Stone mastic asphalt (SMA) with crumb rubber according to a new dry-hybrid technology: A laboratory and trial field evaluation

Sangiorgi, Cesare; Tataranni, Piergiorgio; Simone, Andrea; Vignali, Valeria; Lantieri, Claudio; Dondi, Giulio

doi:10.1016/j.conbuildmat.2018.06.128

Cited by 54 publications

(27 citation statements)

References 21 publications

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“…The measured L CPtr values at 50 km/h were also lower than other values reported in aSMA5 mixture type (90.6 dB(A)) [14], although all the data were normalized at 20 • C. However, the higher noise values of SMA5 and SMA10 bituminous mixtures (80 and 50 km/h respectively) should be related to different construction characteristics or differences between the measurement techniques (for instance, the trailer employed for the CPX measurements). Besides, the average tire/pavement sound level measured at 50 km/h of mixture SMA11 (88.10 dB(A)) agrees with that presented in literature [16,20]. The average values measured at 80 km/h (95.10) also agree with the literature [16].…”

supporting

confidence: 90%

“…According to this research, their sound absorption coefficient was lower than 0.2. Finally, Sangiorgi et al [20] have recently studied SMA11 bituminous mixtures (with and without crumb rubber (CR) added by a "dry-hybrid technology") by means of the CPX method. The SMA11 mix without CR showed a CPX value of around 88.4 dB(A) at 50 km/h after 15 months in service.…”

Section: Introductionmentioning

confidence: 99%

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Functional Performance of Stone Mastic Asphalt Pavements in Spain: Acoustic Assessment

Vázquez

Terán

Luong³

et al. 2019

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Environmental noise is one of the problems modern societies face today. Traffic noise, especially the noise produced from tire/pavement interaction, plays a main role in environmental noise. Pavement rehabilitation with new bituminous mixtures is a good option for combatting noise pollution in urban areas. This paper studies the functional performance of two bituminous mixtures of stone mastic asphalt (SMA), fabricated with the same polymer modified binder, but with different maximum aggregate size (MAS) (SMA11 and SMA16). The acoustic absorption, the dynamic stiffness, the surface texture and the tire/pavement noise were assessed. The bituminous mixture type SMA16 has higher texture levels at nearly every depicted wavelength of the texture spectra. This characteristic may lead to its higher average tire/pavement sound level compared to the mixture SMA11. The influence of each texture wavelength on the different frequency bands of the tire/pavement noise spectrum was studied, however, this relation is not a simple matter. This paper also presents low-noise pavement labeling methodology (LNP labelingLA²IC). The mixtures SMA11 and SMA16 are labeled at 50 and 80 km/h. An acoustic label is a valuable tool for construction companies and urban planners to use in order to define the best option against noise when pavement rehabilitation must be carried out.

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confidence: 90%

Section: Introductionmentioning

confidence: 99%

Functional Performance of Stone Mastic Asphalt Pavements in Spain: Acoustic Assessment

Vázquez

Terán

Luong³

et al. 2019

Coatings

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“…To assess the effect of bitumen binder on the resistance to degradation of asphalt and bitumen-rubber-aggregate mixtures, a Cantabro test was carried out in accordance with the relevant standard [ 30 ] The author of the article [ 31 ] considers it appropriate to perform the Cantabro test not only for porous asphalt mixtures. This approach was also applied in the present study.…”

Section: Methods and Experimental Resultsmentioning

confidence: 99%

Effect of Addition of Rubber Granulate and Type of Modified Binder on the Viscoelastic Properties of Stone Mastic Asphalt Reducing Tire/Road Noise (SMA LA)

2020

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The use of rubber granulate in the composition of asphalt mixtures, as well as the use of poroelastic layers, is indicated by many research centers as a factor with a positive effect on tire/road noise reduction. Attention is however paid to their lower structural durability compared to asphalt concrete (AC) or stone mastic asphalt (SMA). Stone mastic asphalt reducing tire/road noise (SMA LA) layers have also been recently used as low-noise road surfaces. The article presents the test results of viscoelastic properties of asphalt mixtures SMA8 LA, SMA8 LA containing 10%, 20%, and 30% of rubber granulate, with bitumen 50/70, bitumen 50/70 modified with styrene butadiene styrene (SBS) copolymer, crumb rubber, and mixtures with bitumen modified simultaneously with crumb rubber and SBS copolymer. The reference asphalt mixture was the porous asphalt (PA8). The presented results of water damage resistance, degradation resistance in the Cantabro abrasion loss test, stiffness modulus as a function of temperature and hysteresis loop proved that the amount of rubber granulate and the type of binder significantly affect the values of these parameters. Attention was paid to the possibility of using the results of uniaxial cyclic compression tests when determining the proportion of rubber granulate in SMA8 LA mixtures. Tests of hysteresis loops and stiffness modulus confirm much higher elasticity of SMA8 LA mixtures with rubber granulate as compared to mixtures without the addition of granulate.

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“…It has also been shown that the incorporation of CRM into an asphalt mixture improves its modulus and its fatigue behaviour [7]. It has also been observed that the use of CRM bitumen in wearing layers has a sound-absorbing effect, reducing traffic noise pollution [8,9].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Warm Rubberized Stone Mastic Asphalt Mixtures through the Marshall and Gyratory Compactors

2020

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Stone mastic asphalt (SMA) mixtures exhibit excellent behaviour; they are highly resistant to reflective cracking and permanent deformation, as well as providing the wearing surface with an optimal texture. However, the production and compaction temperatures are similar to conventional mixtures, which means that there is a significant consumption of energy, as well as greenhouse gas emissions. Warm mix asphalt (WMA) technology, which has been developed over the last few years, might allow lower temperatures without compromising the mechanical behaviour of the mixtures. Also, over the last few decades, rubberized asphalt has proved to be effective in improving the performance and being environmentally suitable, but it requires higher production temperatures than conventional mixtures. In this study, several tests were performed to evaluate the effect of a chemical WMA additive on the compactability and water sensitivity of rubberized SMA mixtures with both the Marshall and the gyratory compactor. The investigation has shown that the gyratory compactor is more suitable for studying compactability and the water sensitivity of rubberized SMA with WMA additives.

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Stone mastic asphalt (SMA) with crumb rubber according to a new dry-hybrid technology: A laboratory and trial field evaluation

Cited by 54 publications

References 21 publications

Functional Performance of Stone Mastic Asphalt Pavements in Spain: Acoustic Assessment

Functional Performance of Stone Mastic Asphalt Pavements in Spain: Acoustic Assessment

Effect of Addition of Rubber Granulate and Type of Modified Binder on the Viscoelastic Properties of Stone Mastic Asphalt Reducing Tire/Road Noise (SMA LA)

Evaluation of Warm Rubberized Stone Mastic Asphalt Mixtures through the Marshall and Gyratory Compactors

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