Investigation of sulfuric acid attack upon cement mortars containing silicon carbide powder

In Kyu Jeon, Abdul Qudoos, Sadam Hussain Jakhrani, Hong Gi Kim, Jae Suk Ryou

Research output: Contribution to journalArticle

Abstract

Exposure of concrete to aggressive environments such as sewage drains can cause significant damage to the concrete and decrease its durability. Fillers can be used to improve the resistance of cement concrete against aggressive environment. In this study, silicon carbide was used as a partial replacement for fine aggregate in fractions up to 10% by weight. Specimens were fabricated and exposed to water and sulfuric acid solution. The specimens were examined for various parameters i.e. mass change, compressive strength change, ultrasonic pulse velocity, thermogravimetric analysis, Fourier transform infrared spectroscopy, X-ray diffraction analysis, and scanning electron microscopy. The results indicate that silicon carbide particles play an important role by filling the pores inside the cement composites and densifying the microstructure due to the filler effect. The cement mortars containing silicon carbide showed improved resistance to sulfuric acid attack and this behavior was enhanced with the increase in silicon carbide content.

Original languageEnglish
Pages (from-to)181-189
Number of pages9
JournalPowder Technology
Volume359
DOIs
StatePublished - 2020 Jan 1

Fingerprint

Mortar
Sulfuric acid
Silicon carbide
Powders
Cements
Concretes
Fillers
Sewage
X ray diffraction analysis
Compressive strength
Fourier transform infrared spectroscopy
Thermogravimetric analysis
Durability
Ultrasonics
Microstructure
Scanning electron microscopy
sulfuric acid
silicon carbide
Water
Composite materials

Keywords

  • Filler
  • Mortar
  • Scanning electron microscopy
  • Silicon carbide
  • Sulfuric acid attack

Cite this

Jeon, In Kyu ; Qudoos, Abdul ; Jakhrani, Sadam Hussain ; Kim, Hong Gi ; Ryou, Jae Suk. / Investigation of sulfuric acid attack upon cement mortars containing silicon carbide powder. In: Powder Technology. 2020 ; Vol. 359. pp. 181-189.
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Investigation of sulfuric acid attack upon cement mortars containing silicon carbide powder. / Jeon, In Kyu; Qudoos, Abdul; Jakhrani, Sadam Hussain; Kim, Hong Gi; Ryou, Jae Suk.

In: Powder Technology, Vol. 359, 01.01.2020, p. 181-189.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Investigation of sulfuric acid attack upon cement mortars containing silicon carbide powder

AU - Jeon, In Kyu

AU - Qudoos, Abdul

AU - Jakhrani, Sadam Hussain

AU - Kim, Hong Gi

AU - Ryou, Jae Suk

PY - 2020/1/1

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AB - Exposure of concrete to aggressive environments such as sewage drains can cause significant damage to the concrete and decrease its durability. Fillers can be used to improve the resistance of cement concrete against aggressive environment. In this study, silicon carbide was used as a partial replacement for fine aggregate in fractions up to 10% by weight. Specimens were fabricated and exposed to water and sulfuric acid solution. The specimens were examined for various parameters i.e. mass change, compressive strength change, ultrasonic pulse velocity, thermogravimetric analysis, Fourier transform infrared spectroscopy, X-ray diffraction analysis, and scanning electron microscopy. The results indicate that silicon carbide particles play an important role by filling the pores inside the cement composites and densifying the microstructure due to the filler effect. The cement mortars containing silicon carbide showed improved resistance to sulfuric acid attack and this behavior was enhanced with the increase in silicon carbide content.

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