Railway sleepers (these can usually be purchased in 2.4 or 1.2 meter lengths. Railway sleepers can be purchased as softwood, reclaimed and oak and starting from around £20 per railway sleeper. 150mm or 200mm timber screws (usually have a 10mm head) at a cost of approximately £25 per 50 screws. Wood drill bits (6mm) …
In order to introduce the limit states design concept for railway sleepers in Australia, there have been a number of investigations into impact load action history, dynamic properties of railway track and its components, test programs, and structural capacity results as well as the strategic recommendations for track capacity upgrade for ...
These concrete railway sleepers are subject to static, quasi-static, dynamic, and impact loads caused by the train travelling over the track [8]. These loading conditions or combinations of these loads normally cause damage to railway sleepers. ... Table 5, Table 6 show the sleeper concrete mix design and its mechanical properties. …
The application of ground granulated blast furnace slag (GGBFS) and steel fibers in prestressed concrete railway sleepers was investigated in this study.
3.5.1 The concrete shall be of controlled quality with the nominal maximum size of aggregates limited to 20mm. Where wire spacing permits, aggregates upto 25mm may be used. The manufacturer shall get the concrete mix design along with the upper and lower limits of granulometric curves approved by the Inspecting Officer.
The LCA results indicated that mix BS56 had the lowest CO 2 emission per unit volume, which is 27% (131 kg-CO 2 /m 3) lower than that for the concrete currently used in railway sleepers. Therefore, mix BS56 was selected as the concrete mix for eco-friendly railway sleepers and this mix was used for the subsequent test series. 2.2. …
the mechanical behavior of concrete railway sleeper mix design, by performing compressive strength, flexural strength and splitting ten sile strength …
Mono block prestressed concrete sleepers are of two types i.e., Pre-tensioned and Post-tensioned. Pre tensioned sleeper has the overall length of 2750 mm and weighs 286.5 kg approximately. The sleeper has a trapezoidal cross section having top width of 150 mm and bottom width of 249 mm and depth of 210 mm at the rail seat.
The shape and outer dimensions of the UHPC sleeper developed in this study were substantially adapted from the sleeper design used for the quick-hardening concrete track (QHT) system [20], which is a method to convert ballast tracks to concrete tracks.The shapes of the sleepers with conventional concrete and UHPC are shown in …
Talking Architecture & Design Podcast ... Cement mix is made from 6 parts fine gravel, 4 parts sand, and 2.5 parts cement. ... Railway. Before concrete sleepers became popularised in recreational ...
Railway sleepers are a popular fixture in many gardens throughout the country. Available in softwoods and hardwoods, they offer a stylish addition to any outdoor living area, adding a rustic charm that many desire for their garden. ... Concrete Mix – A light mortar is needed to make concrete that will secure the bottom layer of wood to the ...
INDIAN RAILWAY SPECIFICATION FOR FOR PRE-TENSIONED PRESTRESSED CONCRETE SLEEPERS (BROAD GAUGE, METRE GAUGE AND NARROW GAUGE) …
J. Wang et al. Modification of Concrete Railway Sleeper Mix Design Using Hybrid Application of Steel Fibers ‒ 120 ‒ sleepers, as an alternative, were used [6]. Considering the performance of ...
Hard landscaping projects with reclaimed railway sleepers Paving Types. Block Paving. Block Paving - An Introduction to Block and Brick Paving ... passing through all the courses and into the foundation concrete. This system works for sleeper walls up to 1200mm in height; anything higher than 1200mm needs to be designed by an engineer to take ...
Evaluation of polymer mix for railway sleepers. Research and development of fibre composite railway sleepers are now looking for a suitable coating material to protect their load carrying components against adverse environments [12], [27]. The superior mechanical, thermal and durability properties of a polymer matrix composed of …
The current paper deals with the numerical investigation of a unique designed pre-stressed reinforced concrete railway sleeper for the design speed of 300 km/h, as well as an axle load of 180 kN. The authors applied different methodologies in their research: traditional hand-made calculations and two types of finite element software. …
Modern high speed mixer, pan, turbine or any other suitable type, approved by the Inspecting Officer shall be used for mixing concrete. Concreting shall commence within …
The design wheel load, also known as dynamic support-point force, is the force that acts on the sleeper and that, in turn, produces the design moment. In bending tests, the concrete sleeper must be able to withstand this design moment without the formation of cracks. The design load is calculated from the static wheel load …
The type of sleepers is prestressed concrete monoblock sleepers (EN 13230-2). The sleepers shall be designed in accordance with EN 132306 and produced in accordance …
Introduction. The traditional materials used to manufacture railway sleepers are timber, concrete and in some cases steel, which are generally designed for 20, 50 and 50 years, respectively [1], [2], [3].Timber was the earliest material used and more than 2.5 billion timber components have been installed worldwide [4].They are adaptable and …
Due to the need for concrete railway sleepers to carry huge loads, concrete railway sleepers ar e usually mad e with precast high -strength concrete (HSC) mixes. According to ACI 363R – 11 [ 68 ...
Current paper deals with numerical investigation of a unique designed pre-stressed reinforced concrete railway sleeper for the design speed of 300 km/h, as well as axle load 180 kN.
The mix design was done as per IS 10262:2009, Indian Railway standard specification for pre-tensioned prestressed concrete sleepers for broad gauge and metre gauge, serial No. T-39 (fourth revision Aug 2011), MORTH (Ministry of Road Transport and Highways) Specification Section 1700 (structural Concrete) and IRS (Indian Railway …
The main application for polymer concrete is in chemical storage, but this has been recently extended to include bridge decks, concrete crack repairs, railway sleepers, pavement overlays, decorative construction panels, waste-water pipes and other structures in aggressive environmental conditions [1], [11], [14], [15], [16].
Composite sleeper is becoming a suitable alternative for replacing the existing concrete, steel and particularly timber sleeper in both mainline and heavy haul rail network. Composite sleeper technologies are already available in the last 20 years but they have gained limited acceptance by the railway industry. For better understanding of the …
Use a spirit level to ensure the sleeper is level before attaching, then screw through the stake into the sleeper. If using concrete to fix the sleepers, lay a bed of concrete between 50mm – 100mm thick, with a little extra at the front and behind the sleeper. Position the sleeper on top of the concrete bed and add concrete in the space ...
By incorporating railway sleepers into your garden design, you can transform even the most challenging terrain into a beautiful and functional outdoor space. ... Then mix up some lean mortar to use as a concrete base and haunching. Alternatively, you can use gravel or sand, which are great for drainage. While one or two layers of …
Laminated carbon fiber reinforced polyurethane (L-CFRPU) reinforced concrete railway sleeper models (LCR concrete sleepers) have the potential to exhibit …
3.2.3 The cement content of the mix shall not be less than 350 kg/cu. m. and not more than 450 kg/cu.m. 3.3 Admixture 3.3.1 Super Plasticizer conforming to IS: 9103 may be used with the prior approval of RDSO. At this stage the revised concrete mix design shall also be submitted to RDSO for approval. However, following shall be observed:
Fig. 3(a) demonstrates that, for the mix with 0% filler, the peak temperature was obtained at 150 min after. Evaluation of polymer mix for railway sleepers. Research and development of fibre composite railway sleepers are now looking for a suitable coating material to protect their load carrying components against adverse environments [12], [27].