Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

A Long-term Triaxial Filtration Test System

28.08.2008
A triaxial apparatus set-up is common in most geotechnical laboratories. This research describes the innovation and improvement that can be carried out for a long-term triaxial filtration compatibility test.

Azlan Abdul Aziz and Husaini Omar

Current practice in selecting an optimal geotextile filter for its intended use involves either the application of diverse site-specific in-isolation criteria or through selected soil/geotextile compatibility tests. Compatibility tests described in the literature are generally performed in simple hard-walled permeameters that suffer from sidewall leakage and incomplete saturation. This research describes the innovation and improvement that can be carried out for a long-term triaxial filtration compatibility test.

A triaxial apparatus set-up is common in most geotechnical laboratories. However, the use of a triaxial set-up to accommodate long-term filtration tests is uncommon, especially when the need to accommodate radial and/or vertical flow to the geotextile is incumbent. All other aspects of shear strength capability have been maintained in the proposed set-up.

The fabricated cell within a triaxial set-up addressed the disadvantages found in simple hard-walled permeameters. A volume change gauge for automated continuous flow rate measurements have been designed and are included in the system. Procedures to accommodate full saturation and scanning electron microscopy (SEM) analysis required for long-term filtration tests are developed and refined. The performance of a long-term filtration test of a silt and a thin melt-bonded non-woven geotextile in the triaxial permeameter system has been assessed.

FEATURES

- An effective and environmental cost saving test system using readily available commercial system but with added value.

- Compatibility selection of soil with various manufactured geotextiles through long-term laboratory filtration test system is rationalised.

- Triaxial permeameter developed can accommodate: i) the application of in-situ field stresses, ii) vertical and/or radial flow, and iii) preparation of specimens for scanning electron microscopy analysis to investigate filtration mechanisms upstream of and within the geotextile.

- Test set-up allows for continuous flow rate measurement and automated data collection of long-term triaxial filtration test

AWARDS WON

GOLD— International Exhibition of Ideas-Inventions-New Products (IENA 2006).

Reader Enquiry
Department of Civil Engineering
Faculty of Engineering
Universiti Putra Malaysia Serdang, Selangor
43400 UPM,
Malaysia
Tel: 603-8946 6384
E-mail: azlan@eng.upm.edu.my

Dr Nayan Kanwal | ResearchSEA
Further information:
http://www.upm.edu.my
http://www.researchsea.com

More articles from Earth Sciences:

nachricht Sediment from Himalayas may have made 2004 Indian Ocean earthquake more severe
26.05.2017 | Oregon State University

nachricht Devils Hole: Ancient Traces of Climate History
24.05.2017 | Universität Innsbruck

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Can the immune system be boosted against Staphylococcus aureus by delivery of messenger RNA?

Staphylococcus aureus is a feared pathogen (MRSA, multi-resistant S. aureus) due to frequent resistances against many antibiotics, especially in hospital infections. Researchers at the Paul-Ehrlich-Institut have identified immunological processes that prevent a successful immune response directed against the pathogenic agent. The delivery of bacterial proteins with RNA adjuvant or messenger RNA (mRNA) into immune cells allows the re-direction of the immune response towards an active defense against S. aureus. This could be of significant importance for the development of an effective vaccine. PLOS Pathogens has published these research results online on 25 May 2017.

Staphylococcus aureus (S. aureus) is a bacterium that colonizes by far more than half of the skin and the mucosa of adults, usually without causing infections....

Im Focus: A quantum walk of photons

Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.

The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....

Im Focus: Turmoil in sluggish electrons’ existence

An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.

We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...

Im Focus: Wafer-thin Magnetic Materials Developed for Future Quantum Technologies

Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.

Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...

Im Focus: World's thinnest hologram paves path to new 3-D world

Nano-hologram paves way for integration of 3-D holography into everyday electronics

An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Marine Conservation: IASS Contributes to UN Ocean Conference in New York on 5-9 June

24.05.2017 | Event News

AWK Aachen Machine Tool Colloquium 2017: Internet of Production for Agile Enterprises

23.05.2017 | Event News

Dortmund MST Conference presents Individualized Healthcare Solutions with micro and nanotechnology

22.05.2017 | Event News

 
Latest News

How herpesviruses win the footrace against the immune system

26.05.2017 | Life Sciences

Water forms 'spine of hydration' around DNA, group finds

26.05.2017 | Life Sciences

First Juno science results supported by University of Leicester's Jupiter 'forecast'

26.05.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>