Performance of a hot asphalt mixture by reducing the compaction temperature

2021 ◽  
Author(s):  
Juan G Bastidas-Martinez ◽  
Camila Jaramillo Monroy ◽  
Eduardo J Rueda ◽  
Juan C Ruge ◽  
Diego M Polaina Andrade
Keyword(s):  
Asphalt Mixture ◽  
Compaction Temperature

scholarly journals Assessment Mixing and Compaction Temperatures for Modified HMA Using Superpave High Shear Viscosity Methods

2018 ◽  
Vol 21 (4) ◽  
pp. 516-522 ◽  
Author(s):  
Alaa Hussein Abed ◽  
Ali Hwaidi Nasser
Keyword(s):  
Shear Viscosity ◽  
Asphalt Mixture ◽  
High Shear ◽  
Compaction Temperature ◽  
Modified Asphalt ◽  
Performance Grade ◽  
Modified Binders ◽  
Different Temperatures ◽  
Marshall Stability

The objective of this study is determining the mixing and compaction temperature of the modified asphalt mixture. Results of binder tests showed that the addition of 3% SBS  to control asphalt (PG 64-16) would achieve the desired performance level (PG 76-16) a performance grade that fits our climate with traffic loads. When using 5% SBS the performance grade of binder increased three grades (PG 82-16) and when increasing SBS content to 8% the performance grade increased four grades (PG 88-16). At shear rate of 500 (s-1), the modified asphalt viscosity can be obtained at different temperatures and the viscosity temperature curve can be achieved. As a result, the mixing and compaction temperature of modified asphalt can be determined to reach 0.17 ± 0.02 Pa.s and 0.28 ± 0.03 Pa.s for mixing and compaction, respectively. It is noted that SBS modified reached a viscosity of 3 Pa.s when 8 % additive. Additive contents above these values may not be suitable for good workability and pump ability according to Superpave specifications. While addition of 5% SBS with control asphalt, more than 3.7times at 135°C Increase the viscosity. Marshall Stability test indicated that the strength for the SBS specimens increases as compared to the conventional specimens. An increase of about 39%, 74%, 102%, was observed with 3%SBS 5%SBS 8%SBS modified binders, respectively. The Marshall test results for 8%SBS binders required compaction temperatures above 175°C need to keep up quality of HMA item while limiting natural effect amid development, these proposals are unsatisfactory Modified mixtures the 5% SBS modification was determined to be the maximum useful content. The Superpave method to estimate mixing and compaction temperatures show are not practical for use with modified binders. Also,  it is observed that good agreement values between the average Marshall compaction temperature and the High Shear Viscosity Method (HSRV) and   lower than Superpave methods Where the decline ranges from 15 ºC to 17 ºC.

scholarly journals Determination of Construction Parameters of Porous Ultra-Thin Overlays Based on Laboratory Compaction Studies

Materials ◽  
2020 ◽  
Vol 13 (20) ◽  
pp. 4496
Author(s):  
Jiahao Tian ◽  
Sang Luo ◽  
Ziming Liu ◽  
Xu Yang ◽  
Qing Lu
Keyword(s):  
Asphalt Concrete ◽  
Asphalt Mixture ◽  
Asphalt Mixtures ◽  
Combination Method ◽  
Compaction Temperature ◽  
Pavement Maintenance ◽  
Energy Equivalence ◽  
New Type ◽  
Better Than

To address the severe distresses of asphalt pavement, a new type of pavement maintenance treatment, porous ultra-thin overlay (PUTO) with small particle size was proposed. The PUTO has a thickness of 1.5–2.5 cm and a large void ratio of 18–25%. As a newly asphalt mixture, the structure characteristics differ from poor traditional pavement. Therefore, it is necessary to investigate the fabrication schemes in laboratory and on-site, respectively. In this study, the optimal fabrication schemes, including compaction temperature and number of blows of PUTO were determined based on Cantabro test and volumetric parameters. Then, the corresponding relationship between laboratory and on-site compaction work was then established based on the energy equivalent principle. On this basis, the numbers of on-site rolling passes and the combination method were calculated. The results show that increased compaction temperature and number of blows reduce the height and enhance the compaction of the Marshall sample. With the same temperature and number of blows, the raveling resistance of coarse gradation, Pavement Asphalt Concrete-1 (PAC-1) is better than that of fine gradation, Pavement Asphalt Concrete-2 (PAC-2), and the increased asphalt viscosity significantly improves the raveling resistance of the asphalt mixture. To ensure the scattering resistance and volumetric characteristic, the initial compaction temperature of the PAC-1 and PAC-2 should not be lower than 150 °C and 165 °C, respectively. Then, the laboratory compaction work and on-site compaction work were calculated and converted based on the principle of energy equivalence. Consequently, the on-site compaction combination of rolling machines for four asphalt mixtures was determined. According to the volumetric parameters, the paving test section proved that the construction temperature and the on-site rolling combination determined by laboratory tests are reasonable, and ultra-thin overlay has good structural stability, drainage, and skid resistance.

scholarly journals Determination of Construction Parameters of Porous Ultra-Thin Overlays Based on Laboratory Compaction Studies

2020 ◽  
Author(s):  
Jiahao Tian ◽  
Sang Luo ◽  
Ziming Liu ◽  
Xu Yang ◽  
Qing Lu
Keyword(s):  
Void Ratio ◽  
Asphalt Mixture ◽  
Asphalt Mixtures ◽  
Combination Method ◽  
Compaction Temperature ◽  
Pavement Maintenance ◽  
Energy Equivalence ◽  
New Type ◽  
Better Than

To address the severe distresses of asphalt pavement, a new type of pavement maintenance treatment, porous ultra-thin overlay (PUTO) with small particle size was proposed. The PUTO has a thickness of 1.5~2.5 cm and a large void ratio of 18~25%. As a newly asphalt mixture, the structure characteristics differ from traditional pavement. Therefore, it is necessary to investigated the fabrication schemes in laboratory and on-site, respectively. In this study, the optimal fabrication schemes, including compaction temperature and number of blows of PUTO were determined based on Cantabro test and volumetric parameters. Then, the corresponding relationship between laboratory and on-site compaction work was then established based on the energy equivalent principle. On this basis, the numbers of on-site rolling passes and the combination method were calculated. The results show that increased compaction temperature and number of blows reduce the height and enhance the compactness of the Marshall sample. With the same temperature and number of blows, the scattering resistance of coarse gradation (PAC-1) is better than that of fine gradation (PAC-2), and the increased asphalt viscosity significantly improves the scattering resistance of the asphalt mixture. To ensure the scattering resistance and volumetric characteristic, the initial compaction temperature of the PAC-1 and PAC-2 should not be lower than 150 °C and 165 °C, respectively. Then, the laboratory compaction work and on-site compaction work were calculated and converted based on the principle of energy equivalence. Consequently, the on-site compaction combination of rolling machines for four asphalt mixtures was determined. According to the volumetric parameters, the paving test section proved that the construction temperature and the on-site rolling combination determined by laboratory tests are reasonable, and ultra-thin overlay has good structural stability, drainage and skid resistance.

scholarly journals Influence of compaction temperature on the properties of Marshall specimens

2015 ◽  
Vol 10 (4) ◽  
pp. 309-315 ◽  
Author(s):  
Ivica Androjić ◽  
Sanja Dimter
Keyword(s):  
Mechanical Properties ◽  
Structural Design ◽  
Hot Mix Asphalt ◽  
Asphalt Mixture ◽  
Maximum Density ◽  
Asphalt Mixtures ◽  
Test Results ◽  
Compaction Temperature ◽  
Asphalt Mix ◽  
Very High

Compaction of hot mix asphalt is influenced by several factors; some related to the environment, some determined by mix and structural design and some by contractor during construction. The temperature of asphalt mixture has the biggest influence on the compaction of asphalt mixtures and their properties. The temperature of asphalt mixture affects viscosity of bitumen and achievement of the maximum density of asphalt mixture. This paper describes a laboratory study on the effects of different installation temperatures on the physico-mechanical properties of specimens of asphalt mixtures: stability, Marshall Quotient (stiffness), density, voids and voids filled with asphalt. By regression analysis of the test results the correlation of certain properties of asphalt mix and compaction temperatures was established. For all the models observed, the coefficients of determination are very high and indicate very solid links. The obtained research results indicate a pronounced effect of compaction temperature on each tested property of asphalt mix.

Study on Water Stability of Warm Mix Drainage Asphalt with Sasobit

2013 ◽  
Vol 798-799 ◽  
pp. 178-181
Author(s):  
Jing Ya Chen ◽  
Kun Wang
Keyword(s):  
Polyester Fibre ◽  
Asphalt Mixture ◽  
Hydrated Lime ◽  
Water Stability ◽  
Test Results ◽  
Compaction Temperature ◽  
Porous Asphalt ◽  
Quick Lime ◽  
Stability Performance ◽  
Stability Order

To study water stability of Sasobit warm mix drainage asphalt (WMDA) and improve it, OGFC-13 WMA is primarily prepared with polyester fibre and Sasobit. According to the test results of specimens, formed at 5 different compaction temperatures by marshall tests, the optimal compaction temperature is determined. Then, general water stability tests were used to test the water stability performance of 4 kinds of asphalt mixtures, which were porous asphalt mixture of hot mix (OGFC-1),Sasobit WMDA without any anti-stripping agents (OGFC-2), Sasobit WMDA added hydrate lime (OGFC-3) and Sasobit WMDA added hydrated lime with quick lime (OGFC-4).Test results show that optimal compaction temperature is 150°C; water stability order (OGFC-3>OGFC-1>OGFC-2>OGFC-4) shows that using hydrated lime has beneficial yet limited effects to it. Hydrated lime with quick lime should be avoided for its adverse effect.1.5% hydrated lime shows best water stability.

Determining Method for Mixing and Compaction Temperature of Modified Asphalt Mixture

2017 ◽  
Vol 744 ◽  
pp. 83-86
Author(s):  
Xiao Hu Wu ◽  
Miao Miao Tian ◽  
Jin Yan
Keyword(s):  
Shear Rate ◽  
Asphalt Mixture ◽  
Test Results ◽  
Determination Method ◽  
Compaction Temperature ◽  
Modified Asphalt ◽  
Specific Temperature ◽  
The Difference ◽  
Relationship Of ◽  
The Relationship

According to the relationship of the viscosity and temperature when the mixture reached Optimum compaction effect and the shear rate, the viscosity shear rate of the testing modified asphalt mixture, 60s-1 has been found. The test results show that the difference between the compaction temperature of the modified asphalt mixture and the compaction temperature under the condition of the best compaction effect is 5°C. It shows that the temperature is satisfied with the specific temperature during construction, so the determination method is workable.

The Effect of Different Warm Additives on Performance Properties of HMA

2012 ◽  
Vol 178-181 ◽  
pp. 1369-1372 ◽  
Author(s):  
Shao Wen Du ◽  
Shan Shan Li
Keyword(s):  
Low Temperature ◽  
Asphalt Mixture ◽  
Moisture Resistance ◽  
Cracking Resistance ◽  
Rutting Resistance ◽  
Performance Properties ◽  
Compaction Temperature ◽  
Low Temperature Cracking ◽  
Negative Effect ◽  
Warm Additives

The effect of three types of warm additives, including Sasobit, Aspha-min and Evotherm DAT, on the compaction temperature, rutting resistance, low temperature resistance and moisture resistance of hot asphalt mixture (HMA) were evaluated by laboratory test. The test results show that Sasobit, Aspha-min and Evotherm DAT can reduce the compaction temperature of HMA by 27°C, 20°C and 30°C respectively. These warm additives all can improve obviously the rutting resistance of HMA. However, Evotherm DAT can increase low temperature cracking resistance ability of HMA. Aspha-min has obviously negative effect on the low temperature cracking resistance and moisture resistance of HMA. Therefore, it is necessary to investigate performance properties of HMA when selecting warm additives.

scholarly journals Warm Mix Asphalt Additive in Natural Rubber Modified Bitumen

2019 ◽  
Vol 266 ◽  
pp. 04005 ◽  
Author(s):  
Mazlina Mustafa Kamal ◽  
Kamarul Arifin Hadithon ◽  
Rohani Abu Bakar
Keyword(s):  
Natural Rubber ◽  
Energy Savings ◽  
Asphalt Mixture ◽  
Mechanical Analysis ◽  
Warm Mix Asphalt ◽  
Modified Bitumen ◽  
Rotational Viscometer ◽  
Compaction Temperature ◽  
Complex Shear ◽  
Reduction Of Emissions

The growing concern over the reduction of emissions and energy savings has led to the development of new paving technologies that are environmentally friendly. As a result, a warm mix asphalt technologies have been introduced to reduce the mixing and compaction temperature for asphalt mixture. The influence of additive with variation loading on the performance of Natural Rubber Modified Bitumen was acquired. In this work, Brookfield rotational viscometer test and Dynamic Shear Rheometer (DSR) mechanical analysis method and typical bitumen tests were employed. Results indicated that viscosity and the penetration of the Natural Rubber Modified Bitumen decreased, while the softening point increased with addition of additive. This in return would possible to reduce mixing and compaction temperature of the Natural Rubber Modified Mixture. Findings of the study also showed that the additive resulted in increase in complex shear modulus value and the rutting parameter modulus.

Challenges Associated with Optimisation of Blending, Mixing and Compaction Temperature for Asphalt Mixture Modified with Crumb Rubber Modifier (CRM)

2012 ◽  
Vol 256-259 ◽  
pp. 1837-1844 ◽  
Author(s):  
Iman Mohammadi ◽  
Hadi Khabbaz
Keyword(s):  
Asphalt Mixture ◽  
Crumb Rubber ◽  
Test Methods ◽  
Asphalt Binders ◽  
Asphalt Pavements ◽  
Compaction Temperature ◽  
Modified Asphalt ◽  
Wide Range ◽  
Modified Binder ◽  
Very High

The use of modified asphalt binders has become much more common over the past two decades. Many types of modifier have been used in paving asphalts to enhance the performance of asphalt pavements in a wide range of climates and loading conditions. Among various asphalts binder modifiers, the recycled crumb rubber has been used very successfully for many years. Generally in production of CRM binder, mixing and compaction temperature is determined by measuring of binder viscosity. The ordinary method used for viscosity measurement of unmodified binder leads to a very high Mixing and Compaction Temperature (MCT) for CRM binder. The aims of this paper are to identify, develop and give some recommendations on a reliable laboratory approach for blending of CRM with binder, as well as introducing appropriate laboratory test methods for optimisation of MCT of crumb rubber modified binder asphalt.

scholarly journals Compacting Properties of Zeolite Based Warm Asphalt Mixture

2012 ◽  
Vol 5 ◽  
pp. 299-304
Author(s):  
Li Ying Yang ◽  
Yi Qiu Tan
Keyword(s):  
Physical Properties ◽  
Water Content ◽  
Asphalt Mixture ◽  
Synthetic Zeolite ◽  
Natural Zeolites ◽  
Compaction Temperature ◽  
The World ◽  
Warm Mix Additives ◽  
Gyratory Compaction ◽  
Main Factors

Warm asphalt mixture develops rapidly throughout the world in recent years. Zeolite based warm mix is one of the warm mixtures. In this paper, seven kinds of zeolites including six natural zeolites and one synthetic zeolite are selected. As warm mix additives, their physical properties such as density, water content and pore arrangements are tested respectively. To evaluate the compacting properties of zeolites based warm asphalt mixture, AC-20 mixture is designed and compaction is conducted. It shows that zeolites can reduce the compacting temperature for both Marshall and gyratory compaction. Temperature is the main factors which influence the compaction effect. Type of zeolite affects compaction to some extent. Marshall compaction is more sensitive to zeolite than gyratory compaction.

Sign in / Sign up

Export Citation Format

Share Document