Technological Study on Interlayer Bonding of Double-Layer Porous Asphalt Pavement

2013 ◽  
Vol 405-408 ◽  
pp. 1725-1732 ◽  
Author(s):  
Guo Qi Tang ◽  
Dong Wei Cao ◽  
Ke Zhong ◽  
Xiao Qiang Yang
Keyword(s):  
Double Layer ◽  
Asphalt Pavement ◽  
Layer By Layer ◽  
Simulation Experiments ◽  
Porous Asphalt ◽  
One Step ◽  
Bonding Technology ◽  
Pavement Structure ◽  
Technological Study ◽  
Interlayer Bonding

The interlayer bonding of double-layer porous asphalt pavement will show more variations with different construction technologies, such as one-step molding by double-layer (hot on hot) paver, or paving layer by layer (hot on cold) with or without tack coat, and the variations will definitely have influences on pavement structure. Different interlayer technologies are studied in this paper on three levels including simulation experiments on specimen by indoor preparation, calculation of pavement mechanics, and construction of testing road, so that optimal interlayer bonding technology for double-layer porous asphalt pavement is discussed in combination with its effect on permeability.

scholarly journals Comparison of Two Typical Professional Programs for Mechanical Analysis of Interlayer Bonding of Asphalt Pavement Structure

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Shuangxi Li ◽  
Liang Tang ◽  
Kang Yao
Keyword(s):  
Asphalt Pavement ◽  
Mechanical Analysis ◽  
Layered System ◽  
Professional Programs ◽  
Comprehensive Comparison ◽  
Modeling Calculation ◽  
Pavement Structure ◽  
Calculation Processing ◽  
Interlayer Bonding ◽  
Selection Of

The mechanical analysis of interlayer bonding problem of asphalt pavement is performed by the elastic layered system theory or finite element method (FEM); then, a lot of specialized programs based on the above theories emerged successively, of which BISAR3.0 and EverStressFE are quite representative. In order to further clarify the characteristics of BISAR3.0 and EverStressFE for investigating interlayer bonding problem of asphalt pavement, this paper will carry out a comprehensive comparison from the specific realization viewpoint, such as the principle of interlayer bonding, modeling, calculation processing, and result treatment, and a specific example will be given to compare and analyze their functions. The results indicate that the two programs have certain comparability in analyzing the interlayer bonding problem of asphalt pavement, which will contribute to the foundation for the rational selection of asphalt pavement structure mechanical analysis program.

scholarly journals Modulus Inversion Layer by Layer of Different Asphalt Pavement Structures

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Mingming Cao ◽  
Wanqing Huang ◽  
Yiwen Zou ◽  
Guomin Liu
Keyword(s):  
Transition Layer ◽  
Asphalt Pavement ◽  
Structural Characteristics ◽  
Inversion Layer ◽  
Crushed Stone ◽  
Inversion Method ◽  
Layer By Layer ◽  
Pavement Structure ◽  
Pavement Structures ◽  
Structural Layer

In order to improve the accuracy of modulus inversion of the pavement structure layer, a layer-by-layer inversion method was proposed to be compared with the traditional inversion method by inverting the modulus of each structural layer of the inverted asphalt pavement and semirigid asphalt pavement. The results show that the influence of cushion modulus on the modulus of inverted subgrade and modulus of cement-stabilized crushed stone is restricted by the cushion modulus and pavement structure characteristics, and the thicker cement-stabilized crushed stone layer is beneficial for improving inverted modulus of subgrade; besides, for the inverted asphalt pavement, the modulus of the graded crushed stone transition layer has a significant influence on the modulus inversion of cement-stabilized crushed stone. The modulus of the graded gravel transition layer inverted by these two methods is underestimated, the modulus of cement-stabilized gravel is overestimated using the traditional inversion method, and the inversion result of the inverted asphalt pavement is more significantly affected by the inversion method than the semirigid base asphalt pavement. Moreover, the modulus of the pavement structural layer is determined by the material and structural characteristics, and its recommended empirical value or the value in the indoor test does not conform to the actual value of the site; by contrast, the inversion modulus obtained using the layer-by-layer inversion method is closer to the actual value, which can be used in the design of similar pavement structures to accumulate data for determining the material modulus or the pavement structure adjustment coefficient in the pavement structure.

scholarly journals Effects of Paving Technology, Pavement Materials, and Structures on the Fatigue Property of Double-Layer Pavements

2020 ◽  
Vol 2020 ◽  
pp. 1-15
Author(s):  
Changqing Deng ◽  
Yingjun Jiang ◽  
Zhanchuang Han ◽  
Hongwei Lin ◽  
Jiangtao Fan
Keyword(s):  
Surface Layer ◽  
Fatigue Life ◽  
Weibull Distribution ◽  
Double Layer ◽  
Asphalt Pavement ◽  
Bottom Layer ◽  
Asphalt Pavements ◽  
Fatigue Properties ◽  
Pavement Structure ◽  
Pavement Structures

Double-layer paving technology, which is a new technology for construction asphalt pavements, has received increasing research attention for several years. However, few studies have focused on the effect of asphalt pavement layer thickness and mixture-type combinations on the fatigue properties of a double-layer pavement. Therefore, the fatigue properties of the double-layer and traditionally paved asphalt pavements were studied in this work. The effects of two paving technologies, three mixture combinations, and two asphalt layer thickness combinations on the fatigue properties of asphalt pavements were studied through bending beam tests, and a fatigue equation of different asphalt pavements was established using the two-parameter Weibull distribution. Subsequently, the fatigue lives of different pavements were compared and analyzed under the same cyclic load. Results indicate that the flexural strength and fatigue life of the double-layer pavement increased by at least 10% and 54%, respectively, compared with those of a traditionally paved pavement structure. The goodness of fit of the equation established using the Weibull distribution exceeded 0.90. For the traditional paving technology, compared with the pavement structure combination of 4-cm AC-13 surface layer/6-cm AC-20 bottom layer, the fatigue life of a 3-cm AC-13 surface layer/7-cm AC-20 bottom layer can be increased by at least 8%, while the fatigue lives of other pavement structures are reduced significantly. The results also indicate that the fatigue life of the double-layer pavement structure with the 3-cm AC-13 surface layer/7-cm AC-20 bottom layer can be increased by at least 114% compared with that of the traditionally paved pavement structure (4-cm AC-13 surface layer/6-cm AC-20 bottom layer). Additionally, the fatigue lives of other pavement structures can be improved. To effectively improve the fatigue life of an asphalt pavement, a double-layer pavement structure with the 3-cm AC-13 surface layer/7-cm AC-20 bottom layer combination is recommended.

Double layer drainage performance of porous asphalt pavement

2018 ◽  
Author(s):  
Yangyang Ji ◽  
Jianguang Xie ◽  
Mingxi Liu
Keyword(s):  
Double Layer ◽  
Asphalt Pavement ◽  
Porous Asphalt
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