scholarly journals Dissolution Resistance Property of Modified Asphalt Waterproofing Sheet Coated with Polyamide Film by SEM-EDX Analysis

2017 ◽  
Vol 17 (5) ◽  
pp. 437-444
Author(s):  
Ki-Won An ◽  
Jae-Yong Yoo ◽  
Sang-Keun Oh
Keyword(s):  
Modified Asphalt ◽  
Edx Analysis ◽  
Resistance Property ◽  
Polyamide Film

Research on the Pavement Performance and Mechanism of Rock Asphalt Modified Asphalt Mixture

CICTP 2020 ◽  
2020 ◽  
Author(s):  
Yong Yang ◽  
Peng Huang ◽  
Wen Zhou ◽  
Haiting Liu ◽  
Lingling Hong
Keyword(s):  
Asphalt Mixture ◽  
Pavement Performance ◽  
Modified Asphalt ◽  
Performance And Mechanism

Performance Evaluation of Polymer Modified Asphalt Mixtures

2014 ◽  
Vol 1 (2) ◽  
pp. 33-50
Author(s):  
Eslam Magdy Mohammed Deef-Allah ◽  
◽  
Ahmed Mohamady ◽  
Keyword(s):  
Performance Evaluation ◽  
Asphalt Mixtures ◽  
Modified Asphalt ◽  
Polymer Modified Asphalt

SEM-EDX ANALYSIS OF GARNETS AND THEIR INCLUSIONS FROM THE LOWER-MOST LAYER OF THE WOODVILLE HILL LACCOLITH RHYOLITE IN NORTHERN BLACK HILLS, SOUTH DAKOTA

2016 ◽  
Author(s):  
Shannon K. Hunter ◽  
◽  
Jacob Sounik ◽  
Tathagata Dasgupta ◽  
David B. Hacker
Keyword(s):  
South Dakota ◽  
Black Hills ◽  
Edx Analysis

Evaluation of polyphosphoric acid on the performance of polymer modified asphalt binders

2020 ◽  
Vol 137 (34) ◽  
pp. 48984 ◽  
Author(s):  
Shengjie Liu ◽  
Shengbo Zhou ◽  
Aihong Peng
Keyword(s):  
Polyphosphoric Acid ◽  
Asphalt Binders ◽  
Modified Asphalt ◽  
Polymer Modified Asphalt

scholarly journals Effects of Long Durations of RF–Magnetron Sputtering Deposition of Hydroxyapatite on Titanium Dental Implants

2021 ◽  
Author(s):  
Ihab Nabeel Safi ◽  
Basima Mohammed Ali Hussein ◽  
Hikmat J. Aljudy ◽  
Mustafa S. Tukmachi
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Magnetron Sputtering ◽  
Dental Implants ◽  
Substrate Surface ◽  
Rf Magnetron Sputtering ◽  
P Value ◽  
Edx Analysis ◽  
Significant Difference ◽  
Scanning Electron

Abstract Objectives Dental implant is a revolution in dentistry; some shortages are still a focus of research. This study use long duration of radiofrequency (RF)–magnetron sputtering to coat titanium (Ti) implant with hydroxyapatite (HA) to obtain a uniform, strongly adhered in a few micrometers in thickness. Materials and Methods Two types of substrates: discs and root form cylinders were prepared using a grade 1 commercially pure (CP) Ti rod. A RF–magnetron sputtering device was used to coat specimens with HA. Magnetron sputtering was set at 150 W for 22 hours at 100°C under continuous argon gas flow and substrate rotation at 10 rpm. Coat properties were evaluated via field emission scanning electron microscopy (FESEM), scanning electron microscopy–energy dispersive X-ray (EDX) analysis, atomic force microscopy, and Vickers hardness (VH). Student’s t-test was used. Results All FESEM images showed a homogeneous, continuous, and crack-free HA coat with a rough surface. EDX analysis revealed inclusion of HA particles within the substrate surface in a calcium (Ca)/phosphorus (P) ratio (16.58/11.31) close to that of HA. Elemental and EDX analyses showed Ca, Ti, P, and oxygen within Ti. The FESEM views at a cross-section of the substrate showed an average of 7 µm coat thickness. Moreover, these images revealed a dense, compact, and uniform continuous adhesion between the coat layer and the substrate. Roughness result indicated highly significant difference between uncoated Ti and HA coat (p-value < 0.05). A significant improvement in the VH value was observed when coat hardness was compared with the Ti substrate hardness (p-value < 0.05). Conclusion Prolonged magnetron sputtering successfully coat Ti dental implants with HA in micrometers thickness which is well adhered essentially in excellent osseointegration.

Microscopic performance of modified asphalt based on aging

2021 ◽  
Vol 279 ◽  
pp. 122429
Author(s):  
Yan Zhou ◽  
Lei Du ◽  
Xiaolan Liu ◽  
Kai Zhang ◽  
Peng Xu ◽  
...  
Keyword(s):  
Modified Asphalt

Performance of SBS modifier-crumb rubber composite modified asphalt used as an anti-wear layer of perpetual pavement

2021 ◽  
pp. 1-15
Author(s):  
Zhihao Yang ◽  
Linbing Wang ◽  
Xu Bin ◽  
Dongwei Cao ◽  
Jianfeng Li ◽  
...  
Keyword(s):  
Crumb Rubber ◽  
Modified Asphalt ◽  
Rubber Composite ◽  
Perpetual Pavement

scholarly journals Material Properties and Environmental Benefits of Hot-Mix Asphalt Mixes Including Local Crumb Rubber Obtained from Scrap Tires

Environments ◽  
2021 ◽  
Vol 8 (6) ◽  
pp. 47
Author(s):  
Lim Min Khiong ◽  
Md. Safiuddin ◽  
Mohammad Abdul Mannan ◽  
Resdiansyah
Keyword(s):  
Asphalt Binder ◽  
Crumb Rubber ◽  
Environmental Benefits ◽  
Asphalt Binders ◽  
Rubber Content ◽  
Scrap Tires ◽  
Asphalt Mixes ◽  
Temperature Resistance ◽  
Modified Asphalt ◽  
Marshall Stability

This paper presents the results of a laboratory-based experimental investigation on the properties of asphalt binder and hot-mix asphalt (HMA) mixes modified by locally available crumb rubber, which was used as a partial replacement of asphalt by weight. In this study, fine crumb rubber with a particle size in the range of 0.3–0.6 mm, obtained from scrap tires, was added to the asphalt binder through the wet process. Crumb rubber contents of 5%, 10%, 15%, and 19% by weight of asphalt were added to the virgin binder in order to prepare the modified asphalt binder samples, while the unmodified asphalt binder was used as the control sample. The crumb rubber modified binder samples were examined for measuring viscosity indirectly using the penetration test, and temperature resistance using the softening point test. Later, both the modified and unmodified asphalt binders were used to produce HMA mixes. Two categories of HMA mix commonly used in Malaysia—namely, AC 14 (dense-graded) and SMA 14 (gap-graded)—were produced using the modified asphalt binders containing 5%, 10%, 15%, and 19% crumb rubber. Two AC 14 and SMA 14 control mixes were also produced, incorporating the unmodified asphalt binder (0% crumb rubber). All of the AC 14 and SMA 14 asphalt mixes were examined in order to determine their volumetric properties, such as bulk density, voids in total mix (VTM), voids in mineral aggregate (VMA), and voids filled with asphalt (VFA). In addition, the Marshall stability, Marshall flow, and stiffness of all of the AC 14 and SMA 14 mixes were determined. Test results indicated that the modified asphalt binders possessed higher viscosity and temperature resistance than the unmodified asphalt binder. The viscosity and temperature resistance of the asphalt binders increased with the increase in their crumb rubber content. The increased crumb rubber content also led to improvements in the volumetric properties (bulk density, VTM, VMA, and VFA) of the AC 14 and SMA 14 mixes. In addition, the performance characteristics of the AC 14 and SMA 14 mixes—such as Marshall stability, Marshall flow, and stiffness—increased with the increase in crumb rubber content. However, the AC 14 mixes performed much better than the SMA 14 mixes. The overall research findings suggest that crumb rubber can be used to produce durable and sustainable HMA mixes, with manifold environmental benefits, for use in flexible pavements carrying the heavy traffic load of highways.

Sign in / Sign up

Export Citation Format

Share Document