout with ultra-stable anti-washout performance. Incorporating V-NC gel can significantly reduce underwater cement grout washout loss from 91.05% to 62.22%, which was much better than those of adding commercial water absorbent polyacrylate sodium (PAAS). The villus-like structure of V-NC gel ensured super water absorbing performance in the cement environment, leading to strengthening the anti-washout performance. Further, the –COO group (from V-NC gel) could chelate with Ca (released from cement hydration) to form a cross-linking network, being conducive to gluing the cement particles, thereby enhancing the anti-washout performance of the cement grout.

KeywordAnti-washout Cement Grout Villus-like Nanocomposite Hydrogel Washout Loss Slump Flow Bleeding Capacity Chemical Interaction
DOI10.1016/j.conbuildmat.2021.124035
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaConstruction & Building Technology ; Engineering ; Materials Science
WOS SubjectConstruction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary
WOS IDWOS:000687391200006
PublisherELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
Scopus ID2-s2.0-85109069145
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Cited Times [WOS]:1   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorLiang, Rui; Sun, Guoxing
AffiliationJoint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau SAR, China
First Author AffilicationINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding Author AffilicationINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Recommended Citation
GB/T 7714
Guo, Hongda,Tang, Ziqing,Liu, Qing,et al. Ultra-stable anti-washout cement grout achieved by super water absorbing villus-like nanocomposite hydrogel[J]. Construction and Building Materials,2021,301.
APA Guo, Hongda,Tang, Ziqing,Liu, Qing,Xu, Jianyu,Wang, Miaomiao,Liang, Rui,&Sun, Guoxing.(2021).Ultra-stable anti-washout cement grout achieved by super water absorbing villus-like nanocomposite hydrogel.Construction and Building Materials,301.
MLA Guo, Hongda,et al."Ultra-stable anti-washout cement grout achieved by super water absorbing villus-like nanocomposite hydrogel".Construction and Building Materials 301(2021).
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