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effects of rap on the mechanical properties of asphalt

effects of rap on the mechanical properties of asphalt

Effects of RAP on the Mechanical Properties of Asphalt ...

2018-2-13  Effects of RAP on the Mechanical Properties of Asphalt Mixes and Binder, and on the Predicted Pavement Performance Saman Esfandiarpour1, Ahmed Shalaby1, M. Alauddin Ahammed2, Tara Liske2, Said Kass2 1University of Manitoba, 2Manitoba

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Effects of Reclaimed Asphalt Pavement on Mechanical ...

2021-3-16  Results of the ANOVA were used to quantify the effects of RAP on the mechanical properties of the base materials. The data indicate that CBR values decrease as RAP content increases, with the greatest percentage reduction occurring with the addition of 25 percent RAP.

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Effects of production stages on blending and mechanical ...

However, the effects of the production stages of RAP mixtures on their blending as well as mechanical attributes are still unclear, particularly for high percentage RAP mixtures. The production stages that potentially can affect the blending between the virgin and RAP binders include the RAP binder transfer stage, mechanical blending stage, and ...

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Laboratory study of the effect of RAP conditioning on the ...

2013-6-27  This paper evaluates the effect of reclaimed asphalt pavement (RAP) laboratory conditioning on the rheological properties of recycled hot-mix asphalt. Four different conditioning processes were used on a single RAP source before mixing: unheated RAP, RAP heated at 110 °C in a microwave, RAP heated in a covered pan at 110 °C in a draft oven, and RAP heated in a non-covered pan at 110 °C in

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Effects of production stages on blending and mechanical ...

2017-9-15  The results of the 26 percent RAP mixtures indicated that the diffusion is the most dominant stage that affects blending and mechanical properties of the RAP mixtures. However, this conclusion is needed to be validated by other sources of RAP materials and the asphalt mixtures with a higher RAP percent, e.g. 50 percent.

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Assessing the effects of recycled asphalt pavement ...

Recycled asphalt pavement (RAP) materials are used in roller compacted concrete. ... This paper evaluate the effects of various RAP sizes as substitute of coarse and fine natural aggregate (NA) on the mechanical properties and durability of roller compacted concrete (RCC). The RAP and NA materials are characterized and compared. The mechanical ...

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Assessing the effects of recycled asphalt pavement ...

2015-12-30  The authors have indicated in their studies that the mechanical properties of concrete decreased with increasing RAP materials content in the mix. If 100% of natural sand was replaced by 100% of fine RAP fraction, the decrease was about 32% and reached up to 55% when 100% of coarse RAP materials are used.

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The Influence of PelletRAP™ Rejuvenator on the

2021-2-1  The Influence of PelletRAP™ Rejuvenator on the Mechanical Properties of Reclaimed Asphalt Pavement. Z H Al-Saffar 1,2, H ... the chemical and rheological attributes of aged asphalt: synergistic effects of maltene and waste engine oil ... of six rejuvenators on the performance properties of Reclaimed Asphalt Pavement (RAP) ...

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Mechanical Properties of High-Modulus Asphalt Concrete ...

High-modulus asphalt concrete (HMAC) possesses excellent rutting resistance and has received increased attention around the world. While many studies have been conducted on the performance of hot mix asphalt (HMA) containing reclaimed asphalt pavement (RAP), gaps remain in knowledge about producing HMAC containing RAP.

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Evaluation on the mechanical performance of recycled ...

To restore properties of the aged bituminous binder in RAP, rejuvenators designed with diverse viscosity levels and their rejuvenating effects have been investigated in previous studies. However, the influence of self-developed rejuvenators on the mechanical performance of high percent RAP recycled asphalt mixtures is not clear.

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Effects of Reclaimed Asphalt Pavement on Mechanical ...

2021-3-16  EFFECTS OF RECLAIMED ASPHALT PAVEMENT ON MECHANICAL PROPERTIES OF BASE MATERIALS Dane A. Cooley Department of Civil and Environmental Engineering Master of Science Reuse of reclaimed asphalt pavement (RAP) in the full-depth recycling (FDR) process is a cost-effective and environmentally responsible method of asphalt pavement reconstruction.

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Effects of laboratory mixing methods and RAP materials on ...

The primary work reported in this thesis is concerned mainly with the effects of different mixing methods and RAP materials on homogeneity and mechanical properties of hot recycled asphalt mixtures. The recycled asphalt mixture conforms to the requirement of BS 4987-1 (2005) for dense bitumen macadam size 10 mm (DBM 10 mm). The proportion of RAP in the recycled mixture is 40%.

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Effects of RAP residual asphalt binder type, content and ...

This paper evaluates the effects of reclaimed asphalt pavement (RAP) residual binder characteristics on the mechanical behaviour of cold recycled cement-treated mixtures. RAP samples with different binder types (conventional, polymer and rubber), contents (4.5% and 5.5%) and ageing conditions were produced in laboratory.

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Effects of Reclaimed Asphalt Pavement on Mechanical ...

2007-1-1  Effects of Reclaimed Asphalt Pavement on Mechanical Properties of Base Materials W. Spencer Guthrie, Dane Cooley, and Dennis L. Eggett Transportation Research Record 2007 2005 : 1 ,

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(PDF) Effects of warm-mix asphalt additives on workability ...

Effects of warm-mix asphalt additives on workability and mechanical properties of reclaimed asphalt pavement material Journal of the Transportation Research Board, 2009. Mingjiang Tao. Download PDF. Download Full PDF Package. This paper. A short summary of this paper.

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Effects of maltene on the attributes of reclaimed asphalt ...

Subsequently, the mechanical characteristics of asphalt mixtures were analysed using Marshall Stability, moisture damage, resilient modulus (MR), and Cantabro loss tests. The results demonstrated that 8% and 16% of maltene restored the physical properties of 30% and 50% of RAP binder, respectively.

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Article Metrics Effects of reclaimed asphalt binder on ...

Reclaimed asphalt pavement (RAP) material is widely used for construction of sustainable pavements. Inclusion of RAP binder with crumb rubber modified (CRM) binder can provide added advantage in terms of reduced materials cost and solution to waste disposal problem. However, addition of aged of RAP binder to stiffer CRM may discourage the use of such combination. In the present study, it was ...

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Statistical analysis of the influence of RAP and mix ...

2013-12-4  Effects of RAP on asphalt mixture complex modulus and fatigue life. Various studies have been conducted in order to evaluate the influence of RAP content on mechanical properties of mixtures. In general, the addition of RAP material is observed to cause a significant increase of complex modulus of mixes . The increase becomes more important ...

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A Review on the Durability of Recycled Asphalt Mixtures ...

Reclaimed asphalt pavement (RAP) has received much attention recently due to its increased use in hot mix asphalt (HMA) pavements to enhance pavement sustainability. The use of aged asphalt in RAP, which is highly oxidised and has lost its properties due to exposure to traffic loads and climatic conditions throughout its lifespan, can cause asphalt mixtures to stiffen and embrittle, thus ...

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Mechanical Properties of Pavement Quality Concrete ...

2018-12-31  Production of conventional coarse aggregates for concrete works is getting difficult because of depleting natural resources and environmental ill effects. Reclaimed Asphalt Pavement (RAP

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"Effects of Reclaimed Asphalt Pavement on Mechanical ...

Reuse of reclaimed asphalt pavement (RAP) in the full-depth recycling (FDR) process is a cost-effective and environmentally responsible method of asphalt pavement reconstruction. Although FDR has been used for several years in some locations, the effect of RAP on the mechanical properties of recycled base materials has not been well documented.

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Effects of RAP residual asphalt binder type, content and ...

RAP content was varied between 0 and 100% in order to study the effects of this parameter on the mechanical properties. Portland cement content was kept constant at 6% by weight of dry constituents.

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Effects of Reclaimed Asphalt Pavement on Mechanical ...

2007-1-1  Effects of Reclaimed Asphalt Pavement on Mechanical Properties of Base Materials W. Spencer Guthrie, Dane Cooley, and Dennis L. Eggett Transportation Research Record 2007 2005 : 1 ,

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Effect of rejuvenator types and mixing procedures on ...

To improve the cracking resistance of asphalt mixtures with high RAP contents, one of the approaches considered is the use of rejuvenators. Such rejuvenators, when used in high RAP asphalt mixtures, counteract the effects of the aged RAP binder and may have an impact on the volumetric properties

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An Evaluation of the Effects of Warm Mix Asphalt

2 An Evaluation of the Effects of Warm Mix Asphalt Additives on Workability and Mechanical Properties of Reclaimed Asphalt Pavement (RAP) Material

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Effects of maltene on the attributes of reclaimed asphalt ...

Subsequently, the mechanical characteristics of asphalt mixtures were analysed using Marshall Stability, moisture damage, resilient modulus (MR), and Cantabro loss tests. The results demonstrated that 8% and 16% of maltene restored the physical properties of 30% and 50% of RAP binder, respectively.

get price

Article Metrics Effects of reclaimed asphalt binder on ...

Reclaimed asphalt pavement (RAP) material is widely used for construction of sustainable pavements. Inclusion of RAP binder with crumb rubber modified (CRM) binder can provide added advantage in terms of reduced materials cost and solution to waste disposal problem. However, addition of aged of RAP binder to stiffer CRM may discourage the use of such combination. In the present study, it was ...

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Mechanical and Microstructural Properties of Asphalt ...

This study aims to characterize the mechanical and microstructural properties of asphalt binders prepared with 25 and 35% of RAP contents. A base binder of pen 60/70 (PG 64-22) was used in this study.

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A Review on the Durability of Recycled Asphalt Mixtures ...

Reclaimed asphalt pavement (RAP) has received much attention recently due to its increased use in hot mix asphalt (HMA) pavements to enhance pavement sustainability. The use of aged asphalt in RAP, which is highly oxidised and has lost its properties due to exposure to traffic loads and climatic conditions throughout its lifespan, can cause asphalt mixtures to stiffen and embrittle, thus ...

get price

Recycling of fine-asphalt-pavement solid waste for low ...

2021-4-4  This study aims to investigate the effects of using fine reclaimed asphalt pavement (RAP) and fly ash (FA) on the mechanical and shrinkage behaviors of rapid hardening Portland cement (RHPC) concretes. Thus, several tests were carried out to assess ...

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