Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 312, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2021.125383
Keywords
Sulfate attack; Pervious concrete; Strength evolution; Corrosion coefficient; Model
Categories
Funding
- Education Department of Jiangxi province science and technology project [GJJ180957]
- National Natural Science Foundation of China [11832013, 51569016]
- funding program for major disciplines academic and technical leaders of Jiangxi Provincial [20172BCB22022]
- Natural Science Foundation of Ningbo [202003N4319]
- Natural Science Foundation of Jiangxi Provincial [2020BA201007]
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The study established a chemical-mechanical model to predict the strength evolution of pervious concrete under different concentrations of sodium sulfate solution, providing a reliable solution for design and durability life assessment.
Strength deterioration is one of the primary indicators to reduce the durability of pervious concrete under sulfate attack. This study aimed to establish a chemical-mechanical model to predict the strength evolution. The compressive strength and splitting tensile strength of pervious concrete in three different concentrations of sodium sulfate solution were obtained by experiments. A corrosion coefficient was adopted to evaluate the deterioration of compressive strength. The corrosion coefficient model was developed by considering the pore filling effect of expansion products and the corrosion damage induced by expansion stress. Compared with the experimental results, the developed model could better characterize the deterioration process of pervious concrete. Therefore, the model proposed in this paper provides a more reliable solution for the design and durability life assessment of pervious pavement engineering in sponge city construction projects.
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