Search results for "Micro-Deval"

showing 3 items of 3 documents

Evaluating the effect of mineralogy and mechanical stability of recycled excavation materials by Los Angeles and micro-Deval test

2021

This paper presents the findings of the mechanical performance of recycled excavation materials (REM). The aim was to document the stable performance of REM and to suggest its suitability for unbound applications. Test operations were performed at different schedules with the Los Angeles (LA) and micro-Deval (MD) test machine. X-ray diffraction (XRD) analysis was performed to examine the effect of mineralogy on the performance of REM. The results showed that REM showed consistent LA performance, but significant variations were observed in MD values. XRD results showed that up to 20% of chlorite and mica minerals had no influence on the LA performance of REM.

VDP::Teknologi: 500::Bygningsfag: 530Mechanical stabilityRecycled excavation materialsMicaExcavationGeotechnical engineeringLos Angeles testChloriteGeologyMicro-Deval test:Teknologi: 500 [VDP]Test (assessment)
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Review of the relationship between aggregates geology and Los Angeles and micro-Deval tests

2021

Rock aggregates constitute the enormous volume of inert construction material used around the globe. The petrologic description as igneous, sedimentary, and metamorphic types establishes the intrinsic formation pattern of the parent rock. The engineering properties of these rocks vary due to the differences in the transformation process (e.g. hydrothermal deposits) and weathering effect. The two most common mechanical tests used to investigate the performance of aggregates are the Los Angeles (LA) and micro-Deval (MD) tests. This study reviewed the geological parameters (including mineralogy, grain and crystal size, grain shape, and porosity) and the relationship to Los Angeles and micro-De…

Grain and crystal sizeMetamorphic rock0211 other engineering and technologiesMineralogyWeathering02 engineering and technology010502 geochemistry & geophysicsFeldspar01 natural sciences:Teknologi: 500 [VDP]Pore spaceParent rockGrain shapeQuartzLithification021101 geological & geomatics engineering0105 earth and related environmental sciencesMineralsGeologyGeotechnical Engineering and Engineering GeologyGrain sizeVDP::Teknologi: 500visual_artvisual_art.visual_art_mediumSedimentary rockLos Angeles testMicro-Deval testGeology
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Recycled aggregates derived from excavation materials — mechanical performance and identification of weak minerals

2022

AbstractThe present study investigates the mechanical performance of recycled aggregates derived from excavation materials (REM). REM is blended with different quantities of recycled phyllite materials (RPM) and is investigated by Los Angeles (LA) and micro-Deval (MD) tests. X-ray diffraction (XRD) and acid solubility test are performed on the pulverized fractions < 1.6 mm obtained from the LA and MD tests to assess the respective degree of fragmentation and wear of mineral components. The results of the materials in unblended conditions showed considerable difference between MD performance while similar performance was found for LA. Furthermore, about 40% of RPM was sufficient to blend …

Recycled excavation materialsRecycled phyllite materialsMicro-DevalVDP::Matematikk og Naturvitenskap: 400::Geofag: 450GeologyPhyllosilicatesGeotechnical Engineering and Engineering GeologyLos Angeles:Teknologi: 500 [VDP]
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