Bidirectional heat induced structure of asphalt pavement for reducing pavement temperature

The aging of asphalt pavement gets serious in the course of service due to the large number of vehicles and high pavement temperature. A survey was conducted on urban road’s asphalt pavement in the city of Tianjin. By analyzing the extracted asphalt sample from asphalt pavement built in different years, it shows that asphalt’s softening point and viscosity increase but its penetration and ductility attenuate with the extension of service period. Of which, the ductility changes dramatically with its ductility attenuating fast in the early years of service and the attenuation of ductility tending to slow down later. The vertical difference of aging in different depth of pavement is marked and degree of aging tends to attenuate from the surface to the center.

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Development of Asphalt Pavement Temperature Model for Tropical Climate Conditions in West Bali Region

Procedia Engineering ◽

10.1016/j.proeng.2015.11.126 ◽

2015 ◽

Vol 125 ◽

pp. 474-480 ◽

Cited By ~ 3

Author(s):

I. Made Agus Ariawan ◽

Bambang Sugeng Subagio ◽

Bagus Hario Setiadji

Keyword(s):

Asphalt Pavement ◽

Tropical Climate ◽

Temperature Model ◽

Climate Conditions ◽

Pavement Temperature

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Emission Characteristics of VOCs during Asphalt Pavement Construction

Materials Science Forum ◽

10.4028/www.scientific.net/msf.1035.999 ◽

2021 ◽

Vol 1035 ◽

pp. 999-1005

Author(s):

Yin Huai Ma ◽

Li Guo ◽

Shao Peng Wu ◽

Na Li ◽

Jun Xie

Keyword(s):

Asphalt Pavement ◽

Asphalt Binder ◽

Critical Factor ◽

Rolling Process ◽

Field Investigation ◽

Construction Technology ◽

Pavement Temperature ◽

Pavement Construction ◽

Complex Organic ◽

Vocs Emission

As the important part of expressway, the construction technology of asphalt pavement will contribute to the production of greenhouse gases and other volatile organic compounds (VOCs), which has a significant impact on the environment. In order to further analyze the composition, distribution and release of VOCs during asphalt pavement construction, the VOCs emission during paving and rolling were measured through field investigation and sampling. The results show that there are approximately 100 kinds of VOCs substances detected due to the complex organic component of asphalt binder, which is a critical factor to influence the VOCs emission during asphalt pavement construction. During the paving process, the largest VOCs release is 1015.05 ug/m3. With the increase of rolling times, the pavement temperature gradually decrease, and the VOCs emission drops to 266.73 ug/m3. The content of the 10 kinds of substances with the highest concentration accounts for more than 50% of the total VOCs content, in which the proportion of aliphatic hydrocarbons (ALH) and oxygenated hydrocarbon (O-HYD) of the paving process are the highest, while the proportion of aromatic hydrocarbons (ARH) is dominated in the rolling process. The results are vulnerable to the external environment, especially at lower emission level. The relevant research results have certain guiding significance for the control and treatment of harmful gas emission in the construction process of asphalt pavement.

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Asphalt Pavement Temperature Related to Arid Saudi Environment

Journal of Materials in Civil Engineering ◽

10.1061/(asce)0899-1561(1994)6:1(1) ◽

1994 ◽

Vol 6 (1) ◽

pp. 1-14 ◽

Cited By ~ 20

Author(s):

H. I. Al‐Abdul Wahhab ◽

F. A. Balghunaim

Keyword(s):

Asphalt Pavement ◽

Pavement Temperature

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Research of Deicing and Melting Snow on Airport Asphalt Pavement by Carbon Fiber Heating Wire

Advances in Materials Science and Engineering ◽

10.1155/2020/5209350 ◽

2020 ◽

Vol 2020 ◽

pp. 1-6 ◽

Cited By ~ 1

Author(s):

Xin Su ◽

Yong Lai ◽

Yan Liu ◽

Daoxun Ma ◽

Peng Wang

Keyword(s):

Carbon Fiber ◽

Air Temperature ◽

Asphalt Pavement ◽

Electrical Power ◽

Area Ratio ◽

Melting Snow ◽

Cold Zone ◽

Heating Wire ◽

Pavement Temperature ◽

Free Area

In the paper, the method of deicing and melting snow by the carbon fiber heating wire (CFHW) embedded in the airport asphalt pavement is proposed to improve the security of airport operation. The field experiment of deicing and melting snow on the airport asphalt pavement is conducted. Deicing and melting snow, asphalt pavement temperature, ice-free area ratio, and snow-free area ratio are analyzed. Electrical power with 350 W/m2 is input to the airport asphalt pavement for deicing and melting snow by the CFHW. In the experiment, 3 mm ice can be melted, and the average infrared ray temperature (IRT) of the airport asphalt pavement surface can achieve an increment of 13.0°C in 2.5 hours when the air temperature is from −7.5°C to −2.2°C. Snow with 3.2 mm precipitation can be melted in 2 hours when the air temperature is from −4.8°C to −3.5°C, and the asphalt pavement temperature can achieve an increment of 5.9°C at the depth of 0.5 cm. The results show that the method of deicing and melting snow on the airport asphalt pavement by the CFHW is practicable in the cold zone.

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Pavement Temperature Prediction Model for Oman Climate Condition

Journal of Student Research ◽

10.47611/jsr.vi.555 ◽

2017 ◽

Author(s):

Amani Al-Kalbani ◽

Siham G. Farag

Keyword(s):

Air Temperature ◽

Asphalt Pavement ◽

Paper Study ◽

Climate Condition ◽

Temperature Prediction ◽

Development Models ◽

System Temperature ◽

Standard Models ◽

Pavement Temperature ◽

The Relationship

Asphalt pavement is form an integral part of any transportation system. Temperature is the significant factor that effect on the performance and life span of a pavement. This paper study the relationship between the air temperature and asphalt pavement temperature and using Excel in order to predicate surface asphalt pavement model for Muscat climate. The models were compared with the standard models SHRP and LTPP models [3]. The development models resulted the surface pavement temperature was taken more time in heating cycle than air temperature. When compared the air temperature and surface asphalt pavement temperature with the standards models SHRP and LTPP models. There was difference between them due to the standards models was design for low temperature under zero where in Muscat temperature cannot be under zero [2].

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Asphalt Pavement Temperature Profile for Tropical Climate in Indonesia

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.776.17 ◽

2015 ◽

Vol 776 ◽

pp. 17-23 ◽

Cited By ~ 1

Author(s):

I. Made Agus Ariawan ◽

B.S. Subagio ◽

B.H. Setiadji

Keyword(s):

Air Temperature ◽

Climatic Factors ◽

Asphalt Pavement ◽

Data Logger ◽

Distribution Profile ◽

Testing Method ◽

Tropical Area ◽

Temperature And Humidity ◽

Pavement Temperature ◽

Pavement Layers

Environmental and climatic factors directly affect the temperature of asphalt pavement layers. Air temperature is one of the most important environmental factors that significantly affect the temperature distribution profile of asphalt pavement layers. It is important therefore, to comprehend the asphalt strength characteristics because of the differences in asphalt pavement designs. This study was conducted in tropical area with high humidity in Indonesia. A testing method was carried out to measure both temperature and humidity using thermocouples equipped with data logger and an application program of SAGA Technology. Measurements were taken for consecutive seven sunny days in July 2014. The average values obtained for hourly air temperature and humidity were ranging from 24.92 to 36.98 °C and from 50.31 to 83.69% respectively. Meanwhile, pavement surface temperatures measured at 0, 20 and 65 millimeters depths were varied from 25.29 to 45.65 °C, from 25.37 to 43.59 °C, and from 26.70 to 38.54 °C respectively. Both air and asphalt pavement temperatures are sharply increased from 10:00 a.m. to 02:00 p.m. and are gradually decreased afterward.

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Prediction Model for Asphalt Pavement Temperature in High-Temperature Season in Beijing

Advances in Civil Engineering ◽

10.1155/2018/1837952 ◽

2018 ◽

Vol 2018 ◽

pp. 1-11 ◽

Cited By ~ 5

Author(s):

Jing Chao ◽

Zhang Jinxi

Keyword(s):

High Temperature ◽

Environmental Factors ◽

Least Squares Method ◽

Asphalt Pavement ◽

Temperature Data ◽

Environmental Data ◽

Strongly Correlated ◽

Pavement Temperature ◽

And Performance ◽

Partial Least Squares Method

Asphalt pavement temperatures greatly influence on the bearing capacity and performance, especially in high-temperature season. The variation rules of pavement temperatures under the high-temperature range affect the design and maintenance management of the asphalt pavement, as well as the accurate prediction for pavement temperatures. However, asphalt pavement temperature is greatly affected by various strongly correlated environmental factors and cannot be measured directly or predicted effectively. In this project, temperature sensors were embedded in the pavement of in-service road to collect temperature data by continuous record measurement, and regression model was conducted by the partial least squares method through comprehensive analysis on the pavement temperature data and synchronously environmental data from local weather station measured in July 2013, July 2014, and July 2015. The quantitative relationships in high-temperature season between environmental factors and pavement temperature were determined, and a model was established to predict the temperature of asphalt pavement based on environmental data. The model was verified by the recorded data from July 1, 2016, to July 31, 2016, and the results indicated that the pavement temperature can be predicted accurately and reliably by the proposed model.

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