scholarly journals Influence of Polypropylene Length on Stability and Flow of Fiber-reinforced Asphalt Mixtures

2016 ◽  
Vol 2 (10) ◽  
pp. 538-545 ◽  
Author(s):  
Ramin Bayat ◽  
Siamak Talatahari
Keyword(s):  
Asphalt Concrete ◽  
Asphalt Pavement ◽  
Flexible Pavements ◽  
Asphalt Mixture ◽  
Fatigue Cracking ◽  
Asphalt Mixtures ◽  
Concrete Mixture ◽  
Fiber Reinforced ◽  
Surface Distress ◽  
Marshall Stability

Engineers are constantly trying to improve the performance of the flexible pavements. The main surface distress types which cause maintenance and disruption are rutting and fatigue cracking. For solving these problems, many studies have been carried out until now, ranged from changing gradation to adding polymers and fibers to asphalt mixture. In this study, polypropylene additive was selected as fiber additive because of low costing and having good correlation with asphalt pavement. Three type of polypropylene additive in the length 6, 12 and 19 mm were selected and used at five different percentages in the asphalt concrete mixture. Asphalt specimens were analysed by Marshall Analysis and finally tested by Marshall Stability apparatus. Adding polypropylene increased Marshall Stability (38%), and decreased Flow (39%). These results show that polypropylene can be helpful for increasing pavement life.

Determining Optimum Carbon Nanotubes Content for Asphalt Mixture in Road Pavements

2021 ◽  
Vol 1023 ◽  
pp. 121-126
Author(s):  
Van Bach Le ◽  
Van Phuc Le
Keyword(s):  
Carbon Nanotubes ◽  
Asphalt Pavement ◽  
Asphalt Binder ◽  
Asphalt Mixture ◽  
Construction Cost ◽  
Asphalt Mixtures ◽  
Static Modulus ◽  
Pavement Construction ◽  
Modified Binder ◽  
Marshall Stability

Although small amount of binder in asphalt concrete mixture may commonly range from 3.5 to 5.5% of total mixture as per many international specifications, it has a significant impact on the total cost of pavement construction. Therefore, this paper investigated the effects of five carbon nanotubes contents of 0.05%, 0.1%, 0.15%, 0.2%, 0.25% by asphalt weight as an additive material for binder on performance characteristics of asphalt mixtures. Performance properties of CNTs modified asphalt mixtures were investigated through the Marshall stability (MS) test, indirect tensile (IDT) test, static modulus (SM) test, wheel tracking (WT) test. The results indicated that asphalt mixtures with CNT modified binder can improve both the rutting performance, IDT strength and marshall stability of tested asphalt mixtures significantly at higher percentages of carbon nanotubes. However, the issue that should be considered is the construction cost of asphalt pavement. Based on the asphalt pavement structural analysis and construction cost, it can be concluded that an optimum CNT content of 0.1% by asphalt weight may be used as additive for asphalt binder in asphalt mixtures.

scholarly journals Karakteristik Marshall Pada Campuran Asphalt Concrete – Wearing Course (AC-WC) Dengan Penambahan Styrofoam

2019 ◽  
Vol 8 (2) ◽  
pp. 51-62
Author(s):  
Ika Sulianti ◽  
Ibrahim Ibrahim ◽  
Agus Subrianto ◽  
Adelia Monita ◽  
Medici Medici
Keyword(s):  
Asphalt Concrete ◽  
Asphalt Pavement ◽  
Flexible Pavement ◽  
Asphalt Mixtures ◽  
Concrete Mixture ◽  
Pavement Performance ◽  
Food Container ◽  
Optimum Stability ◽  
Marshall Test

Styrofoam waste presents the environment issue because it is difficult to decompose. As an effort to recycle this pollutant, styrofoam can be utilized as an additive in asphalt concrete mixture. The use of additives aims to create a flexible pavement layer having good performance and meet the requirements. The purpose of this study is to find out whether the addition of styrofoam can improve the quality of asphalt mixtures, and look for alternative additives that can increase asphalt pavement performance. In this study, researchers used food container styrofoam as an addition and incorforated into Asphalt Concrete Wearing Course (AC-WC) mixture. The styrofoam content was 6.5%; 6.75%; 7% ; 7.25%; and 7.5% of asphalt weight. The optimum asphalt contentused is 5.5%. The value of the optimum stability was 3126,002 kg, found at 7.25% of styrofoam content. The best results of Marshall test was obtained at 6.5% of styrofoam content  with stability value  1362,045 kg, VIM value 4,96%, VMA 15,025%, VFA 67,800%, flow 3,44 mm, and MQ 416,338 kg / mm.

scholarly journals Investigating the Effect of Olive Husk Ash on the Properties of Asphalt Concrete Mixture

2021 ◽  
Vol 45 (1) ◽  
pp. 11-15
Author(s):  
Arabi N.S. Al Qadi ◽  
Taisir S. Khedaywi ◽  
Madhar A. Haddad ◽  
Owies A. Al-Rababa'ah
Keyword(s):  
Asphalt Concrete ◽  
Construction Material ◽  
Asphalt Binder ◽  
Asphalt Mixture ◽  
Concrete Mixture ◽  
Mineral Aggregate ◽  
Limestone Aggregate ◽  
Olive Husk ◽  
Pavement Construction ◽  
Marshall Stability

Technology in transportation used available resources to make it safe, fast, suitable, easy, economic, and environmental to transport people and goods. Olive Husk became an environmental problem as waste materials especially in the Middle East where huge quantities are found. The objective of this research is to investigate the effect of addition of Olive Husk Ash (OHA) on the properties of asphalt concrete mixtures. Marshall Test was used to perform the asphalt concrete mixture by the addition of OHA to the binder of asphalt; different percentages of OHA (0, 5, 10, 15, and 20%) by volume were added to the binder. Five percent of asphalt cements (5, 5.5, 6, 6.5 and 7%) by weight and limestone aggregate were used for preparing asphalt mixture specimens to find the optimum content of asphalt that could be used in the binder. Tests on flow, stability, air void percentage and void in mineral aggregate, retained stability, stiffness, and retained stiffness were made. The principle results on OHA as filler in Asphalt binder improves the Marshall Stability, and void in mineral aggregate and decrease in flow, retained stability, stiffness, and retained stiffness with a 10%-15% of olive husk ash replacement of asphalt binder. The contribution that OHA could be used as a pavement construction material in field.

scholarly journals Fundamental Approaches to Predict Moisture Damage in Asphalt Mixtures: State-of-the-Art Review

2020 ◽  
Vol 5 (2) ◽  
pp. 20 ◽  
Author(s):  
Hilde Soenen ◽  
Stefan Vansteenkiste ◽  
Patricia Kara De Maeijer
Keyword(s):  
State Of The Art ◽  
Asphalt Pavement ◽  
Flexible Pavements ◽  
Asphalt Mixture ◽  
Moisture Damage ◽  
Test Methods ◽  
Asphalt Mixtures ◽  
Moisture Susceptibility ◽  
The Individual

Moisture susceptibility is still one of the primary causes of distress in flexible pavements, reducing the pavements’ durability. A very large number of tests are available to evaluate the susceptibility of a binder aggregate combination. Tests can be conducted on the asphalt mixture, either in a loose or compacted form, or on the individual components of an asphalt pavement. Apart from various mechanisms and models, fundamental concepts have been proposed to calculate the thermodynamic tendency of a binder aggregate combination to adhere and/or debond under wet conditions. The aim of this review is to summarize literature findings and conclusions, regarding these concepts as carried out in the CEDR project FunDBits. The applied test methods, the obtained results, and the validation or predictability of these fundamental approaches are discussed.

scholarly journals Laboratory comparative assessment of warm and hot mixes Asphalt containing reclaimed Asphalt pavement

2020 ◽  
Vol 8 (2) ◽  
pp. 15-26
Author(s):  
Hasan H Joni ◽  
Aqeel Y M Alkhafaji
Keyword(s):  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Warm Mix Asphalt ◽  
Asphalt Mixtures ◽  
Reclaimed Asphalt Pavement ◽  
Moisture Resistance ◽  
Recycled Asphalt ◽  
Reclaimed Asphalt ◽  
Marshall Stability ◽  
The Impact

Warm mix Asphalt (WMA) could be mixed and used in paving at low temperatures to minimize the consumption of energy and the emissions of greenhouse gas. Recycled Asphalt pavement (RAP) could save Asphaltic cement and aggregate, which could achieve the better effects of recycling. However, both of the two WMA and RAP technologies have some deficiencies. Warm mix Asphalt and Reclaimed Asphalt pavement (WMA-RAP) technique may solve these issues and deficiencies when they are utilized together. This study investigated the implementations of WMA-RAP and its impacts on the performance of the Asphalt mixture. Under the framework of this study, four percentages of RAP (0%, 20%, 30%, and 40%) were added to the hot mix Asphalt (HMA) and WMA containing 4% Sasobit to study the impact of increasing RAP content on Marshall stability and moisture resistance of Asphalt mixtures. In summary, the Marshall stability of HMA and WMA mixtures is higher than the control mixtures. A small decrease in moisture resistance of both (HMA and WMA) containing RAP comparing to control mixtures Asphalt was observed, as shown by reduced the tensile strength ratios (TSR), but it is still much higher than the minimum of 80%.

High Temperature Stability of Modified Asphalt Concrete

2013 ◽  
Vol 438-439 ◽  
pp. 391-394 ◽  
Author(s):  
Yuan Zhao Chen ◽  
Zhen Xia Li
Keyword(s):  
High Temperature ◽  
Asphalt Concrete ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Asphalt Mixtures ◽  
High Temperature Stability ◽  
Weak Stability ◽  
Modified Asphalt ◽  
Longitudinal Slope

According to high temperature weak stability of common asphalt mixture, rutting tests of diatomite modified asphalt mixture, modified lake asphalt mixture, modified rock asphalt mixture and common asphalt mixture are carried out. Changes of dynamic stability for common asphalt mixture compared with modified asphalt mixtures are comparatively analysed. The results show that compared with common asphalt mixture, rutting resistances of diatomite modified asphalt mixture, modified lake asphalt mixture and modified rock asphalt mixture are greatly improved. It is proposed that those kinds of modified asphalt mixture are adopted in asphalt pavement of large longitudinal slope section.

scholarly journals Mixture Composition Analysis Of Reclaimed Asphalt Pavement (RAP) As Asphalt Concrete – Wiring Course (AC-WC) Layer Against Marshall Characteristic

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Wahyu Aunur Rahman Hakim
Keyword(s):  
Asphalt Concrete ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Mixture Composition ◽  
Composition Analysis ◽  
Reclaimed Asphalt Pavement ◽  
Road Maintenance ◽  
Reclaimed Asphalt ◽  
Natural Aggregate ◽  
Marshall Stability

Reclaimed Asphalt Pavement of national roads in East Java Province can be used at AC-WC, AC-BC, AC-Base layers, with a percentage of RAP usage of 20-40%, optimum RAP of 20-30%, asphalt’s content in RAP of 3,78-4.63% (Widayanti, 2018). The composition of the addition for 20% RAP which is originated by Taman-Waru with natural aggregates produces Marshall stability of 830.482 kg and melting / flow of 3.8 mm (Handayani, 2007). Therefore, it is necessary to have research of the analysis about the composition of the Reclaimed Asphalt Pavement (RAP) in the amount of 25%, 30%, 35% as the Asphalt Concrete - Wiring Course (AC-WC) layer against the characteristics of the Marshall. The purpose of this research are 1.) To find out the optimum asphalt content (KAO) in a mixture of AC-WC (Asphalt Concrete - Wearing Course) asphalt and 60/70 Asphalt mixture with the usage of RAP material and natural aggregate in accordance with the General Specifications of Bina Marga 2018 2.) Knowing the effect of the usage of RAP material and natural aggregate for the   gradation of asphalt mixture of AC-WC (Asphalt Concrete - Wearing Course) in accordance with the General Specifications of Bina Marga 2018 3.) Knowing the performance of AC-WC asphalt concrete mixture (Asphalt Concrete - Wearing Course) and 60/70 asphalt mixture of RAP material and natural aggregate in terms of Stability and Marshall Quotient values. The research was carried out by the experimental method through laboratory testing. The expected benefit of this research is the discovery for optimizing of the usage recycle materials from road pavement that will be reused during the implementation of road maintenance work and give an alternative of the minimum natural aggregate’s usage. The result of the testing in the laboratory, the mixture of heat asphalt AC-WC with 25% of RAP, had the highest Marshall stability of characteristic for 1309 kg. It’s caused the new materials of the mixture composition has better quality than the mixture of   RAP materials, but the additions of RAP composition for 25%, 30%, 35% still can be used as the alternative substitution of nature aggregate, because those are still the Bina Marga’s specification in 2018 of AC-WC mixture.

scholarly journals PENGARUH SUBSTITUSI AGREGAT HALUS SABANG TERHADAP KINERJA LASTON LAPIS AUS (AC-WC)

2018 ◽  
Vol 1 (4) ◽  
pp. 89-98
Author(s):  
Mohd Fahmi Abdya P. ◽  
Sofyan M. Saleh ◽  
Yusria Darma
Keyword(s):  
Asphalt Concrete ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Initial Step ◽  
Concrete Mixture ◽  
Fine Aggregate ◽  
Aceh Province ◽  
Asphalt Content ◽  
On The Road ◽  
The Stability

Asphalt and Aggregate is the main ingredient of the asphalt concrete layer which determines the quality of asphalt pavement. One of the main cause of the damage and decrease of asphalt pavement strength on the road is the low strength and durability of the asphalt mixture. . But in the other side the utilization of local materials is expected to be used maximally to improve efficiency in terms of financing, especially for island area such as Sabang city of Aceh Province. Importing material from Ace Besar district is need a big cost. In solving this problem therefore it is necessary to maximize the use of local material. this research is done for find out the effect of the use of fine aggregate on the characteristics of the coarse layer of asphalt concrete mixture characteristics (AC-WC)with the addition of Sabang fine aggregate starting from 0%, 25%, 50%, 75% and 100%. The initial step in this research is find the value of optimum asphalt content (KAO).The result of this research shows that the more composition of the Sabang fine aggregate then the decreasing the stability value. The highest stability value is on the asphalt concrete mixture without Sabang fine aggregate substitution with the asphalt content is 5,38% with the amount of 1.658,73 kg and the lowest stability value is on the asphalt concrete mixture with 100% of Sabang fine aggregate substitution with asphalt content is 6,35% in the amount of 979,35 kg. The maximum composition of sabang fine aggregate which pass the requirement specification of Asphalt concrete AC-WC volumetric characteristic is 50% on the level of 5,87% with the stability value is 1.225,81 kg.

Research on anti-fatigue ability of Sisal Fiber Asphalt Mixture Pavement

2013 ◽  
Vol 405-408 ◽  
pp. 1782-1785
Author(s):  
Zi Ye He ◽  
Fu Xue Liu
Keyword(s):  
Asphalt Concrete ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Fatigue Cracking ◽  
Concrete Pavement ◽  
Pavement Performance ◽  
Sisal Fiber ◽  
Viscoelastic Parameters ◽  
Cracking Performance ◽  
Asphalt Concrete Pavement

Fatigue crack is one of the main road damage forms of asphalt pavement structure, and serious impact the asphalt pavement performance and service life. Asphalt mixture has typical viscoelastic,and can get Burgers model and viscoelastic parameters form creep test. Using finite element method of fracture mechanics, simulation under dynamic loading, research crack extending behavior of common asphalt concrete pavement and mixed with 0.2% of sisal fiber asphalt concrete pavement. From the results, it can find out that when mixed with sisal fiber, the anti-fatigue cracking performance is obvious enhancement.

scholarly journals Increasing the Stability of Asphalt Concrete Mixture Using Crumb Rubber

2021 ◽  
Vol 328 ◽  
pp. 10002
Author(s):  
Fajar Romadhon ◽  
Agata Iwan Candra ◽  
Dwifi Aprillia Karisma ◽  
Muhammad Heri Nastotok ◽  
Rendy Kurnia Dewanta ◽  
...  
Keyword(s):  
Asphalt Concrete ◽  
Asphalt Mixture ◽  
Road Construction ◽  
Crumb Rubber ◽  
Concrete Mixture ◽  
Road Pavement ◽  
Road Users ◽  
Concrete Mixtures ◽  
The Stability ◽  
Marshall Stability

Stability is a measure of the strength of an asphalt mixture in resisting deformation due to loading. If a road construction structure cannot withstand the existing load, it will result in road damage that endangers road users. This study aims to improve the stability of the asphalt concrete mixture with the use of crumb rubber. Crumb rubber is used because it has good resistance and elasticity. The research was conducted experimentally by making test objects in the laboratory. In this study, five variations crumb rubber (2%, 4%, 6%, 8%, and 10% of the weight asphalt mixture) were carried out with the size of the powder retained on a 40 sieve. Marshall test and analysis of volumetric was carried out to determine the characteristics of the asphalt-concrete mixture. The results showed that the highest Marshall stability was obtained at 10% crumb rubber with a stability value of 1422 kg. The use of rubber powder can significantly increase the strength and quality of the asphalt-concrete mixture. Thus, crumb rubber can be used, and this percentage can be used as a reference in the manufacture of asphalt-concrete mixtures in order to obtain good road pavement quality.

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