scholarly journals A Study on Characteristics of Fine Particle Distribution at Cut Slope and Fill Slope Comprising Weathered Granite

2018 ◽  
Vol 67 (3) ◽  
pp. 346-353 ◽  
Author(s):  
Hiroyasu OHTSU ◽  
Pipatpongsa THIRAPONG ◽  
Takafumi KITAOKA ◽  
Shunichiro ITO ◽  
Mitsuru YABE ◽  
...  
Keyword(s):  
Fine Particle ◽  
Particle Distribution ◽  
Cut Slope ◽  
Weathered Granite ◽  
Fill Slope

scholarly journals Characteristics of Fine Particle Distribution at Cut Slope and Fill Slope Comprising Weathered Granite

2018 ◽  
Vol 59 (11) ◽  
pp. 1723-1730
Author(s):  
Hiroyasu Ohtsu ◽  
Thirapong Pipatpongsa ◽  
Takafumi Kitaoka ◽  
Shunichiro Ito ◽  
Mitsuru Yabe ◽  
...  
Keyword(s):  
Fine Particle ◽  
Particle Distribution ◽  
Cut Slope ◽  
Weathered Granite ◽  
Fill Slope

scholarly journals Evaluating the Effectiveness of Mulching for Reducing Soil Erosion in Cut Slope and Fill Slope of Forest Roads in Hyrcanian Forests

2021 ◽  
Vol 42 (2) ◽  
pp. 259-268
Author(s):  
Ahmad Solgi ◽  
Ramin Naghdi ◽  
Eric K. Zenner ◽  
Vahid Hemmati ◽  
Frashad Keivan Behjou ◽  
...  
Keyword(s):  
Surface Runoff ◽  
Soil Loss ◽  
Cut Slope ◽  
Forest Roads ◽  
Runoff Volume ◽  
Side Slope ◽  
Cut Slopes ◽  
Runoff And Soil Loss ◽  
Mulch Cover ◽  
Fill Slope

Forest operations often enhance runoff and soil loss in roads and skid trails, where cut slopes and fill slopes are the most important source of sediment. This study evaluated the effectiveness of four erosion control treatments applied to cut slope and fill slope segments of forest roads of different ages in the Hyrcanian forest in northern Iran. The treatment combinations, each replicated three times, included four classes of mulch cover (bare soil [BS], wood chips cover [WCH], sawdust cover [SC], and rice straw cover [RSC]), two levels of side slope (cut slope and fill slope), two levels of side slope gradient (20–25% and 40–45%), and three levels of road age (three, 10 and 20 years after construction). Mulch cover treatments significantly reduced average surface runoff volume and sediment yield compared to BS. Regardless of erosion control treatment, greater surface runoff volume and soil loss under natural rainfall occurred on steeper slope gradients in all road age classes and decreased with increasing road age on both slope gradients. On cut slopes, average runoff and soil loss from the plots covered with WCH (17.63 l per plot, 2.43 g m–2) was lower than from those covered with SC (22.81 l per plot, 3.50 g m–2), which was lower than from those covered with RSC (29.13 l per plot, 4.41 g m–2 and BS (34.61 l per plot, 4.94 g m–2). On fill slopes, average runoff and soil loss from the plots covered with WCH (14.13 l per plot, 1.99 g m–2) was lower than from plots covered with SC (20.01 l per plot, 3.23 g m–2), which was lower than from plots covered with RSC (24.52 l per plot, 4.06 g m–2) and BS (29.03 l per plot, 4.47 g m–2). Surface cover successfully controlled erosion losses following road construction, particularly on steep side slopes with high erosion potential.

Influence of Fe-rich particles on microstructure evolution, texture and mechanical properties of Al–Mg–Si–Cu alloys

2020 ◽  
Vol 117 (5) ◽  
pp. 508
Author(s):  
Libo Yu ◽  
Lin Chen ◽  
Hebin Wang ◽  
Xiaofeng Wang ◽  
Wenfei Peng ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Microstructure Evolution ◽  
Fine Particle ◽  
Particle Distribution ◽  
Solution Treatment ◽  
Alloy Sheet ◽  
Grain Structure ◽  
Cu Alloys ◽  
Solution Treated ◽  
Equiaxed Grain

The influence of Fe-rich particles on the microstructure evolution, texture and mechanical properties of Al–Mg–Si–Cu alloys was investigated by means of microstructure, texture and mechanical property analysis in the present study. The results show that Fe-rich particles have a significant influence on the microstructure evolution, texture, and final mechanical properties. Although both alloy sheets with different numbers of Fe-rich particles possess the similar microstructure including grain structure and fine particle distribution before solution treatment, the alloy sheet with a large number of Fe-rich particles possesses finer equiaxed grain structure in comparison with the alloy sheet with a medium number of Fe-rich particles after solution treatment. The solution treated alloy sheet with a medium number of Fe-rich particles is mainly comprised of CubeND {001}<310> orientation, while the solution treated alloy sheet with a large number of Fe-rich particles possesses weaker texture consisting of CubeND and Goss {110}<001> orientations. Fe-rich particles are beneficial to improve yield strength, ultimate tensile strength and r value, whereas reduce n and Δr values. Finally, the effect of Fe-rich particles on recrystallization microstructure and texture was analyzed.

A simple route for the preparation of red phosphorus microcapsule with fine particle distribution

2008 ◽  
Vol 62 (21-22) ◽  
pp. 3745-3747 ◽  
Author(s):  
Haitao Wang ◽  
Xiangfu Meng ◽  
Bin Wen ◽  
Xiaowei Gao ◽  
Shimin Zhang ◽  
...  
Keyword(s):  
Fine Particle ◽  
Particle Distribution ◽  
Red Phosphorus ◽  
Simple Route

EVOLUTION OF THE FINE PARTICLE DISTRIBUTION IN THE OUTFLOW OF A CITY

2001 ◽  
Vol 32 ◽  
pp. 193-194 ◽  
Author(s):  
W. Birmili ◽  
D. Galgon ◽  
A. Wiedensohler ◽  
K. Müller ◽  
T.W. Choularton ◽  
...  
Keyword(s):  
Fine Particle ◽  
Particle Distribution

Simplified Descriptive Scheme and Classification System for the Logging of Cut Slope Faces

1986 ◽  
Vol 2 (1) ◽  
pp. 253-260 ◽  
Author(s):  
T. I. Gamon ◽  
R. P. Finn
Keyword(s):  
Hong Kong ◽  
Classification System ◽  
Site Investigation ◽  
Granitic Rocks ◽  
Site Formation ◽  
Cut Slope ◽  
Weathered Granite ◽  
Soil Slopes ◽  
The Stability ◽  
Cut Slopes

AbstractA simplified descriptive scheme and classification system is currently being used for the systematic logging of cut slopes for a 22 ha site formation project in weathered granitic rocks in Hong Kong.The site formation comprises the removal of some 1.5 million m3 of soft granitic soil and 3.5 million m3 of sound rock, and the formation of approximately 60,000 m2 of slope face. The cut slope faces are logged as they are exposed, and the slope protection and stabilisation works designed and installed as the site is lowered.A simplified descriptive scheme was considered essential to reduce the time for logging and eliminate the need for specialist logging personnel.Existing descriptive schemes were compared and the most useful, compatible indices selected. Additional indices from other authors were added where appropriate. This descriptive scheme was simplified after the site investigation stage of the works and the resultant scheme checked against the faces exposed during the excavation of 300,000 m3 of weathered granite as part of the advanced works.The finalised simplified scheme was documented as a manual, which has been used on site to standardise the descriptions, abbreviations and presentation. Once logged, the exposed weathered profile is classified into zones, and the distribution of the zones compared with a number of standard profiles to rapidly assess the stability of the ‘soil’ slopes.To date, 40,000 m2 of slope face have been logged at a scale of 1:100, and appropriate slope protection and stabilisation works designed and installed.

scholarly journals Novel Method for Measuring Fine Particle Distribution in Shock-Induced Atomization

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Tokiha Yada ◽  
Kyohei Mizuno ◽  
Tomohiro Kamiya ◽  
Makoto Asahara ◽  
Takeshi Miyasaka
Keyword(s):  
Fine Particle ◽  
Particle Distribution ◽  
Novel Method

Fine Particle Mass Monitoring with Low-Cost Sensors: Corrections and Long-Term Performance Evaluation

2019 ◽  
Author(s):  
Carl Malings ◽  
Rebecca Tanzer ◽  
Aliaksei Hauryliuk ◽  
Provat K. Saha ◽  
Allen L. Robinson ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Fine Particle ◽  
Low Cost ◽  
Particle Mass ◽  
Long Term Performance ◽  
Term Performance

179. Characterization of Fine Particle Emissions in an Engine Plant

2006 ◽  
Author(s):  
W. Heitbrink ◽  
T. Peters ◽  
D. Evans ◽  
T. Slavin
Keyword(s):  
Fine Particle ◽  
Particle Emissions
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