UM
Affiliated with RCfalse
Status已發表Published
Impact properties of geopolymer based extrudates incorporated with fly ash and PVA short fiber
Yunsheng Z.2; Wei S.2; Zongjin L.1; Xiangming Z.1; Eddie1; Chungkong C.1
2008-03-01
Source PublicationConstruction and Building Materials
ISSN09500618
Volume22Issue:3Pages:370-383
AbstractA PVA short fiber reinforced fly ash-geopolymer composites manufactured by extrusion technique (SFRGC) is developed in this study. The effects of fly ash content and fiber volume fraction on the rheological and impact behaviors of SFRGC are systemically investigated. Freeze-thaw cycles and sulfuric acid attack tests are also employed to study the durability of SFRGC. The experimental results show that for normally curing SFRGC, the addition of PVA fiber increases greatly the ductility of SFRGC, especially in the case of high volume fraction of fiber, resulting in the change of impact failure mode from brittle pattern to ductile one. As a result, a great increase in the impact toughness is seen in SFRGC with high fiber content. Comparatively the addition of fly ash exhibits obvious influence on the rhelogical and impact behaviors. The spherical shape of fly ash can greatly improve the extrudability of fresh SFRGC pastes. SFRGC without or with low percentage of fly ash possesses very high impact strength and stiffness. However, when too much fly ash is incorporated, the impact resistance of SFRGC is reduced rapidly. For SFRGC undergone freeze-thaw cycles and 1 month of sulfuric acid solution attack, only 5% or less of loss in impact strength is observed. The corresponding microstructure and failure mechanism are also explored by Laser particle size analysis (LSA), X-ray diffraction analysis (XRD), Scanning Electron Microscope (SEM), and Mercury intrusion porosimetry (MIP) techniques. © 2006 Elsevier Ltd. All rights reserved.
KeywordDurability Extrusion technique Fly ash Geopolymeric cement Impact properties Microstructure PVA short fiber Rheological behavior
DOI10.1016/j.conbuildmat.2006.08.006
URLView the original
Language英語English
Fulltext Access
Citation statistics
Cited Times [WOS]:153   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.Hong Kong University of Science and Technology
2.Southeast University
Recommended Citation
GB/T 7714
Yunsheng Z.,Wei S.,Zongjin L.,et al. Impact properties of geopolymer based extrudates incorporated with fly ash and PVA short fiber[J]. Construction and Building Materials,2008,22(3):370-383.
APA Yunsheng Z.,Wei S.,Zongjin L.,Xiangming Z.,Eddie,&Chungkong C..(2008).Impact properties of geopolymer based extrudates incorporated with fly ash and PVA short fiber.Construction and Building Materials,22(3),370-383.
MLA Yunsheng Z.,et al."Impact properties of geopolymer based extrudates incorporated with fly ash and PVA short fiber".Construction and Building Materials 22.3(2008):370-383.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Yunsheng Z.]'s Articles
[Wei S.]'s Articles
[Zongjin L.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Yunsheng Z.]'s Articles
[Wei S.]'s Articles
[Zongjin L.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Yunsheng Z.]'s Articles
[Wei S.]'s Articles
[Zongjin L.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.