2014 Chicago : Determining the Processing Quality of PVC Pipe by DSC – How Precise?
Author(s) : DALE B. EDWARDS, ANAND R. SHAH, DONALD E. DUVALL
Differential scanning calorimetry (DSC) has been used to study the processing of PVC pipes. This work has been largely embodied in ISO 18373-1-2007, Rigid PVC Pipes –differential scanning calorimetry (DSC) method – Part 1: Measurement of the processing temperature and Part 2: Measurement of the enthalpy of fusion for...
2010 Vancouver : Comparison Between PE4710 (PE4710 PLUS) and PE100 (PE100+, PE 100 RC)
Author(s) : Dr. Gene Palermo
The scope of this paper is to clarify the various pipe material designation codes and other terms (PE 4710, PE 4710 PLUS, PE 100, PE 100 RC and PE 100+) that are used in the piping industry for high density polyethylene (HDPE) materials. These are the benchmark “high performance” HDPE materials used worldwide for a...
2006 Washington DC : Development of Notched Ring Test for Measuring Slow Crack Growth
Author(s) : Pyo, Seo, Mutter, Broutman, Choi
A novel Notched Ring Test (NRT) method for measuring slow crack growth (SCG) in plastics pipes and
fittings is developed and applied to determine its applicability as the standard test method. NRT specimen
in the form of a notched full ring, directly obtained from the extruded pipe or injection molded fitting...
2006 Washington DC : Introducing PE100 for Medium Pressure Gas Networks in South America
Author(s) : Belforte, Gerard, Palermo, Guerra
South America is a region with a fast increase in economic growth and energy needs,
and natural gas represents a strategic energy source not only for producers like
Argentina but also for net importers like Uruguay and source-differentiated countries
The fast development of the economy leads to request of...
2006 Washington DC : Using the CRS Concept for Plastic Pipe Design Applications
Author(s) : Palermo
The CRS (Categorized Required Strength) concept was developed within the ISO pressure
rating system to provide more flexibility to the design engineer. One of the major uses of
CRS is to provide a design basis of 100 years for plastic piping applications. With the CRS
concept plastic pipe can now have a design basis...
2004 Milan : Can ISO MRS and ASTM HDB Rated Materials be Harmonized
Author(s) : Zhou, Palermo
ISO MRS and ASTM HDB rating systems have been successfully used for more than four
decades in Europe and North America. MRS differentiates well the three generations of
HDPE materials by classifying them as PE63, PE80 and PE100. However, HDB classifies all
three generations of HDPE as only one PE 3408. When...
2004 Milan : Manufactured Aggregate as Imported Backfill Material for Plastics Pipes
Author(s) : Newport, Wijeyesekara, Edwards
Research work undertaken at the University of East London has produced new forms of sustainable manufactured aggregate, which gives a backfill material which has many advantages over natural materials. The unique geotechnical properties of the aggregate make it an idea material for the laying of plastic pipes allowing...
2001 Munich : Cable Drawing Trough Deformed Plastic Ducts
Author(s) : Fairfield, Reid, Hounsome, Edwards, Sibbald
This paper provides estimates of the draw force needed to pull sub-ducts or cables through
a series of typical ducted utility networks. Variables such as : coefficient of friction between
the outside of the cable and inside of the duct, the main duct’s vertical diameter, the cable
bundle or sub-duct’s external...
2001 Munich : Complex Yield Behaviour of PE100 Resin on Plane Strain Tensile Specimen
Author(s) : Choi, Lee, Broutman, Edwards, Palermo, Cho, Choi, Park
In recently designated plane strain grooved tensile (PSGT) methodology of ASTM F2018
standard, a groove in the direction perpendicular to the loading axis allows biaxial stress
state to be generated under a uniaxial loading. The biaxial stress state produced very closely
approximates the internally pressurized pipes...
1998 Gothenburg : Plastics Pipes - Future in the Water Industry
Author(s) : Stokes, Edwards
The paper examines the business and regulatory background to the
infrastructure investments anticipated in the next few years, from
the point of view of a major UK Water Company. Past performance
of the use of plastic pipes for sewers and water mains are examined.
Shortcomings of the products are identified and...