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Title Development of adhesive test for hot-poured crack sealants
Publication Date
Date Accessioned
Degree MS
Discipline/Department Civil Engineering
Degree Level thesis
University/Publisher University of Illinois – Urbana-Champaign
Abstract Sealants may be defined as the flexible materials used in cracks and/or joints preventing moisture infiltration into the pavements. These materials should acquire certain adhesive and cohesive properties to remain intact in the cracks and/or joints. Hot-poured applied crack sealants are one of the most common preventive techniques in North America that extend pavement life. However, most of these applied sealants fail due to their poor adhesion to crack walls. Various tests are currently used to measure the sealants’ adhesive properties. Most of these tests apply a mechanical load (tensile, shear, bending, torsion, and peeling) or study the chemistry at the interfaces, especially the molecular and interatomic forces generated at the interfaces. These tests, however, either lack a real correlation with field performance or have not yet been validated. This study introduces the development of a procedure for an adhesive prediction test, tensile adhesive method (TAM). It also evaluates the feasibility of two other tests: the single end notch interface (SENI) test and sessile drop method (SDM). TAM test, which is a modified version of the current crack sealant adhesion tester (CSAT) test, shows consistent results among specimens and users. In addition, it was successful in capturing the effect of temperature changes and aging effects. It is concluded that good adhesive properties of hot-poured crack sealant are required for desired field performance, which can be predicted from lab-aged specimen test results. However, other factors affecting sealant performance should be considered, including sealant installation, stiffness, and other preventive maintenance applied to the pavement.
Subjects/Keywords Adhesion; Tensile adhesive method (TAM); Adhesive Tests; Temperature Effect on Adhesion; Aging Effect on Adhesion; Adhesive Mechanisms
Contributors Al-Qadi, Imad (advisor); Ozer, Hasan (committee member)
Language en
Rights Copyright 2016 Mohammed Sawalha
Country of Publication us
Record ID handle:2142/90692
Repository uiuc
Date Indexed 2020-03-09
Grantor University of Illinois at Urbana-Champaign
Issued Date 2016-04-29 00:00:00

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