Use of Thermally Treated Bentonite as Filler in Hot Mix Asphalt

Quintana, Hugo Alexánder Rondón; Ruge, Juan Carlos; Bastidas-Martínez, Juan Gabriel; Velandia-Castelblanco, Michael Yesid; Farias, Márcio Muniz de

doi:10.1061/(asce)mt.1943-5533.0003127

Cited by 18 publications

(8 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In fatigue tests under controlled strain, the mixtures that undergo better fatigue resistance are the minor stiffness. Nevertheless, under controlled stress, those with the increased stiffness [37,38]. On the other hand, it is evident that as the asphalt content increases, the D in the beams increases.…”

Section: Resultsmentioning

confidence: 99%

Assessment of the asphalt mixtures properties subjected to a flexural strength

Ruge

Quintana

Bastidas-Martínez

2022

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

Fatigue cracking by loading is one of the main mechanisms of damage to asphalt mixtures in service. Several studies worldwide have been conducted to try to understand the response that hot-mix asphalt undergo under this mechanism of damage. Despite the above, the fatigue phenomenon in asphalt mixtures is still not fully understood. The current research hypothesizes that the response under repeated loading of asphalt mixtures in fatigue tests can be more clearly understood through the one obtained under monotonic loading. For this reason, this study presents the results of the first phase of the research in which beams of asphalt mixtures were subjected to flexion using monotonic loads. The above, to correlate the evaluated properties with those obtained in a second phase where the response of the beams under repeated load (fatigue) will be measured. Beams made of two hot-mix asphalt mixes, two asphalt contents, and two different thicknesses were subjected to flexural strength tests. From the tests, the modulus of rupture, the maximum monotonic load that supports the beams in the failure state, the displacement in the failure state, and the relation between load and displacement were obtained. As a general conclusion of the study, it was obtained that the response experienced by the beams subjected to monotonic load has a broad correlation with the reported in the reference literature.

show abstract

Section: Resultsmentioning

confidence: 99%

Assessment of the asphalt mixtures properties subjected to a flexural strength

Ruge

Quintana

Bastidas-Martínez

2022

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

show abstract

“…An increase in fatigue resistance was observed in both gradations when NA was replaced with RCA according to volume and modified asphalt was used. This occurs because, generally, under stress-controlled conditions, the fatigue resistance of mixes increases with the increase in stiffness [52,77,87,88].…”

Section: Fatigue Testmentioning

confidence: 99%

Mechanical Performance of Gilsonite Modified Asphalt Mixture Containing Recycled Concrete Aggregate

2021

Self Cite

View full text Add to dashboard Cite

Hot-mix asphalts exposed to hot weather and high traffic volumes can display rutting distress. A material that can be used to increase the stiffness of asphalt binders is gilsonite. On the other hand, from an environmental point of view, the virgin natural aggregates of asphalt mixtures can be replaced with recycled concrete aggregates. For these reasons, this study modified the asphalt binder with gilsonite by wet-process to improve rutting resistance, and replaced (by mass and volume) part of the coarse fraction of the aggregate with recycled concrete aggregate in two hot-mix asphalts with different gradations. Unlike other studies, a larger experimental phase was used here. Marshall, indirect tensile strength, resilient modulus, permanent deformation, fatigue resistance, and Cantabro tests were performed. An ANOVA test was carried out. If the replacement of the virgin aggregate by recycled concrete aggregates was made by volume, both materials (gilsonite and recycled concrete aggregate) could be used in hot-mix asphalts for thick-asphalt layers in high temperature climates and any level of traffic. The use of both materials in hot-mix asphalts is not recommended for thin-asphalt layers in low temperatures climates. It is not advisable to replace the aggregates by mass.

show abstract

“…Los contenidos de asfalto para la mezcla de control MDC-AC fueron 4.5%, 5.0%, 5.5% y 6.0%, respectivamente. Lo anterior, basado en investigaciones donde fueron utilizados los materiales convencionales (agregados AC y CA 60-70) de la ciudad de Bogotá [17,20]. Se utilizaron mayores contenidos de asfalto en las mezclas con RCA con el fin de garantizar el recubrimiento de las partículas dada su elevada absorción.…”

Section: Materialesunclassified

Evaluación de una mezcla de concreto asfáltico con incorporación de agregados reciclados de concreto

et al. 2021

Self Cite

View full text Add to dashboard Cite

La generación y gestión de residuos sólidos industriales se considera una problemática ambiental a nivel mundial. Razón por la cual, diversos estudios se han enfocado en la implementación de Residuos de obras de Construcción y Demolición (RCD) para capas de pavimentos, centrándose en el uso de Agregados Reciclados de Concreto (RCA por sus siglas en inglés). El objetivo de este artículo fue establecer el impacto de la implementación del RCA en una mezcla asfáltica sobre algunas de sus propiedades físico-mecánicas, bajo tres escenarios: i) sustitución de la fracción gruesa, ii) fina y iii) 100% de la granulometría del agregado convencional (AC). Se evaluó la resistencia bajo carga monotónica de las mezclas (ensayos Marshall y Tracción Indirecta – RTI) y la resistencia al desgaste Cántabro. La sustitución de la fracción fina del AC por RCA, disminuye notablemente la resistencia bajo carga monotónica de la mezcla de referencia. Al sustituir la fracción gruesa, se cumplen los criterios de diseño de la mezcla asfáltica de referencia y se aumenta el RTI, pero se hace necesario incrementar ligeramente el contenido de asfalto. Al sustituir la totalidad de los agregados por RCA, se obtuvo un comportamiento satisfactorio ante la acción de cargas monotónicas, pero también se hace necesario incrementar ostensiblemente el contenido de asfalto. Un aumento del RCA en la mezcla incrementa la pérdida por desgaste Cántabro.

show abstract

Use of Thermally Treated Bentonite as Filler in Hot Mix Asphalt

Cited by 18 publications

References 47 publications

Assessment of the asphalt mixtures properties subjected to a flexural strength

Assessment of the asphalt mixtures properties subjected to a flexural strength

Mechanical Performance of Gilsonite Modified Asphalt Mixture Containing Recycled Concrete Aggregate

Evaluación de una mezcla de concreto asfáltico con incorporación de agregados reciclados de concreto

Contact Info

Product

Resources

About