Riprap Stockpile Size and Shape Analyses Using Computer Vision

Riprap and large sized aggregates are being widely used in geotechnical and hydraulic applications Particle size and morphological properties are among the primary factors that determine the performance and characteristics of the aggregate skeleton in various types of structures such as Portland cement concrete layers [] unbound or bound pavement layers []

‪Jiayi Luo‬ ‪Google Scholar‬

Automated segmentation and morphological analyses of stockpile aggregate images using deep convolutional neural networks H Huang J Luo E Tutumluer JM Hart AJ Stolba Augmented Dataset for Vision Based Analysis of Railroad Ballast via Multi Dimensional Data Synthesis K Ding J Luo H Huang JM Hart IIA Qamhia E Tutumluer Algorithms

Toward Automated Field Ballast Condition Evaluation

Ballast plays an essential role in the response of a railroad track to repeated loading Ballast degradation may lead to poor drainage lateral instability and excessive settlement Extreme levels of ballast degradation may cause service interruptions and safety concerns Therefore ballast condition evaluation is of great importance in ensuring safe and

SPECIAL SPECIFICATION 4391 Ballasted Track Construction

J Ballast Railroad ballast material shall be crushed granite stone in conformance with AREMA Chapter 1 Part 2 Ballast gradation shall conform to AREMA Number 4 3 Property Requirements A Physical Analysis 1 Method of Sampling Secure field samples in accordance with ASTM D 75

Effect of clay fouling on track drainage capacity of railway Ballast

To study the permeability behaviour of clean and fouled railway ballast Tennakoon [11] The fresh ballast was obtained from a stockpile at the Nawalapitiya railway unit and classified as biotite gneiss Before grading the particles using sieve analysis the ballast samples were washed and air dried to eliminate dust clay and undesirable

Investigation and evaluation of railway ballast properties

In railroad construction ballast and sub ballast play a significant role Railroad ballast has to resist vertical and longitudinal forces to hold the track in position to provide energy absorption for the track to facilitate adjustment of the track geometry to provide immediate drainage of water falling onto the track to reduce pressures on underlying materials by

Discrete element modeling of railroad ballast using imaging

Semantic Scholar extracted view of "Discrete element modeling of railroad ballast using imaging based aggregate morphology characterization" by Hai Huang Skip to search form Skip to main 3D Image Analysis Using Deep Learning for Size and Shape Characterization of Stockpile Riprap Aggregates—Phase 2 Haohang Huang E Tutumluer

BALLAST PRODUCTION CURRY QUARRY 2019 2020

storage with the only requirement being that the toe of a stockpile shall not be closer than 35 ft from track centerline Stockpiles will not be permitted on the West or inside of the Loop Track 100 000 tons of ballast shall be stockpiled in the cleared area to the South East of the primary stockpile area and as shown on the drawings

PDF Augmented dataset for multidimensional ballast

Ballast plays an essential role in the response of a railroad track to repeated loading Ballast degradation may lead to poor drainage lateral instability and excessive settlement

Railroad Ballast Movements Pattern Recognition by Using

Rail ballast as it is known is an important part of railway infrastructure Unfavorable ballast performances can contribute to damage and deterioration of above structures such as the rail and tie [1 2 3 4] There are several factors can be taken into consideration on the effect of the ballast failure load magnitude load frequency moisture content and

Toward Automated Field Ballast Condition Evaluation

Ballast degradation in the track substructure may cause poor drainage settlement and reduced lateral stability that may affect safety daily operations and long term maintenance of a railroad

Track Standards Manual Section 6 Ballast and Formation

This section of the Track Standards Manual sets down the minimum requirements for ballast and formation It also specifies the inspection requirements and the actions to be taken when formation defects are found

What is Railroad Ballast & How Do We Maintain It R&S Track

The importance of the ballast shouldn t be lost on anyone as it truly is the foundation of all railroads We employ several tools to manage ballast Railroad Ballast Hopper Cars These are a special kind of hopper car which allow the dumping of ballast on railroads during both construction and maintenance

Deep Learning Approach for Automated Railroad Ballast

The objective of this paper is to introduce and validate the deep learning based ballast evaluation system recently developed by the authors [6 7] using ballast images collected at the High Tonnage Loop HTL of the Transportation Technology Center TTC in Pueblo selecting the target working areas the system was assembled and deployed to

Alaska Railroad Corporation

Ballast and Riprap Curry Quarry Bids will be received until Thursday February 7 2019 3 00 PM local time Alaska Railroad Corporation will be known as ARRC in the addendum CHANGES Addendum number 1 has been issued for clarification to the following specifications The ARRC will perform the initial survey of the stockpile pad The

Ballast Distribution Machine Automated Conveyor Train

Herzog created the ballast distribution machine as a reliable solution to stockpile rock in curves & S curves from routine maintenance to emergency tasks Herzog Railroad Services Inc 816 233 9002 700 S Riverside Rd St Joseph MO 64507 Send a message

TECHNICAL SPECIFICATIONS SECTION 240 RAILROAD

Fairmont C154BR ballast regulator or approved equal and all ballast removed from the top of crossties tie plates and base of rail by the ballast regulator broom 12 Surplus ballast remaining after final surfacing and dressing of the ballast section shall be distributed or otherwise disposed of as directed by the Engineer 13

Calculate Ballast Rock 4" 6" Cubic Yard or Feet to Tons

Type in inches and feet of your project and calculate the estimated amount of Rip Rap / Boulders in cubic yards cubic feet and Tons that your need for your project The Density of Ballast Rock 4" 6" 2 410 lb/yd³ or t/yd³ or yd³/t

PDF Ballast Railroad Design SMART UOW Approach

Ballast Railroad Design SMART UOW Approach will not only become an imperative design aid for rail practitioners but will also be a valuable resource for postgraduate students and researchers

Railway ballast characteristics selection criteria and performance

Railway ballast fouling is always an inevitable issue related to railway performance and safety in ballasted tracks This paper presents an overview of the railway ballast fouling mechanism

Degradation induced evolution of particle roundness and its

Ballast degradation has a strong effect on railway track performance including accumulative deformation ballast resistance and drainage The main objective of this research is to determine the evolution of roundness during ballast degradation and investigate the mechanical properties of real ballast shape at different abrasion stages To this end the Los