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- 저자 : Jingsong Gao (검색결과 2 건)
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Gao, Longxin,Lai, Yong,Zhang, Huigui,Zhang, Jingsong,Zhang, Wuman Techno-Press 2021 Advances in concrete construction Vol.12 No.5
Roller compacted concrete (RCC) used in the island reef airport runway will be subjected to the coupling actions of the fatigue impacts and the salt spray cycles, which will accelerate the deterioration of runway concrete and even threaten the flight safety. A cyclic impact testing machine and a climatic chamber were used to simulate the low-velocity fatigue impact and the salt spray cycles, respectively. The physical properties, the microstructures and the porosity of RCC were investigated. The results show the flexural strength firstly increases and then decreases with the increase of the fatigue impacts and the salt spray cycles. However, the decrease in the flexural strength is significantly earlier than the compressive strength of RCC only subjected to the salt spray cycles. The chlorine, sulfur and magnesium elements significantly increase in the pores of RCC subjected to 30000 fatigue impacts and 300 salt spray cycles, which causes the decrease in the porosity of RCC. The coupling effects of the fatigue impacts and the salt spray cycles in the later period accelerates the deterioration of RCC.
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Progress and challenges in full spectrum photocatalysts: Mechanism and photocatalytic applications
Jinghang Xu,Jun Shen,Haopeng Jiang,Xiaohui Yu,Waqar Ahmad Qureshi,Chanez Maouche,Jingsong Gao,Juan Yang,Qinqin Liu 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.119 No.-
How to efficiently convert solar energy into storable chemical energy has always been an urgent problemin the field of semiconductor-based photocatalysis. Broaden the light-absorption range of photocatalystsis an important strategy to improve the efficiency of solar energy conversion. This paper focused on therecent reported photocatalytic systems that can make use of full spectrum solar energy, and comparativelyexpounded their design, fabrication methods, mechanism and applications (H2 generation, CO2reduction, chemical synthesis and sterilization). Emphases were given to the specific mechanisms forfull-spectrum absorption in various photocatalysts, including semiconductors with narrow bandgaps,defective semiconductors, plasmonic nano-materials. The outlook was put forward that the future ofphotocatalytic research is infinite, and ongoing efforts should be devoted on the utilization of infraredlightpart in solar spectrum.
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