Análise da implementação de mistura asfáltica com granulometria do tipo descontínua para redução de acidentes em pista molhada

Carvalho, Fernanda Santana; Machado, Cláudia Aparecida Soares; Bernucci, Liedi Légi Bariani

doi:10.14295/transportes.v28i3.1954

Cited by 3 publications

(1 citation statement)

References 11 publications

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“…Although binders modi ed with rubber improve the behavior of asphalt mixtures in general, Venudhara et al (2017) have found in various studies that discontinuous grades, such as gap graded, are more suitable for producing rubberized mixtures, and their behavior characteristics are signi cantly improved compared to conventional mixtures. Other authors have also analyzed the results of gap grading rubberized asphalt in the eld ( Van Kirk, 1997;Raad et al, 2001;Huang et al, 2002;Zborowski et al, 2004;Fontes et al, 2010;Zeiada et al, 2012;Chiu, 2008;Losa et al, 2012;Said et al, 2015;Carvalho et al, 2020;Buttlar & Rath, 2021, Nair & Hossain, 2022. In general, the behavior of these experimental sections carried out in different parts of the world indicated that the rubber gap mixtures showed a notable improvement in the behavior of asphalt paving in different tra c situations and environmental conditions compared to conventional asphalt binders.…”

Section: Introductionmentioning

confidence: 99%

Functional and Structural Assessment of an Experimental Section Gap Graded Modified with Sugarcane Bagasse Ash

Hipolito,

Ildefonso

2024

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Gap-graded aggregate combined with asphalt rubber is a high-performance alternative for roads with high traffic volumes which offers advantages over other conventional mixtures in terms of permanent deformation (rutting), fatigue life and texture. In this study, which made use of the already known mixture, conventional filler was replaced by sugarcane bagasse bottom ash (SCBA) at the proportion of 5% of the total mineral aggregates. The aim was improving the mechanical performance of asphalt coating and, at the same time, making sure that this type of waste will have an adequate destination. The residue, which was lighter, finer and rougher than conventional filler, changed the volumetric properties of the Marshall design, which means that the volume of voids in mineral aggregates and the voids filled with asphalt were increased considering the same volume of air voids (5.3%). Thus, there was an increase in the Marshall Stability (40%) and Indirect Tensile Test (22%) mechanical parameters. After laboratory analysis, the mixtures were applied as asphalt coating to a field of a high-traffic highway (BR-158). Field specimens showed that the modified mixture had an increase of 18% in the Resilience Modulus (4,088 MPa; 3,478 MPa). In addition, its Flow Number was 73% higher (16,707; 9,681) and its permanent deformation rate was 28% lower within 10,000 cycles in the dynamic creep test, which was corroborated by an 11% smaller permanent deformation rate in the Hamburg Wheel Tracking Device (HWTD), within 20,000 cycles (3.2 mm; 3.6 mm). Finally, it can be stated that partial replacement of conventional filler by sugarcane bagasse ash, within the established granulometric range, has proven technical feasibility both in laboratory and in the field.

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Section: Introductionmentioning

confidence: 99%

Functional and Structural Assessment of an Experimental Section Gap Graded Modified with Sugarcane Bagasse Ash

Hipolito,

Ildefonso

2024

Preprint

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Functional and structural assessment of an experimental section gap graded modified with sugarcane bagasse ash

Hipólito,

Ildefonso

2024

Sci Rep

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Gap-graded aggregate combined with asphalt rubber presents a high-performance alternative for roads with heavy traffic loads, offering advantages over conventional mixtures in terms of permanent deformation (rutting), fatigue life, and texture. In this study, the conventional filler in the wellestablished mixture was substituted with sugarcane bagasse bottom ash (SCBA) at a proportion of 5% of the total mineral aggregates. The objective was to enhance the mechanical performance of the asphalt coating while ensuring proper disposal of this waste material. Compared to conventional filler, SCBA is less dense, has smaller dimensions, and exhibits greater roughness, thereby affecting the volumetric parameters of the Marshall mix design. Consequently, the volume of voids in mineral aggregates and voids filled with asphalt increased while maintaining the same volume of air voids (5.3%). Consequently, there was a notable increase in Marshall Stability (40%) and Indirect Tensile Test (22%) mechanical parameters. Following laboratory analysis, the modified mixtures were applied as asphalt coating on a high-traffic highway (BR-158). Field specimens revealed an 18% increase in the Resilience Modulus (4088 MPa; 3478 MPa). Additionally, its Flow Number exhibited a 73% increase (16,707; 9681), and its permanent deformation rate was 28% lower within 10,000 cycles in the dynamic creep test. This was further supported by an 11% reduction in permanent deformation rate in the Hamburg Wheel Tracking Device (HWTD) within 20,000 cycles (3.2 mm; 3.6 mm). In conclusion, the partial replacement of conventional filler with sugarcane bagasse ash within the established granulometric range has demonstrated technical feasibility both in laboratory and field settings.

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A new approach to laboratory roller compaction method and its influence on surface texture and permanent deformation of asphalt mixtures

Oliveira

Bessa

Vasconcelos

et al. 2021

International Journal of Pavement Engineering

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Análise da implementação de mistura asfáltica com granulometria do tipo descontínua para redução de acidentes em pista molhada

Cited by 3 publications

References 11 publications

Functional and Structural Assessment of an Experimental Section Gap Graded Modified with Sugarcane Bagasse Ash

Functional and Structural Assessment of an Experimental Section Gap Graded Modified with Sugarcane Bagasse Ash

Functional and structural assessment of an experimental section gap graded modified with sugarcane bagasse ash

A new approach to laboratory roller compaction method and its influence on surface texture and permanent deformation of asphalt mixtures

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