Effect of waste materials on acoustical properties of semi-dense asphalt mixtures

The possibility of using waste materials in road construction is of great interest as their utilisation may contribute to reducing the problems of hazard and pollution and conserve natural resources. Thus, there is an urgent need to find a sustainable method for using waste materials as a substitute in the standard asphalt binders. There are several concerns about the physical and chemical properties and mechanical performance of asphalt pavements incorporated with waste material in the effort to reduce permanent deformation of the road surface. This review article presents a brief discussion of the asphalt mixtures modified with waste material, and the recycled materials used as a modifier in the asphalt mixture. The present paper summarises the use of crumb rubber, crushed concrete, steel slag, glass fibre and plastic waste in asphalt mixtures. The use of waste materials as a modifier in asphalt mixture resulted in improved asphalt pavement performance. Results advocate that rubberised asphalt mixture with desired properties can be designed as an additive with a friendly environmental approach in construction materials. The researches that adopted the influence of usage, recycle waste material to improve the performance of the asphalt of the road are still limited compared to other construction fields. Doi: 10.28991/cej-2020-SP(EMCE)-05 Full Text: PDF

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A REVIEW OF THE USE OF RECLAIMED ASPHALT PAVEMENT FOR ROAD PAVING APPLICATIONS

Jurnal Teknologi ◽

10.11113/jt.v82.14320 ◽

2020 ◽

Vol 82 (3) ◽

Author(s):

Abdalrhman Milad ◽

Aizat Mohd Taib ◽

Abobaker G. F Ahmeda ◽

Mohmed Solla ◽

Nur Izzi Md Yusoff

Keyword(s):

Asphalt Pavement ◽

Cost Effective ◽

Asphalt Mixtures ◽

Waste Materials ◽

Reclaimed Asphalt Pavement ◽

Moisture Resistance ◽

Critical Importance ◽

Reclaimed Asphalt ◽

Road Paving ◽

The Cost

One of the most frequently used waste materials is reclaimed asphalt pavement (RAP). The use of RAP can help reduce the cost of a project and ensure that the project is eco-friendly. Therefore, the aim of this study is to give a detailed description of the production of RAP to ensure that the rehabilitation and maintenance of pavements as well as the construction of pavements are environmentally friendly and cost effective. Previous works have shown the benefits of using RAP with regard to its ability to produce equally good or even superior results compared to the use of virgin or original mixes if they are properly produced and applied. Among the benefits of RAP mixes are good moisture resistance and higher density. This review also demonstrate the critical importance of using RAP in asphalt mixtures.

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Performance evaluation of recycled asphalt mixtures by construction and demolition waste materials

Construction and Building Materials ◽

10.1016/j.conbuildmat.2016.05.117 ◽

2016 ◽

Vol 120 ◽

pp. 450-456 ◽

Cited By ~ 39

Author(s):

Saeed Fatemi ◽

Reza Imaninasab

Keyword(s):

Performance Evaluation ◽

Asphalt Mixtures ◽

Construction And Demolition Waste ◽

Waste Materials ◽

Demolition Waste ◽

Recycled Asphalt

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Sustainability Assessment of Green Asphalt Mixtures: A Review

Environments ◽

10.3390/environments6060073 ◽

2019 ◽

Vol 6 (6) ◽

pp. 73 ◽

Cited By ~ 15

Author(s):

M. Reza Pouranian ◽

Mehdi Shishehbor

Keyword(s):

Sustainability Assessment ◽

Economic Effect ◽

Fatigue Cracking ◽

Recent Decade ◽

Crumb Rubber ◽

Economic Benefits ◽

Asphalt Mixtures ◽

Waste Materials ◽

Moisture Susceptibility ◽

Reclaimed Asphalt

During recent decade, the pavement sustainability has received much attention by road agencies, companies, governments and research institutes. The aim of this paper is to introduce and evaluate the sustainability of the technologies developed or underdeveloped to address environmental issues of asphalt mixtures, and the waste materials and by-products that can be recycled and reused in asphalt production. Warm Mix Asphalt (WMA) technology, the most popular waste materials to substitute neat binder (crumb rubber modifier (CRM), recycled plastic (RP), vacuum tower bottoms (VTB)) and/or virgin aggregates (reclaimed asphalt pavement (RAP), reclaimed asphalt shingles (RAs), construction and demolition (C and D) wastes, steel and copper slags), and bio-binders were evaluated with respect to their environmental and economic benefits and engineering performance as the main components of pavement sustainability. The performance evaluation was carried out by examining rutting, moisture susceptibility, thermal and fatigue cracking resistance. Two main environmental impacts, greenhouse gas (GHG) emission, and energy consumption were considered to study the environmental effects of these technologies and materials. Additionally, the economic effect was investigated considering initial cost and long-term benefit. Results of investigation illustrated that although each individual technology and waste material is valuable in terms of performance and/or the environment, specific combinations such as WMA + RAP, WMA + CRM, RAP + CRM, and WMA + CRM + RAP lead to further benefits. Notably, these combinations suffer from a lack of comprehensive economic analysis, thus, their sustainability cannot be fully assessed and is prone to future studies.

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Investigating the Rutting Behavior of Modified Asphalt Mixtures with Waste Materials

Numerical Methods in Civil Engineering ◽

10.29252/nmce.3.4.53 ◽

2019 ◽

Vol 3 (4) ◽

pp. 53-65

Author(s):

D. Moazami ◽

A. Sahaf ◽

A. Mohamadzadeh Moghaddam ◽

◽

...

Keyword(s):

Asphalt Mixtures ◽

Waste Materials ◽

Modified Asphalt ◽

Rutting Behavior

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Evaluation of waste materials as alternative sources of filler in asphalt mixtures

Materials and Structures ◽

10.1617/s11527-017-1126-3 ◽

2017 ◽

Vol 50 (6) ◽

Cited By ~ 10

Author(s):

V. Antunes ◽

A. C. Freire ◽

L. Quaresma ◽

R. Micaelo

Keyword(s):

Asphalt Mixtures ◽

Waste Materials ◽

Alternative Sources

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Use of polymer modified binders as rejuvenators in recycled asphalt mixtures

International Journal of Pavement Research and Technology ◽

10.1007/s42947-020-6006-5 ◽

2020 ◽

Vol 13 (6) ◽

pp. 654-664

Author(s):

Hélder P. Torres ◽

Sara R. M. Fernandes ◽

Carlos D. A. Loureiro ◽

Caroline F. N. Moura ◽

Hugo M. R. D. Silva ◽

...

Keyword(s):

Mechanical Performance ◽

Permanent Deformation ◽

Asphalt Mixture ◽

Asphalt Mixtures ◽

Production Costs ◽

Waste Materials ◽

Recycled Asphalt ◽

Water Sensitivity ◽

Modified Binders ◽

Road Paving

AbstractRoad paving recycling has been acquiring more relevance in society, especially within the paradigm of a circular economy. The addition of waste materials in asphalt mixtures is an excellent solution to face the gradual emergence of a great diversity of waste materials and reduce the production costs. This study aims to evaluate the addition of commercial and laboratory-produced polymer modified binders as rejuvenators in recycled asphalt mixtures with high contents of reclaimed asphalt pavement material (RAP). A commercial polymer modified binder (PMB) and a conventional bitumen modified with 5% of styrene-butadiene-styrene (SBS) or 4% of Regefalt were added to RAP aged bitumen and compared with a rejuvenated binder. Fatigue, permanent deformation and water sensitivity tests carried out on recycled mixtures produced with those binders showed that polymer modified binders could be used as rejuvenators to improve their performance significantly. The recycled asphalt mixture produced with the commercial PMB presented the best mechanical performance. The polymer-modified binders revealed an ageing resistance equivalent to that of the control rejuvenated binder, or slightly better in the case of the final binder with SBS polymer.

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