Resistance of high-volume fly ash self compacting concrete to internal sulfate attack
Joint Authors
Taha, Ahmad A.
al-Attar, Tariq Salih
Source
Engineering and Technology Journal
Issue
Vol. 36, Issue 12A (31 Dec. 2018), pp.1260-1266, 7 p.
Publisher
Publication Date
2018-12-31
Country of Publication
Iraq
No. of Pages
7
Main Subjects
Engineering & Technology Sciences (Multidisciplinary)
Abstract EN
This paper investigates the durability of high-volume Fly ash selfcompacting concrete, HVFASCC that exposed to internal sulfate attack.
At the present work, HVFASCC was produced with two Fly ash replacements: 50 and 60% by weight of Portland cement.
The internal sulfate attack was simulated by adding natural gypsum (CaSO4) that contain ion (SO3 -2 ) to fine aggregate by two weight percentages: 1 and 2%.
Limestone dust was used as filler with a content of 100 kg/m3 .
The cementitious materials, cement and Fly ash, content was 400 kg/m3 and the water to powder ratio for the studied mixes was 0.34 by weight.
To ensure the self-compact ability of the mixes, slump flow, T500, Vfunnel and L-box tests were done.
The Compressive, Splitting and Flexural strength Tests were extended to the age of 240 days.
The results showed that there is no significant difference between 1 and 2% of SO3 content on the behavior of all mixes.
The presence of limestone powder in the paste solution could have a role in stabilizing ettringite and reducing paste porosity at early ages.
At later age, 240 days, the harmful effect of SO3 is diminished and that may be caused by the depletion of gypsum and the dominant product will be calcium monosulfoluminate hydrates instead of calcium sulfoaluminate hydrates
American Psychological Association (APA)
al-Attar, Tariq Salih& Taha, Ahmad A.. 2018. Resistance of high-volume fly ash self compacting concrete to internal sulfate attack. Engineering and Technology Journal،Vol. 36, no. 12A, pp.1260-1266.
https://search.emarefa.net/detail/BIM-899652
Modern Language Association (MLA)
al-Attar, Tariq Salih& Taha, Ahmad A.. Resistance of high-volume fly ash self compacting concrete to internal sulfate attack. Engineering and Technology Journal Vol. 36, no. 12A (2018), pp.1260-1266.
https://search.emarefa.net/detail/BIM-899652
American Medical Association (AMA)
al-Attar, Tariq Salih& Taha, Ahmad A.. Resistance of high-volume fly ash self compacting concrete to internal sulfate attack. Engineering and Technology Journal. 2018. Vol. 36, no. 12A, pp.1260-1266.
https://search.emarefa.net/detail/BIM-899652
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 1265-1266
Record ID
BIM-899652