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Vieira, T., Sandberg, U. & Erlingsson, S. (2019). Negative texture, positive for the environment: effects of horizontal grinding of asphalt pavements. International Journal on Road Materials and Pavement Design, 1-22
Open this publication in new window or tab >>Negative texture, positive for the environment: effects of horizontal grinding of asphalt pavements
2019 (English)In: International Journal on Road Materials and Pavement Design, ISSN 1468-0629, E-ISSN 2164-7402, p. 1-22Article in journal (Refereed) Published
Abstract [en]

A pavement surface having deflections from a plane mostly directed downwards in valleys is said to have a “negative texture”, in contrast to a “positive texture” dominated by peaks. Negative textures are typical of porous asphalt pavements, but another way to achieve this feature is to grind off the peaks of the surface. This paper explores the effects of grinding off texture peaks in the horizontal plane on a number of Swedish asphalt pavements in order to reduce noise and rolling resistance. Noise measurements were made to evaluate the ground-off surfaces versus the original surfaces, and, in most cases, also rolling resistance, texture and friction were also evaluated. It was found that grinding led to a more negative texture, tyre/road noise reductions up to 3 dB and tyre/road rolling resistance reductions up to 15%. It is concluded that horizontal grinding provides a maintenance operation with a significant potential for reduction of noise and rolling resistance, without sacrificing friction, though with limited longevity.

Place, publisher, year, edition, pages
Taylor & Francis, 2019
National Category
Infrastructure Engineering
Research subject
Civil and Architectural Engineering
Identifiers
urn:nbn:se:kth:diva-250569 (URN)10.1080/14680629.2019.1610476 (DOI)
Note

QC 20190819

Available from: 2019-04-30 Created: 2019-04-30 Last updated: 2019-08-19Bibliographically approved
Vieira, T. & Sandberg, U. (2018). Negative Texture, Positive for the Environment: Results of Horizontal Grinding of Asphalt Pavements. In: : . Paper presented at Transportation Research Board Annual Meeting 2018. Washington, D.C., USA, Article ID 18-01513.
Open this publication in new window or tab >>Negative Texture, Positive for the Environment: Results of Horizontal Grinding of Asphalt Pavements
2018 (English)Conference paper, Published paper (Refereed)
Abstract [en]

A pavement surface having its texture deflections mostly directed downwards is said to have a “negative texture” and is expected to result in positive tire/road noise and rolling resistance properties. Negative textures are typical of porous asphalt pavements, but another way to achieve this is to grind-off the top of the asperities of a rough-textured surface. This paper explores the application of grinding pavement texture by tools operating in the horizontal plane (not to be confused with common “diamond grinding” which is made by tools operating in the vertical plane) on a number of asphalt pavements in Sweden, including porous asphalt and stone matrix asphalt. Noise measurements with the Close Proximity method were carried out to evaluate the different acoustical performance of the ground and the original surfaces. In most cases, also tire/road rolling resistance was measured. Texture and wet friction measurements were carried out to characterize how the grinding operation changed the surface texture. It was demonstrated that the grinding treatment led to a more negatively skewed surface texture, resulting in an A-weighted noise reduction up to 3 dB, while rolling resistance coefficients were reduced by up to 15 %. It is concluded that horizontal grinding indeed creates more “negative textures”, which results in improved noise and rolling resistance properties without sacrificing friction, though with limited longevity.

Place, publisher, year, edition, pages
Washington, D.C., USA: , 2018
Keywords
pavement, texture, grinding, noise, rolling resistance
National Category
Infrastructure Engineering
Identifiers
urn:nbn:se:kth:diva-222134 (URN)
Conference
Transportation Research Board Annual Meeting 2018
Funder
Mistra - The Swedish Foundation for Strategic Environmental Research
Note

QC 20180212

Available from: 2018-02-01 Created: 2018-02-01 Last updated: 2018-02-14Bibliographically approved
Sandberg, U., Mioduszewski, P., Ejsmont, J. & Vieira, T. (2016). Noise and Rolling Resistance Properties of Various Types of Winter Tyres Compared to Normal Car Tyres. In: Proceedings of the Inter-Noise 2016: . Paper presented at Proceedings of the Inter-Noise 2016, Hamburg; Germany; 21 August 2016 through 24 August 2016 (pp. 1737-1746). German Acoustical Society (DEGA)
Open this publication in new window or tab >>Noise and Rolling Resistance Properties of Various Types of Winter Tyres Compared to Normal Car Tyres
2016 (English)In: Proceedings of the Inter-Noise 2016, German Acoustical Society (DEGA) , 2016, p. 1737-1746Conference paper, Published paper (Refereed)
Abstract [en]

To cope with winter weather conditions, potentially including snow and ice, it is common to use winter tyres, or "all-seasons" tyres assumed to be safe both in summer and winter. In some northern countries, winter tyres are mandatory. It is commonly assumed that winter tyres are noisier than normal tyres (here called summer tyres) and winter tyres equipped with studs are assumed to be extra noisy. This paper presents a study where noise and rolling resistance properties of tyres for winter conditions are compared to summer and all-season tyres. The winter tyres include types optimized for central European climate, tyres optimized for Nordic climate and tyres with studs. In total, approx. 50 car tyres have been tested. Noise properties have been measured with the CPX method and rolling resistance has been measured with a trailer method; all measurements made on two road surfaces; SMA 8 and DAC 16. Results indicate that winter tyres are not noisier than summer tyres; except for studded tyres. Despite high differences among individual tyres, rolling resistance is approximately similar among the main types; surprisingly including also studded tyres. An alarming result was that there was no correlation between measured values and values on the tyre labels.

Place, publisher, year, edition, pages
German Acoustical Society (DEGA), 2016
Keywords
tyre, winter, climate, stud, noise, rolling resistance, tyre label
National Category
Infrastructure Engineering
Identifiers
urn:nbn:se:kth:diva-222147 (URN)2-s2.0-84994571118 (Scopus ID)
Conference
Proceedings of the Inter-Noise 2016, Hamburg; Germany; 21 August 2016 through 24 August 2016
Funder
Swedish Transport Administration
Note

QC 20180201

Available from: 2018-02-01 Created: 2018-02-01 Last updated: 2018-02-14Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0001-8057-6031

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