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Investigation of Low Heat Accumulation Asphalt Mixture and Its Impact on Urban Heat Environment.

Xie J, Yang Z, Liang L - PLoS ONE (2015)

Bottom Line: The results also revealed that, compared to asphalt with 0% far-infrared radiant content, the asphalt material with a certain ratio of far-infrared radiation material had higher stability at high and low temperatures as well as good water absorption capacity.The Marshall stability of the specimen mixed with 6% far-infrared radiant was higher by 12.2% and had a residual stability of up to 98.9%.The friction coefficient of the asphalt mixtures with 6% and 12% far-infrared radiation material increased by 17.7% and 26.9%, respectively.

View Article: PubMed Central - PubMed

Affiliation: Department of Civil Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China.

ABSTRACT
This study is focused on investigating the effectiveness of low heat accumulation asphalt mixture and its impact on the urban heat environment. Infrared radiation experiments showed that the temperature of the asphalt mixture decreased with the increase in far-infrared radiant material. The results also revealed that, compared to asphalt with 0% far-infrared radiant content, the asphalt material with a certain ratio of far-infrared radiation material had higher stability at high and low temperatures as well as good water absorption capacity. The Marshall stability of the specimen mixed with 6% far-infrared radiant was higher by 12.2% and had a residual stability of up to 98.9%. Moreover, the low-temperature splitting tensile strength of the asphalt mixture with 6% far-infrared radiation material increased by 21.3%. The friction coefficient of the asphalt mixtures with 6% and 12% far-infrared radiation material increased by 17.7% and 26.9%, respectively.

No MeSH data available.


Related in: MedlinePlus

Relationship between texture depth and infrared powder content.
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pone.0133829.g006: Relationship between texture depth and infrared powder content.

Mentions: Pavement texture depth and skid resistance play a significant role in high-speed driving and performance of the road pavement [22]. The relationship between texture depth and infrared powder content is shown in Fig 6. It can be seen that the depth of the surface structure of asphalt mixture for the five specimens reached 1.05 mm, which is much greater than the texture depth of ordinary AC AK asphalt pavement. Under normal circumstances, the depth of the asphalt pavement structure is about 0.7 mm. Analysis of the dense structure of the SMA skeleton compared to the AC suspension structure could be very helpful in improving skid resistance.


Investigation of Low Heat Accumulation Asphalt Mixture and Its Impact on Urban Heat Environment.

Xie J, Yang Z, Liang L - PLoS ONE (2015)

Relationship between texture depth and infrared powder content.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4519290&req=5

pone.0133829.g006: Relationship between texture depth and infrared powder content.
Mentions: Pavement texture depth and skid resistance play a significant role in high-speed driving and performance of the road pavement [22]. The relationship between texture depth and infrared powder content is shown in Fig 6. It can be seen that the depth of the surface structure of asphalt mixture for the five specimens reached 1.05 mm, which is much greater than the texture depth of ordinary AC AK asphalt pavement. Under normal circumstances, the depth of the asphalt pavement structure is about 0.7 mm. Analysis of the dense structure of the SMA skeleton compared to the AC suspension structure could be very helpful in improving skid resistance.

Bottom Line: The results also revealed that, compared to asphalt with 0% far-infrared radiant content, the asphalt material with a certain ratio of far-infrared radiation material had higher stability at high and low temperatures as well as good water absorption capacity.The Marshall stability of the specimen mixed with 6% far-infrared radiant was higher by 12.2% and had a residual stability of up to 98.9%.The friction coefficient of the asphalt mixtures with 6% and 12% far-infrared radiation material increased by 17.7% and 26.9%, respectively.

View Article: PubMed Central - PubMed

Affiliation: Department of Civil Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China.

ABSTRACT
This study is focused on investigating the effectiveness of low heat accumulation asphalt mixture and its impact on the urban heat environment. Infrared radiation experiments showed that the temperature of the asphalt mixture decreased with the increase in far-infrared radiant material. The results also revealed that, compared to asphalt with 0% far-infrared radiant content, the asphalt material with a certain ratio of far-infrared radiation material had higher stability at high and low temperatures as well as good water absorption capacity. The Marshall stability of the specimen mixed with 6% far-infrared radiant was higher by 12.2% and had a residual stability of up to 98.9%. Moreover, the low-temperature splitting tensile strength of the asphalt mixture with 6% far-infrared radiation material increased by 21.3%. The friction coefficient of the asphalt mixtures with 6% and 12% far-infrared radiation material increased by 17.7% and 26.9%, respectively.

No MeSH data available.


Related in: MedlinePlus