Detailed Project Report on pre-stressed concrete railway …
The bearing area of sleepers below the rail seat and over the ballast should be enough to resist the crushing due to rail seat and crushing of the ballast underneath the sleeper. vi. ... PRE-STRESSED CONCRETE RAILWAY SLEEPERS [CODE NO. 2094] Sleepers are members generally laid transverse to the rails on which the rails are supported and fixed ...
Full-scale static and single impact testing of prestressed concrete
For the conventional prestressed concrete sleeper, a sudden drop in load capacity was typically observed due to severe local crushing in the extreme top fibres and steel reinforcement fracture. Based on the number of steel wires failing, an abrupt yet partial or complete loss in load capacity was observed in PO-S1 and PO-S2 specimens, …
A review of failures of railway monoblock prestressed concrete sleepers
The prestressed concrete monoblock sleeper is usually installed on a ballasted track (Fig. 1), which is commonly divided into superstructure and substructure.The sleeper, rails, and fastening system make up the superstructure, while the ballast, sub-ballast, and subgrade represent the substructure [17].The main materials of …
Aspects of Modeling Prestressed Concrete Sleepers …
This paper aims to discuss aspects of modeling prestressed concrete sleepers based on experimental results. Midspan Positive Moment tests were performed on four prestressed sleepers. Using the ATENA 3D software, based on the Finite Element Method, numerical models were simulated through nonlinear analysis to adequately …
Design of prestressed concrete sleepers
The basis for design work for prestressed-concrete sleepers in Europe is EN 13230, valid since October 2002: "Concrete sleepers and bearers." A supplement to this standard is UIC 713: "Design of Monoblock Concrete Sleepers," which provides a design example for a prestressed-concrete sleeper.
Temporal evolution of cracking in prestressed concrete …
the prestress in steel, thereby re-ducing the stress, strain, and cracking tendency of concrete. Alternatively, as concrete creeps and/or shrinks, the concrete material yields …
Structural behaviour of prestressed concrete sleepers …
prestressed concrete sleepers. Mono-block prestressed concrete sleepers, which were first employed in the early 40's, have become essential components in high speed rail track constructions worldwide [28, 29]. The extraordinary development of high speed train networks in Europe and Asia [30], has led to a great number of studies on the ...
Performance of innovative precast concrete sleepers prestressed …
The failure of the prestressed GFRP-RC sleepers was governed by shear-compression failure, while the prestressed steel-RC sleepers failed by crushing of the concrete due to the slippage of steel strands.
Performance of Innovative Precast Concrete Sleepers Prestressed …
The failure of the prestressed GFRP-RC sleepers was governed by shear-compression failure, while the prestressed steel-RC sleepers failed by crushing of the concrete due to the slippage of steel strands.
International Journal of Innovative Technology and …
Figures (6a-6d) shows moment (Msleeper) within mono-block pre-stressed concrete sleeper (B70) and the corresponding maximum stress (F), for wheel load = …
Nonlinear Finite Element Modelling of Prestressed Concrete …
Railway sleepers, which transfer wheel loads to the formation, are an essential component of railway track systems. Prestressed concrete is the most commonly used type of railway sleepers around ...
Dynamic design guidelines for prestressed concrete sleepers
The proposed methodology aims to determine the following items: the suitable sleeper spacing for a given rail type, the wheel load distribution along successive sleepers, the moment within mono-block pre-stressed concrete sleeper (B70), the crushing strength between (sleeper and ballast surface) and finally the suitable effective ballast depth.
An Acoustic Emission-Based Approach To Structural …
Pre-stressed concrete monoblock sleepers can be considered, from a structural point of view, as unidirectional composite beams subjected to bending, with a distributed elastic reaction coming from the
Nonlinear finite element modelling of railway …
Using SOLID65 solid element, the compressive crushing of concrete is facilitated using plasticity algorithm while the concrete cracking in tension zone is accommodated by the nonlinear material model. Since the section of concrete sleeper is fully pre-stressed by nature, the smeared crack analogy is impracticable.
Structural behaviour of prestressed concrete sleepers …
A comparative analysis of the structural behaviour of prestressed concrete sleepers made with high performance concrete (HPC) and high performance recycled aggregate concrete (HPRAC) is presented in this study. Two types of HPRAC sleepers were tested, using 50 and of recycled concrete aggregate (RCA) in …
Structural behaviour of prestressed concrete sleepers …
The results obtained from the analysis of the eco-friendly prestressed concrete sleepers showed an improvement on those obtained from conventional prestressed concrete sleepers. In this research work, the influence of HPRAC on the structural properties of prestressed concrete sleepers was analysed.
Numerical investigation of prestressed concrete sleepers …
The analysis reveals good agreement with the experiment at critical cross-sections (i.e. rail seat & centre) and analytically allowed a ∼ 15 % reduction in …
The Complete Beginner's Guide to Indian Rail Sleeper
Concrete sleeper includes various types: pre-stressed concrete sleeper, pre-tension concrete sleeper, post-tension concrete sleeper and two-block concrete sleeper. ... The 28-day crushing strength of the concrete is not less than 525kg.The rail is placed on a grooved 130×130mm rubber pad. The fastening system is P-clip for 52kg rail, which are ...
Structural behaviour of prestressed concrete sleepers …
A comparative analysis of the structural behaviour of prestressed concrete sleepers made with high performance concrete (HPC) and high performance recycled aggregate concrete (HPRAC) is presented ...
Development of Geopolymer Concrete on Railway Pre-Stressed Concrete
A comparative analysis of the structural behaviour of prestressed concrete sleepers made with high performance concrete (HPC) and high performance recycled aggregate concrete (HPRAC) is presented in this study.
Structural behaviour of prestressed concrete sleepers …
A comparative analysis of the structural behaviour of prestressed concrete sleepers made with high performance concrete (HPC) and high performance recycled aggregate concrete (HPRAC) is presented in this study. Two types of HPRAC sleepers were
PRE-STRESSED CONCRETE RAILWAY SLEEPERS
PRE-STRESSED CONCRETE RAILWAY SLEEPERS - Project Report - Manufacturing Process - Cost - Investment Required. Report includes feasibility report, profitability analysis, raw materials, break even points, formulations and formula and much more.
Fatigue life modelling of railway prestressed concrete …
14 railway track systems. Prestressed concrete is the most commonly used type of railway sleeper around 15 world. Crushing is a common problem on concrete sleepers, which include excessive flexural, shear, 16 and bond stresses. The most causes of crushing in prestressed concrete sleepers are dynamic loads.
Optimal Design and Spacing of Mono-Block Prestressed …
sleeper spacing for a given rail type, the wheel load distribution along successive sleepers, the moment within mono-block pre-stressed concrete sleeper (B70), the crushing strength between (sleeper and ballast surface) and finally the suitable effective ballast depth. A feasibility study to calculate the total cost of 1Km
Types Of Concrete Sleepers And Their Various Advantages
Prestressed concrete sleeper (c) Mono-block prestressed concrete sleeper At present, prestressed concrete sleepers are the most common type of sleepers. As shown in the above figure, the mono-block prestressed concrete sleeper, has an overall length of 2750 mm and a weight of 270 kg approximately.
Structural behaviour of prestressed concrete sleepers …
1 Structural behaviour of prestressed concrete sleepers produced with High Performance Recycled Aggregate Concrete Andreu Gonzalez-Corominas1, Miren Etxeberria1*, Ignasi Fernandez2 1 Department of Civil and Environmental Engineering, Polytechnic University of Catalonia, Jordi Girona, 1-3 B1 building, Barcelona 08034, Spain.
pre-stressed concrete sleepers crushing – Grinding Mill China
Nakul Biluve Sandeep G.P.Prestressed Concrete Sleepers |2INTRODUCTION Prestressed concrete … the large forces carried by the tendons, the concrete is vulnerable to crushing … » Free Online Chat. Concrete Railway Sleepers – Buy Concrete Railway … Production of pre-stressed concrete railway sleepers. Track …
Green approach on ternary blended pre stressed cement concrete …
The method of testing has been detailed in Standard Specification for Pre- Tensioned Prestressed Concrete Sleepers for Broad Gauge and Metre Gauge of IRT-39-85 Annexure V (Fourth Revision-Aug 2011). The bending strength tests of railway sleeper's specimen were carried out in static bending test equipment installed in concrete …
Experimental and parametrical investigation of pre-stressed …
In this study, ultrahigh-performance fiber-reinforced concrete (UHPFRC) used in a type B70 concrete sleeper is investigated experimentally and parametrically. The main parameters investigated are the steel fiber volume fractions (0%, 0.5%, 1%, and 1.5%). Under European standards, 35 UHPFRC sleepers are subjected to static bending tests …
Structural behaviour of prestressed concrete sleepers …
A comparative analysis of the structural behaviour of prestressed concrete sleepers made with high performance concrete (HPC) and high performance recycled aggregate concrete (HPRAC) is presented in this study. Two types of HPRAC sleepers were tested, using 50 and of recycled concrete aggregate (RCA) in replacement …