All bsi british standards available online in electronic and print formats. For much of the 20th century, rail track used softwood timber sleepers and jointed rails, and a. Our plastic sleepers can be left submerged in the ground, or under water, without any treatment or maintenance required. We are trying to supply the best products at the best price. How to build a hinged hoophouse for a raised bed garden duration. There are also now various environmental concerns regarding the use and disposal of chemicallyimpregnated traditional sleepers. In a first for victorias public transport system, trains travelling through richmond are now running on railway sleepers made from recycled plastic.
These are commonly 254mm wide by 127mm thick in cross section by 2600 mm long. Recycled plastic sleepers and beams offer a rotproof, maintenancefree, lowcarbon alternative to wood with a 25 year materials guarantee. What is the sensitivity analysispricevolume of precast rcc railway sleepers manufacturing plant. Introduction a concrete sleeper is a type of railway sleeper made out of steel. Faculty of engineering at shoubra has been funded to start a project for manufacturing railway sleepers from plastic wastes and iron slag to replace imported wooden sleepers.
Composite sleeper has become a great replacement of traditional sleepers timber, concrete, steel. Dynamic characteristics of railway concrete sleepers using. Their composites consisted of eglass woven fabric as the reinforcement and polyester as the resin. Download brochure klp hybrid polymer railway sleepers request for pdf of the paper recycled plastic railway sleepers analysis and. Recycled plastics in railway sleepers case study recycled plastic railway sleepers are used across the world, however they are not commonly used in australia. It is applicable to the sleepers and parts of sleepers to be installed in tracks with or without ballast. In this paper, performance of wooden sleepers in tracks of egyptian railways, including high cost and material defects as well as reasons to find out a new sleeper will be presented.
An even more competitive and cost efficient railway dynamic characteristics of railway concrete sleepers using impact excitation techniques and model analysis akira aikawa, fumihiro urakawa, kazuhisa abe, akira namura railway technical research institute 2838 hikaricho, kokubunji, tokyo, 1858540, japan. Polyester resin was also mixed with accelerator, hardener, fire retardant, and uv stabilizer. Dynamic properties of railway track and its components. Pdf composite railway sleepers recent developments. Sleepers made of recycled plastics, which are less brittle than concrete, where. The sleepers are first seasoned drying for up to 12 months so that to remove the juicesap and treated with preservative. A railroad tie or crosstie american english or railway sleeper british english is a rectangular support for the rails in railroad tracks.
Examples of different types of plastic and reinforced sleepers are given in an annex. Recycled plastic railway sleepers final report v03 publis. Latest trends and technologies for railway engineering. Railway sleepers types of sleepers engineering articles. It is proposed to produce railway sleepers from an intelligent combination of post consumer waste materials. It claims to allow the patients to sleep in any position of their choice. Plastic railway sleepers for railway applications railroad ties. Production of reinforced cement concrete sleepersfor railway track. Generally laid perpendicular to the rails, ties transfer loads to the track ballast and subgrade, hold the rails upright and keep them spaced to the correct gauge.
These are the early form of sleepers which are not commonly used nowadays. The load from rails when train passes, is taken by these sleepers and is distributed it to the ballast. To give a train a good ride, the track alignment must be set to within a millimeter of the design. It has a flexible and elastic fabric material strap so you can get maximum freedom and comfort. One the way to go your objective is our challenge rail. In the last years, plastic railway sleepers have made their introduction. Amongst its characteristics, plastic sleepers have a good damping and a high design freedom. While recycled plastic sleepers are low cost, the major challenges of using this type of sleepers are their. Klp hybrid polymer sleepers are a sustainable and maintenance free alternative for wooden or concrete sleepers, turnout sleepers and bridge sleepers. There is a large potential market for rubberplastic composite rail sleepers in the uk and in. Railway plastic screw dowel for sleeper,plastic hdpe. Mechanical testing of innovated composite polymer material. The composite railway sleepers reduce the maintenance and repair cost then other sleepers.
The plastic railway sleepers have good damping characteristics and at the same time high strength and high impact resistance properties. Rubber plastic composite rail sleepers page 8 the composite sleeper is superior to the products using virgin materials it replaces. Today, i will show you around the world of rail sleepers and get you to know more about the features of different types of rail sleepers. View plastic railway sleepers ppts online, safely and virusfree. The rail is usually held down to the sleeper with resilient fastenings, although cut spikes are widely used in north american practice. Railway sleepers from mixed plastic wastesrailwastedr. The track vibrations can cause the crack damage in railway sleepers or fasteners, or. If used in the proper way, plastic sleepers can give improvements in the track.
Composite sleepers plastic railway sleepers for railroad use. A man tries his best to get hit by a train csx switching lehigh cement in richmond, va duration. Railway plastic screw dowel for sleeper, plastic hdpe socket for concrete sleeper. Abstract railway sleepers are one of the most important elements of the railway track system. Dont waste time and money on wooden sleepers that require annual care and maintenance. University of birmingham comparison of structural design. With the development and technical requirements of railroad construction, rail sleepers are now made of varieties materials, such as steel, concrete and rubber. A research project was conducted to assess the use of recycled flexible plastic in the formulation of an australian made recycled plastic sleeper. Ppt sleepers powerpoint presentation free to download. Given that wood has been used for the better part of two centuries to make railway sleepers, it is surprising that wooden sleepers still comprise the majority of the railway sleeper market. Depending upon the position in a railway track, railway sleepers may be classified as.
Railway sleepers made from recycled plastic installed at. In terms of material, composite sleepers belong to a kind of plastic railway sleepers. Recent australian developments in fibre composite railway. Origins of plastic composite railway sleepers early in the 1990s, new industries were being developed in the us for engineering recycled plastic waste. These sleepers generally rests on ballast and is also called as ties in some regions. Beams and sleepers trade recycled plastic building and. The feasibility of recycled plastic railway sleepers page ii decreased. These sleepers consist of recycled plastic or bitumen with fillers. Additionally, the electrical isolation provided by a timber sleeper is valuable to the signaling system and only plastic or fibre composites sleepers could also.
They constitute the railway track superstructure together. Mixed plastic wastes mpw along with glass fibre wastes and auxiliary agents will be applied to form a composite product with a thermoplastic polymer matrix, which is reinforced with glass fibers and consists a foamed core. Concrete sleepers we develop innovative railway track systems to help you get ahead fast and safely. One delivers innovative track systems for railway trans port in. Rail shoulder rail sleeper inserts rail anchors for rail sleepers. What are the projected payback period and irr of precast rcc railway sleepers manufacturing business.
Existing materials for railway sleepers of its annual budget on rail track. The fillers often include sand, gravel, recycled glass or short glass fibres shorter than 20mm and they are generally included to increase. Three types of rail sleepers and their own features. The gardening channel with james prigioni recommended for you. Pdf a number of composite railway sleeper technologies have been developed but their. Although timber sleepers are the most common, use of prestressed concrete, steel materials are also increasing. The sleepers will last three times longer than traditional railway sleepers and are made from recycled plastic sourced in australia, including vineyard covers and cotton bale wraps. It can also be used for the fabrication of railway sleepers. One of the most important parts in the railway track is the sleepers. In the next decade millions of railway sleepers across australia will need replacing. It performs as long or longer than wood or concrete sleepers, needing replacement it slips less on curves than wood or concrete sleepers, making the rail track safer.
What is the process flow sheet diagram of precast rcc railway sleepers manufacturing project. Innovative recycled plastic main track sleepers with steel reinforcement reduce total. They should not be regarded as a substitute for wood or. Railway sleepers, cross ties, reinforced polymers, fibre composites, australian developments. Types of railway sleepers, their functions, benefits and. This kind of new material is environmentally friendly, recyclable and comes from a wide range of sources. In the research study, the materials being used by bangladesh railway and the. Early manufacturers attempted to produce and market plastic railway sleepers with the benefits of locking plastic waste in a sustainable long term form.
Composite sleeper is becoming suitable alternative for replacing the. Track design and construction is part of a complex and multidisciplinary engineering science involving. Duratrack railway sleepers is an intelligent approach to using waste plastic as a resource. A plastic or rubber pad is usually placed between the rail and the tie plate where concrete sleepers are used. There is hope recycled plastic railway sleepers made in northwest victoria could be the next weapon in the war on waste. Railway sleepers from mixed plastic wastes railwaste. Its made of a new material called continuous glass fiber reinforced polyurethane foam. This is particularly the case in the us, where wood has a 93% share. Timber is the most widely used material for railway sleeper. Railway sleepers are the components on which the rails are arranged with proper gauge. Railway sleeper materials overview wood, steel, concrete. Plastic railway sleeper, also called composite sleeper, mainly refers to the railway sleeper is made of the plastic composite.