Application of Preplaced Aggregate Concrete to
Convert the Ballasted Railway Tracks into Slab Tracks
Volume 1 - Issue 4
Morteza Esmaeili1, Milad Hosein Esfahani2*, Ali Hemati2
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- 1 Railway Engineering School, Iran University of Science and Technology, Iran
- 2 Ms.c Student of Railway Engineering, Iran University of Science and Technology, Iran
*Corresponding author:
Milad Hosein Esfahani, Railway Engineering School, Iran University of Science and Technology, Iran
Received: February 27, 2018; Published: March 07, 2018
DOI: 10.32474/TCEIA.2018.01.000121
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Abstract
One of the most critical restrictions of ballasted railway tracks maintenance is the ballast undercutting and sieving over the
railway bridges and tunnels. In recent years with respect to the development of in-place concrete slab track construction, using
preplaced aggregate concrete technology is known as a new method to convert the ballasted railway tracks into slab track. Since
no detail has been published regarding to design and construction of such systems by various railway owners, so the present study
is allocated to this issue. In this matter, firstly some accomplished projects using this system has been reviewed and secondly, the
detail evaluation of preplaced ballast concrete performance has been investigated in lab environment. In this former stage, by using
the developed laboratory-scaled facilities, many cylindrical specimens have been constructed and tested. Consequently, their flow
time and related compressive and splitting tensile strengths have been presented and the optimum injected mortar mix design have
been reported.
Keywords: Preplaced aggregate concrete; Slab track; Flow time; Compressive strength; Splitting tensile strength
Abstract|
Introduction|
History of Pac|
Pac Specifications|
Materials and Proportioning|
Developed Laboratory Apparatus|
Materials and Mix Design|
Results And Discussion|
Conclusions|
References|