The sulfate corrosion resistance behavior of slag cement mortar

Qian, Ye; Shen, Chengjin; Sun, Shu Ling; Rui, Chen; Song, Hongjian

doi:10.1016/j.conbuildmat.2014.08.019

Cited by 21 publications

(4 citation statements)

References 8 publications

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“…The sulfate immersion test is a very slow erosion process, and the specimen's appearance has no obvious erosion change in a short time [34]. When the two groups of samples were immersed in the solution for 270 d, the apparent morphology of the MS mortar samples was not damaged.…”

Section: Comparison Of Macroscopic Morphologymentioning

confidence: 99%

Study on the Stability of Low-Carbon Magnesium Cementitious Materials in Sulfate Erosion Environments

et al. 2023

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The current investigation focuses on the stability of the magnesium oxide-based cementitious system under the action of sulfate attack and the dry-wet cycle. The phase change in the magnesium oxide-based cementitious system was quantitatively analyzed by X-ray diffraction, combined with thermogravimetry/derivative thermogravimetry and scanning electron microscope, to explore its erosion behavior under an erosion environment. The results revealed that, in the fully reactive magnesium oxide-based cementitious system under the environment of high concentration sulfate erosion, there was only magnesium silicate hydrate gel formation and no other phase; however, the reaction process of the incomplete magnesium oxide-based cementitious system was delayed, but not inhibited, by the environment of high-concentration sulfate, and it tended to turn completely into a magnesium silicate hydrate gel. The magnesium silicate hydrate sample outperformed the cement sample, in terms of stability in a high-concentration sulfate erosion environment, but it tended to degrade considerably more rapidly, and to a greater extent, than Portland cement, in both dry and wet sulfate cycle environments.

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Section: Comparison Of Macroscopic Morphologymentioning

confidence: 99%

Study on the Stability of Low-Carbon Magnesium Cementitious Materials in Sulfate Erosion Environments

et al. 2023

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“…8a, the square akes and prisms were found on the surface of the lined ductile iron, and they were CaCO 3 as conrmed by other researchers. 37,38 In addition, there were occulent substances. SiO 2 and CaAl 2 Si 2 O 8 $4H 2 O (CASH) were present, as conrmed from the XRD analysis results.…”

Section: Micro Analysis Of Corrosion Productsmentioning

confidence: 99%

Corrosion behavior and mechanism of ductile iron with different degrees of deterioration of cement mortar lining in reclaimed water pipelines

et al. 2020

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“…The decrease of compressive strength after 1 month may be due to that the sulfate ions migrate from the aggressive medium to the interior of the hardened cement pastes and react with calcium aluminate hydrate and ferrite forming ettringite and/or monosulfate hydrate which expands at later ages causing cracks and deterioration of cement paste. Also MgSO 4 reacts with CSH to produce gypsum, silica gel and brucite (Ye et al, 2014). Gypsum reacts at later ages with C 3 AH 6 to form additional amounts of ettringite and/or monosulfate hydrate whereas brucite attacks CSH to form CH and MSH which has no binding properties.…”

Section: Compressive Strengthmentioning

confidence: 99%

Effect of Sulfonated Acetone Formaldehyde (SAF) on the Firing Resistance and Aggressive Attach of SRC-SF Composite Cement Pastes

Osman¹,

Al-Masry²

2015

American Journal of Engineering and Applied Sciences

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This work aimed to study the effect of the dosage of laboratory synthesized Sulfonated Acetone Formaldehyde (SAF) on the physicmechanical characteristics and durability of SF-SRC cement pastes immersed in 4% MgCl 2 or 4% MgSO 4 solutions or at elevated temperatures up to 800°C. The compressive strength of thermally treatment cement pastes with 1.5% SAF increases up to 600°C, then decreases up to 800°C. Presence of 2.0% SAF works to produce a compact cementing structure, which decreases the accessibility of the penetration of chloride as well as sulphate ion penetration and enhances the durability, hence the total chloride and sulphate contents diminished.

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The sulfate corrosion resistance behavior of slag cement mortar

Cited by 21 publications

References 8 publications

Study on the Stability of Low-Carbon Magnesium Cementitious Materials in Sulfate Erosion Environments

Study on the Stability of Low-Carbon Magnesium Cementitious Materials in Sulfate Erosion Environments

Corrosion behavior and mechanism of ductile iron with different degrees of deterioration of cement mortar lining in reclaimed water pipelines

Effect of Sulfonated Acetone Formaldehyde (SAF) on the Firing Resistance and Aggressive Attach of SRC-SF Composite Cement Pastes

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