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| Autors principals: | , , |
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| Format: | Recurso digital |
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Zenodo
2025
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| Matèries: | |
| Accés en línia: | https://doi.org/10.5281/zenodo.19223049 |
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- <p>This research include studying the effect of moisture on virgin and recycled asphalt mixtures, the best gradation and design asphalt content was selected according to superpave method. Superpave Gyratory compactor (SGC) is used to compact mixtures with (100, and 150) mm in diameter of asphaltic specimens, the volumetric properties and mix design for binder layer are determined according to superpave design system, four different percent of (6 ,13, 19 and 25%) of RAP are used, the design asphalt contents are (4.4% and 4.21%) for asphalt grade (40-50),(60-70)mixtures respectively for preparation mixes to compared to virgin mixtures , where tensile strength ratio TSR is the measure of water sensitivity was determined and the Indirect Tensile strength was calculated via ITS test to measure the resistance of mixtures containing RAP materials to moisture and compared to virgin mixtures .the test results indicated that addition of RAP to mixes shows a significant increase on resistance to moisture damage.</p><p>The use of Reclaimed Asphalt Pavement (RAP) in different road applications become more widespread in last two decades. Using RAP has proven to be economical and environmentally sound. The materials present in old asphalt pavements have residual value even when the pavements have reached to ends of their service lives for that many agencies and contractors in different countries have made extensive use of RAP in producing new asphalt pavements to recognize the value of existing aggregate and asphalt (Arshad and Qiu 2013). Researchs has focused on the effect of RAP addition to bituminous mixes on the variability of volumetric and mechanical properties of recycled mixtures also the effect of RAP on pavement mechanical behavior. Some of these researches conclusion, mixtures with similar features as conventional ones were obtained using RAP contents between 10% and 30% (Alex K. et al. 2011). High RAP contents as 60% have also been prepared but its behavior depending mainly on the previous RAP homogenization and characterization treatments (Rodrigo Miró et al. 2011). The existing deteriorated highways networks in Iraq need huge reconstruction and major maintenance costs. It is essential to consider recycling as one of the imposed solutions in the future for rehabilitation of asphalt pavement. The target is to reuse the existing pavement materials for several causes, mainly to preserve natural resources such as aggregate, and to satisfy economic requirement by reducing the cost of highway construction. Recycling of asphalt pavement can save money, save energy when recycling is done on site, conserve diminishing resources of petroleum products, and help to meet the goal of reducing disposal of construction waste. (Sarsam, 2007). A.Tabakovic et al. (2006) indicated that addition (10%,20%,30%) of RAP decrease water sensitivity tests, the Indirect Tensile Strength Ratio (TSR) but was above the standard limit of 80%. Rodrigo Miró et al. (2011) Four mixtures of RAP 0%, 15%, 30% and 50%, was used with low penetration virgin bitumen. Evaluated moisture sensitivity (TSR) values was dropped with increasing RAP content but values were higher than 80%.</p> <br> <p><strong>Google Scholar :</strong> <a href="https://scholar.google.com/scholar?q=Evaluating+the+Impact+of+Moisture+on+the+Tensile+Strength+of+Recycled+Asphalt+Pavement+Mixtures%3A+An+Examination+of+Aging+Factors" target="_blank">https://scholar.google.com/scholar?q=Evaluating+the+Impact+of+Moisture+on+the+Tensile+Strength+of+Recycled+Asphalt+Pavement+Mixtures%3A+An+Examination+of+Aging+Factors</a></p> <p><strong>DOI :</strong> <a href="https://doi.org/10.5281/zenodo.19223049" target="_blank">https://doi.org/10.5281/zenodo.19223049</a></p> <div> <a href="https://doi.org/10.5281/zenodo.19223049" target="_blank">CITE PAPER</a> <a href="https://scholar.google.com/scholar?q=Evaluating+the+Impact+of+Moisture+on+the+Tensile+Strength+of+Recycled+Asphalt+Pavement+Mixtures%3A+An+Examination+of+Aging+Factors" target="_blank">Google Scholar</a> </div>