EFFECT OF NANO-TIO<sub>2</sub> PARTICLES ON MECHANICAL PROPERTIES OF CONCRETE

XU Chao; CHEN Youliang; DU Xi

doi:10.13204/j.gyjzG20062604

Volume 51 Issue 4

Aug. 2021

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XU Chao, CHEN Youliang, DU Xi. EFFECT OF NANO-TIO2 PARTICLES ON MECHANICAL PROPERTIES OF CONCRETE[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(4): 154-160. doi: 10.13204/j.gyjzG20062604

Citation:

XU Chao, CHEN Youliang, DU Xi. EFFECT OF NANO-TIO₂ PARTICLES ON MECHANICAL PROPERTIES OF CONCRETE[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(4): 154-160. doi: 10.13204/j.gyjzG20062604

XU Chao, CHEN Youliang, DU Xi. EFFECT OF NANO-TIO2 PARTICLES ON MECHANICAL PROPERTIES OF CONCRETE[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(4): 154-160. doi: 10.13204/j.gyjzG20062604

Citation:

XU Chao, CHEN Youliang, DU Xi. EFFECT OF NANO-TIO₂ PARTICLES ON MECHANICAL PROPERTIES OF CONCRETE[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(4): 154-160. doi: 10.13204/j.gyjzG20062604

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EFFECT OF NANO-TIO₂ PARTICLES ON MECHANICAL PROPERTIES OF CONCRETE

doi: 10.13204/j.gyjzG20062604

School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China

Received Date: 2020-06-26
Available Online: 2021-08-19

Abstract

Abstract

The effect of nano-TiO₂ particles on the compressive, tensile and freeze-thaw durability of concrete was studied, and the normal concrete and the nano-TiO₂ concrete were simulated at room temperature by PFC 2D. The results showed that the nano-TiO₂ particles could improve the compactness of concrete, at room temperature, 3% nano-TiO₂ particles had the most improvement in concrete compressive strength, which was 20.18% higher than normal concrete. The tensile performance of nano-TiO₂ concrete was unchanged, but the freeze-thaw resistance of nano-TiO₂ concrete had been greatly improved. After being subjected to 100 freeze-thaw cycles, its freeze resistance increased by 136.8% compared to normal concrete. PFC 2D could well simulate the compressive and tensile mechanical properties of normal concrete and nano-particle modified concrete. Due to the discreteness of concrete, there was a slight difference between the simulated and experimental stress and strain trends, but it could accurately reflect its peak stress and strain.
- nano-TiO₂ concrete,
- compressive performance,
- tensile performance,
- freeze-thaw durability

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References

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