Proceedings of the 2018 3rd International Conference on Automation, Mechanical Control and Computational Engineering (AMCCE 2018)

Variation of Compressive Strength of Fresh and Precast Concrete in 3 Years in Sulfate

Authors
Xiaoxu Yu, Jingshu Zhang, Xinmian Li, Qingyou Dong, Yinhua Zhang
Corresponding Author
Xiaoxu Yu
Available Online May 2018.
DOI
https://doi.org/10.2991/amcce-18.2018.100How to use a DOI?
Keywords
fresh concrete, precast concrete, immersion test, Na2SO4 solution, variation of comprehensive compressive strength, proportion of fly ash
Abstract
We conducted an immersion test for fresh and precast concrete in Na2SO4 solution of 5 g/L over 3 years. The water-to-binder ratio is 0.50 and the proportions of fly ash are 0-35%. The descent rate of compressive strength curve is regarded as the criterion, and the conclusions are as follows: (1) For corroded concrete, the compressive strength has a dividing point between strengthening phase and damage phase. The dividing point of precast concrete is 540-720d, and is not related to content of fly ash. The dividing point of fresh concrete is 180-720d, and is further delayed with an increase in content of fly ash. (2) The optimum value of fly ash for both fresh and precast concrete is 25%. (3) For non-corroded concrete, fly ash decreases the compressive strength before 180 days, and increases in a given time interval of 270-720d, but over long durations, the compressive strength is approximately the same regardless of fly ash content. (4) The sulfate corrosion resistance of precast concrete is higher than that of fresh concrete.
Open Access
This is an open access article distributed under the CC BY-NC license.

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Proceedings
2018 3rd International Conference on Automation, Mechanical Control and Computational Engineering (AMCCE 2018)
Part of series
Advances in Engineering Research
Publication Date
May 2018
ISBN
978-94-6252-508-5
ISSN
2352-5401
DOI
https://doi.org/10.2991/amcce-18.2018.100How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

TY  - CONF
AU  - Xiaoxu Yu
AU  - Jingshu Zhang
AU  - Xinmian Li
AU  - Qingyou Dong
AU  - Yinhua Zhang
PY  - 2018/05
DA  - 2018/05
TI  - Variation of Compressive Strength of Fresh and Precast Concrete in 3 Years in Sulfate
BT  - 2018 3rd International Conference on Automation, Mechanical Control and Computational Engineering (AMCCE 2018)
PB  - Atlantis Press
SN  - 2352-5401
UR  - https://doi.org/10.2991/amcce-18.2018.100
DO  - https://doi.org/10.2991/amcce-18.2018.100
ID  - Yu2018/05
ER  -