Abstract
The vigorous development of communication technology, especially the development of wireless network communication technology, has accelerated its informatization process in more and more industrial applications. In the field of monitoring and detection applications, the many advantages of wireless network transmission technology provide an important reference for high‐quality compaction monitoring. Engineering practice shows that the construction technology of asphalt pavement is the ultimate guarantee of engineering quality. It is important to recognize that pavement performance is greatly influenced by interface bonding condition and interface failure can reduce the serviceability of pavements rather than their overall structural lifetime. This paper presents a laboratory test to investigate the bonding tensile performance between asphalt layers by tensile testing. The test methods and devices for determining the bond regarding tensile testing are summarized as follows. Different interface conditions have been analyzed herein: 0.2, 0.4, and 0.6 kg/m2 with corresponding emulsified asphalt (MA) and SBS‐modified MA. It is found that the stress‐strain relationship of tensile testing for interface bonding is similar with low‐carbon steels and it can be categorized into four zones. The results of tensile strength and damage displacement are discussed which are key parameters in describing the interface bonding condition and evaluating pavement performance.
Highlights
The interface bonding condition between asphalt layers is one of the most important factors that affect the performance of the pavement structure and have attracted more and more attention to study the bonding testing during recent years
In order to investigate the interfacial strength of layer bonding, two different laboratory tests are widely considered, namely, shear testing and tensile testing
When cement is added to the interface material, the tensile strength is improved, showing good tensile ductility
Summary
The interface bonding condition between asphalt layers is one of the most important factors that affect the performance of the pavement structure and have attracted more and more attention to study the bonding testing during recent years. This leads to the development of different test devices and corresponding parameters to characterize the bonding properties in numerous papers and scientific contribution, such as layer parallel direct shear test, wedge splitting test, torque test, and pull-off test [1,2,3,4]. It is well recognized that shear stress is not the unique factor to result in poor bonding or loss of bonding and tensile stress is a major factor contributing to the distresses of interface bonding [9]
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