scholarly journals Reflection Crack Analysis of Asphalt Overlay on Cement Concrete Pavement Based on XFEM

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Qiang Li ◽  
Zhixiang Chen ◽  
Shaohui Luo
Keyword(s):  
Asphalt Mixture ◽  
Three Dimensional ◽  
Concrete Pavement ◽  
Cement Concrete ◽  
Extended Finite Element ◽  
Reflection Cracking ◽  
Asphalt Overlay ◽  
Cement Concrete Pavement ◽  
Cracking Characteristics ◽  
Predicted Values

Based on the improved Paris formula, the reflection cracking characteristics of asphalt overlay on the cement concrete pavement are carefully scrutinized. The fatigue life is also predicted through the indoor simulation tests and establishing the two- and three-dimensional extended finite-element method (XFEM) models. Four fracture factors of the Paris formula in the asphalt mixture are appropriately calculated by fitting the N-a curve of the indoor test, and their predicted values are then exploited in the numerical simulations. The obtained results show that the numerical model can successfully predict the results of the indoor simulation test. It indicates that the XFEM has apparent advantages in examining the reflection cracking of the asphalt overlay on the cement concrete pavement.

The Research on the Temperature Resistance Test of Polypropylene Geotextile in Asphalt Overlay

2012 ◽  
Vol 178-181 ◽  
pp. 1287-1292
Author(s):  
Rong Guo Hou ◽  
Bo Tian ◽  
Lei Quan
Keyword(s):  
High Temperature ◽  
Melting Point ◽  
Asphalt Mixture ◽  
Concrete Pavement ◽  
Temperature Fields ◽  
Cement Concrete ◽  
Modeling And Analysis ◽  
Temperature Resistance ◽  
Asphalt Overlay ◽  
Cement Concrete Pavement

The melting point of polypropylene geotextile is 170 centigrade. However, during the repaving design of the old cement concrete pavement, the paving temperature of the asphalt mixture is often 160-170 centigrade or above. Therefore, it is very important to verify that whether the polypropylene geotextile can be paved under a high temperature. Through the modeling and analysis of temperature fields and relevant temperature tests in the laboratory, the paper has tested the surface temperatures of the polypropylene geotexile when the asphalt mixture is paved under a high temperature. The results show that, under a simulated paving temperature of over 190 centigrade, the highest temperature of polypropylene geotextile is only about 160 centigrade, which is lower than its melting point. Therefore, the polypropylene geotextile can be used for the paving under a high temperature.

Grouting Material Mix Proportion Test Research of Void the Old Cement Concrete Pavement Slab

2014 ◽  
Vol 912-914 ◽  
pp. 162-167
Author(s):  
Da Wei Lv ◽  
Guan Jun Xu ◽  
Xiao Li Sun
Keyword(s):  
Experimental Studies ◽  
Concrete Pavement ◽  
Service Performance ◽  
Cement Concrete ◽  
Bleeding Rate ◽  
Asphalt Overlay ◽  
Grouting Material ◽  
Mix Proportion ◽  
Cement Concrete Pavement ◽  
Mixing Proportion

The effective treatment of void cement concrete pavement slab through grouting technology is the important premise of ensuring the service performance of asphalt overlay engineer on cement concrete pavement. Based on the current problems of grouting technology, we did experimental studies on the mixing proportion of grout slurry and analyzed the effects of slurry composition and admixture type on mechanical properties including the strength, mobility, viscosity, expansion rate and bleeding rate of the slurry and on the service performance. Based on these, we put forward the control indexes for grouting slurry mix proportion determination which provided guidance for the design and construction quality control of grouting under the old cement concrete pavement slab.

Analysis the Control Techniques of Reflection Crack on Asphalt Overlay of Old Cement Concrete Pavement

2012 ◽  
Vol 204-208 ◽  
pp. 1945-1948 ◽  
Author(s):  
Jue Wang
Keyword(s):  
Main Type ◽  
Concrete Pavement ◽  
Pavement Performance ◽  
Cement Concrete ◽  
Paper Briefly ◽  
Control Techniques ◽  
Asphalt Overlay ◽  
Cement Concrete Pavement ◽  
Reflection Crack ◽  
Technical Measures

Cement concrete pavement is the main type of highway pavement in our country. The asphalt overlay on old concrete pavement is one of the main measures to improve the pavement performance, to improve the bearing capacity and extended service life. But, the prevention of reflection cracks is a key problem need to overcome. This paper briefly analyzes cause of the formed mechanism of reflecting crack of bituminous paving course on old cement concrete pavement, and elaborated some major technical measures of preventing or retarding reflection cracks.

scholarly journals Durability of concrete pavement strengthened with asphalt layer with FRP fibres

2018 ◽  
Vol 64 (3) ◽  
pp. 81-97
Author(s):  
P. Tutka ◽  
R. Nagórski ◽  
P. Radziszewski ◽  
M. Sarnowski ◽  
M. Złotowska
Keyword(s):  
Fatigue Life ◽  
Concrete Slab ◽  
Asphalt Mixture ◽  
Concrete Pavement ◽  
Cement Concrete ◽  
Asphalt Overlay ◽  
Road Pavement ◽  
Traffic Loads ◽  
Pavement Structures ◽  
The Impact

SummaryPavements made of cement concrete, used for road constructions, are damaged during use. This applies to both the pavements of rural and forest roads with very low traffic loads, as well as road pavements with high traffic loads. One of the most effective ways of repairing damaged concrete cement pavements is through placing an asphalt overlay on a concrete slab. In order to increase the fatigue life of the asphalt overlay, asphalt mixtures are modified with fibres. One technological solution is to use FRP (Fiber Reinforced Polymer), an innovative material with improved properties. The aim of this paper is to assess the impact of asphalt overlays modified with a new type of fibres to strengthen the durability of weakened cement concrete pavement structures. On the basis of the conducted analyses, it was shown that the use of an asphalt layer reinforcement increases fatigue life, for both 15 cm thick prefabricated slabs and a typical road pavement for average traffic made of 25 cm doweled and anchored concrete slabs. There was a significant increase in the fatigue life of the concrete pavement structure as a result of modifying the overlaid asphalt mixture with FRP fibres.

The Thermal Stress Analysis on Stress Absorption Interlayer of Asphalt Overlay

2012 ◽  
Vol 174-177 ◽  
pp. 570-574
Author(s):  
Peng Tao Xue ◽  
Xiu Shan Wang
Keyword(s):  
Shear Stress ◽  
Thermal Stress ◽  
Vertical Displacement ◽  
Concrete Pavement ◽  
Laminar Shear Stress ◽  
Cement Concrete ◽  
Bottom Stress ◽  
Asphalt Overlay ◽  
Cement Concrete Pavement ◽  
Laminar Shear

By using finite element method, the thermal stress of stress absorption interlayer of asphalt overlay on the cement concrete pavement is analyzed in this paper. The result shows that the inter-laminar shear stress and the structural vertical displacement are influenced by the thickness of stress absorption layer, while the asphalt bottom stress is less affected; the increase of the modulus is unfavorable to the structural vertical displacement, the inter-laminar shear stress and the asphalt bottom stress.

Effect of Interface Bond Condition on Airport Double-Layer Pavement Overlay’s Load Stress and Deflection

2013 ◽  
Vol 639-640 ◽  
pp. 429-433 ◽  
Author(s):  
Xing Zhong Weng ◽  
Xiang Cheng Yan ◽  
Wen Lu Liu ◽  
Lei Liang ◽  
Xin Qiang Li
Keyword(s):  
Double Layer ◽  
Coupling Coefficient ◽  
Three Dimensional ◽  
Element Model ◽  
Concrete Pavement ◽  
Cement Concrete ◽  
Cement Concrete Pavement ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element ◽  
Interface Bond

In order to study the influence of interface bond condition between new and old cement concrete pavement on overlay performance, the three-dimensional finite element model of the airport double-layer pavement was established. The pavement overlay's load stress and deflection were analyzed, the coupling coefficient between new and old cement concrete pavement was calculated based on the bottom of overlay deflection basin shape factor. The results show that the coupling coefficient reflects the degrees of interface bond condition well. Poor interface bond condition increases the overlay's load stress and deflection. The points that more closely distance from the wheels load center, the bigger the pavement overlay's load stress and deflection is. Therefore, more attention should be paid to the interface bond condition during the airport pavement overlay's designs and constructions.

Performance and Application of Sampave Overlaying on Old Cement Concrete Pavement

2011 ◽  
Vol 255-260 ◽  
pp. 3223-3227
Author(s):  
Ming Liang Xing ◽  
Shuan Fa Chen ◽  
Zu Zhong Li ◽  
Hua Xin Chen ◽  
Bing Gang Wang
Keyword(s):  
Fatigue Life ◽  
Low Temperature ◽  
Creep Test ◽  
Asphalt Mixture ◽  
Concrete Pavement ◽  
Cement Concrete ◽  
Good Ability ◽  
Cement Concrete Pavement ◽  
And Performance ◽  
Better Than

How to prevent and delay the emergence of reflective cracks effectively is a most important task for road researchers to the asphalt mixture overlaid on the old cement concrete pavement. Several methods preventing reflective cracks prevention have been used before, but few are satisfied. In this paper Sampave is put forward as a new method or structure which is better than the others. Base on principle of reflective cracks, a new layer named Sampave was put forward. And this paper discusses its aspaht, gradation and performance. According to the requirement reasonable gradation is suggested for practice. By means of researching on materials performance in the lab, it is obviously that Sampave has good performance at low temperature. Results of bending and creep test indicate that Sampave has good ability in resisting deformation. Meanwhile the result of fatigue test indicates that the fatigue life of Sampave is more than 210 thousand, therefore it has good performance in anti-cracking, and also the results of application in the project show its advantages in resisting reflective cracks.

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