Micro Experimental Research on Cement Stone under Sulfate Erosion

Abstract:

Article Preview

In this article, micro investigation of the cement stone under sulfate erosion is carried out by using SEM (Scanning Electron Microscope). The XRD method is also employed to semi-quantitatively analyze the erosion product. The cement stones whose water-cement is 0.45, 0.55, 0.65, respectively, immersed in sulfate solution whose sulfate ion concentrations is 0%, 3%, 4%, 5%, 6%. After different immersion time of 24 days, 45 days and 60 days, the microstructure of samples is detect by the SEM. The energy-dispersive X-ray analysis (EDX) is taken to determine the general elements in samples. The XRD method is employed to semi-quantitatively determine the weight percents of ettringite and gypsum in cement stone samples. Through comparative analysis, it tries to point out how the sulfate ion and water-cement ratio will affect the erosion products.

Info:

Periodical:

Advanced Materials Research (Volumes 588-589)

Edited by:

Lawrence Lim

Pages:

95-103

Citation:

J. Zhu et al., "Micro Experimental Research on Cement Stone under Sulfate Erosion", Advanced Materials Research, Vols. 588-589, pp. 95-103, 2012

Online since:

November 2012

Export:

Price:

$41.00

[1] Fan Zili, Ma Yingjie, Ma Yingjun. Slinized soils and their improvement and utilization in west China. Arid Zone Research, 2001, 18 (3)1-6. (in Chinese).

[2] Abdelmalek Bouazza, Stephan Jefferis, Thaveesak Vangpaisal. Investigation of the effects and degree of calcium exchange on the atterberg limits and swelling of geosynthetic clay liners when subjected to wet-dry cycles. Geotextiles and Geomembranes, 2007, 25(3)170-185.

DOI: https://doi.org/10.1016/j.geotexmem.2006.11.001

[3] M. C. Lewis. Heat curing and delayed ettringite formation in concretes. Imperial College, The University of London, London, Thesis, (1996).

[4] W. Prince, M. Espangne, P.C. Aitcin. Ettringite formation: A crucial step in cement superplasticizer compatibility. Cement and Concrete Research, 2003, 33(5)635-641.

DOI: https://doi.org/10.1016/s0008-8846(02)01042-6

[5] J.K. Chen, M.Q. Jiang. Long-term evolution of delayed ettringite and gypsum in Portland cement mortars under sulfate erosion. Construction & Building Materials, 2009, 23(2)812-816.

DOI: https://doi.org/10.1016/j.conbuildmat.2008.03.002

[6] S. Diamond. Delayed ettringite formation processes and problems. Cement and Concrete Composites, 1996, 18(3)205-215.

DOI: https://doi.org/10.1016/0958-9465(96)00017-0

[7] D. Planel, J. Sercombe, P. Le Bescop, F. Adenot, J.M. Torrenti. Long-term performance of cement paste during combined calcium leaching-sulfate attack: kinetics and size effect. Cement and Concrete Research, 2006, 36(1)137-143.

DOI: https://doi.org/10.1016/j.cemconres.2004.07.039

[8] P. Pipilikaki, D. Papageorgiou, M. Dimitroula, E. Chaniotakis, M. Katsioti. Microstructure changes in mortars attacked by sulfates at 50C. Construction and Building Materials, 2009, 23(6)2259-2264.

DOI: https://doi.org/10.1016/j.conbuildmat.2008.11.019

[9] M.H. Zhang, M.Q. Jiang, J.K. Chen. Variation of flexural strength of cement mortar attacked by sulphate ions. Engineering Fracture Mechanics, 2008, 75(17)4948-4957.

DOI: https://doi.org/10.1016/j.engfracmech.2008.06.023

[10] Jue Zhu, Chao Sun, Zhen Qian, Jiangying Chen. The spalling strength of ultra-fiber reinforced cement mortar. Engineering Failure Analysis, DOI: 10. 1016/j. engfailanal. 2011. 05. 001.

DOI: https://doi.org/10.1016/j.engfailanal.2011.05.001

[11] P. Chindaprasirt, P. Kanchanda, A. Sathonsaowaphak, H.T. Cao. Sulfate resistance of blended cements containing fly ash and rice husk ash. Construction and Building Materials, 2007, 21(6)1356-1361.

DOI: https://doi.org/10.1016/j.conbuildmat.2005.10.005

[12] S.T. Lee, H.Y. Moon, R.N. Swamy. Sulfate attack and role of silica fume in resisting strength loss. Cement & Concrete Composites, 2005, 27(1)65-76.

DOI: https://doi.org/10.1016/j.cemconcomp.2003.11.003

[13] D.Y. Yang, J.K. Chen, M. Xu, W. Sun, J. Ye. Study on resistance to chamical attack of concrete used in Huaihe river channel project. China Concrete and Cement Products, 2003, 129(1)15-18. (in Chinese).

[14] P. Gospodinov, R. Kazandjiev, M. Mironova. The effect of sulfate ion diffusion on the structure of cement stone. Cement and Concrete Composites, l996, 18(6)401-407.

DOI: https://doi.org/10.1016/s0958-9465(96)00032-7

[15] M.K. Mironova, P.N. Gospodinov, R.F. Kazandjiev. The effect of liquid push out of the material capillaries under sulfate ion diffusion in cement composites. Cement and Concrete Research, 2002, 32(1) 9-15.

DOI: https://doi.org/10.1016/s0008-8846(01)00621-4

[16] R.S. Gallop and H.F.W. Taylor. Microstructural and microanalytical studies of sulfate attack. IV. Reactions of a slag cement paste with sodium and magnesium sulfate solutions, Cement and Concrete Research, 1996, 26(7)1013-1028.

DOI: https://doi.org/10.1016/0008-8846(96)00089-0

[17] Eshmaiel Ganjiana, Homayoon Sadeghi Pouya. Effect of magnesium and sulfate ions on durability of silica fume blended mixes exposed to the seawater tidal zone. Cement and Concrete Research, 2005, 35: 1332–1343.

DOI: https://doi.org/10.1016/j.cemconres.2004.09.028

[18] F. Girardi, W. Vaona, R. Di Maggio. Resistance of different types of concretes to cyclic sulfuric acid and sodium sulfate attack. Cement & Concrete Composites, 2010, 32: 595-602.

DOI: https://doi.org/10.1016/j.cemconcomp.2010.07.002

[19] Gu Kunpeng, Wang Chengqi. Study status on concrete sulfate attack. Guangdong Building Materials, 2010, 26(8)31-34.

[20] Wu Zongdao. Microtopography of ettringite. China Building Materials Science & Technology, 1995, 4(4)9-14.