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Showing 1 to 11 of 11 for “"Dynamic shear rheometer (DSR)"”.
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Mechanistic service life prediction of rigid pavement joint sealant: a new laboratory testing technique
… machine, was designed to transfer applied cyclic shear deflection to a sealant sandwiched between two 51 x 51 x 51 mm portland cement concrete (PCC) cubes at a constant horizontal deflection. The new testing method simulates field conditions where shear deflection is caused by vehicular loading, …
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Correlation between multiple stress creep recovery (MSCR) results and polymer modification of binder
… (MSCR), offers a simpler procedure using the Dynamic Shear Rheometer (DSR), thus it does not require the expense of purchase additional testing equipment. The objective of this study is to determine the feasibility of using MSCR as a specification for binder testing. Upon testing a variety of …
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Cracking potential of short- and long-term aged binder with various levels of ABR
… and fatigue cracking were derived from various dynamic shear rheometer (DSR) and bending beam rheometer (BBR) tests. Binders from five AC designed with varying ABR percentages (from 0 to 60%) were recovered using the standard Rotovap test procedure. The base binder used in the AC design and …
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Performance Characteristics of Polyethylene Terephthalate (PET) Modified Asphalt
… on wet process blends produced with a high shear mixer at PET contents of 5, 10, and 15 percent by weight of the binder. Dynamic Shear Rheometer (DSR) and Rotational Viscosity (RV) tests were performed on the unaged and Rolling Thin Film Oven (RTFO) aged mixtures. The mixture tests were …
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Comparative Study of the Effects of Physical and Chemical Aging on Extracted and Recovered Asphalt Binders from Some Municipal and Provincial Roads in Canada
… using conventional Superpave® methods such as Dynamic Shear Rheometer (DSR) and Bending Beam Rheometer (BBR) and the improved Ministry of Transportation of Ontario methods (LS-308 Extended Bending Beam Rheometer (eBBR) and LS-299 Double-Edge Notched Tension (DENT) test). Chemical test methods …
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Investigating and Understanding the Effects of Reclaimed Asphalt Pavement and Shingles on the Rheology and Performance Grading of Asphalt Cement.
… modification and aging were measured using the Dynamic Shear Rheometer (DSR). The resistance to fatigue cracking, permanent deformation, the performance at high and intermediate temperature were accessed using the DSR. The Fraass Breaking Point (FBP) instrument was used to determine the …
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Rheological and nanomechanical characterization of aging in polymer modified asphalt
… properties such as viscosity, phase angle, shear modulus, creep compliance, stiffness, etc. are determined using Dynamic Shear Rheometer (DSR) test, Multiple Stress Creep Recovery (MSCR) test, Bending Beam Rheometer (BBR) test, Rotational Viscosity (RV) test and the Direct Tension (DT) test. …
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EXPLORING THE MASTER CURVE PARAMETERS FOR EFFICIENT PERFORMANCE GRADING OF ASPHALT BINDERS FROM THE UNITED STATES OF AMERICA
… of a wide range of binders. This study utilized Dynamic Shear Rheometer (DSR) testing to obtain rheological indicators such as Tδ=30°, Tδ=45°, Intermediate Temperature Performance Grade (ITPG), and master curve parameters under slow and fast cooling rates. Significant correlations between DSR …
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A study of Asphalt Aging Behavior Using Molecular Dynamics Simulations
… of studying the molecular structures and their dynamic behavior in asphalt. Therefore, Molecular Dynamics (MD) simulation method is used in this study to understand how the chemical composition and property changes of asphalt after oxidative aging affect the physical, thermodynamic, rheological …
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Development of the Duomorph Asphalt Rheology Tester (DART): a self-contained, portable device for quality assurance testing of asphalt binders
… evaluated both as a surrogate test device to the Dynamic Shear Rheometer (DSR) and also as a device capable of directly estimating the AASHTO M320 Table 1 specification parameters—the complex shear modulus (G*) and phase angle (d). The first phase of the research evaluated the physical and …
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Laboratory characterization and field performance of hot in-place recycled mixtures
… rut resistance, respectively. On the other hand, dynamic Shear Rheometer (DSR) and Bending Beam Rheometer (BBR) tests were conducted for binder level investigation. The binder level tests showed that binder grades varied from very soft grade of PG 40-46 (Machesney 15-16) to as stiff as PG 76-28 …