Influence of reclaimed asphalt with polymer modified bitumen on properties of different asphalts for a wearing course

Komačka, Jozef; Remišová, Eva; Liu, G.; Leegwater, G.; Nielsen, Erik R.

doi:10.1201/b16730-27

Cited by 11 publications

(7 citation statements)

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“…Since a lot of attention is being paid to the technologies that use lower temperature to produce and place asphalt mixtures [1,4,10,13,14,15,16,17,21], the tests were carried out on the specimens produced in the half warm mix asphalt process. To this end, the asphalt mix intended for the wearing course was designed.…”

Section: Tested Materialsmentioning

confidence: 99%

Resistance to Permanent Deformation of Asphalt Concrete with F-T Wax Modified Foamed Bitumen

Mrugała

Iwański

2015

Procedia Engineering

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Higher requirements concerning environmental protection and occupational health and safety entailed the development of new asphalt mix production technologies, characterized by production temperature lowered by 60 to 80°C. In addition to environmental advantages, such bituminous mixtures also provide technological and economical benefits. The reference asphalt concrete AC 22W and experimental foamed bitumen asphalt modified with F-T wax was designed to respond to the requirements named above. The production and compaction temperature of the foamed bitumen asphalt was 95°C (Half Warm Mix Asphalt). A traditional Hot Mix Asphalt was also produced for the purpose of comparison. The study investigated the effect of two factors: the amount of F-T synthetic wax (from 1.0% to 2.5% with an increment of 0.5%) and the amount of foamed bitumen (from 4.2 to 5.1, with an increment of 0.3%) on the development of permanent deformations in asphalt concrete, one of the most significant service parameters of the asphalt pavement. The results from the study indicate that the addition of F-T synthetic wax to the bitumen before foaming gives the asphalt concrete (produced at 95°C) resistance to permanent deformations comparable to that of the traditional asphalt concrete, produced at a temperature of 160°C.

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Section: Tested Materialsmentioning

confidence: 99%

Resistance to Permanent Deformation of Asphalt Concrete with F-T Wax Modified Foamed Bitumen

Mrugała

Iwański

2015

Procedia Engineering

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“…In order to meet these requirements, it is not only necessary to provide a suitable construction material (Stehlik at. al., 2015), (Komacka at. al., 2014), (Wu at.…”

Section: Introductionmentioning

confidence: 99%

Use of Adhesion Promoters in Asphalt Mixtures

Cihlářová

Fencl

Capayova

et al. 2018

Slovak Journal of Civil Engineering

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The purpose of asphalt binder as a significant binder in road constructions is to permanently bind aggregates of different compositions and grain sizes. The asphalt binder itself does not have suitable adhesiveness, so after a period of time, bare grains can appear. This results in a gradual separation of the grains from an asphalt layer and the presence of potholes in a pavement. Adhesion promoters or adhesive agents are important and proven promoters in practice. They are substances mainly based on the fatty acids of polyamides which should increase the reliability of the asphalt’s binder adhesion to the aggregates, thus increasing the lifetime period of the asphalt mixture as well as its resistance to mechanical strain. The amount of a promoter or agent added to the asphalt mixture is negligible and constitutes about 0.3% of the asphalt’s binder weight. Nevertheless, even this quantity significantly increases the adhesive qualities of an asphalt binder. The article was created in cooperatation with the Slovak University of Technology, in Bratislava, Slovakia, and focuses on proving the new AD2 adhesive additive and comparing it with the Addibit and Wetfix BE promoters used on aggregates from the Skuteč - Litická and Bystřec quarries.

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“…The poor condition of road network, which was subjected to previously unseen increase in traffic loads, driven numerous endeavours for new road construction materials, techniques and method to face the challenges of road sustainability [2][3][4][5][6][7][8][9][10][11][12]. In the cold recycling technology it is possible to convert the old construction layers into a new high quality base course with adequate mechanical and service properties while preserving the environment by reducing harmful vapor and greenhouse gas emissions.…”

Section: Introductionmentioning

confidence: 99%

Multivariate Optimization of Recycled Road Base Cold Mixtures with Foamed Bitumen

Chomicz-Kowalska

Maciejewski

2015

Procedia Engineering

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The paper presents an approach for identifying the optimum range of foamed bitumen and Portland cement contents in recycled mineral-bitumen road base mixtures using simultaneous optimization of response variables (i.e. properties of mixtures estimated from statistical models) with the use of desirability functions. The 16 evaluated mixtures had a common aggregate composition comprising materials from existing pavement layers (reclaimed asphalt pavement and aggregates from recycled crushed stone base layer) and virgin material. The mixtures varied in foamed bitumen contents (2.0% -3.5%) and Portland cement contents (1.0% -2.5%). The investigated mixture parameters included: air void content (V m ), indirect tensile strength (ITS), tensile strength retained (TSR) and indirect tensile stiffness modulus (ITSM) at 25°C. The use of the desirability functions and desirability index allowed to identify the effective and optimum range of binding agent dosing for the recycled mixture with respect to all of the measured mixture properties.

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Influence of reclaimed asphalt with polymer modified bitumen on properties of different asphalts for a wearing course

Cited by 11 publications

References 0 publications

Resistance to Permanent Deformation of Asphalt Concrete with F-T Wax Modified Foamed Bitumen

Resistance to Permanent Deformation of Asphalt Concrete with F-T Wax Modified Foamed Bitumen

Use of Adhesion Promoters in Asphalt Mixtures

Multivariate Optimization of Recycled Road Base Cold Mixtures with Foamed Bitumen

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