Investigation of the interface bonding between concrete slab and asphalt overlay

Zhao, Hongduo; Jian-feng, Cao; Yong, Zheng

doi:10.1080/14680629.2017.1329866

Cited by 30 publications

(12 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The work of Benchler [21] showed that, due to better dispersion of stress, the train-induced structural stress under the slab track is much lower than that in pavement structure caused by vehicle load. The test results showed that the tested shear strength between asphalt waterproofing layer and concrete (2.01 MPa) is comparable to the bond strength between structure layers in asphalt pavement [34,35]. Therefore, the bonding strength was considered to be sufficient to resist possible shear stress caused by train load.…”

Section: Test Results and Discussionmentioning

confidence: 92%

Application of Mastic Asphalt Waterproofing Layer in High-Speed Railway Track in Cold Regions

et al. 2018

View full text Add to dashboard Cite

Abstract:Freeze-thaw damage is a typical distress incurred in road and railway engineering in cold regions. Concrete waterproofing layer is commonly used in high-speed railway tracks to prevent the penetration of surface water, however, it cracks easily under thermal stress, especially in cold regions. Recently solutions have been proposed to increase the waterproofing layer's cracking resistance by using asphalt layers. Nonetheless, the use of emulsified asphalt as well as dense-graded asphalt mixture were not effective enough. To improve the effectiveness, in this study, mastic asphalt was designed for application as the waterproofing layer on the subgrade surface of high-speed railway tracks in cold regions. The overall performance of mastic asphalt was preliminarily evaluated by laboratory tests, then a 200-m test section was constructed for field validation in northeastern China as part of a new high-speed railway line, and water content sensors were placed inside the subgrade to monitor the performance of the mastic asphalt waterproofing layer (MAWL). The subsequent field investigation and monitoring data during the two years operation showed that MAWL dramatically outperformed the conventional concrete waterproofing layer in terms of waterproof performance. Plenty of serious cracks were found in the conventional concrete waterproofing layer, but only a limited number of local cracks were observed in MAWL. As a result, MAWL keeps the water content of subgrade at a stable level. In addition, MAWL showed relatively high stability during the two years investigation period, and no obvious deterioration was observed in the test section.

show abstract

Section: Test Results and Discussionmentioning

confidence: 92%

Application of Mastic Asphalt Waterproofing Layer in High-Speed Railway Track in Cold Regions

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Test Apparatus. Considering the effects of normal stress on interface bonding between HMA overlay and PCC layer, an upgraded direct shear test apparatus was developed, and more details about the device can be found in the previous research [25]. e equipment is able to apply normal stress in a horizontal direction through a hydraulic actuator, and the magnitude of normal stress can be obtained by a built-in stress sensor, as shown in Figure 1(a).…”

Section: Methodsmentioning

confidence: 99%

“…It has been widely accepted that the mixture type, PCC surface texture, tack coat material, application rate of tack coat, normal stress on the interface, and temperature are the main influence factors affecting the interface bonding strength between HMA overlay and PCC layer [23][24][25]. For instance, a study pointed out that the interfacial shear strength at 25°C is about five times that of high temperature at 55°C.…”

Section: Introductionmentioning

confidence: 99%

Laboratory Investigation on the Interface Bonding between Portland Cement Concrete Pavement and Asphalt Overlay

Wei

Jian-feng

Zhao

et al. 2021

Mathematical Problems in Engineering

Self Cite

View full text Add to dashboard Cite

The interface bonding between Portland cement concrete (PCC) pavement and hot-mix asphalt (HMA) overlay plays an important role in the performance of the composite pavement. This research conducted a series of comprehensive laboratory studies to investigate the influence factors of the interface bonding strength using a self-designed direct shear test apparatus that can simultaneously apply normal stress and shear stress on a specimen. Four kinds of commonly used tack coat materials were systematically tested and compared under various combinations of normal stress and temperature. Then, coupling effects of the normal stress and temperature on the interface bonding between PCC and HMA were analyzed. The test results show that temperature has a significant impact on the adhesion of the tack coat. Emulsified asphalt was considered the optimal tack coat material because of its simple construction method. In addition, it was found that a damaged interface could still provide considerable bonding strength. Normal stress generated by traffic loads was beneficial to the interface bonding strength, especially at lower temperatures. The temperature had a significant effect on interface bonding and played a leading role in the failure mode of interface bonding.

show abstract

“…Different factors affecting the bond strength at the interface where tack coats are applied have been investigated by different researchers [3,18,20,[25][26][27][28][29][30][31]. The factors in most of these studies are tack coat type, surface type, mixture type, temperature, and residual tack rate.…”

Section: Literature Reviewmentioning

confidence: 99%

“…In the study conducted by Al-Qadi et al [25], the optimum tack coat application rate was recommended depending on surface type, tack coat type, and cleanliness. Zhao et al [28] reported that tack coat application rate and mixture type are less important factors that influence the interlayer shear strength as compared to the surface texture on a cement concrete slab, the tack type, temperature, and humidity.…”

Section: Literature Reviewmentioning

confidence: 99%

Assessment on Bonding Potentials of Trackless Tack under a Thin Overlay

Seo¹,

Sakhaeifar

Wilson

2021

Infrastructures

View full text Add to dashboard Cite

Trackless tacks are used to minimize the loss of tack materials caused by adherence to moving tires. During the last two decades, the paving industry and highway agencies have had an increasing interest in the use of trackless tacks to ensure an adequate bond between the overlay and the existing pavement. Therefore, the need for more studies on the bonding characteristics of various trackless tacks is growing. The purpose of this study is to measure the bonding potential of trackless tacks and identify several variables that affect the shear resistance in terms of bonding strength and energy using statistical analysis. The improvement of interlayer shear resistance by tack treatment is different depending on the tack and surface types. Higher tack reactivation temperatures increase the interlayer shear resistance. Compaction effort is considered to have only a marginal effect on bond performance. Tack and surface types play a more critical role in determining the shear bond strength than residual tack rate in the field experiment.

show abstract

Investigation of the interface bonding between concrete slab and asphalt overlay

Cited by 30 publications

References 3 publications

Application of Mastic Asphalt Waterproofing Layer in High-Speed Railway Track in Cold Regions

Application of Mastic Asphalt Waterproofing Layer in High-Speed Railway Track in Cold Regions

Laboratory Investigation on the Interface Bonding between Portland Cement Concrete Pavement and Asphalt Overlay

Assessment on Bonding Potentials of Trackless Tack under a Thin Overlay

Contact Info

Product

Resources

About