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Perviz Ahmedzade - One of the best experts on this subject based on the ideXlab platform.
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Evaluation of Bitumen physical properties modified with waste plastic pipes
Canadian Journal of Civil Engineering, 2018Co-Authors: Sevil Köfteci, Perviz Ahmedzade, Taylan GünayAbstract:The aim of this paper is to examine the effects of ground plastic pipe wastes on Bitumen. For this purpose, three modified Bitumen samples with modifier contents of 2%, 4%, and 6% along with Pure Bitumen were prepared and tested. To understand the effect of modifier on Bitumen, conventional Bitumen tests, rotational viscosity tests at 135 °C and 165 °C, dynamic shear rheometer tests at three different frequencies that represent three different traffic speeds, and bending beam rheometer (BBR) test were performed. The BBR test results showed that resistance of Pure Bitumen to low-temperature cracking increased by using additives up to 4%. Based on the results of this study, it can be said that waste plastic pipes can be used as modifier for the Bitumen binder. The 4% additive showed the best performance.
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The investigation and comparison effects of SBS and SBS with new reactive terpolymer on the rheological properties of Bitumen
Construction and Building Materials, 2013Co-Authors: Perviz AhmedzadeAbstract:Abstract The effects of styrene–butadiene–styrene (SBS) and SBS with new reactive terpolymer (Entira®Bond 8) modifications on the rheological properties of Pure Bitumen were investigated and compared to each other. Four polymer modified Bitumens (PMBs) were produced by mixing Bitumen with SBS at two polymer contents and with SBS + Entira®Bond 8 at the same polymer contents. The rheologic characteristics of the PMBs were analyzed by means of conventional test methods like penetration, softening point and Fraas breaking point as well as rotational viscometer (RV), dynamic shear rheometer (DSR) and bending beam rheometer (BBR) test methods. Conventional binder properties of different PMB groups demonstrated that the polymers increase stiffness (hardness) and improve susceptibility of Pure Bitumen to temperature changes. Both polymers groups improve properties of Bitumen, such as increased elastic responses (increased complex shear modulus and decreased phase angle) at low to high temperatures and reduced creep stiffness at low temperatures. Based on the results of this investigation it can be noted that SBS + Entira®Bond 8 modifications improved the conventional and more fundamental properties of Bitumen better than just SBS modifications.
Abdel-goad, Mahmoud Abdel-halim - One of the best experts on this subject based on the ideXlab platform.
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Rheological Characteristics of Waste Polyvinyl Chloride-Bitumen Composites: Part II
2018Co-Authors: Abdel-goad, Mahmoud Abdel-halim, Ijeais IjarwAbstract:Abstract— Waste Polyvinyl chloride-Bitumen composites were prepared in the molten state by addition waste PVC pipes to commercial Bitumen in different concentrations. The original material of the Pure Bitumen and Bitumen composites are rheologically characterized. The viscoelastic properties such as shear compliance, torque and viscosity were measured and compared. These properties were studied using an ARES- Rheometer (Rheometric Scientific, Co.) equipment. The measurements were performed in the dynamic mode, plate-plate geometry of 25 mm diameter over the temperature range from –10 to 60°C and angular frequency, varied from 102 to10-1 radian/s. The results are compared at reference temperatures10 and 60°C over a wide range of . The results evidence that the incorporation of the waste PVC into Bitumen enhances the dynamic mechanical moduli and the viscosity. The moduli were found to rise with increasing the waste PVC content. The stability of the Bitumen blends is more noticeable at 60°C as confirmed by the results
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Rheological Characteristics of Waste Polyvinyl Chloride-Bitumen Composites: Part III
2018Co-Authors: Abdel-goad, Mahmoud Abdel-halim, Ijeais IjarwAbstract:Abstract— Waste Polyvinyl chloride-Bitumen composites were prepared in the molten state by addition waste PVC pipes to commercial Bitumen in different concentrations. The original material of the Pure Bitumen and Bitumen composites are rheologically characterized. The viscoelastic properties such as shear compliance, torque and viscosity were measured and compared. These properties were studied using an ARES- Rheometer (Rheometric Scientific, Co.) equipment. The measurements were performed in the dynamic mode, plate-plate geometry of 25 mm diameter over the temperature range from –10 to 60°C and angular frequency, varied from 102 to10-1 radian/s. The results are compared at reference temperatures10 and 60°C over a wide range of . The results evidence that the incorporation of the waste PVC into Bitumen enhances the dynamic viscosity. The results evidence that the incorporation of the waste PVC into Bitumen enhances the torque and the viscosity. So, the stability of the Bitumen composites is more noticeable at 60°C
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Rheological Rheological Characterization of Bitumen/Waste Polyethylene Composites: Part II
2018Co-Authors: Abdel-goad, Mahmoud Abdel-halimAbstract:Bitumen blends were prepared for road applications by the introduction of 9wt% waste Polyethylene, PE bags in the molten state. The relaxation stress, relaxation and retardation spectrum and viscosity of Bitumen blends were studied. At different temperatures and compared to those of the original Pure Bitumen. These properties were tested using an ARES- Rheometer (Rheometric Scientific, Co.) equipment. The measurements were performed in the dynamic mode, plate-plate geometry of 8 mm diameter over the temperature range from –10 to 60°C and angular frequency, varied from 10-1 to 102 radian/s. The relaxation stress and viscosity were modified by the addition of waste PE. The results also evidence that the incorporation of the waste PE enhances stability of the Bitumen blends As a consequence, the use of waste PE bags can be considered a suitable alternative from both environmental and economical points of view. Bitumens containing several polymer concentrations have been studied
Ijeais Ijarw - One of the best experts on this subject based on the ideXlab platform.
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Rheological Characteristics of Waste Polyvinyl Chloride-Bitumen Composites: Part II
2018Co-Authors: Abdel-goad, Mahmoud Abdel-halim, Ijeais IjarwAbstract:Abstract— Waste Polyvinyl chloride-Bitumen composites were prepared in the molten state by addition waste PVC pipes to commercial Bitumen in different concentrations. The original material of the Pure Bitumen and Bitumen composites are rheologically characterized. The viscoelastic properties such as shear compliance, torque and viscosity were measured and compared. These properties were studied using an ARES- Rheometer (Rheometric Scientific, Co.) equipment. The measurements were performed in the dynamic mode, plate-plate geometry of 25 mm diameter over the temperature range from –10 to 60°C and angular frequency, varied from 102 to10-1 radian/s. The results are compared at reference temperatures10 and 60°C over a wide range of . The results evidence that the incorporation of the waste PVC into Bitumen enhances the dynamic mechanical moduli and the viscosity. The moduli were found to rise with increasing the waste PVC content. The stability of the Bitumen blends is more noticeable at 60°C as confirmed by the results
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Rheological Characteristics of Waste Polyvinyl Chloride-Bitumen Composites: Part III
2018Co-Authors: Abdel-goad, Mahmoud Abdel-halim, Ijeais IjarwAbstract:Abstract— Waste Polyvinyl chloride-Bitumen composites were prepared in the molten state by addition waste PVC pipes to commercial Bitumen in different concentrations. The original material of the Pure Bitumen and Bitumen composites are rheologically characterized. The viscoelastic properties such as shear compliance, torque and viscosity were measured and compared. These properties were studied using an ARES- Rheometer (Rheometric Scientific, Co.) equipment. The measurements were performed in the dynamic mode, plate-plate geometry of 25 mm diameter over the temperature range from –10 to 60°C and angular frequency, varied from 102 to10-1 radian/s. The results are compared at reference temperatures10 and 60°C over a wide range of . The results evidence that the incorporation of the waste PVC into Bitumen enhances the dynamic viscosity. The results evidence that the incorporation of the waste PVC into Bitumen enhances the torque and the viscosity. So, the stability of the Bitumen composites is more noticeable at 60°C
G D Airey - One of the best experts on this subject based on the ideXlab platform.
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Materials and Infrastructures 1 - Experimental Study of Binder–Filler Interaction Using the Modified Multiple Stress–Strain Creep Recovery Test
Materials and Infrastructures 1, 2016Co-Authors: Mahmoud Masoud Hamza Elnasri, Nick Thom, G D AireyAbstract:Rutting has the potential to lead to hazardous driving conditions and is a concern for the asphalt community. Asphalt mixture behaviour is significantly governed by the properties of the used Bitumen. Because of the increasing demand for better performance, current studies have tended to focus on developing rheological binder tests that can be used to accurately predict asphalt performance especially for modified binders. In addition, there is an essential requirement to consider the interactions between components in an asphalt mixture. This paper presents a new procedure to characterise the creep and recovery properties of Pure Bitumen and mastics using a modified multiple stress-strain creep recovery test. To understand the authentic mechanism of rutting resistance, two new factors comprising ltime factorr and lnormalised recoveryr are introduced. The results indicate that creep and recovery are functions of filler concentration, stress level, strain level and temperature.
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experimental study of binder filler interaction using the modified multiple stress strain creep recovery test
Transport Research Arena (TRA) 5th Conference: Transport Solutions from Research to DeploymentEuropean CommissionConference of European Directors of R, 2014Co-Authors: Mahmoud Masoud Hamza Elnasri, N H Thom, G D AireyAbstract:Rutting has the potential to lead to hazardous driving conditions and is a concern for the asphalt community. Asphalt mixture behaviour is significantly governed by the properties of the used Bitumen. Because of the increasing demand for better performance, current studies have tended to focus on developing rheological binder tests that can be used to accurately predict asphalt performance especially for modified binders. In addition, there is an essential requirement to consider the interactions between components in an asphalt mixture. This paper presents a new procedure to characterise the creep and recovery properties of Pure Bitumen and mastics using a modified multiple stress-strain creep recovery test. To understand the authentic mechanism of rutting resistance, two new factors comprising ltime factorr and lnormalised recoveryr are introduced. The results indicate that creep and recovery are functions of filler concentration, stress level, strain level and temperature.
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Experimental Investigation of Bitumen and Mastics under Shear Creep and Creep-Recovery Testing
Airfield and Highway Pavement 2013, 2013Co-Authors: Mahmoud Masoud Hamza Elnasri, G D Airey, Nick ThomAbstract:This paper characterises binder and mastic behaviour under shear creep and creeprecovery tests. Although several researchers have investigated the creep and recovery behaviour of Pure and polymer modified Bitumen, there is a primary need to investigate the behaviour of mastic in such a way to better correlate with the behaviour of asphalt mixtures. The steady state condition under creep testing and recovery behaviour under creep recovery testing are characterised through testing in the dynamic shear rheometer (DSR) under a wide range of stresses and temperatures. 40/60 pen Pure Bitumen as well as binder-filler mastics containing limestone blended at three different concentrations [35%, 50%, and 65% by mass of mastic] were utilised for this study. Creep testing results indicated that Pure Bitumen and mastics behave linearly at low stress levels and nonlinearly at high stress levels. In addition, the stiffening effect of filler is characterised through a new Stiffing Factor. Stiffening Factor was determined for each Bitumen-mastic combination obtained under similar testing conditions based on a steady-state curve fitting technique. Results analysis of creeprecovery tests showed that the recovery property of the Bitumen is affected by both stress limit and filler concentration but insignificantly influenced by temperature. Moreover, the recovery property of bituminous material reduces with increasing filler content.
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Fatigue Behaviour of Bitumen-Filler Mastics
2006Co-Authors: G D Airey, M-c. Liao, N H ThomAbstract:Fatigue cracking can be considered to be the main failure mechanism that occurs at ambient temperatures in an asphalt pavement. Although it is recognised that fatigue damage is mainly caused by cracking or damage within the bituminous binder and/or Bitumen-filler mastic, fatigue testing has generally been limited to the bituminous (asphalt) mixture. Since the introduction of the dynamic shear rheometer (DSR), direct testing of bituminous binders in fatigue has become relatively common with a number of research groups having successfully generated fatigue characteristics for both Pure and modified Bitumens. However, it can be argued that fatigue of Bitumen-filler mastics rather than Pure Bitumen may be more appropriate to establish fatigue correlations with asphalt mixtures. Fatigue tests have therefore been carried out on binder-filler mastics (35 and 65% filler mass with limestone, gritstone and cement filler) to investigate the effect of filler content as well as mineral type on mastic fatigue. The results show that the fatigue performance of mastics is significantly affected by filler concentration but not by filler type. In addition, there does not appear to be a definitive stress or strain dependency (criterion) for Pure Bitumen or Bitumen-filler mastics.
A A A Molenaar - One of the best experts on this subject based on the ideXlab platform.
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Investigating self healing behaviour of Pure Bitumen using Dynamic Shear Rheometer
Fuel, 2011Co-Authors: Jian Qiu, M.f.c. Van De Ven, A A A MolenaarAbstract:Abstract Self healing is known as a built-in property of Bitumen, which can help Bitumen and asphalt concrete to recover its strength after damage. Healing can also extend the service life of asphalt pavements. A two-piece healing (TPH) test was developed to investigate the self healing behaviour of Pure Bitumen using the Dynamic Shear Rheometer (DSR). During the TPH test, a healing process was directly simulated by pressing the two pieces of Bitumen together under a parallel-plate system. Two phases can be distinguished from the TPH healing test, the initial healing phase due to gap closure, and the time dependent healing phase. The results are summarised as following. (1) Initial healing phase: The initial healing phase has a three-stage complex modulus increase with the closure of the gap thickness. A rapid increase of the complex modulus is observed in the second stage of the initial healing curve due to a 0.5 mm gap reduction. (2) Time dependent healing phase: The time dependent healing results show a distinctive difference between the gap constant control mode and the normal force constant control mode. The normal force control healing can be decomposed into the time dependent healing during a gap constant mode and additional healing by compression. It was indicated that the compressive normal force strongly promotes healing development. (3) It was also demonstrated that many factors can influence the complex modulus measurement results by using the DSR parallel-plate geometry.
