Results 161 to 170 of about 888,293 (179)

Long-Term Wear of Aggregates Assessed by Micro-Deval Tests

2018
Aggregate tests are used worldwide to assess the durability of crushed stone. These standardized test methods aim to determine the resistance to wear by using given rotations as it is described in the European Norm of Micro-Deval test (EN 1097-1:2012). It recommends 12,000 rotations to determine the Micro-Deval coefficient of a rock.
Balázs Czinder, Ákos Török
openaire   +1 more source

Assessing the Polishing Characteristics of Coarse Aggregates Using Micro-Deval and Imaging System

Paving Materials and Pavement Analysis, 2010
Aggregates used in asphalt concrete should be tough and durable to withstand hot mix asphalt (HMA) production, transportation, construction, traffic loads and environmental effects. Aggregate morphology not only plays an important role in aggregates’ mechanical properties but also influences the asphalt pavement skid resistance.
Wenjing Xue, Cristian Druta, Linbing Wang, D. Stephen Lane   +3 more
openaire   +1 more source

Evaluation of Ballast Particle Degradation Under Micro-Deval Testing Using Photogrammetry

2021
Railway ballast plays an important role in the economic efficiency and sustainability of the rail transport. In this context, the morphology of its particles, in what regards the shape, angularity and surface texture, is critical and affects the mechanical performance of this aggregate material.
André Paixão, Carlos Afonso, Bruno Delgado, Eduardo Fortunato   +3 more
openaire   +1 more source

Characterization of Aggregate Susceptibility to Polishing Using the Micro-Deval Test

Transportation Research Record: Journal of the Transportation Research Board
Skid resistance is a critical pavement surface property affecting roadway safety, especially under wet weather conditions. This study evaluated the frictional characteristics of a wide variety of aggregates used in roadway construction in Ohio. The micro-Deval test was used to apply different levels of polishing (0, 60, 180, and 360 min) to each ...
Khalil Alafeef, Tariq Sharaf, Ala R. Abbas   +2 more
openaire   +1 more source

Comparative Evaluation of Micro-Deval Abrasion Test with Other Toughness/Abrasion Resistance and Soundness Tests

Journal of Materials in Civil Engineering, 2008
This study presents the findings from a research investigation conducted to characterize the toughness/abrasion resistance and soundness of aggregates from 23 sources using the micro-Deval, Los Angeles (LA) abrasion, sodium sulfate soundness, and magnesium sulfate soundness tests.
Prasada Rao Rangaraju, Jonathan Edlinski
openaire   +1 more source

Long-term abrasion of rocks assessed by micro-Deval tests and estimation of the abrasion process of rock types based on strength parameters

Engineering Geology, 2021
Balázs Vásárhelyi, Adam Torok
exaly  

Los Angeles and Micro-Deval Values of Volcanic Rocks and Their Use as Aggregates, Examples from Hungary

2014
Los Angles tests and micro-Deval tests are the two most common tests used for qualifying stones. The test procedures are described in two European standards, in EN 1097-2 and EN 1097-1, respectively. The paper provides an overview of the test results of Hungarian volcanic rocks.
openaire   +1 more source

Test Method for Resistance of Coarse Aggregate to Degradation by Abrasion in the Micro-Deval Apparatus

2008
  +5 more sources

Prediction the micro-Deval abrasion loss of rock aggregates from mainly the ultrasonic pulse velocity and some strength parameters

Arabian Journal of Geosciences, 2022
Håkan Guneyli, Suleyman Karahan
exaly  

Test Method for Resistance of Coarse Aggregate to Degradation by Abrasion in the Micro-Deval Apparatus

2021
openaire   +1 more source