Evaluation of Hot Mix Asphalt Macro- and Microtexture

Stroup-Gardiner, Mary; Studdard, J; Wagner, Chris

doi:10.1520/jte10861

Cited by 9 publications

(3 citation statements)

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“…Balmer [36] showed that about (0.02 inch to 0.12 inch) 0.5 to over 3 mm change in surface texture causes a difference of 16 km/h (10 mph) in speed for the initiation of hydroplaning [36] [37].…”

Section: Features Of the Pavement Surfacementioning

confidence: 99%

Pavement Friction and Skid Resistance Measurement Methods: A Literature Review

Mataei¹,

Zakeri²,

Zahedi³

et al. 2016

OJCE

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Driving safety is of significance in the automobile industry and transportation systems. Pavement skid resistance has long been recognized as the most important parameter in reducing traffic accidents especially in wet conditions. The knowledge of the friction coefficient and skid resistance is very valuable information for safety enhancement of roads. Thus, it is important to find proper methods for measuring skid resistance and frictional properties of the pavement surface. There is a wide range of measurement methods and devices for measuring skid resistance. This paper presents a review on the research studies that have been done on characterization of the frictional properties of the pavement surface and discussed methods used for measurement and evaluation of texture characteristics and the strengths and weaknesses of these methods. Finally, some ideas have been suggested to develop new methods for better and proper measurement of skid resistance.

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Section: Features Of the Pavement Surfacementioning

confidence: 99%

Pavement Friction and Skid Resistance Measurement Methods: A Literature Review

Mataei¹,

Zakeri²,

Zahedi³

et al. 2016

OJCE

View full text Add to dashboard Cite

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“…The influence of the mix design method on pavement texture was also investigated [Stroup-Gardiner et al 2004]. The authors compared different mixes (nine Marshall and nine Superpave mix designs) and road sections (located in Alabama) and…”

Section: Proportioningmentioning

confidence: 99%

Identification of Laboratory Technique to Optimize Superpave HMA Surface Friction Characteristics

Kowalski¹,

McDaniel²,

Olek³

2010

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Wet pavement friction is known to be one of the most important roadway safety parameters. In this research, frictional properties of flexible (asphalt) pavements were investigated. As a part of this study, a laboratory device to polish asphalt specimens was refined and a procedure to evaluate mixture frictional properties was proposed. Following this procedure, 46 different Superpave mixtures, one stone matrix asphalt (SMA) mixture and one porous friction course (PFC) mixture were tested. In addition, 23 different asphalt and two concrete field sections were also tested for friction and noise. The results of both field and laboratory measurements were used to develop an International Friction Index (IFI)-based protocol for measurement of the frictional characteristics of asphalt pavements for laboratory friction measurements. Based on the results of the study, it appears the content of high friction aggregate should be 20% or more of the total aggregate blend when used with other, polish susceptible coarse aggregates; the frictional properties increased substantially as the friction aggregate content increased above 20%. Both steel slag and quartzite were found to improve the frictional properties of the blend, though steel slag had a lower polishing rate. In general, mixes containing soft limestone demonstrated lower friction values than comparable mixes with hard limestone or dolomite. Larger nominal maximum aggregate size mixes had better overall frictional performance than smaller sized mixes. In addition, mixes with higher fineness moduli generally had higher macrotexture and friction.

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“…There are still no effective methods to accurately characterize microtexture until now. A number of studies used the British pendulum tester (BPN) to characterize microtexture and evaluate skid resistance at low speeds [9,10]. Liu et al found that the friction coefficient measured by BPN was significantly affected by macrotexture.…”

Section: Introductionmentioning

confidence: 99%

Effect of Mixture Design Parameters of Stone Mastic Asphalt Pavement on Its Skid Resistance

2019

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Although it is well known that the stone mastic asphalt (SMA) pavement has good skid resistance, the skid resistance is not satisfactory and its durability is poor when the mixture design is unreasonable. In order to obtain excellent skid resistance for SMA pavement, this paper seeks to analyze the influence of mixture design parameters on the skid resistance of SMA pavement. The mixtures were designed with an orthogonal experiment. There were five factors, namely the percentage of aggregates passing the maximum size (PNMSA), the percentage of aggregates passing the sieve size which is only one smaller than the maximum size (PNMSA-1), the percentage of aggregates passing the control sieve size (PCS), the percentage of aggregates passing the sieve size which is only one smaller than the control sieve size (PCS-1), and asphalt content (AC), and each factor had four levels. The skid-resistance index (SI) obtained by the 3D measurement was used to evaluate skid resistance. The results show that the three parameters (PNMSA, PCS, and AC) are the key parameters to improve skid resistance. Among them, PNMSA has the greatest impact on the skid resistance, AC is the second, and the impact of PCS on skid resistance is the smallest. Moreover, the design parameters with best skid resistance are proposed.

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Evaluation of Hot Mix Asphalt Macro- and Microtexture

Cited by 9 publications

References 0 publications

Pavement Friction and Skid Resistance Measurement Methods: A Literature Review

Pavement Friction and Skid Resistance Measurement Methods: A Literature Review

Identification of Laboratory Technique to Optimize Superpave HMA Surface Friction Characteristics

Effect of Mixture Design Parameters of Stone Mastic Asphalt Pavement on Its Skid Resistance

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