Accelerate Thaumasite Formation in Cement-Limestone Powder Paste by Internal Adding Method

Chang Cheng Li; Yan Yao; Ling Wang

doi:10.4028/www.scientific.net/AMR.250-253.22

Paper Titles

Energy Absorption of Spruce Wood under Three Kinds of Quasi-Static Compression Conditions
p.3

Experiment on the Cement-Tailings Ratio of Cemented Filling with Tailings of Daye Iron Mine and Research on Hydration Reaction Mechanism
p.10

Experimental Study on the Dynamic Compressive Mechanical Properties of Concrete
p.17

Accelerate Thaumasite Formation in Cement-Limestone Powder Paste by Internal Adding Method
p.22

Experimental Research on the Self-Healing Performance of Micro-Cracks in Concrete Bridge
p.28

Mechanical Characteristics of Concrete Exposed to External Flexural Load, De-Icing Salt and Freeze-Thaw Cycles
p.33

Effectiveness and Mechanism of Fly Ash in Inhibiting Alkali-Silica Reaction of Sandstone
p.40

Lime Brust of Sintering Bricks of Purple Sandy Shale: the Effect of Limestone Particle Size
p.46

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 250-253Accelerate Thaumasite Formation in...

Accelerate Thaumasite Formation in Cement-Limestone Powder Paste by Internal Adding Method

Abstract:

Cement-limestone powder pastes added with 10% magnesium sulfate, sodium sulfate, and calcium sulfate respectively were stored in water at (5±2) °C to accelerate thaumasite formation. The pastes were inspected visually at intervals. And the formation of thaumasite was identified and confirmed by X-ray diffraction (XRD), infrared spectroscopy (IR), and nuclear magnetic resonance spectroscopy (NMR). The results show that internal adding sulfate in cement-limestone powder paste is an efficient way to accelerate thaumasite formation, and the accelerated effect is magnesium sulfate> sodium sulfate> calcium sulfate. Cement-limestone paste containing 10% magnesium sulfate totally turns into grey-white mushy materials after 6 months immersion, and products are mainly thaumasite and gypsum. In addition, the amount of thaumasite increases along with time of internal sulfate attack in 15 months. XRD, IR, and NMR are powerful and reliable tools for identification of thaumasite in cement-based materials.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Advanced Materials Research (Volumes 250-253)

Pages:

22-27

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.250-253.22

Citation:

Cite this paper

Online since:

May 2011

Authors:

Chang Cheng Li, Yan Yao, Ling Wang

Keywords:

Cement-Based Material, Internal Adding Method, Limestone Powder, Sulfate Attack, Thaumasite Formation

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] J. Skibsted, S. Rasmussen, D. Herfort and H.J. Jakobsen: Cem. Concr. Res Vol. 25 (2003), p.823

Google Scholar

[2] P.Hagelia, R.G. Sibbick: Mater.Charact Vol. 60 (2009), p.686

Google Scholar

[3] N.J. Crammond: Cem. Concr. Compos Vol. 25 (2003), p.809

Google Scholar

[4] B.G Ma, X.J. Gao, E.A. Byars and Q.Z. Zhou: Cem. Concr. Res Vol. 36 (2006), p.716

Google Scholar

[5] J. Aguilera, M.T. Blanco Varela, and T. Vázquez: Cem. Concr. Res Vol. 31 (2001), p.1163

Google Scholar

[6] J. Bensted: Cem Vol. 85(1988), pp.3-10

Google Scholar

[7] K. Tosun, B. Felekoğlu, B. Baradan, and I. A. Altun: Constr.Build. Mater Vol. 23 (2009), p.2534

Google Scholar

[8] M. Romer, L. Holzerl and M. Pfiffner: Cem. Concr. Compos Vol. 25 (2003), p.1111

Google Scholar

[9] P.Pipilikaki, D.Papageorgiou, M. Dimitroula, E. Chaniotakisand M. Katsioti: Constr.Build. Mater Vol. 23 (2009), p.2259

Google Scholar

[10] J. Barnett, D. E. Macphee, E. E. Lachowshi and N.J. Crammond: Cem. Concr. Res Vol.32 (2002), p.719

Google Scholar

[11] J. Skibsted, L. Hjorth and H.J. Jakobsen: Adv. Cem. Res Vol. 7 (1995), p.69

Google Scholar

[12] E.F. Irassar, V.L. Bonavetti and M. Gonza´lez: Cem. Concr. Res Vol. 33 (2003), p.31

Google Scholar