scholarly journals THE IMPROVEMENT OF BITUMEN APPLICATION PROPERTY BY INTRODUCING MODIFYING ADDITIVES OF NATURAL ORIGIN

2016 ◽  
Vol 16 (4) ◽  
pp. 33-38
Author(s):  
P Grehov ◽  
◽  
S Zavodov
Keyword(s):  
Asphalt Concrete ◽  
Asphalt Mixture ◽  
Concrete Technology ◽  
Mineral Supplement ◽  
Natural Origin ◽  
Modifying Additives ◽  
Mineral Material ◽  
Asphalt Mix ◽  
To Receive ◽  
Application Property

The possibility of the introduction of the flask in asphalt concrete as a mineral supplement. The results of studies of the flask’s effect on the bitumen adhesion to the mineral material in the asphalt mixture. The results allow to receive the asphalt mix with a higher index of bitumen adhesion to the mineral material. Shows the production of asphalt concrete technology with the introduction of the flask as a mineral supplement.

The Effectiveness of Using RAA-TA Additives for the Preparation of Warm Asphalt Concrete

2017 ◽  
Vol 865 ◽  
pp. 259-262 ◽  
Author(s):  
Valentina V. Yadykina ◽  
Anatoly M. Gridchin ◽  
Anna Trautvain ◽  
Vladimir Kholopov
Keyword(s):  
Asphalt Concrete ◽  
Water Saturation ◽  
Asphalt Mixture ◽  
Road Construction ◽  
State Standards ◽  
Adhesive Properties ◽  
Preparation Temperature ◽  
Asphalt Mix ◽  
Positive Effect ◽  
Physical And Mechanical Characteristics

The possibility to reduce the temperature during manufacturing and the temperature of compaction of asphalt mix by introducing the specially designed RAA-TA (Road Adhesive Additive for the warm asphalt concrete) additive to the bitumen has been demonstrated. Reducing the preparation temperature for asphalt mixture to 130 ° C, and the compaction temperature of the hot mix to 100 ° C, by using the additives, the characteristics of warm asphalt concrete meet the requirements of State Standards for hot asphalt concrete. The results indicate that the administration of additives improves strength at 20 and 50 ° C and reduces this index at 0 ° C, and with increasing the concentration of the researched additive its positive effect increases. The greatest effect of the additive is observed on such parameters as water saturation and water resistance of asphalt concrete, which is obviously connected with the improved encapsulation of mineral materials by bitumen due to the reduction of its viscosity and improvement of adhesive properties due to the additive composition. This will reduce the fuel consumption, the emissions of harmful substances into the atmosphere during the bituminous mixture production and asphalt coating making, as well as increase the distance of its transportation to the work site. At the same time the physical and mechanical characteristics of asphalt concrete with the addition of RAA-TA do not deteriorate. As a result of reducing the temperature of laying and compacting of asphalt mix the season of road construction can be extended and the pressure on the environment can be significantly reduced.

Image processing procedure to quantify the internal structure of porous asphalt concrete

2019 ◽  
Vol 15 (1) ◽  
pp. 206-226 ◽  
Author(s):  
Kabiru Abdullahi Ahmad ◽  
Norhidayah Abdul Hassan ◽  
Mohd Ezree Abdullah ◽  
Munder A.M. Bilema ◽  
Nura Usman ◽  
...  
Keyword(s):  
Internal Structure ◽  
Asphalt Concrete ◽  
Functional Performance ◽  
Resilient Modulus ◽  
Asphalt Mixture ◽  
Content Type ◽  
Porous Asphalt ◽  
X Ray ◽  
Air Void ◽  
Aggregate Interlock

Purpose In order to fully understand the properties of porous asphalt, investigation should be conducted from different point of views. This is from the fact that porous asphalt mixture designed with the same aggregate gradation and air void content can give different infiltration rate due to the different formation of the internal structure. Therefore, the purpose of this paper is to investigate the micro-structural properties and functional performance of porous asphalt simultaneously. Design/methodology/approach The aim is to develop imaging techniques to process and analyze the internal structure of porous asphalt mixture. A few parameters were established to analyze the air void properties and aggregate interlock within the gyratory compacted samples captured using a non-destructive scanning technique of X-ray computed tomography (CT) throughout the samples. The results were then compared with the functional performance in terms of permeability. Four aggregate gradations used in different countries, i.e. Malaysia, Australia, the USA and Singapore. The samples were tested for resilient modulus and permeability. Quantitative analysis of the microstructure was used to establish the relationships between the air void properties and aggregate interlock and the resilient modulus and permeability. Findings Based on the results, it was found that the micro-structural properties investigated have successfully described the internal structure formation and they reflect the results of resilient modulus and permeability. In addition, the imaging technique which includes the image processing and image analysis for internal structure quantification seems to be very useful and perform well with the X-ray CT images based on the reliable results obtained from the analysis. Research limitations/implications In this study, attention was limited to the study of internal structure of porous asphalt samples prepared in the laboratory using X-ray CT but can also be used to assess the quality of finished asphalt pavements by taking core samples for quantitative and qualitative analysis. The use of CT for material characterization presents a lot of possibilities in the future of asphalt concrete mix design. Originality/value Based on the validation process which includes comparisons between the values obtained from the image analysis and those from the performance test and it was found that the developed procedure satisfactorily assesses the air voids distribution and the aggregate interlock for this reason, it can be used.

scholarly journals Effect of Adding Crushed Glass to Asphalt Mix

2016 ◽  
Vol 62 (2) ◽  
pp. 35-44 ◽  
Author(s):  
Y. Issa
Keyword(s):  
Specific Gravity ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Waste Glass ◽  
Maintenance Cost ◽  
Original Sample ◽  
Air Voids ◽  
The World ◽  
Asphalt Mix

Abstract The need to modify conventional pavement rises due to high maintenance cost of the highway systems. With the continuously increased consumption, a large amount of waste glass materials is generated annually in the world. This paper aims to study the performance of pavement asphalt in which a fractional aggregate is replaced with crushed glass. In this paper, some important properties of asphalt mix, including stability, flow, specific gravity and air voids are investigated. The original sample is prepared without adding glass for different percentages of bitumen. Other samples are prepared by adding crushed glass to the mix with 5%, 10%, and 15% by aggregate weight. The results show that the properties of glass-asphalt mixture are improved in comparison with normal asphalt pavement. It is concluded that the use of waste glass in asphalt pavement is desirable.

scholarly journals BAHAN TAMBAH SERAT ECENG GONDOK PADA LASTON TIPE XI TERHADAP INDEKS MARSHALL TEST MENGGUNAKAN KERIKIL MANTUP

UKaRsT ◽  
2018 ◽  
Vol 2 (2) ◽  
pp. 8
Author(s):  
Sugeng Dwi Hartantyo ◽  
Rasiyo Hepiyanto
Keyword(s):  
Asphalt Concrete ◽  
Water Hyacinth ◽  
Heavy Traffic ◽  
Asphalt Mixture ◽  
Cellulose Fiber ◽  
Fine Aggregate ◽  
Traffic Loads ◽  
Marshall Test ◽  
Technical Specifications

Laston is a mixture of coarse aggregate, fine aggregate, and filler with a binder under the temperature of 145-155oC with the composition being studied and regulated by technical specifications. Laston is also known as AC (Asphalt Concrete).Laston itself is commonly used in Indonesia with continuous gradations used for heavy traffic loads. To get the addictive material is not easy and the material is expensive. Therefore, it is necessary to find alternatives to the cellulose fiber. Water hyacinth is a water weed that once grow and develop, it has high cellulose fiber content, which is about 60%.For that, done a research to add a hot asphalt mixture material that aims to improve the quality of mixed result. The selected material is natural water hyacinth. The method used is trial and error with reference of SNI 03-1737-1989. Variations used are 3%, 5%, and 7% of the asphalt weight, asphalt level used Is 5.61%.The result of this study is Marshall evaluation where the greatest score obtained for stability is 1325 kg,  Flow is 3.73 mm, Quotient Marshall is 401.02 kg/mm, VMA is 66.30%, VFWA is 19.25%, and VIM score is 54.35 %. With this result, the asphalt mixture can not be used because the results of VMA, VFWA, and VIM have not been suitable on specification of SNI 03-1737-1989.  Keywords: Laston, Asphalt Concrete, Water Hyacinth, SNI 03-1737-1989.

scholarly journals The use of Crushed Waste Glass as a Partial Replacement of Fine Aggregates in Asphalt Concrete Mixtures (Glassphalt)

2021 ◽  
pp. 1-10
Author(s):  
Gbadamosi Aderemi Tobi ◽  
Ogunsuyi Raphael Abidemi ◽  
Ojo Meshach Felix
Keyword(s):  
Asphalt Binder ◽  
Asphalt Mixture ◽  
Waste Glass ◽  
Partial Replacement ◽  
Glass Waste ◽  
Coarse Aggregates ◽  
Rapid Economic Growth ◽  
Marshall Test ◽  
Bitumen Content ◽  
Asphalt Mix

With the rapid economic growth and continuously increased consumption, a large amount of glass waste materials is generated; this study investigated the effect of crushed waste glass as filler and also as an aggregate in the asphalt binder course. It compares the glassphalt mix with the specification range at different percentages to meet specifications limit according to Nigeria roads and bridges reverse book of 1997 Waste glass are cleaned and crushed from the glass bottles and added to the asphalt as a filler and as a replacement for coarse aggregates, the marshal method is used to determine the optimum bitumen content and evaluate the properties of the asphalt mix. However, 24 samples were prepared in total, 12 samples each for the asphalt mix used to determine the optimum bitumen content and the other 12 samples for the glassphalt mix used to find out the effect of adding the different percentages of crushed waste glass to the asphalt mixture. The Marshall test carried out on the asphalt mixtures showed that the optimum bitumen content of bitumen was found out to be 6.2% of the asphalt mix by weight. Also, Marshall Test carried out on the glassphalt mix showed the optimum percentage of glass used in the binder course of the weights of aggregates in the asphalt mix. The result of this experiment is been checked to be consistent with the Nigeria road and bridges reverse book of 1997, i.e. Marshall Stability, flow, bulk density, and air voids.

Laboratory Assessment of Dense Graded Asphalt Concrete Incorporating Coal Furnace Ash in South of Vietnam

2021 ◽  
Vol 879 ◽  
pp. 117-125
Author(s):  
Dang Tung Dang ◽  
Manh Tuan Nguyen ◽  
Ngoc Tram Hoang ◽  
Anh Thang Le
Keyword(s):  
Asphalt Concrete ◽  
Asphalt Mixture ◽  
Coal Ash ◽  
Aggregate Size ◽  
Road Construction ◽  
Maximum Aggregate Size ◽  
Fine Aggregate ◽  
Laboratory Assessment ◽  
Laboratory Performance ◽  
Major Interest

Currently, application of industrial waste or by-product in road construction industrials is a major interest by researchers, government officers and engineers. Coal ashes by-product from industrial parks negatively impact environment, costly in treatment, and require large ground for disposing areas. Therefore, this paper proposes on using the coal ash from furnace products of an industrial park in South of Vietnam to be incorporated into dense graded asphalt concrete using Nominal Maximum Aggregate Size 12.5mm. Laboratory performance tests including Marshall stability, indirect tensile strength, Cantabro loss, and dynamic fatigue test were conducted. The effects of coal ash contents in replacement of fine aggregate which is passing 4.75mm sieve from asphalt mixture into laboratory performance of mixture is also discussed in detail.

Electrical, Thermal and Induction Heating Properties of Dense Asphalt Concrete

2013 ◽  
Vol 723 ◽  
pp. 303-311 ◽  
Author(s):  
Alvaro Garcia ◽  
Jose Norambuena-Contreras ◽  
Manfred N. Partl
Keyword(s):  
Induction Heating ◽  
Asphalt Concrete ◽  
Asphalt Mixture ◽  
Void Content ◽  
Steel Wool ◽  
Electrically Conductive ◽  
Wool Fibers ◽  
Conductive Fibers ◽  
Different Diameters ◽  
Air Void

Induction heating consists in adding electrically conductive fibers to the asphalt mixture and heating them with an induction heating device. But still, the factors that affect the increase of temperature are not well-known. With this purpose, 25 different mixtures, with the same aggregates distribution and amount of bitumen, but with 2 different lengths, 4 different quantities, and 4 different diameters of steel wool fibers have been considered. The influence of fibers on the air void content, electrical and thermal conductivity and on the induction heating of dense asphalt concrete has been studied. It was found that steel wool fibers increase slightly the electrical and thermal conductivities of dense asphalt concrete. Finally, it has been observed that the temperature reached due to the induction heating, increases with the number of fibers in the mixture and with their diameter.

scholarly journals Comparison of Potential Contribution of Typical Pavement Materials to Heat Island Effect

2020 ◽  
Vol 12 (11) ◽  
pp. 4752 ◽  
Author(s):  
Hailu Yang ◽  
Kai Yang ◽  
Yinghao Miao ◽  
Linbing Wang ◽  
Chen Ye
Keyword(s):  
Asphalt Concrete ◽  
Asphalt Mixture ◽  
Potential Contribution ◽  
Heat Island ◽  
Cement Concrete ◽  
Porous Asphalt ◽  
Pavement Materials ◽  
Island Effect ◽  
Urban Heat ◽  
Better Than

Pavement materials have significant influence on the urban heat island effect (UHIE). This paper presents a study on the potential effects of pavement materials on UHIE in a natural environment. Three typical pavement materials, including cement concrete, dense asphalt concrete and porous asphalt mixture, were selected to evaluate their anti-UHIE properties by testing. In this paper, heat island potential (HIP) is proposed as a new index to analyze the influence of pavement materials on UHIE. It is shown that the temperature inside a pavement distinctly depends on the depth, and varies, but is usually higher than the air temperature. Solar radiation in the daytime significantly contributes to the temperature of pavement surface and the upper part. The correlation becomes weak at the middle and the bottom of pavements. Among the three materials tested in this study, the anti-UHIE performance of cement concrete is significantly higher than that of the other asphalt mixtures, while the porous asphalt mixture is slightly better than the dense asphalt concrete in anti-UHIE.

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.

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