Considerations when restraining molecularly oriented PVC pipe

Author(s) : Ricardo Pascual

Social awareness with aspects related to the conservation of the environment and sustainability, the acceptance by citizens of the need to reduce consumption, reuse products, repair as far as possible and, fundamentally, the action of recycling at the end of its life, facilitates the availability of recycled plastics...

Author(s) : Shane Harton, Andrew Sell, Carl Dolgow

The torque rheometer has been the standard instrument used in poly(vinyl chloride) (PVC) quality control (QC) testing for decades. ASTM D2538 has provided standard, comprehensive testing and analysis procedures since 1969 that have allowed the vinyl industry to coalesce around this simple, yet robust, set of...

Author(s) : Sunwoong Choi, Robert Stakenborghs , Pyeongan Lee, Byoungho Choi

This work developed a hydro-axial tension (HAT) test as a whole pipe axial tensile test and applied to evaluate the polyethylene (PE) pipe and fusion joints containing various flaws. HAT test was designed to utilize hydrostatic pressure to cause axial tension in pipes. The experimental and numerical analysis was...

Author(s) : Antonio Rodolfo Jr., Vanderley M. John

Unplasticized (U-PVC) ABNT NBR 5647-2 regular industrial pipe samples, with nominal diameter DN 100, outside diameter 110 mm, nominal wall thickness 7.8 mm, Ca/Zn stabilized, were studied using an essential work of fracture (EWF) approach. These pipe samples were also tested for the degree of gelation via...

Author(s) : Cindy Bray

For over two decades, the plastics pipe industry in Australia has aimed to recycle the maximum amount of usable plastic pipe and other suitable materials into new plastic pipes through programs such as take-back schemes and providing collection facilities on manufacturing sites. In Australia long-term sustainability...

Author(s) : Tobias Johnsen, Ole Grøndahl Hansen

With a growing global population that will primarily settle in urban areas, more and more agricultural land will be converted into dwellings, roads etc. As the demand for food in 2050 will be 60% greater than today, a conflict between Sustainable Development Goals 2 (Zero Hunger) and 11 (Sustainable Cities and...

Author(s) : Roland Valk, René Hermkens, Sjoerd Jansma

The use of hydrogen gas as an energy carrier is seen as a key component of the energy transition. This creates new challenges, including in relation to the transport and distribution of this gas. The low-pressure (natural) gas distribution grid in the Netherlands currently consists of 64% PVC and is presumed to be...

Author(s) : A. Marangoni

The competitiveness of plastic pipes vs. non plastic pipes for water and sewer networks relies on both a superior performance to cost ratio and environmental benefits that can be offered to the utility industry, across the whole lifecycle of these networks. In order to help the European pipe network owners in...

Author(s) : Tobias Johnsen

To ensure the highest possible quality of plastic pipes for the Nordic market, the Nordic Poly Mark currently only allows virgin material or own reprocessed material. In order to accelerate the circular plastic pipe economy in the Nordics, a partnership between a PVC pipe waste collection system, a PVC pipe producer...

Author(s) : Jay Parvez, Richard Nichols

All thermoplastic and thermoset pipes must consider the impacts of cyclic loading on overall performance. Since its first use, PVC pipes have been tested for its resilience to such loading. As testing evolved over time, the method to determine cyclic capacity for gasketed PVC pipes has improved. Previously, the...

Author(s) : Karin Jacobson, Daniel Ejdeholm

Plastic pipes often have much better corrosion resistance than metallic pipes and have, in addition, the benefits of low weight and flexibility. Thanks to this, they are often used to convey chemicals. There is, however, still a large potential for a much more extensive use of plastic pipes for this application. The...

Author(s) : Ignacio Muñoz

Society has recently lived few strange and peculiar years, to say the least. COVID impacted personal lives, businesses, industries. And it is undeniable, the big elephant in the room arrived years before COVID and will remain much more: CLIMATE CHANGE. As broad as this topic is, this paper focuses on the impact that...

Author(s) : J. Lahoz

An investigation project was launched in 2020 to clarify the relationships between the processing conditions and the design lifetime of PVC-U 250 pipes. Ca/Zn stabilized pressure pipes were extruded with different processing temperatures and characterized by their DSC B-onset temperature and degree of gelation. Their...

Author(s) : Luciana Oriqui, Mauro Adamo Seabra, Antonio Rodolfo Jr.

The Brazilian PVC pipe industry maintains specific mechanisms of intense and continuous evaluation of the products regularly offered to the market. These programs are carried out by an independent third-party technical entity, within known public rules and based on the best practices of conformity assessment. Their...

Author(s) : Dipl. Ing. Rainer Vießmann

The production of PVC pipes is mainly produced on counter rotating twin screw extruders as the PVC Dryblend material is readily available in powder form. Whereas PVC granules, mainly processed on single screw extruders, play a minor role in pipe production for economic reasons. The design of the extruder screws has a...

Author(s) : A. Marangoni

The quality of infrastructures is a key driver for maximizing the performance of the utilities networks and minimizing the environmental impacts associated with their operation. The water and sewer pipes are key network elements to guarantee a satisfactory service to the citizens. Their end-of-life management is an...

Author(s) : Saleem Shakir

Unplasticized formulations based on Poly(Vinyl Chloride) (PVC) and Chlorinated Poly(Vinyl Chloride) (CPVC) resins offer technical solution to pressure piping systems that find extensive use in residential and industrial applications. Building upon the desirable properties of the vinyl monomer, the chlorine content of...

Author(s) : Antonio Rodolfo Jr., Vanderley M. John

Unplasticised (U-PVC) and modified (M-PVC) pipes used in irrigation and infrastructure applications, outside diameter 326 mm, were evaluated according to various fracture mechanics methodologies, including fracture toughness (stress intensity factor KC and energy release rate GC, both at fracture), essential work of...

Author(s) : C. Losher and P.V. Mercea

In the framework of the German Environmental Agency (UBA) requirements of plastic articles in contact with drinking water (KTW-BWGL-guideline), the compliance is verified by comparing so-called “expected concentrations at tap”, C tap , of substances contained in the plastics with specific limits in drinking water...

Author(s) : Sylvie Famelart, Vincent. Stone

In order to deliver to the market reliable and consistent information about PVC and the different PVC pipe solutions, a Training Package was developed a few years ago. The package was made up of a set of standalone PowerPoint slides, providing information on PVC-U and PVC-C pipe systems. Information on both general...