Role of aggregate petrography in micro-texture retention of greywacke surfacing aggregate

Perry, Marvin

doi:10.1080/14680629.2014.923781

Cited by 12 publications

(3 citation statements)

References 12 publications

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“…The ability to maintain the microtexture of grains, and thus secure sufficient friction, increases traffic security due to shortening of the braking distance (Hogervorst 1974;Luce et al 2007). The skid resistance of rocks is highly variable, being dependent on several factors among which rock fabric and contrasting hardness of the rock-forming minerals present seem to be the most significant (Knill 1960;Gutt and Nixon 1972;Fernández et al 2013;Perry 2014). For road surfacing aggregates, the resistance to acquiring a polish is evaluated in the laboratory, and expressed as the polished stone value (PSV) (Smith and Collis 2001, and references therein).…”

Section: Introductionmentioning

confidence: 99%

Relationship between polished stone value (PSV) and Nordic abrasion value (A N) of volcanic rocks

Krutilová

Přikryl²

2015

Bull Eng Geol Environ

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A set of 39 different volcanic rocks was studied for performance as crushed stone for road surfacing (wearing course) aggregates using two technological tests: the polished stone value (PSV) test, aimed at evaluating resistance to polishing (skid resistance), and the Nordic abrasion value (A N ) test, as a proxy to wear by studded tires (resistance to abrasion). In order to understand better the observed relationships, the studied volcanic rocks were split into five petrographic-technological subgroups (rhyolite/porphyry, phonolites, basalts s.l., spilites, and melaphyres/diabase) based on their composition, rock fabric, geological age, and post-genetic history. Response of each of these subgroups to the applied tests is not always the same, but generally is controlled by composition and rock macro-and microfabric. Despite the fact that positive contributors to skid resistance (e.g., increasing contrasting hardness of rock-forming components, presence or absence of certain phenocrysts) have the opposite effect on wear by studded tires, it is not possible to make any reliable prediction of PSV from A N or vice versa.

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Section: Introductionmentioning

confidence: 99%

Relationship between polished stone value (PSV) and Nordic abrasion value (A N) of volcanic rocks

Krutilová

Přikryl²

2015

Bull Eng Geol Environ

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“…In actual traffic conditions the phenomenon of polishing of the protruding aggregate grains is caused by traffic. Due to the fact that micro-texture exists on a microscopic scale, it is very difficult to assess it [4]. The paper presents the evaluation of the skid resistance properties of five bituminous wear courses from the SMA grit mastic during exploitation, based on macro analysis and micro-texture analysis of the test specimens.…”

Section: Introductionmentioning

confidence: 99%

The effective estimation of skid resistance of SMA pavements in relevant aspect of safety and durability of asphalt roads

Stankiewicz

Slabonski²,

Slabonska³

2018

MATEC Web Conf.

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The role of skid resistance of road pavements in ensuring safety of road traffic becomes particularly important when such surfaces become moist or wet. The various types of aggregates and special additives play an important role in asphalt mixtures like SMA, because they fill voids in paving mix and improve the cohesion of asphalt binder. The paper presents the evaluation of skid resistance of five kinds of SMA pavements, during exploitation, based on macro-texture and micro-texture comprehensive analysis. Tests were performed on five research pavement sections made from SMA on roads located in the southern part of Poland. SRT 3 equipment and methodology were used to all estimation of pavement roughness. The micro-texture and macro-texture of asphalt surface in pavements evolve under the influence of traffic and synergistic environmental interaction. The experimental parts of SMA pavements were observed in relevant aspect of skid resistance and durability using electronic microscopy type KEYENCE VHX-6000 Digital. The results of evaluation were compared with data from a literature review.

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“…Commonly used are the SCRIM (Side force Coefficient Routine Investigatory Machine) (Oliver 2009, Echaveguren et al 2010, the Skiddometer (Leandri and Losa 2015), or the GripTester (Flintsch et al 2009;Najafi et al 2013). For the assessment of the polishing and skid resistance in the laboratory, the polished stone value (PSV) method has been in use for decades (Perry et al 2001, Erichsen 2009, Shabani et al 2013, Perry 2014, Dokic et al 2015. However, the PSV method is limited to the coarse aggregate fraction and does not take into account the actual surface texture of a road pavement including the binder component, filler and fine aggregates.…”

Section: Introductionmentioning

confidence: 99%

A laboratory procedure for predicting skid and polishing resistance of road surfaces

Hofko

Kugler

Chankov

et al. 2017

International Journal of Pavement Engineering

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Skid resistance of road surfaces is an important safety parameter. Decreasing skid resistance correlates with increasing number of accidents. The presented study aims for a correlation between lab-based polishing simulation and skid resistance measurement and evolution of the skid resistance under traffic in the field. A prediction model for skid and polishing resistance based on the Wehner/Schulze device was developed. The lab procedure as a basis for the model works on the hypothesis that a maximum level of skid resistance exists that can be regenerated even from a highly polished state by sandblasting of the surface. This hypothesis was verified for an asphalt and concrete surface material. The prediction model was set up by correlating field data on skid resistance and traffic volume from 14 test sections to cores taken from these test sections and tested in the lab. A linear regression links the cumulated traffic volume in the field with the number of polishing passes in the Wehner/Schulze device. Thus, it is possible to simulate millions of wheel passes within a couple of hours in the lab to generate equal skid resistance level and predict the skid resistance level of a road surface after years under traffic. 1.1. Motivation and objectives The present situation in many road design guidelines, e.g. (FSV 2015), is to set requirements regarding the skid and polishing resistance of the coarse and/or fine aggregate fraction of a surface

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Role of aggregate petrography in micro-texture retention of greywacke surfacing aggregate

Cited by 12 publications

References 12 publications

Relationship between polished stone value (PSV) and Nordic abrasion value (A N) of volcanic rocks

Relationship between polished stone value (PSV) and Nordic abrasion value (A N) of volcanic rocks

The effective estimation of skid resistance of SMA pavements in relevant aspect of safety and durability of asphalt roads

A laboratory procedure for predicting skid and polishing resistance of road surfaces

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