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تعداد نتایج: 812159 فیلتر نتایج به سال:
Nanomaterials exhibit novel properties and profound attributes as an additive in asphalt binder modification. However, the application of nano-silica binders mixture modification is still limited, further research required. Along these lines, this work, with a content from 2% to 8% increment was utilized modifying bitumen type C320, which considered most conventional used Western Australia road...
This study explores the effects of polyphosphoric acid (PPA) on rheological performance styrene butadiene (SBS) and crumb rubber (CR) modified asphalt binders at high temperatures. Four PPA concentrations were selected: 0.4%, 0.8%, 1.2%, 1.6% by weight virgin asphalt, one SBS binder with 5% was used as a reference binder. Laboratory tests performed to simulate short-term long-term aging. Temper...
Bitumen emulsion has been widely used as the tack coat and surface treatment material for asphalt pavement. A major advantage of this is it does not require heating during construction. However, faces concern low mechanical strength, especially at high service temperatures. To improve strength bitumen emulsion, various research efforts have made to use waterborne epoxy resin a modifier produce ...
Additives are widely used to enhance the rheological and performance properties of asphalt binder satisfy demands extreme loading climatic conditions. Meanwhile, adding complexity behaviour that requires more time, effort, material resources during laboratory work. The purpose this research was use Artificial Neural Networks (ANNs) predict recovery (R) nonrecoverable compliance (Jnr) based on m...
High content SBS polymer modified asphalt (HCPMA) can serve as pavements under heavy traffic and a wide range of temperatures. However, the applicability validity standard rheological evaluation methods to characterize HCPMA are still unclear. In this study, influence on conventional properties behavior was analyzed. A higher improve performance grade binder PG100-34. The slope Jnr-σ linear cur...
The complete genome of methanol-utilizing Amycolatopsis methanolica strain 239T was generated, revealing a single 7,237,391 nucleotide circular chromosome with 7074 annotated protein-coding sequences (CDSs). Comparative analyses against the complete genome sequences of Amycolatopsis japonica strain MG417-CF17T, Amycolatopsis mediterranei strain U32 and Amycolatopsis orientalis strain HCCB10007 ...
In the road construction sector, CO2 emissions that affect global warming are, in most cases, from asphalt mixtures production activities are carried out at high temperature (above 160 °C). The research here presented aims to investigate physical-mechanical properties of mastics made up using jet grouting waste (JW) as a filler produced through both cold (40–50 °C) and hot mixing process. first...
Conventional asphalt concrete pavements have deteriorated rapidly due to the current increased traffic and extreme climate impacts. In addition upgrading in construction quality, there is an urgent need expand utilization of modified binders improve road capacity safety. The proposed research aims combine epoxy resin (ER) crumb rubber powder (CRP) contents into conventional Styrene-butadiene-st...
Dariush Mozaffarian, MD, DrPH, FAHA; Emelia J. Benjamin, MD, ScM, FAHA; Alan S. Go, MD; Donna K. Arnett, PhD, MSPH, FAHA; Michael J. Blaha, MD, MPH; Mary Cushman, MD, MSc, FAHA; Sandeep R. Das, MD, MPH; Sarah de Ferranti, MD, MPH; Jean-Pierre Després, PhD, FAHA; Heather J. Fullerton, MD, MAS; Virginia J. Howard, PhD, FAHA; Mark D. Huffman, MD, MPH, FAHA; Carmen R. Isasi, MD, PhD; Monik C. Jimén...
the major aim of this study was to investigate the relationship between iq, eq and test format in the light of test fairness considerations. this study took this relationship into account to see if people with different eq and iq performed differently on different test formats. to this end, 90 advanced learners of english form college of ferdowsi university of mashhad were chosen. they were ask...
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