DEVELOPMENT OF A PREMIUM COLD MIX ASPHALT
Cold mix asphalt produced using conventional emulsion and limestone filler has three main disadvantages, namely low early strength due to high amount of water within the mix, long curing time ranging from 2-24 months and high air voids content. In this study, the effect of a novel technology for...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Faculty of Engineering, University of Kufa
2023-07-01
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| Series: | Mağallaẗ Al-kūfaẗ Al-handasiyyaẗ |
| Subjects: | |
| Online Access: | https://journal.uokufa.edu.iq/index.php/kje/article/view/10805 |
| _version_ | 1797637339108868096 |
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| author | Manar Hamzah Herez Hassan Al Nageim John Richardson Sommerville Wright |
| author_facet | Manar Hamzah Herez Hassan Al Nageim John Richardson Sommerville Wright |
| author_sort | Manar Hamzah Herez |
| collection | DOAJ |
| description | Cold mix asphalt produced using conventional emulsion and limestone filler has three main disadvantages, namely low early strength due to high amount of water within the mix, long curing time ranging from 2-24 months and high air voids content.
In this study, the effect of a novel technology for producing high-quality cold mix asphalt using modified bitumen emulsion has been investigated in terms of indirect tensile stiffness modulus. the effect of a novel technology for homogenizing a bitumen emulsion on its viscosity, particle size and particle size distribution has been investigated. Ultrasound technology has been used to reduce the viscosity and the size of the bitumen droplets. Different samples of cationic bitumen emulsion (C50B4) have been prepared with different treatment durations (0, 5, 7, 10, 12.5, 15, 30, 45 and 60) min. The results have shown a reduction in the viscosity of the bitumen emulsion at treatment times from 5-15 min. The viscosity has been decreased by 28% after 10 min treatment for the emulsion compared to the untreated sample. This reduction indicated a uniform droplet size distribution. In addition, the particle size measurements revealed that the 7 min treatment showed a significant reduction in the D50, which was 84.5%, D10, was 85.89%, and D90 was 90.28% compared to the untreated bitumen emulsion. The results reported contains a comparison between the viscosity of the emulsions, and the indirect tensile stiffness modulus of a control conventional cold mix asphalt and the new high quality cold mix asphalt with low viscosity. Interestingly, the reduction of the 28% in the viscosity of the new emulsion causes an improvement of the indirect tensile stiffness modulus to 216%, which indicates an outstanding achievement. |
| first_indexed | 2024-03-11T12:47:56Z |
| format | Article |
| id | doaj.art-a3816a4a4e53469783e8225e3d3f07de |
| institution | Directory Open Access Journal |
| issn | 2071-5528 2523-0018 |
| language | English |
| last_indexed | 2024-03-11T12:47:56Z |
| publishDate | 2023-07-01 |
| publisher | Faculty of Engineering, University of Kufa |
| record_format | Article |
| series | Mağallaẗ Al-kūfaẗ Al-handasiyyaẗ |
| spelling | doaj.art-a3816a4a4e53469783e8225e3d3f07de2023-11-04T14:33:37ZengFaculty of Engineering, University of KufaMağallaẗ Al-kūfaẗ Al-handasiyyaẗ2071-55282523-00182023-07-01143304710.30572/2018/KJE/140303DEVELOPMENT OF A PREMIUM COLD MIX ASPHALTManar Hamzah Herez0Hassan Al Nageim1John Richardson2Sommerville Wright3Department of Civil Engineering, Kufa University, IraqDept. of Structural Engineering, Head of the Liverpool, Centre for Materials Technology, Dept. of Civil Engineering, Liverpool John Moores University, UKHead of Technical Department, Colas Limited, Wallage Lane, Crawley, United KingdomAssociate Director, COLAS, UKCold mix asphalt produced using conventional emulsion and limestone filler has three main disadvantages, namely low early strength due to high amount of water within the mix, long curing time ranging from 2-24 months and high air voids content. In this study, the effect of a novel technology for producing high-quality cold mix asphalt using modified bitumen emulsion has been investigated in terms of indirect tensile stiffness modulus. the effect of a novel technology for homogenizing a bitumen emulsion on its viscosity, particle size and particle size distribution has been investigated. Ultrasound technology has been used to reduce the viscosity and the size of the bitumen droplets. Different samples of cationic bitumen emulsion (C50B4) have been prepared with different treatment durations (0, 5, 7, 10, 12.5, 15, 30, 45 and 60) min. The results have shown a reduction in the viscosity of the bitumen emulsion at treatment times from 5-15 min. The viscosity has been decreased by 28% after 10 min treatment for the emulsion compared to the untreated sample. This reduction indicated a uniform droplet size distribution. In addition, the particle size measurements revealed that the 7 min treatment showed a significant reduction in the D50, which was 84.5%, D10, was 85.89%, and D90 was 90.28% compared to the untreated bitumen emulsion. The results reported contains a comparison between the viscosity of the emulsions, and the indirect tensile stiffness modulus of a control conventional cold mix asphalt and the new high quality cold mix asphalt with low viscosity. Interestingly, the reduction of the 28% in the viscosity of the new emulsion causes an improvement of the indirect tensile stiffness modulus to 216%, which indicates an outstanding achievement.https://journal.uokufa.edu.iq/index.php/kje/article/view/10805ultrasound technologybitumen emulsionviscosityindirect tensile stiffness modulusclod mix asphalt |
| spellingShingle | Manar Hamzah Herez Hassan Al Nageim John Richardson Sommerville Wright DEVELOPMENT OF A PREMIUM COLD MIX ASPHALT Mağallaẗ Al-kūfaẗ Al-handasiyyaẗ ultrasound technology bitumen emulsion viscosity indirect tensile stiffness modulus clod mix asphalt |
| title | DEVELOPMENT OF A PREMIUM COLD MIX ASPHALT |
| title_full | DEVELOPMENT OF A PREMIUM COLD MIX ASPHALT |
| title_fullStr | DEVELOPMENT OF A PREMIUM COLD MIX ASPHALT |
| title_full_unstemmed | DEVELOPMENT OF A PREMIUM COLD MIX ASPHALT |
| title_short | DEVELOPMENT OF A PREMIUM COLD MIX ASPHALT |
| title_sort | development of a premium cold mix asphalt |
| topic | ultrasound technology bitumen emulsion viscosity indirect tensile stiffness modulus clod mix asphalt |
| url | https://journal.uokufa.edu.iq/index.php/kje/article/view/10805 |
| work_keys_str_mv | AT manarhamzahherez developmentofapremiumcoldmixasphalt AT hassanalnageim developmentofapremiumcoldmixasphalt AT johnrichardson developmentofapremiumcoldmixasphalt AT sommervillewright developmentofapremiumcoldmixasphalt |