Numerical investigation of the external sulfate attack induced expansion response of cement paste by using crystallization pressure

2019 ◽  
Vol 27 (2) ◽  
pp. 025006 ◽  
Author(s):  
Guang-Ji Yin ◽  
Xiao-Bao Zuo ◽  
Xiang-Hua Sun ◽  
Yu-Juan Tang
Keyword(s):  
Numerical Investigation ◽  
Cement Paste ◽  
Sulfate Attack ◽  
Crystallization Pressure

scholarly journals Pore size analyses of cement paste exposed to external sulfate attack and delayed ettringite formation

2019 ◽  
Vol 123 ◽  
pp. 105766 ◽  
Author(s):  
Yushan Gu ◽  
Renaud-Pierre Martin ◽  
Othman Omikrine Metalssi ◽  
Teddy Fen-Chong ◽  
Patrick Dangla
Keyword(s):  
Pore Size ◽  
Cement Paste ◽  
Sulfate Attack ◽  
Delayed Ettringite Formation ◽  
Ettringite Formation

Use of Raman spectroscopy to characterize the effect of nanomagnetite as an addition to Portland cement paste on mitigating internal sulfate attack

2020 ◽  
Vol 262 ◽  
pp. 120803
Author(s):  
Tassiane A. Oliveira ◽  
Igor M. Pinkoski ◽  
Mariana O.G.P. Bragança ◽  
André Assmann ◽  
Isabela C. Oliveira ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Portland Cement ◽  
Cement Paste ◽  
Sulfate Attack ◽  
Portland Cement Paste ◽  
Internal Sulfate Attack

X-Ray Microtomography of an Astm C109 Mortar Exposed to Sulfate Attack

1994 ◽  
Vol 370 ◽  
Author(s):  
D.P. Bentz ◽  
Nicos. S. Martys ◽  
P. Stutzman ◽  
M. S. Levenson ◽  
E.J. Garboczi ◽  
...  
Keyword(s):  
Cement Paste ◽  
Sodium Sulfate ◽  
Three Dimensional ◽  
Sulfate Solution ◽  
Sulfate Attack ◽  
Sodium Sulfate Solution ◽  
Mortar Sample ◽  
Air Voids ◽  
X Ray ◽  
Dimensional Image

AbstractX-ray microtomography can be used to generate three-dimensional 5123 images of random materials at a resolution of a few micrometers per voxel. This technique has been used to obtain an image of an ASTM C109 mortar sample that had been exposed to a sodium sulfate solution. The three-dimensional image clearly shows sand grains, cement paste, air voids, cracks, and needle-like crystals growing in the air voids. Volume fractions of sand and cement paste determined from the image agree well with the known quantities. Implications for the study of microstructure and proposed uses of X-ray microtomography on cement-based composites are discussed.

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