Experimental Study on Interfacial Frictional Properties of Geogrid Reinforced Pond Ash

2019 ◽  
pp. 131-140
Author(s):  
Mogili Sudhakar ◽  
M. Heeralal ◽  
G. Kalyan Kumar ◽  
Pandu Kurre
Keyword(s):  
Experimental Study ◽  
Pond Ash ◽  
Frictional Properties

scholarly journals Interface Frictional Properties of Geogrid-Reinforced Pond Ash

2019 ◽  
Vol 8 (2) ◽  
pp. 1978-1983
Keyword(s):  
Power Plants ◽  
Thermal Power ◽  
Reinforced Soil ◽  
Friction Mechanism ◽  
Pond Ash ◽  
Interface Friction ◽  
Frictional Properties ◽  
Alternative Material ◽  
Backfill Materials ◽  
Stiffness Characteristics

The performance of any reinforced soil (RS) structure mainly depends on the soil-geosynthetic interface friction mechanism. Nowadays, due to the non-availability of conventional backfill materials and unsuitability of locally available soils, the exploration has started to find an alternative material for backfilling. One of such materials is pond ash, generated as a waste by-product from thermal power plants. In this regard, the present work is aimed to find the interfacial frictional characteristics of geogrid reinforced pond ash in terms of coefficient of interface friction (Ci ) and pullout frictional factor (f*) by conducting large direct shear test and pullout tests using two biaxial geogrids (GG1 and GG2) of different stiffnesses. From the experimental results, it was observed that the coefficient of interface friction (Ci ) values were in the range of 0.84 to 0.66 and pullout frictional factor (f*) values were in the range of 0.43 to 0.28 for the applied normal stresses of 50 kPa, 100 kPa and 150 kPa respectively. Further, GG1 shows higher frictional characteristics compared to GG2 because of its structural geometry and stiffness characteristics.

Experimental study of the frictional properties of friction spun yarns

2003 ◽  
Vol 88 (10) ◽  
pp. 2450-2454 ◽  
Author(s):  
S. S. Ramkumar ◽  
L. Shastri ◽  
R. W. Tock ◽  
D. C. Shelly ◽  
M. L. Smith ◽  
...  
Keyword(s):  
Experimental Study ◽  
Frictional Properties ◽  
Spun Yarns

Experimental study on the restoration from a tilt-azimuth series for improvement in resolution

1995 ◽  
Vol 53 ◽  
pp. 636-637
Author(s):  
Norio Baba ◽  
Norihiko Ichise ◽  
Syunya Watanabe
Keyword(s):  
Experimental Study ◽  
Spherical Aberration ◽  
Incident Beam ◽  
Optical Parameters ◽  
Beam Tilting ◽  
Illumination Method ◽  
Restoration Method ◽  
Illumination Mode

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.

Sign in / Sign up

Export Citation Format

Share Document