COURSE UNIT TITLE

: RAILWAY BALLASTS

Description of Individual Course Units

Course Unit Code Course Unit Title Type Of Course D U L ECTS
TGT 4036 RAILWAY BALLASTS ELECTIVE 1 1 0 2

Offered By

GEOTECHNICS

Level of Course Unit

Short Cycle Programmes (Associate's Degree)

Course Coordinator

ASSOCIATE PROFESSOR HAKAN ELÇI

Offered to

GEOTECHNICS

Course Objective

To recognize railway infrastructure and superstructures, to recognize and determine the material properties of rocks that can be used as railway ballast, to make the necessary tests according to TS and ASTM standards of rocks to be used as railway ballast and to decide whether the test results can be used as railway ballast, to determine the causes of ballast pollution, and to decide on the necessity of ballast maintenance.

Learning Outcomes of the Course Unit

1   To be able to recognize and classify rocks
2   To be able to recognize railway infrastructure and superstructure elements
3   To be able to know the chemical and mineralogical composition of rocks that can be railroad ballast
4   To be able to determine the physical properties of rocks that can be railroad ballast
5   To be able to determine the thermal properties of rocks that can be railroad ballast
6   To be able to determine the mechanical properties of rocks that can be railroad ballast
7   Determining the rocks to be used as railway ballast according to their material properties

Mode of Delivery

Face -to- Face

Prerequisites and Co-requisites

None

Recomended Optional Programme Components

None

Course Contents

Week Subject Description
1 To define and classify rocks
2 Railway infrastructure elements
3 Railway superstructure elements
4 Chemical and mineralogical properties of rocks that can be used as railway ballast
5 Physical properties of rocks that can be used as railway ballast
6 Thermal properties of rocks that can be used as railway ballast
7 Review and midterm exam
8 Mechanical properties of rocks that can be used as railway ballast
9 The suitability of rocks for use as railway ballast according to their material properties
10 Ballast fouling and its causes
11 Ballast maintenance
12 Basalt-based railway ballast sample analysis report evaluation
13 Granite based railway ballast sample analysis report evaluation
14 Diabase based railway ballast sample analysis report evaluation

Recomended or Required Reading

R Railway Material, Construction, Control and Maintenance and Repair Technical Principles, Yüksel Proje, 2007, Ankara, 64 pp.
TS 7043 EN 13450, 2004 Aggregates for railway ballasts. Turkish Standards Institute Ankara, 33 p.
Kozak M., 2021. Investigation of Railway Ballast and its Properties. Journal of Railway Engineering, Issue 13, pages 86-96.
Bell, F.G. 2004. Engineering Geology and Construction. 809 pages.
Yilmaz, A. 2014.Ballast Fouling in Railway Superstructure. Journal of Mehmet Akif Ersoy University Institute of Science and Technology 6(1) 11-17.
Highways Technical Specifications (HTS), 2013. Highways Technical Specifications, General Directorate of Highways, Ankara

Planned Learning Activities and Teaching Methods

This course will be taught practically in the laboratory. After the lecturer explains the subject, he/she will perform the experiment for the relevant material property, then he/she will expect students and/or student groups to perform the experiment, create a discussion environment in the form of questions and answers and learn the subjects.

Assessment Methods

SORTING NUMBER SHORT CODE LONG CODE FORMULA
1 MTE MIDTERM EXAM
2 PRC PRACTICE
3 FIN FINAL EXAM
4 FCG FINAL COURSE GRADE MTE * 0.25 +PRC * 0.25 + FIN * 0.50
5 RST RESIT
6 FCG FINAL COURSE GRADE MTE * 0.25 + PRC * 0.25 + RST * 0.50


Further Notes About Assessment Methods

None

Assessment Criteria

I. Midterm 25% Examination of the knowledge of the material properties of railway infrastructure and superstructure elements and railway ballasts.
II. Application 25%
III. Final Exam %50: Assessment of the all learning outcomes.

Language of Instruction

Turkish

Course Policies and Rules

To be announced.

Contact Details for the Lecturer(s)

hakan.elci@deu.edu.tr

Office Hours

To be specified in the course programme

Work Placement(s)

None

Workload Calculation

Activities Number Time (hours) Total Work Load (hours)
Lectures 14 1 14
Tutorials 14 1 14
Preparations before/after weekly lectures 14 1 14
Preparation for midterm exam 1 2 2
Lab Exam Preparation 1 2 2
Preparation for final exam 1 2 2
Midterm 1 1 1
Practical exam 1 1 1
Final 1 1 1
TOTAL WORKLOAD (hours) 51

Contribution of Learning Outcomes to Programme Outcomes

PO/LOPO.1PO.2PO.3PO.4PO.5PO.6PO.7PO.8PO.9PO.10
LO.11
LO.21
LO.31
LO.41
LO.51
LO.61
LO.71