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General Documents
Brochure : What is PVC4Pipes? Click on the flag to read the brochure in your language
       
Poster 1 "Open your Mind"
Poster 2 "Open your Mind" "Pvc Pipes Market Trends and Development in Central & Eastern Europe" Presentation of Joël Fumire in connection with the PVC4Pipes at the " 3rd CEE / Russia Plastics pipes markets" conference on September 2007 in Prague.
"Future of PVC Piping Systems in Europe - A development Vector" Presentation of Eva Timar in connection with the PVC4Pipes at the "EDC, VCM PVC Market in CEE & Russia conference" on May 2005 in Budapest.
Durability
Durability of PVC Plastic Piping systems
Solid wall PVC non-pressure pipes have been in practical use for > 60 years. The experience has been and still is very positive. Structured wall PVC non-pressure pipes were introduced in the 1970s, and now have nearly 30 years of experience. These pipes are also performing very well in service.
PVC pipes have excellent resistance to chemicals like detergents, which make them particularly suitable for sewer applications.
There is no chemical degradation on PVC pipes buried in the ground, and PVC pipes do not oxidise in service.
Jointing systems on PVC pipes are mainly rubber seals, which have a very low leakage rate.
The recent SMP (Sustainable Municipal Pipes) project in Germany and other countries in Europe showed this clearly. The conclusion in the report is based on pipes made from PVC in nearly 80 % of the cases studied. See report on Teppfa website.
The conclusion of the reports can be summarised with the following:
PVC piping systems have now been employed for nearly 70 years for the transportation of drinking water or the transportation of foul water in sewerage systems.
The intrinsic properties of PVC become so “natural” that one simply forgets sometimes how good they are when compared to the old “traditional” materials or even the “newcomers” from the plastic world.
Good mechanical properties in terms of creep , viscoelasticity, and fatigue
These mechanical properties are very important and are maintained over prolonged periods of time (products are evaluated for creep, and data are extrapolated up to 100 years when necessary with high safety coefficient) The visco-elasticity of the material permits an exceptional behaviour concerning the interactions between the pipe and the surrounding soil.
This can really be seen in the laboratory (see experience in the United States with article N°13 or article N°25 on fatigue), or through experience gained in the field.
Read articles N°3, N°4, N°5, N°7, N°8, N°10, N°15
Maintenance of the properties of PVC pipes in service
The maintenance of properties is proved by the analysis of pipes that have been dug out after years of service. Experience includes several analyses of pipe systems which have been in service between 15 and 60 years!
Read articles N°2, N°6, N°8, N°9, N°11, N°12, N°16, N°23, N°24, N°27
Low leakage of the systems over time
The low failure rates on the pipe systems are also mentioned many times both in America and in Europe.
These failure rates confirm the good toughness of the material as well as the tightness of the rubber joints. Read articles N°1, N°17, N°18, N°19, N°21 and presentation N°26 from DVGW, for a better view of the failures rates.
Long term resistance to chemical aging
Plastic pipes usually present a behaviour which is very well described in article N° 14.
A buried pipe in PVC has essentially no chemical degradation over a prolonged period of time. This is very well described in recent work from TNO (article N°12 and presentation N°24)
Furthermore PVC is inert to a lot of materials (including disinfectants used in the treatment of potable water)
Compared with other thermoplastic materials PVC has an exceptional low coefficient of diffusion, because the service temperature is below the glass transition temperature (see for instance article N°22).
These good properties are also the reason why recycled PVC pipes can be processed again without extra addition of stabilisers (see article N°20 on the good properties for recycling)
Presentations made at the Plastics Pipes XII Conference in April 2004
Past Successes for Future Growth
Developments in Plastic Materials
New Successes and New Solutions
Stabilisers and Manufacturing
Case Studies from Around the World
System Maintenance and Performance
Rehabilitation
Slow Crack Growth
Case Studies and Market Opportunities
Joining and Joint Assessment
Surface Loading and Deformation
System Pressure Rating And Residual Life
Structured Walled Non-Pressure Pipes
Sustainability and Regulation Approval
Hot Water and Industrial Applications
Lifetime Analysis
New technologies and close
Poster Papers
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