Materials Reports  2022, Vol. 36 Issue (Z1): 22030021-9 |
| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Effect of Material Parameters on the Control of the Apparent Porosity of Fair-faced Concrete |
| CHEN Yanqiang1,2, QIAN Chunxiang1,2, ZHANG Jian1,2
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1 School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
2 Research Center of Green Building Materials & Carbon Utilization, Southeast University, Nanjing 211189, China |
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Abstract The material parameters of fair-faced concrete are important factors that determine its apparent quality. This work uses different types of cement, fly ash, coarse and fine aggregates and additives to study the effects of the initial air content, maximum coarse aggregate particle size, plastic viscosity coefficient, initial yield stress and bleeding rate on the apparent pores of fair-faced concrete. The appropriate range of each material parameter is given separately. In addition, based on the three parameters of the surface pore area ratio, pore distribution standard deviation and maximum pore diameter, the apparent pore evaluation standard of fair-faced concrete is proposed. Finally, fair-faced concrete with excellent apparent quality can be obtained by adjusting the material parameters to the corresponding range.
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Published: 05 June 2022
Online: 2022-06-08
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| Fund:National Natural Science Foundation of China (51738003) and China Railway Science and Technology Research and Development Program “Research on Key Technologies of Key Stations in Beijing-Tianjin-Hebei Region” (P2018G049). |
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