Results 151 to 160 of about 30,102 (295)

Enhancing durability of steam‐cured precast concrete culverts using SCMs: A comparative study with delithiated beta spodumene

open access: yesStructural Concrete, EarlyView.
Abstract Steam curing is commonly used to manufacture precast culverts to accelerate early strength development. This study investigates the effect of supplementary cementitious materials (SCMs) on the permeability properties of steam‐cured precast concrete culverts.
Saugat Humagain   +3 more
wiley   +1 more source

Charging the polluters: A pricing model for road and railway noise [PDF]

open access: yes
This study outlines a method to estimate the short run marginal cost (SRMC) for road and railway noise. It is based on standardized calculation methods for total noise levels and monetary cost estimates from well established evaluation methods.
Ögren, Mikael, Andersson, Henrik
core  

Multi‐level fatigue reliability assessment of reinforced concrete railway bridges

open access: yesStructural Concrete, EarlyView.
Abstract This paper presents a multi‐level reliability framework for assessing the fatigue life of reinforced concrete (RC) railway trough bridges subjected to cyclic loading. The framework incorporates increasing levels of analytical complexity and real‐world data in four steps. First, an analytical model applies S–N curves and the Palmgren–Miner rule
Silvia Sarmiento   +7 more
wiley   +1 more source

Operations research in passenger railway transportation

open access: yes
In this paper, we give an overview of state-of-the-art OperationsResearch models and techniques used in passenger railwaytransportation. For each planning phase (strategic, tactical andoperational), we describe the planning problems arising there ...
Vromans, M.J.C.M.   +3 more
core  

The liberalisation of European railway markets - laissez faire versus interventionism: a comparative analysis of the approaches to railway privatisation in the United Kingdom and Germany.

open access: yes, 2002
This thesis comprises railway innovation in the 19th century, railway regulation, recent railway reforms across Europe and a theoretical analysis. The historical study is complemented by an investigation of the rationale for extensive regulations and ...
Knipping, O
core  

Effective axial strength of laterally strengthened RC pier heads with post‐tensioning method

open access: yesStructural Concrete, EarlyView.
Abstract This study investigates the structural performance enhancement of reinforced concrete (RC) pier heads laterally strengthened with unbonded post‐tensioning (PT) to accommodate increased design loads following a deck replacement of an existing railway bridge.
Yujae Seo   +3 more
wiley   +1 more source

Thermal Degradation and Thermal Decomposition of Plasticized PVC Including POSS Additives for PVC Compounds: Mechanisms, Impact, and Performance of Standards

open access: yesJournal of Vinyl and Additive Technology, EarlyView.
Additives' structures. ABSTRACT Poly(vinyl chloride) has been a key polymeric material since its commercial production in 1931, demonstrating versatility across numerous industries due to its compatibility with various additives. PVC's inherent properties, flame retardance, durability, and recyclability make it ideal for building and construction ...
Stefano Gardi   +4 more
wiley   +1 more source

Effects of complex soundscapes on the occurrence of Anaxipha pallidula in isolated green spaces in Tokyo

open access: yesWildlife Biology, EarlyView.
Urban green spaces experience a mix of natural and anthropogenic noises, which could disrupt the vocal communication of several species. This study investigated how such complex soundscapes affect the occurrence of Anaxipha pallidula, which communicates through calls, focusing on both sound level and quality.
Hiroki Mori, Takeshi Osawa
wiley   +1 more source

Recent Enhancements of Running Behaviour Analysis

open access: yes, 2004
Computational techniques allow a very efficient and inexpensive analysis of the running behaviour of railway vehicles. In this paper enhancements related to multibody simulation for three fundamental topics are briefly presented: A software environment ...
Kaiser, I., Carrarini, A., Schupp, G.
core  

The behaviour of railway level crossings: insights through field monitoring

open access: yes
The development of reliable methods for measuring deflections as trains pass has enabled valuable insights into railway track behaviour to be gained.
Powrie, W.   +5 more
core   +1 more source

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