scholarly journals A STUDY ON TENSILE FRACTURE PROPERTIES AT LOW TEMPERATURE OF ASPHALT PAVEMENT ON STEEL DECK BRIDGES AND EVALUATION METHOD OF LONGITUDINAL CRACKING

2006 ◽  
Vol 62 (2) ◽  
pp. 286-294
Author(s):  
Yasumiki YAMAMOTO ◽  
Akihiro MORIYOSHI
Keyword(s):  
Low Temperature ◽  
Evaluation Method ◽  
Asphalt Pavement ◽  
Tensile Fracture ◽  
Fracture Properties ◽  
Longitudinal Cracking ◽  
Steel Deck

Tensile fracture properties of seven tropical grasses at different phenological stages

2011 ◽  
Vol 66 (4) ◽  
pp. 551-559 ◽  
Author(s):  
A. A. A. Jacobs ◽  
J. A. Scheper ◽  
M. A. Benvenutti ◽  
I. J. Gordon ◽  
D. P. Poppi ◽  
...  
Keyword(s):  
Tensile Fracture ◽  
Phenological Stages ◽  
Tropical Grasses ◽  
Fracture Properties

scholarly journals Field measurement and fatigue assessment of orthotropic steel deck with asphalt pavement.

1997 ◽  
pp. 161-171 ◽  
Author(s):  
Masanori Iwasaki ◽  
Koh Nagata ◽  
Takehiro Nishikawa ◽  
Tatsuya Ojio ◽  
Kentaro Yamada
Keyword(s):  
Field Measurement ◽  
Asphalt Pavement ◽  
Fatigue Assessment ◽  
Orthotropic Steel Deck ◽  
Steel Deck

Study of highway asphalt pavement recycling maintenance scheme decision system and decision method

2021 ◽  
pp. 1-10
Author(s):  
Hongjun Jing ◽  
Ping Yao ◽  
Lichen Song ◽  
Jiahao Zhang ◽  
Yanlong Zhao ◽  
...  
Keyword(s):  
Decision Making ◽  
Evaluation System ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Asphalt Pavement ◽  
Economic Benefits ◽  
Highway Maintenance ◽  
Decision System ◽  
Recovery Index ◽  
Pavement Recycling

With modern economic and social development, the technical and economic requirements of highway maintenance and construction projects have become increasingly complicated. Meticulous and in-depth investigation and demonstration guided by scientific theories and methods are of considerable importance to highway maintenance scheme decision. As basis for the selection of highway asphalt pavement recycling maintenance scheme, the factors influencing the decision are analytically demonstrated and an evaluation system is proposed, including three major decision indexes: applicability of recycling mode, recycled pavement quality recovery index, and economic benefit. According to the principles of data statistics and analysis, this study proposes a calculation method for the recycled pavement quality recovery index, analyzes the economic benefits of decision schemes using economic models such as recycling ratio and cost, and puts forward an optimal evaluation method of engineering cost and its fuzzy score intervals. Index weights are calculated through the analytic hierarchy process, and the comprehensive decision evaluation system and comprehensive evaluation method are established. Subsequently, the decision-making method is analyzed on the basis of the decision system by combining the related data. Results show maximum weight of the pavement quality recovery index and minor differences among four recycling schemes in the quality recovery index and applicability. The decision-making results are simplified with clear hierarchical feature because of the fuzzy score intervals of each index. Findings can provide a reference for the asphalt pavement recycling scheme decision.

Research of Water Damage Resistance Performance of CAM in Low Temperature Condition

2013 ◽  
Vol 723 ◽  
pp. 157-162
Author(s):  
Jian Li ◽  
Qu Chao ◽  
He Ping
Keyword(s):  
Low Temperature ◽  
Atmospheric Pressure ◽  
Asphalt Pavement ◽  
Natural World ◽  
Chloride Salt ◽  
The Road ◽  
Normal Atmospheric Pressure ◽  
Water Damage ◽  
Resistance Performance ◽  
Complex Polymer

Under normal atmospheric pressure conditions, volume suddenly increases about 11% when the water freezes and decreased when the ice melts. The pressure can reach up to 2500 times of atmospheric pressure in the closed space when the water freezing. This is a very important characteristic of the natural world and the industrial. In low temperature condition, the snow on the pavement is easy to melt and freeze, and it will affect the road safety, increase the cracking of the road and accelerate asphalt pavement water damage. Bitumen is a mixture consisting of some extremely complex polymer hydrocarbons and hydrocarbon derivatives of non-metallic (oxygen, sulfur, nitrogen). Deicing salt is used to prevent freezing in that area, chloride salt is its main ingredient. When the water melting point reduced, it is not easy to icing but to penetrate the asphalt pavement. If the temperature is continued to reduce, salt solution will still freezing. At last, the pavement will form water damage in repeated freeze-thaw cycles conditions.

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