This paper reports on the procedures of mix design preparation, production, placement, and performance evaluation first electrically conductive concrete (ECON) heated-pavement system (HPS) implemented at a U.S. airport. While ECON has drawn considerable attention as paving material for multi-functional pavements, including HPS, majority HPS applications studies have been limited to laboratory scale or include materials/methods that do not conform regulations enforced by airfield construction...

Millions of dollars are annually spent for ice or snow removal from the roadways and airport paved surfaces in cold regions. The presence on areas can cause traffic accidents financial loss because flight cancellations delays. For mitigating winter pavement maintenance issues, use superhydrophobic (super-water-repellent) coating techniques is gaining attention as a smart cost-effective alternative to traditional practices. This study focuses creating, characterizing, evaluating innovative...

This experimental study examines the influence of different sources and lengths carbon fiber (CF) on volumetric properties, volume resistivity, heat-generation efficiency electrically conductive asphalt concrete (ECAC). type has applications to pavement anti-icing deicing in critical areas such as airfields where having surfaces free ice snow is paramount importance. revealed that increasing CF length decreased ECAC air void, voids mineral aggregate, increased filled with asphalt. The source...

This study evaluates the influence of polymer-modification on induction heating capability asphalt mastic in a microwave field, and investigates how effectively this approach can be utilized for ice melting self-healing purposes. To end, different mixtures with mixing procedures were tested under field exposure capability, ice-melting ability, capacity. The made through warm-mix hot-mix four bituminous binders, including virgin (unmodified) same binder modified three types polymers. results...

Abstract Conventional snow removal strategies add direct and indirect expenses to the economy through profit lost due passenger delays costs, pavement durability issues, contaminating water runoff, so on. The use of superhydrophobic (super-water-repellent) coating methods is an alternative conventional ice practices for alleviating operations issues. As integrated experimental analytical study, this work focused on optimizing superhydrophobicity skid resistance hydrophobic coatings asphalt...

In Rosmarinic Acid (RA) is a phenolic acid which has many biological activities such as antioxidant, anti inflammatory and viral effects. the present study, we have studied Herpes simplex type 1 (HSV-1) effect of methanolic extract Zataria multiflora been standardized on basis RA content. Methanolic Zatria was prepared by maceration method. content plant measured spectrophotometry method using calibration curve RA. Maximum non Toxic Concentration (MNTC) determined neutral red MNTC lower...

Electrically-heated pavements have attracted attention as alternatives to the traditional ice/snow removal practices. Electrically conductive polymer-carbon composite coatings provide promising properties for this application. Based on concept of joule heating, can be utilized a resistor that generates heat by electric current and increases surface temperature melt ice snow pavement surface. This research investigates feasibility applying an electrically coating made with Polyurethane (PU)...

Application of super ice/water-repellent materials on pavement surfaces has increasingly drawn attention as a smart and cost-effective method for ice snow removal. This study focused fabricating evaluating icephobic coatings asphalt concrete pavements obtaining ice- snow-free biomimetic surfaces. After statistical design, the layer by (LBL) was used spray depositing polytetrafluoroethylene (PTFE) at variable dosages PTFE different times. The degree hydrophobicity/icephobicity coated...

Sustainable super water/ice-repellent pavements are gaining attention as a smart solution for mitigating problems associated with winter pavement maintenance of roadways and airfields. Such can facilitate surface drainage prevent or curb ice formation snow accumulation. While conventional method melting is the use deicing chemicals, such materials transfer to nanotechnology-based influence their water/ice-repellency by changing chemistry water ice. This study focused on characterizing degree...

Background: Co-infection of human immunodeficiency virus (HIV) with hepatitis accelerates liver injury. Recently, there has been paid more attention to micro RNAs (miRs) as new tools for determination Previous studies revealed that miR-29 inhibits HIV replication. It also shown decreases in hepatocytes C (HCV) infected patients. The present study aimed determine the miR-29a-5p expression a possible diagnostic marker HIV- and HIV-HCV co-infected Methods: In this cross-sectional study, blood...

Steel plate shear walls are recently used as efficient seismic lateral resisting systems. These resistant structures implemented to provide more strength, stiffness and ductility in limited space areas. In this study, the behavior of multi-story steel frames with investigated for buildings 4, 8, 12 16 stories using verified computational modeling platforms. Different number moment bays distinctive lengths effectively determine deflection amplification factor low-rise high-rise structures....

One of the emerging technologies for producing sustainable ice-and snow-free pavements is use electrically-conductive surface courses, e.g., asphalt concrete (ECAC) that can melt ice and snow through resistive heating. Modifying mastic in with materials a promising approach high-quality ECAC. The objective this study to evaluate electrical conductivity heat generation efficiency (ECAM) specimens at below-freezing temperature—simulating harsh weather conditions North America during...