Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Articles Article Faculty Publications -Articles Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Analysis of the chemical properties and high-temperature rheological properties of MDI modified bio-asphalt Subject The topic of the resource Bio-asphalt; Chemical characteristics; MDI; MDI modified bio-asphalt; Rheological properties Description An account of the resource As an environmentally friendly material, bio-oil is employed to partially replace non-renewable petroleum asphalt, but its addition weakens the high-temperature non-deformability of petroleum asphalt. Therefore, the 4,4?-diphenylmethane diisocyanate (MDI) was employed as a chemical modifier of bio-asphalt to improve its high temperature rheological properties. The MDI with addition of 0.5%, 1%, 2%, 4% by weight, and the bio-oil with addition of 12% were used to obtain the MDI modified bio-asphalts. The chemical reaction mechanism between the MDI and bio-asphalt was analyzed by employing the Fourier-transform infrared spectroscopy (FTIR) and gel permeation chromatography (GPC) tests. Meanwhile, the rotational plate viscosity (RPV) test, the temperature sweep test, and the multiple stress creep and recovery (MSCR) test were employed to evaluate the high-temperature rheological properties of the MDI modified bio-asphalts. Moreover, the relationships between the chemical reaction mechanism and high-temperature rheological parameters of MDI modified bio-asphalt were established. Test results show that a nucleophilic addition reaction occurred between the MDI and the active hydrogen of bio-asphalt to form urethane chains, which increased the content of macromolecular polymers in the bio-asphalt. The MDI increased the G*/sin? (rutting factor) and the E(?) (visco-flow activation energy) of the bio-asphalt, but decreased its permanent strain and Jnr (non-recoverable creep compliance). Therefore, the MDI modifier effectively enhanced the permanent non-deformability of the bio-asphalt. Both IUrethane and LMS were positively correlated with the rutting factor, viscosity and 1/Jnr, and had significant correlations at a significance level of 0.05. Furthermore, the optimal ratio of MDI to bio-oil was determined to be 1:6 by mass. 2020 Elsevier Ltd Creator An entity primarily responsible for making the resource Shao L.; Wang H.; Zhang R.; Zheng W.; Hossiney N.; Wu C. Source A related resource from which the described resource is derived Construction and Building Materials, Vol-267 Publisher An entity responsible for making the resource available Elsevier Ltd Date A point or period of time associated with an event in the lifecycle of the resource 2021-01-01 Identifier An unambiguous reference to the resource within a given context <a href="https://doi.org/10.1016/j.conbuildmat.2020.121044" target="_blank" rel="noreferrer noopener">https://doi.org/10.1016/j.conbuildmat.2020.121044</a> <br /><br /><a href="https://www.scopus.com/inward/record.uri?eid=2-s2.0-85092241355&amp;doi=10.1016%2Fj.conbuildmat.2020.121044&amp;partnerID=40&amp;md5=7d7234406f6239c5f8b9735bd92816fa" target="_blank" rel="noreferrer noopener">https://www.scopus.com/inward/record.uri?eid=2-s2.0-85092241355&amp;doi=10.1016%2fj.conbuildmat.2020.121044&amp;partnerID=40&amp;md5=7d7234406f6239c5f8b9735bd92816fa</a> Rights Information about rights held in and over the resource Restricted Access Relation A related resource ISSN: 9500618; CODEN: CBUME Format The file format, physical medium, or dimensions of the resource Online Language A language of the resource English Type The nature or genre of the resource Article Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Shao L., Key Laboratory of Transport Industry of Road Structure and Materials (Xi'an), Chang'an University, South Erhuan Middle Section, Xi'an City, 710064, Shaanxi Province, China; Wang H., Key Laboratory of Transport Industry of Road Structure and Materials (Xi'an), Chang'an University, South Erhuan Middle Section, Xi'an City, 710064, Shaanxi Province, China; Zhang R., School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China; Zheng W., Key Laboratory of Transport Industry of Road Structure and Materials (Xi'an), Chang'an University, South Erhuan Middle Section, Xi'an City, 710064, Shaanxi Province, China; Hossiney N., Faculty of Engineering, CHRIST (Deemed to be University), Bangalore, 560074, India; Wu C., Jiangsu Transportation Institute (JSTI) Group, Jiangsu, 210017, China