Y Lai’s research while affiliated with Power Construction Corporation of China and other places

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Publications (10)


Mixing ratio parameter
Data distribution of surface humidity of concrete cured by geotextile (%)
Data distribution of humidity difference between geotextile and environment (%)
Humidity Comparative Study of New Maintenance Method in Airport Pavement Concrete of China
  • Article
  • Full-text available

September 2020

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14 Reads

IOP Conference Series Earth and Environmental Science

D X Ma

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Y Liu

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Y Lai

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[...]

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Bo Li

Through comparing actual projects this paper presents and discusses the effects of curing film and geotextile on humidity of airport pavement concrete during maintaining process. The results show that, compared with the maintenance of geotextile, the curing film can ensure sufficient humidity, and it has very significant uniformity and continuity.

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Temperature Comparison Research of New Maintenance Method in Airport Pavement Concrete of China

September 2020

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9 Reads

IOP Conference Series Earth and Environmental Science

Through comparing actual projects this paper presents and discusses the effects of curing film and geotextile on temperature of airport pavement concrete during maintaining process. The results show that, compared with the maintenance of geotextile, the curing film can ensure sufficient temperature, and it has very significant uniformity and continuity.


Sub-porosity(%)
Performance Study Research of New Maintenance Method in Airport Pavement Concrete of China

September 2020

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13 Reads

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1 Citation

IOP Conference Series Earth and Environmental Science

Through comparing actual projects this paper presents and discusses the effects of curing film and geotextile on the mechanical properties, durability and pore structure of concrete. The results show that, compared with the maintenance of geotextile, the curing film can enhance the strength of concrete to a certain extent, improve frost resistance and optimize pore structure of concrete.


Mix proportions of concrete.
Mass loss of non-air-entrained concrete.
Effect of aircraft deicer on deicer-scaling resistance and frost resistance of airport pavement concrete

August 2020

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107 Reads

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3 Citations

Journal of Physics Conference Series

This paper studies the effect of aircraft deicer on deicer-scaling resistance and frost resistance of airport pavement concrete. The mass loss and surface profile of non-air-entrained and air-entrained concrete eroded by water and aircraft deicer are analysed. The surface profile, mass loss rate and relative dynamic elasticity modulus of air-entrained concrete eroded by water and 5% aircraft deicer are discussed during freeze-thaw cycles. It is shown that the low and medium concentration deicer has a negative effect on the deicer-scaling resistance of concrete, and 5% aircraft deicer has the greatest influence. Adding air-entraining agent can improve the deicer-scaling resistance of concrete. Compared with water, 5% aircraft deicer has a negative effect on the frost resistance of air-entrained concrete. The deicer-scaling resistance and frost resistance of air-entrained concrete meet requirements for airport pavement in the most severely cold regions in China.


Influence of steel pipe on mechanical properties of airport cement concrete pavement

August 2020

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112 Reads

Journal of Physics Conference Series

This paper studies the influence of steel pipe on mechanical properties of airport cement concrete pavement. The flexural and compressive strength of concrete are analysed when different steel pipes are added into ordinary concrete. It is shown that the flexural and compressive strength of ordinary concrete are higher than those of concrete containing steel pipe at the age of 7 and 28 days. The compressive strength of concrete decreases more than the flexural strength when the steel pipe is added into concrete. The flexural strength of concrete containing Φ32 seamless steel pipe, DN32 welded steel pipe and DN40 welded steel pipe can still meet the mechanical properties of airport concrete. Compared with DN32 welded steel pipe and DN40 welded steel pipe, the selection of Φ32 seamless steel pipe is beneficial to the mechanical properties of concrete.


The influence of heat flux on melting ice on concrete pavement with carbon fibre heating wire

August 2018

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138 Reads

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8 Citations

IOP Conference Series Materials Science and Engineering

In this paper, the method of melting ice with carbon fibre heating wire (CFHW) buried in concrete pavement is presented to avoid the adverse effects of snow-melting chemicals. The melting ice effect, pavement temperature and energy distribution are analysed. It is shown that, with the air temperature of -5°C and 0.4 m/s wind speed, the time of melting 6.5 mm thick ice on pavement is 8.17 hours, 5.5 hours, 4.25 hours and 3.33 hours when the heat flux is 300 W/m², 400 W/m², 500 W/m² and 600 W/m², respectively. The pavement temperature can be divided into three stages at the depth of 0.5 cm, including temperature rising process, constant temperature process and rapid temperature increase process. The greater the heat flux, the less the time it takes to melt ice, the lower the total energy needed to melt ice. This work is important for choosing how much heat flux to melt ice.




Table 1 Climatic data, input power, snow-melting time and power consumption
Table 2 Thermal properties of concrete and snow
Table 3 Parameters of snow on airport pavement and proportions of power
Melting snow on airport cement concrete pavement with carbon fibre heating wires

December 2015

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320 Reads

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13 Citations

Materials Research Innovations

In this paper, the method of melting snow with carbon fibre heating wires buried in airport cement concrete pavement is presented to avoid the adverse effects of snow-melting chemicals. The snowmelting experiment of pavement is conducted when the snow is heavy and the air temperature is from -4 to -3°C. Electrical power is supplied to the pavement through the use of carbon fibre heating wires. It is shown that, with an input power of 300 W m-2, the temperature of pavement surface can achieve an increment of 7.48°C and the 2.5 cm thick snow can be melted within 4 hours, which is just for melting snow at this condition. The temperature and energy distribution along the depth of pavement is analysed at different times. The findings indicate that the method of melting snow on airport pavement with carbon fibre heating wires is feasible in the snowy weather condition.


Research of carbon fibre grille reinforced composites in airport pavement snowmelt

December 2015

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20 Reads

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10 Citations

Materials Research Innovations

In this paper, the method of melting snow on airport pavement with carbon fibre grille reinforced composites is presented to avoid the adverse effects of snow-melting chemicals. The strength and resistance of different composites are analysed. The field snow-melting experiments of pavement in which carbon fibre grilles are embedded in different depths are conducted when the snow is heavy. The temperatures along the depth of pavement are analysed at different times. It is shown that, with an input power of 300 W m-2, the 2.6 cm thick snow can be melted within 4 hours, which is just for melting snow at this condition. The snow-melting of 5 cm embedded depth of carbon fibre grille is better. The findings indicate that the method of melting snow on airport pavement containing the grille made of carbon fibre heating wires and steel bar is feasible in the snowy weather condition.

Citations (6)


... Although geotextiles made of synthetic fibers (geosynthetics) are considered a modern achievement, the basic concept dates back to ancient times when textiles consisting of locally available natural fibers were employed to increase the stability of roads and soils [1][2][3]. Nowadays, whether it is the stabilization of soil in arid regions [4] or the river banks and seafronts (in tidal areas or harbor infrastructure) [5,6], ground reinforcement for civil infrastructure [7][8][9] or filtration of water excess in farmlands and flood protection [10][11][12], hill slopes stabilization and drainage [13] or even the reinforcement of airstrips under the tarmac layer [14,15], geotextiles are successfully performing in civil engineering and agriculture and becoming an increasingly viable alternative in many other applications. ...

Reference:

Geotextiles—A Versatile Tool for Environmental Sensitive Applications in Geotechnical Engineering
Performance Study Research of New Maintenance Method in Airport Pavement Concrete of China

IOP Conference Series Earth and Environmental Science

... In recent years, many airports have experienced cracks, spalling, warping, misalignment, and even sand and stones in the process of cement concrete pavement [4,5], which mainly reflects the durability of concrete, seriously affects the normal operation of airport runways and the safety of aircraft takeoff and landing, and may even cause the failure of runway function or serious flight accidents [6,7]. In addition, the combination of a harsh climatic environment, frequent sudden natural disasters, and an unnatural environment (such as de-icing salt) accelerates the damage and service-life shortening of airport concrete pavement surfaces [8][9][10]. Concrete's carbonation, water and chloride ion penetration, sulfate corrosion, freeze-thaw Tetraethyl orthosilicate, isobutyltriethoxysilane, acrylic acid, hydrochloric acid, phosphoric acid, anhydrous ethanol, wetting agents, and distilled water were used in the experiments. ...

Effect of aircraft deicer on deicer-scaling resistance and frost resistance of airport pavement concrete

Journal of Physics Conference Series

... Some scholars study how to improve the performance of bitumen and asphalt mixture to avoid negative effect [2][3][4]. At the same time, some methods of deicing and melting snow on the pavement have been researched, such as asphalt mixture containing the snow-melting agent [5], hydraulic heating system [6][7][8][9][10], electrically conductive concrete [11][12][13], carbon fiber grille [14], and CFHW [15][16][17][18][19]. e recent research of deicing and melting snow on the pavement mainly focuses on the CFHW [1]. ...

The Influence of Wind Speed on Melting Ice on Concrete Pavement with Carbon Fiber Heating Wire
  • Citing Conference Paper
  • January 2018

... Real-time de-icing is faster than previous procedures and demonstrates the advantages of carbon fiber over other heating wire materials, including it being lightweight and possessing high flexibility and high tensile strength. Lai [13] investigated the effect of heat flux on the ice melting effect of concrete pavement through model tests and suggested that the increase in heat flux can effectively reduce the total energy consumption of ice melting. Lai [14] established a full-scale model in the field for assessing the performance of the carbon fiber heating wire approach for snow melting on airport pavement, proposing that a nonlinear temperature gradient is formed inside the pavement during the heating process. ...

The influence of heat flux on melting ice on concrete pavement with carbon fibre heating wire

IOP Conference Series Materials Science and Engineering

... In most other studies [8][9][10][11][12][13][14][15][16][17][18][19][20][21], the thermal performance of heating cementitious composites was analyzed in laboratories indoors. Hence, studies have been recently conducted to analyze the thermal performance of heating cementitious composites in outdoor environments [8,22,[27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44]. In these studies, a concrete slab (size = 3000 × 3000 × 100 mm 3 ) was fabricated in an outdoor environment, and CNT heating modules were embedded in the center of the concrete slab. ...

Research of carbon fibre grille reinforced composites in airport pavement snowmelt
  • Citing Article
  • December 2015

Materials Research Innovations

... Whereas, electrical cables can supply controlled internal heat to specific concrete areas where curing is critical for effective strength development. Nevertheless, the curing of concrete with heating cables or wires is not broadly addressed in the existing literature, especially in terms of thermal activation of SCMs [18][19][20][21]. ...

Melting snow on airport cement concrete pavement with carbon fibre heating wires

Materials Research Innovations