NDLI: 3-D Degradation analysis of railroad ballast

Content Provider	Springer Nature Link
Author	Tolppanen, Pasi Stephansson, Ove Stenlid, Lars
Copyright Year	2001
Abstract	Degradation behaviour of aggregate particles of the size of railroad ballast (32–63 mm) is examined using Los Angeles (LA) milling and 3-D scanning techniques. Seven different rock types were tested at four stages of milling. For the analytical geometry and topography characterization, a new method based on Fourier and power spectra was used. The results are compared with those obtained using geometrical methods and traditional manual measurements. Diminishing of surface roughness and dimensions is evident. The change in roughness was 20–35% and for maximum dimensions of less than 10% in the case of hard rock types. The LA value was less than 15. For the weaker particles values of more than 40% and more than 20%, respectively, were obtained. The fractal dimension approached a value of 2 as a function of milling rates.Les processus de dégradation de granulats pour ballast (32–63 mm) sont étudiés à l'aide de l'essai Los Angeles (LA) et de techniques de tomographie 3-D laser. Sept types de roches sont testés à quatre étapes de broyage. Une nouvelle méthode d'analyse utilisant la transformation de Fourier et son spectre de puissance permet la caractérisation géométrique des granulats. Les résultats obtenus sont comparés à ceux donnés par des méthodes géométriques et mesures manuelles traditionnelles. La diminution de la rugosité de surface et des dimensions des granulats est évidente. La rugosité diminue de 20–30% et la taille maximum de moins de 10% dans le cas des roches dures. La valeur de LA est inférieure à 15. Pour les granulats de roche moins dure, ces valeurs sont respectivement de 40% et plus de 20%. La dimension fractale est proche de 2 et dépend du taux de broyage.
Starting Page	35
Ending Page	42
Page Count	8
File Format	PDF
ISSN	14359529
Journal	Bulletin of the International Association of Engineering Geology - Bulletin de l'Association Internationale de Géologie de l'Ingénieur
Volume Number	61
Issue Number	1
e-ISSN	14359537
Language	English
Publisher	Springer-Verlag
Publisher Date	2001-10-12
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Geotechnical Engineering & Applied Earth Sciences Geoengineering, Foundations, Hydraulics Geoecology/Natural Processes Nature Conservation
Content Type	Text
Resource Type	Article
Subject	Geology Geotechnical Engineering and Engineering Geology

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Weathering beneath lateritic profiles

Gypsum/anhydrite: some engineering problems

Rory Mortimore: Logging the Chalk

Aurèle Parriaux: geology: basics for engineers

Reply to the commentary of Antonis D. Koussis and Evangelos Akylas

Assessment of chalk rock mass in excavations

Modelling self-weight consolidation in Holocene sediments

Weathering indices and their applicability for crystalline rocks

Landslide hazard assessment: summary review and new perspectives

3-D Degradation analysis of railroad ballast

Similar Documents

Weathering beneath lateritic profiles

Gypsum/anhydrite: some engineering problems

Rory Mortimore: Logging the Chalk

Aurèle Parriaux: geology: basics for engineers

Reply to the commentary of Antonis D. Koussis and Evangelos Akylas

Assessment of chalk rock mass in excavations

Modelling self-weight consolidation in Holocene sediments

Weathering indices and their applicability for crystalline rocks

Landslide hazard assessment: summary review and new perspectives

3-D Degradation analysis of railroad ballast