Morphology Difference between the Alkali Activated Cement and Portland Cement Paste on Multi-scale

被引：13

作者：

Shen Weiguo ^{[1
]}

Zhou Mingkai ^{[1
]}

Xiao Liqi ^{[1
]}

Ma Wei ^{[1
]}

Cai Zhi ^{[1
]}

机构：

[1] Wuhan Univ Technol, Minist Educ, Key Lab Silicate Mat Sci & Engn, Wuhan 430070, Peoples R China

来源：

JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION | 2008年 / 23卷 / 06期

关键词：

morphology; alkali activated cement; portland cement; multi-scale; nano particle;

D O I：

10.1007/s11595-007-6923-z

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The features of alkali activated slag(AAS) and portland cement (PC) were observed on multi-scale, the crack and fracture sections were observed with naked eyes, and SEM and AFM were used to study the structure morphology differences between PC and AAS on micrometer to nano meter scale. The experimental results indicated that the AAS paste had soil like fracture texture and it was composed of mainly C-S-H gel but lacks of crystals, and it had a very strong tendency to shrink and crack. AAS paste is much denser and more homogeneous than PC, and on the nano scale C-S-H nano particle in the AAS paste is much smaller and packs Much denser than PC paste.

引用

页码：923 / 926

页数：4

共 20 条

[1] Composition and density of nanoscale calcium-silicate-hydrate in cement
Allen, Andrew J.
Thomas, Jeffrey J.
Jennings, Hamlin M.
[J]. NATURE MATERIALS, 2007, 6 (04) : 311 - 316
[2] [Anonymous], AM CONCR I J
[3] Strength and shrinkage properties of mortar containing a nonstandard high-calcium fly ash
Atis, CD
Kiliç, A
Sevim, UK
[J]. CEMENT AND CONCRETE RESEARCH, 2004, 34 (01) : 99 - 102
[4] Sodium silicate-based, alkali-activated slag mortars Part I. Strength, hydration and microstructure
Brough, AR
Atkinson, A
[J]. CEMENT AND CONCRETE RESEARCH, 2002, 32 (06) : 865 - 879
[5] Cracking tendency of alkali-activated slag concrete subjected to restrained shrinkage
Collins, F
Sanjayan, JG
[J]. CEMENT AND CONCRETE RESEARCH, 2000, 30 (05) : 791 - 798
[6] Effect of pore size distribution on drying shrinkage of alkali-activated slag concrete
Collins, F
Sanjayan, JG
[J]. CEMENT AND CONCRETE RESEARCH, 2000, 30 (09) : 1401 - 1406
[7] COLLINS F, 1993, CEMENT CONCRETE COMP, V23, P345
[8] DAVIDOVITS J, 1987, CONCRETE INT, V29, P23
[9] Glukhovskij V., 1983, Silic. Ind., V10, P197
[10] Colloid model of C-S-H and implications to the problem of creep and shrinkage
Jennings, HM
[J]. MATERIALS AND STRUCTURES, 2004, 37 (265) : 59 - 70

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