Stasiuk, Laura
(Department of Civil, Geological & Environmental Engineering, University of Saskatchewan, Canada)
,
Soliman, Haithem
(Department of Civil, Geological & Environmental Engineering, University of Saskatchewan, Canada)
,
Anthony, Ania
(Saskatchewan Ministry of Highways and Infrastructure, Saskatoon, SK)
Tack coat materials, which are typically emulsified bituminous products, are used to provide a sufficient bond between asphalt concrete (AC) layers/lifts. Owing to construction limitations and severe temperature variations in cold regions, agencies are investigating the use of fast curing and non-t...
Tack coat materials, which are typically emulsified bituminous products, are used to provide a sufficient bond between asphalt concrete (AC) layers/lifts. Owing to construction limitations and severe temperature variations in cold regions, agencies are investigating the use of fast curing and non-tracking emulsions as tack coat materials. The objective of this study is to evaluate the performance of various tack coat products in cold climates. Several tack coat products were installed during a field study in Saskatchewan, Canada. The tack coat products included slow setting, medium setting, and three proprietary fast curing/non-tracking emulsions. Core samples were collected three weeks after construction to evaluate the initial interlayer shear strength (ISS) for typical construction conditions in cold regions. Although the ISS values for all of the products, except one SS-1 section, varied in a narrow range, this does not indicate that all products will have a similar long-term performance. The modes of failure for the bond strength samples were classified into two types according to the shape and location of the failure surface: type A and type B. Failure type B indicates that the tack coat material can successfully provide sufficient bond strength to make the two AC lifts behave as one thick homogenous layer. The results showed that the failure mode should be included as an evaluation criterion in addition to ISS. The results showed that the energy required to reach peak shear stress is a comprehensive parameter that should also be considered when evaluating tack coat materials.
Tack coat materials, which are typically emulsified bituminous products, are used to provide a sufficient bond between asphalt concrete (AC) layers/lifts. Owing to construction limitations and severe temperature variations in cold regions, agencies are investigating the use of fast curing and non-tracking emulsions as tack coat materials. The objective of this study is to evaluate the performance of various tack coat products in cold climates. Several tack coat products were installed during a field study in Saskatchewan, Canada. The tack coat products included slow setting, medium setting, and three proprietary fast curing/non-tracking emulsions. Core samples were collected three weeks after construction to evaluate the initial interlayer shear strength (ISS) for typical construction conditions in cold regions. Although the ISS values for all of the products, except one SS-1 section, varied in a narrow range, this does not indicate that all products will have a similar long-term performance. The modes of failure for the bond strength samples were classified into two types according to the shape and location of the failure surface: type A and type B. Failure type B indicates that the tack coat material can successfully provide sufficient bond strength to make the two AC lifts behave as one thick homogenous layer. The results showed that the failure mode should be included as an evaluation criterion in addition to ISS. The results showed that the energy required to reach peak shear stress is a comprehensive parameter that should also be considered when evaluating tack coat materials.
참고문헌 (19)
Characterization of Pavement Layer Interfaces Romanoschi S. A 1999
Tack Coat Best Practice Asphalt Institute 2014
Rahman, Ali, Ai, Changfa, Xin, Chunfu, Gao, Xiaowei, Lu, Yang.
State-of-the-art review of interface bond testing devices for pavement layers: toward the standardization procedure.
Journal of adhesion science and technology,
vol.31,
no.2,
109-126.
Transportation Research Record: Journal of the Transportation Research Board Young Seo A. 119 2017
Mohammad, Louay N., Bae, Abraham, Elseifi, Mostafa A., Button, Joe, Scherocman, James A..
Evaluation of Bond Strength of Tack Coat Materials in Field : Development of Pull-Off Test Device and Methodology.
Transportation research record : journal of the transportation research board,
vol.2126,
no.1,
1-11.
Optimization of Tack Coat for HMA Placement Mohammad L. N. 2012
Mohammad, Louay N., Raqib, M., Huang, Baoshan.
Influence of Asphalt Tack Coat Materials on Interface Shear Strength.
Transportation research record : journal of the transportation research board,
vol.1789,
no.1,
56-65.
Standard Method of Test for Determining the Interlayer Shear Strength (ISS) of Asphalt Pavement Layers American Association of State Highway and Transportation Officials (AASHTO) TP 114-15 2015
Mahmoud, Aiman, Coleri, Erdem, Batti, James, Covey, David.
Development of a field torque test to evaluate in-situ tack coat performance.
Construction & building materials,
vol.135,
377-385.
Hakimzadeh, Salman, Buttlar, William G., Santarromana, Rudolph.
Shear- and Tension-Type Tests to Evaluate Bonding of Hot-Mix Asphalt Layers with Different Tack Coat Application Rates.
Transportation research record : journal of the transportation research board,
vol.2295,
no.1,
54-62.
Mohammad, Louay N., Bae, Abraham, Elseifi, Mostafa A., Button, Joe, Patel, Nachiketa.
Effects of Pavement Surface Type and Sample Preparation Method on Tack Coat Interface Shear Strength.
Transportation research record : journal of the transportation research board,
vol.2180,
no.1,
93-101.
Das, Ramendra, Mohammad, Louay N., Elseifi, Mostafa, Cao, Wei, Cooper Jr., Samuel B..
Effects of Tack Coat Application on Interface Bond Strength and Short-Term Pavement Performance.
Transportation research record : journal of the transportation research board,
vol.2633,
1-8.
Mohammad, Louay N., Hassan, Marwa, Patel, Nachiketa.
Effects of Shear Bond Characteristics of Tack Coats on Pavement Performance at the Interface.
Transportation research record : journal of the transportation research board,
vol.2209,
no.1,
1-8.
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