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RISWeathering Mechanisms in Bitumen Modified with Polyphosphoric Acid
Publisher: ASCE
Abstract: This study examines the effect of weathering on bituminous composites containing polyphosphoric acid (PPA). PPA has been commonly used in bitumen to increase bitumen’s stiffness and elastic properties. However, the effect ...
Development of a Pressurized Blister Test for Interface Characterization of Aggregate Highly Polymerized Bituminous Materials
Publisher: American Society of Civil Engineers
Abstract: Bituminous crack sealants are commonly used for pavement maintenance. While cracks in pavement are inevitable, sealing the cracks helps maintain the integrity of the pavement by preventing water and debris from entering ...
Effect of Pavement Type on Overlay Roughness Progression
Publisher: American Society of Civil Engineers
Abstract: This paper investigates the impact of overlay type (asphalt and concrete) on the progression of pavement roughness as described by the international roughness index (IRI). Pavement roughness is defined as deformities or ...
Investigating Aging and Rejuvenation Mechanism of Biomodified Rubberized Bitumen
Publisher: ASCE
Abstract: This study examines the effects of five biomodifiers on the aging and rejuvenation of biomodified rubberized bitumen. It further discusses the challenges associated with restoration and reuse of aged bitumen, especially ...
Introducing a New Test to Examine Moisture Susceptibility at the Interface of Bitumen and Stones
Publisher: ASCE
Abstract: This paper introduces a novel test method, the moisture-induced shear thinning index (MISTI), to evaluate the susceptibility to moisture damage at the interface of bitumen and siliceous stone aggregates. In the MISTI test, ...
Machine Learning Approach to Predict International Roughness Index Using Long-Term Pavement Performance Data
Publisher: ASCE
Abstract: On-time pavement maintenance and rehabilitation are required to maintain or improve pavement roughness, which is an indicator of pavement performance and road safety. Better prediction of maintenance time can help in budget ...
Effect of Taconite on Healing and Thermal Characteristics of Asphalt Binder
Publisher: ASCE
Abstract: Based on the positive effect of metal material on the healing property of asphalt binder, this study evaluated the merits of using taconite (an iron-containing filler from iron-mine tailings) to promote the healing performance ...
Assessing the Potential for Sustainable Cold-Mix Asphalt Mixtures Based on Crumb-Rubberized Asphalt Binder
Publisher: ASCE
Abstract: Crumb-rubberized asphalt (CRA) binder has been widely used for several decades because it provides a nonhazardous disposal method for scrap tires and it improves some engineering properties of asphalt pavement. The energy ...
Chemical Characterization of Biobinder from Swine Manure: Sustainable Modifier for Asphalt Binder
Publisher: American Society of Civil Engineers
Abstract: This paper presents the production, modification, and characterization of biobinder from swine manure. A hydrothermal process was used to convert swine manure to a bio-oil. The bio-oil was fractionated to extract water, ...