Resilient and Permanent Deformation Response of Cement-Stabilized Pond Ash

2022 ◽  
Vol 34 (1) ◽  
Author(s):  
Anu Jose ◽  
J. Murali Krishnan ◽  
R. G. Robinson
Keyword(s):  
Permanent Deformation ◽  
Pond Ash ◽  
Deformation Response

Permanent deformation response parameters of asphalt mixtures for a new mix-confined repeated load test

2013 ◽  
Vol 20 (5) ◽  
pp. 1434-1442 ◽  
Author(s):  
Gong-yun Liao ◽  
Yi-wen Yang ◽  
Xiao-ming Huang ◽  
Jin-yuan Xiang
Keyword(s):  
Permanent Deformation ◽  
Asphalt Mixtures ◽  
Load Test ◽  
Deformation Response ◽  
Repeated Load

Research on the Relationship Between Surface Engineering and Deformation Response of Some Natural Polymeric Nanofibrous Systems. Possible Applications in Medicine

2017 ◽  
Vol 14 (1) ◽  
pp. 536-544
Author(s):  
Mirela Iorgoaiea Guignard ◽  
Diana Coman ◽  
Maricel Agop ◽  
Noureddine Ouerfelli ◽  
Dan Miricescu ◽  
...  
Keyword(s):  
Surface Engineering ◽  
Permanent Deformation ◽  
Relevant Information ◽  
Antimicrobial Substances ◽  
Deformation Response ◽  
Starting Point ◽  
3D Geometry ◽  
Antimicrobial Performance ◽  
The Relationship ◽  
Polymeric Supports

Since the bamboo derived nanocellulosic fibrous systems (used as covers for mattresses), come in contact with skin, the study is aiming to establish the relationship between their three D-dimensional architecture and permanent deformation. The composite should have a permanent deformation near to zero, in order to be as stable as possible, in terms of dimensional. Different types of bamboo derived nanocellulosic fibrous systems, whose surfaces have been modified/engineered under several irradiation conditions, were used. By analyzing the area of 1 cm2 with UST (Universal Surface Tester), different 3D diagrams were achieved. This type of surface investigation provides relevant information about permanent deformation response of the studied surface, for comfort purposes. In other terms, the roughness which is the parameter quantifying the 3D geometry of the systems surface, a correlation between deformation response and the roughness level could be established. Moreover, since there is a direct contact of this polymeric supports with skin, the outcomes of this research can be regarded as a perspective/starting point for a novel study. The level of roughness can be monitored, in order to obtain matrices with different hydrophobicity, consequently with potential antimicrobial performance. The more hydrophilic the polymeric matrix will be, the more the antimicrobial response/behaviour can be achieved. Some implications in medicine are also considered, because one of the most applied methods to fight infection would be to apply loading onto bamboo derived cellulosic supports that has the capability to release antimicrobial substances.

scholarly journals Correlation between Surface Engineering and Deformation Response of Some Natural Polymer Fibrous Systems

2018 ◽  
Vol 13 (2) ◽  
pp. 155892501801300 ◽  
Author(s):  
Narcisa Vrinceanu ◽  
Mirela Iorgoaiea Guignard ◽  
Christine Campagne ◽  
Stephane Giraud ◽  
Raluca Ioana Prepelita ◽  
...  
Keyword(s):  
Plasma Treatment ◽  
Surface Engineering ◽  
Permanent Deformation ◽  
Human Perception ◽  
Relevant Information ◽  
Natural Polymer ◽  
Air Plasma ◽  
Deformation Response ◽  
3D Surface ◽  
Air Plasma Treatment

Surfaces of bamboo derived cellulosic fibrous systems have been modified by air-plasma treatment. Their deformational response was studied to establish the relationship between their three-dimensional profile and permanent deformation as a measure of their comfort properties since the fibrous system made of natural polymer comes into contact with the skin. The composite should have a permanent deformation close to zero, in order to be, in terms of dimensions, as stable as possible. By analyzing the area of 1 cm2 using a Universal Surface Tester (UST), different 3D surface diagrams and surface roughness values were obtained. This type of surface investigation provides relevant information about the permanent deformation response of the studied surface, for comfort purposes. The deformation responses and roughness levels were studied (the roughness being the parameter quantifying the 3D geometry of the systems surface). The effect of air-plasma surface modification on the deformation response of bamboo derived cellulosic fibrous systems and optimization of their 3D surface structure to enhance comfort-related properties proved to be substantial. The surface modifications induced by air-plasma treatment are in a good correlation with the mechanical behavior. As expected, the roughness levels of samples studied using ball sensors are higher than those of specimens scanned using a papillary sensor. Knitted polymer fibrous matrix T1 shows a roughness level of 773 μm resulting from analyses using the ball sensor, while using the papillary sensor it was 102 μm, 86.8% less than before. The analysis of the dimensional stability of knitted polymer fibrous systems was performed by scanning with the papillary sensor, since it provides information comparable with human perception concerning the architecture of the sample surfaces.

A Review on Utilization of Fly- Ash and Pond-Ash as a Partial Replacement of Cement in Concrete Mix Design

2018 ◽  
pp. 413-418
Author(s):  
Harshkumar Patel ◽  
Yogesh Patel
Keyword(s):  
Fly Ash ◽  
Electricity Generation ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Thermal Power ◽  
Strength Test ◽  
Partial Replacement ◽  
Pond Ash ◽  
Research Activities ◽  
Ash Disposal

Now-a-days energy planners are aiming to increase the use of renewable energy sources and nuclear to meet the electricity generation. But till now coal-based power plants are the major source of electricity generation. Disadvantages of coal-based thermal power plants is disposal problem of fly ash and pond ash. It was earlier considered as a total waste and environmental hazard thus its use was limited, but now its useful properties have been known as raw material for various application in construction field. Fly ash from the thermal plants is available in large quantities in fine and coarse form. Fine fly ash is used in construction industry in some amount and coarse fly ash is subsequently disposed over land in slurry forms. In India around 180 MT fly is produced and only around 45% of that is being utilized in different sectors. Balance fly ash is being disposed over land. It needs one acre of land for ash disposal to produce 1MW electricity from coal. Fly ash and pond ash utilization helps to reduce the consumption of natural resources. The fly ash became available in coal based thermal power station in the year 1930 in USA. For its gainful utilization, scientist started research activities and in the year 1937, R.E. Davis and his associates at university of California published research details on use of fly ash in cement concrete. This research had laid foundation for its specification, testing & usages. This study reports the potential use of pond-ash and fly-ash as cement in concrete mixes. In this present study of concrete produced using fly ash, pond ash and OPC 53 grade will be carried. An attempt will be made to investigate characteristics of OPC concrete with combined fly ash and pond ash mixed concrete for Compressive Strength test, Split Tensile Strength test, Flexural Strength test and Durability tests. This paper deals with the review of literature for fly-ash and pond-ash as partial replacement of cement in concrete.

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