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Effect of Nano-silica on Concrete Properties under Low-temperature Environment
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Chang-zhi LIU1, Chun-qing LI2, *, Dun CHEN3, Shan-zhi FAN4, 5, Qing-long ZHANG4, 5
Science Technology and Engineering | 2025, 25(9) : 3813 - 3820
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Science Technology and Engineering | 2025, 25(9): 3813-3820
• Papers·Architectural Science •
Effect of Nano-silica on Concrete Properties under Low-temperature Environment
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Chang-zhi LIU1, Chun-qing LI2, *, Dun CHEN3, Shan-zhi FAN4, 5, Qing-long ZHANG4, 5
Affiliations
  • 1 Gansu Highway Traffic Construction Group Co., Ltd., Lanzhou 730000, China
  • 2 School of Civil Engineering, Northwest Minzu University, Lanzhou 730030, China
  • 3 State Key Laboratory of Cryospheric Science and Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
  • 4 Gansu Provincal Transportation Research Institute Group Co., Ltd., Lanzhou 730000, China
  • 5 Gansu Provincial Center of Technology Innovation for Health Monitoring and Security Assessment in Bridge and Tunnel, Lanzhou 730000, China
Published: 2025-03-28 doi: 10.12404/j.issn.1671-1815.2403638
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To solve the problem of deterioration of concrete performance caused by low temperature in cold regions. Based on the theory of nanomaterials to improve the properties of concrete, the effect of nano-silica on the properties of concrete was studied from the macro and micro scales. The results of the compressive strength test show that the compressive strength of ordinary concrete is attenuated by about 10% under low temperature curing. After being mixed with nano silica, the compressive strength of concrete is increased by about 20%, and the optimal dosage is 2%. The improvement mechanism of nano-silica on concrete properties was explored through microscopic test data such as mercury intrusion, X-ray diffraction and scanning electron microscopy. The results show that nano-silica can promote cement hydration at room temperature and low temperature curing, consume calcium hydroxide generated by hydration, and produce more hydrated calcium silicate and hydrated calcium aluminate gel, thereby reducing the porosity of concrete, optimizing the microstructure of concrete, and improving the performance of concrete. Compared with the room temperature environment, the improvement effect of nano-silica on concrete at low temperature is slightly reduced, but it completely overcomes the adverse effects of low temperatures on the performance of ordinary concrete.

concrete  /  nano-silica  /  compressive strength  /  porosity  /  microstructure
Chang-zhi LIU, Chun-qing LI, Dun CHEN, Shan-zhi FAN, Qing-long ZHANG. Effect of Nano-silica on Concrete Properties under Low-temperature Environment[J]. Science Technology and Engineering, 2025 , 25 (9) : 3813 -3820 . DOI: 10.12404/j.issn.1671-1815.2403638
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Year 2025 volume 25 Issue 9
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Article Info
doi: 10.12404/j.issn.1671-1815.2403638
  • Receive Date：2024-05-16
  • Online Date：2025-07-09
  • Published：2025-03-28
Article Data
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History
  • Received：2024-05-16
  • Revised：2024-12-27
Funding
Affiliations
    1 Gansu Highway Traffic Construction Group Co., Ltd., Lanzhou 730000, China
    2 School of Civil Engineering, Northwest Minzu University, Lanzhou 730030, China
    3 State Key Laboratory of Cryospheric Science and Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
    4 Gansu Provincal Transportation Research Institute Group Co., Ltd., Lanzhou 730000, China
    5 Gansu Provincial Center of Technology Innovation for Health Monitoring and Security Assessment in Bridge and Tunnel, Lanzhou 730000, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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