Influence of the Production Temperature on the Optimization Process of Asphalt Mixes Prepared with Steel Slag Aggregates Only

2019 ◽  
pp. 214-223
Author(s):  
Emiliano Pasquini ◽  
Giovanni Giacomello ◽  
Marta Skaf ◽  
Vanesa Ortega-Lopez ◽  
Juan Manuel Manso ◽  
...  
Keyword(s):  
Steel Slag ◽  
Optimization Process ◽  
Asphalt Mixes ◽  
Production Temperature

scholarly journals Characteristics of Warm Mix Asphalt Incorporating Coarse Steel Slag Aggregates

2021 ◽  
Vol 11 (8) ◽  
pp. 3708
Author(s):  
Adham Mohammed Alnadish ◽  
Mohamad Yusri Aman ◽  
Herda Yati Binti Katman ◽  
Mohd Rasdan Ibrahim
Keyword(s):  
Environmental Sustainability ◽  
Prediction Models ◽  
Hot Mix Asphalt ◽  
Steel Slag ◽  
Warm Mix Asphalt ◽  
Asphalt Mixes ◽  
Toxic Emissions ◽  
Comparable Performance ◽  
Different Temperatures ◽  
Production Temperature

The major goal of sustainable practices is to preserve raw resources through the utilization of waste materials as an alternative to natural resources. Decreasing the temperature required to produce asphalt mixes contributes to environmental sustainability by reducing energy consumption and toxic emissions. In this study, warm mix asphalt incorporating coarse steel slag aggregates was investigated. Warm mix asphalt was produced at different temperatures lower than the control asphalt mixes (hot mix asphalt) by 10, 20, and 30 °C. The performances of the control and warm mix asphalt were assessed through laboratory tests examining stiffness modulus, dynamic creep, and moisture sensitivity. Furthermore, a response surface methodology (RSM) was conducted by means of DESIGN EXPERT 11 to develop prediction models for the performance of warm mix asphalt. The findings of this study illustrate that producing warm mix asphalt at a temperature 10 °C lower than that of hot mix asphalt exhibited the best results, compared to the other mixes. Additionally, the warm mix asphalt produced at 30 °C lower than the hot mix asphalt exhibited comparable performance to the hot mix asphalt. However, as the production temperature increases, the performance of the warm mix asphalt improves.

scholarly journals Steel Slag as an Aggregate Replacement in Malaysian Hot Mix Asphalt

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Mohd Rosli Hainin ◽  
Nur Izzi Md. Yusoff ◽  
Mohd Fahmi Mohammad Sabri ◽  
Mohd Azizi Abdul Aziz ◽  
Mohd Anwar Sahul Hameed ◽  
...  
Keyword(s):  
Steel Industry ◽  
Resilient Modulus ◽  
Steel Slag ◽  
Road Construction ◽  
Design System ◽  
High Demand ◽  
Asphalt Mixes ◽  
Alternative Materials ◽  
Crushed Aggregate ◽  
Pavement Construction

As natural aggregate sources are becoming depleted due to high demand in road construction and the amount of disposed waste material keeps increasing, researchers are exploring the use of alternative materials which could preserve natural sources and save the environment. In this study, steel slag was used as an aggregate replacement in conventional dense graded asphalt mixes (ACW14 and ACB28). Steel slag was selected due to its characteristics, which are almost similar to conventional aggregates, and the fact that it is easily obtainable as a by-product of the steel industry. The same gradations of mixtures were produced using normal crushed aggregate as control samples. The Marshall mix design system was used for sample preparation in accordance with Malaysian specifications. Samples of asphaltic concrete were subjected to the resilient modulus test, creep test and rutting test. Samples made from steel slag show significantly better results than conventional aggregate. Therefore, utilization of steel slag will reduce land fill, save natural resources and improve the strength of pavement to sustain a higher volume of vehicles. This will shift the gear in sustainable pavement construction, which is most desirable in today’s energy deficient world.

Environmental Impacts of Asphalt Mixes with Electric Arc Furnace Steel Slag

2011 ◽  
Vol 40 (4) ◽  
pp. 1153-1161 ◽  
Author(s):  
Radmila Milačič ◽  
Tea Zuliani ◽  
Tina Oblak ◽  
Ana Mladenovič ◽  
Janez Šč ančar
Keyword(s):  
Environmental Impacts ◽  
Steel Slag ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Arc Furnace ◽  
Asphalt Mixes ◽  
Furnace Steel

scholarly journals Induction healing of asphalt mixes with steel slag

2018 ◽  
pp. 379-382 ◽  
Author(s):  
P. Apostolidis ◽  
X. Liu ◽  
H. Wang ◽  
M.F.C. van de Ven ◽  
A. Scarpas
Keyword(s):  
Steel Slag ◽  
Asphalt Mixes

Design of asphalt mixes with steel slag aggregates using the Bailey method of gradation selection

2021 ◽  
Vol 279 ◽  
pp. 122426
Author(s):  
Malluru Swathi ◽  
Thavamani Andiyappan ◽  
Gurunath Guduru ◽  
M. Amarnatha Reddy ◽  
Kranthi K. Kuna
Keyword(s):  
Steel Slag ◽  
Asphalt Mixes

scholarly journals Study on the Optimum Steel Slag Content of SMA-13 Asphalt Mixes Based on Road Performance

Coatings ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1436
Author(s):  
Wei Chen ◽  
Jincheng Wei ◽  
Xizhong Xu ◽  
Xiaomeng Zhang ◽  
Wenyang Han ◽  
...  
Keyword(s):  
Dynamic Modulus ◽  
Steel Slag ◽  
Temperature Stability ◽  
Shear Resistance ◽  
High Temperature Stability ◽  
Asphalt Mixes ◽  
Asphalt Mix ◽  
Wheel Tracking ◽  
Temperature Crack ◽  
Slag Content

To reduce the use of aggregates such as limestone and basalt, this paper used steel slag to replace some of the limestone aggregates in the production of SMA-13 asphalt mixes. The optimum content of steel slag in the SMA-13 asphalt mixes was investigated, and the performance of these mixes was evaluated. Five SMA-13 asphalt mixes with varying steel slag content (0%, 25%, 50%, 75%, and 100%) were designed and prepared experimentally. The high-temperature stability, low-temperature crack resistance, water stability, dynamic modulus, shear resistance, and volumetric stability of the mixes were investigated using the wheel tracking, Hamburg wheel tracking, three-point bending, freeze–thaw splitting, dynamic modulus, uniaxial penetration, and asphalt mix expansion tests. The results showed that compared to normal SMA-13 asphalt mixes, the high-temperature stability, water stability, and shear resistance of the SMA-13 asphalt mixes increased and then decreased as the steel slag content increased. All three performance indicators peaked at 75% steel slag content, and the dynamic stability, freeze–thaw splitting ratio, and uniaxial penetration strength increased by 90.48%, 7.39%, and 88.08%, respectively; however, the maximum bending tensile strain, which represents the low-temperature crack resistance of the asphalt mix, decreased by 5.98%. The dynamic modulus of the SMA-13 asphalt mixes increased with increasing steel slag content, but the volume expansion at a 75% steel slag content was 0.446% higher than at a 0% steel slag content. Based on the experimental results, the optimum content of steel slag for SMA-13 asphalt mixes was determined to be 75%.

scholarly journals Influence of the Long-Term Oven Aging on the Performance of the Reinforced Asphalt Mixtures

Coatings ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 953 ◽  
Author(s):  
Adham Mohammed Alnadish ◽  
Mohamad Yusri Aman ◽  
Herda Yati Binti Katman ◽  
Mohd Rasdan Ibrahim
Keyword(s):  
Resilient Modulus ◽  
Permanent Deformation ◽  
Steel Slag ◽  
Asphalt Mixtures ◽  
Elastic Behavior ◽  
Performance Tests ◽  
Asphalt Mixes ◽  
Synthetic Fibers ◽  
Aged Asphalt

The long-term aging of the asphalt mixtures has become a major concern because it decreases the lifespan of the asphalt layer. In this study, the asphalt mixtures incorporating steel slag aggregates were reinforced with synthetic fibers as a novel contribution in terms of decreasing the effect of aging on the performance of the asphalt mixtures. However, different mixtures—namely, Mix0, Mix1, and Mix2—were subjected to long-term oven aging to study the effect of the aging on the performance of the asphalt mixes. Mix0 consisted of coarse and fine granite aggregates, while Mix1 was composed of coarse steel slag aggregate and fine granite aggregate. Mix2 represents the reinforced asphalt mixtures incorporating coarse steel slag aggregate and reinforced with the synthetic fibers of polyvinyl alcohol, acrylic, and polyester at the proportion of 0.3% by weight of the aggregates. The conducted performance tests were resilient modulus, rutting depth, and cracking resistance. The outputs of the performance tests for the unaged asphalt mixes displayed that the mixtures incorporating coarse steel slag aggregate exhibited better performance than the mixtures containing granite aggregate. Meanwhile, the reinforced asphalt mixtures have shown a lower resilient modulus and a higher permanent deformation than the unreinforced asphalt mixes due to the elastic behavior. Otherwise, the reinforced asphalt mixtures have shown superior resistance to cracking in comparison to the unreinforced mixtures. On the other hand, the performance of the aged asphalt mixtures demonstrated that the mixtures containing granite aggregates exhibited a lower susceptibility to aging than the mixtures incorporating steel slag aggregate. Meanwhile, the performance of the aged reinforced asphalt mixtures showed that introducing synthetic fibers has decreased the effect of the long-term oven aging.

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