PENGGUNAAN CAMPURAN PLASTIK DAN KACA KITAR SEMULA SEBAGAI AGREGAT GANTIAN DALAM CAMPURAN BERASFALT

2015 ◽  
Vol 76 (1) ◽  
Author(s):  
Nur Mustakiza Zakaria ◽  
Derma Nur Ashikin Nong Radzif ◽  
Mohammad Kamal Hassan ◽  
Asmah Hamim ◽  
Nur Izzi Md. Yusoff
Keyword(s):  
Resilient Modulus ◽  
Control Sample ◽  
Asphalt Mixtures ◽  
Asphalt Pavements ◽  
Waste Plastics ◽  
Creep Tests ◽  
Recycled Glass ◽  
Static Creep ◽  
In Situ Conditions ◽  
Recycled Plastics

The major problem in landfill is the large amount of solid wastes dumped in landfill. Waste plastics and glass contribute greatly to the problem and this needs to be managed in order to extend the life of landfill sites. Hence, this study was conducted to investigate the feasibility of using these waste materials in asphalt mixtures for pavement applications. The mixtures were designed by means of the Superior Performing Asphalt Pavements (Superpave) method. Various types of recycled waste plastics and glasses; namely bottle glass, LCD glass and sheet glass were selected in this study. Approximately 5% of recycled materials (by the total weight of asphalt mixtures) were used as an aggregate replacement. In this study, asphalt mixtures were aged in the laboratory to simulate the in-situ conditions of short-term and long-term ageing. After completion, samples were tested for resilient modulus, dynamic creep and static creep tests. It was found that replacements of 1% recycled plastics and 4% recycled glass show almost similar and satisfactory result compared to control sample for all tests. Consequently, recycled plastics and recycled glass, at their optimum blending, can be considered feasible to be used as an aggregate replacement in asphalt mixtures for road surfacing.  

THE USE OF MIXED WASTE RECYCLED PLASTIC AND GLASS AS AN AGGREGATE REPLACEMENT IN ASPHALT MIXTURES

2017 ◽  
Vol 80 (1) ◽  
Author(s):  
Nur Mustakiza Zakaria ◽  
Mohammad Kamal Hassan ◽  
Ahmad Nazrul Hakimi Ibrahim ◽  
Sri Atmaja P. Rosyidi ◽  
Nur Izzi Md. Yusoff ◽  
...  
Keyword(s):  
Resilient Modulus ◽  
Liquid Crystal Display ◽  
Asphalt Mixture ◽  
Control Sample ◽  
Asphalt Mixtures ◽  
Waste Plastics ◽  
Recycled Glass ◽  
Materials Used ◽  
Marshall Stability

One of the major problems with landfills is that they contain a large amount of solid wastes. Waste plastics and glasses contribute greatly to this problem, and these materials need to be managed or recycled to extend the life of landfill sites. Hence, this study was conducted to investigate the feasibility of using these waste materials in asphalt mixtures for pavement applications. Various types of recycled waste plastics and glasses were selected for this study and the mix containing these materials was designed by the Marshall method. Three types of glass were used: bottle glass, liquid-crystal display (LCD) glass, and sheet glass. In terms of the total weight of the asphalt mixtures, approximately 5% constituted of recycled materials used as an aggregate replacement. In this study, asphalt mixtures were aged in the laboratory to simulate the site conditions of short-term and long-term ageing. After the ageing process, samples were tested for asphalt mixture performance characteristics in terms of the following parameters: Marshall Stability and Flow, Marshall Quotient and resilient modulus. It was found that the replacement combining 1% recycled plastic and 4% recycled glass shows almost similar and satisfactory results compared to the control sample for all tests. Therefore, recycled plastic and recycled glass, when optimally blended, can be considered feasible to be used as an aggregate replacement in asphalt mixtures for flexible road pavements.

Laboratory Investigate of the Effect of Fine Aggregates on Asphalt Mixture Materials

2011 ◽  
Vol 225-226 ◽  
pp. 577-580
Author(s):  
Yong Ye ◽  
Yi Zhou Cai
Keyword(s):  
Compressive Strength ◽  
Asphalt Mixture ◽  
Aggregate Size ◽  
Asphalt Mixtures ◽  
Fine Aggregate ◽  
Test Results ◽  
Creep Tests ◽  
Aggregate Gradation ◽  
Static Creep ◽  
Fine Aggregates

The objective of this study is to investigate and evaluate the effect of fine aggregates (aggregate size smaller than or equal to 2.36 mm) on the compressive strength and creep behavior of asphalt mixtures. The variables that are considered in the study include the sizes and gradations of fine aggregate. A kind of standant aggregate gradation and four kinds of reduced aggregate gradation mixture specimens are used. Uniaxial compression and static creep tests were realized at different loading conditions. The test results showed that the different fine aggregate sizes do not result in significant differences in compressive strength and creep values using the same percentage of fine aggregates (38.4%). Only the different gradations showed a little differences for mixtures made with different gradations but same aggregate size (between 2.36 and 1.18 mm).

scholarly journals Viscoelastic Properties of Asphalt Mixtures with Different Modifiers at Different Temperatures Based on Static Creep Tests

2019 ◽  
Vol 9 (20) ◽  
pp. 4246 ◽  
Author(s):  
Yongchun Cheng ◽  
He Li ◽  
Liding Li ◽  
Yuwei Zhang ◽  
Haitao Wang ◽  
...  
Keyword(s):  
Viscoelastic Properties ◽  
Asphalt Mixture ◽  
Maxwell Model ◽  
Asphalt Mixtures ◽  
Creep Tests ◽  
Kelvin Model ◽  
Static Creep ◽  
Generalized Maxwell Model ◽  
Different Temperatures ◽  
Generalized Kelvin Model

To obtain the viscoelastic parameters of asphalt mixtures and analyze the effect of temperatures and modifiers on viscoelastic properties of asphalt mixtures, the creep compliances of the neat asphalt mixture (AM), compound diatomite and basalt fibers reinforced asphalt mixture (DBFAM), and styrene-butadiene-styrene modified asphalt mixture (SBSAM) were tested and calculated by the static creep tests. And the creep compliances of the three asphalt mixtures at −20 °C, −10 °C, and 0 °C are deducted by the time–temperature equivalence principle (TTEP) and Arrhenius equation. Further, the relaxation modulus of the three asphalt mixtures from −20 °C to 50 °C at 10 °C increments are calculated by the convolution integral and Simpson method. Subsequently, the Burgers model, the generalized Kelvin model, and the generalized Maxwell model are applied to analyze the viscoelastic properties of the three asphalt mixtures at different temperatures. The results show that the generalized Kelvin model and the generalized Maxwell model are superior to the Burgers model in describing the variation of viscoelastic properties of asphalt mixtures with loading time. At low temperatures, asphalt mixtures have excellent properties in resisting permanent deformation and releasing internal stress. Besides, the addition of SBS modifier and compound diatomite and basalt fibers modifier can significantly raise the viscosity η1 and the elastic modulus E1 of the asphalt mixture, respectively.

EVALUATION OF SPEED EFFECT OF VEHICLES ON ASPHALT PAVEMENT

2015 ◽  
Vol 2 (1) ◽  
Author(s):  
M. Imran Khan ◽  
Hanif Ullah ◽  
Kamran M. Khan ◽  
Kafayatullah Khan ◽  
Md. Arifuzzaman
Keyword(s):  
Elastic Material ◽  
Pulse Width ◽  
Resilient Modulus ◽  
Permanent Deformation ◽  
Testing Machine ◽  
Asphalt Pavements ◽  
Vehicle Speed ◽  
Moving Loads ◽  
Creep Tests ◽  
Speed Effect

The main objective of this study was to investigate the speed effect of vehicles on the Hot Mix Asphalt. These effects were determined in terms of permanent deformation (rutting) and cracking since they are the major distresses in flexible pavement, which are caused due to overloading, speed of vehicles and high temperature variation. In this study, a total of 12 samples were prepared by Marshal Compactor. The Uni-axial repeated creep tests were carryout using a Universal Testing Machine (UTM-5P). The testing were done on asphalt samples for loading pulse period duration of 1,500 ms and pulse width of 200 ms (0.2 sec), 400 ms (0.4 sec), 600 ms (0.6 sec), 800 ms (0.8 sec), 1000 ms (1 sec) and 1,200 ms (1.2 sec). Two replicate samples were tested under each pulse width. The temperature was kept constant for all the samples, which was 40ºC. It was observed that with the increase in pulse width (i.e. loading time) the resilient modulus decreases. This is due to asphalt concrete behavior as visco-elastic material; which behaves like the elastic material at fast moving loads and then behaves like viscous material at slow moving loads. Hence increment in vehicle speed causes the pavement failure pre-maturely. Similarly, with the increase in pulse width the accumulated strain increases, which indicates that the low speed vehicles cause permanent deformation (rutting) to asphalt pavements.

scholarly journals Performance Evaluation of WMA Containing Re-Refined Acidic Sludge and Amorphous Poly Alpha Olefin (APAO)

2021 ◽  
Vol 13 (6) ◽  
pp. 3315
Author(s):  
Mansour Fakhri ◽  
Danial Arzjani ◽  
Pooyan Ayar ◽  
Maede Mottaghi ◽  
Nima Arzjani
Keyword(s):  
Resilient Modulus ◽  
Permanent Deformation ◽  
Road Construction ◽  
Moisture Damage ◽  
Asphalt Mixtures ◽  
Modified Bitumen ◽  
Alternative Source ◽  
The Road ◽  
Marshall Test ◽  
Alpha Olefin

The use of waste materials has been increasingly conceived as a sustainable alternative to conventional materials in the road construction industry, as concerns have arisen from the uncontrolled exploitation of natural resources in recent years. Re-refined acidic sludge (RAS) obtained from a waste material—acidic sludge—is an alternative source for bitumen. This study’s primary purpose is to evaluate the resistance of warm mix asphalt (WMA) mixtures containing RAS and a polymeric additive against moisture damage and rutting. The modified bitumen studied in this research is a mixture of virgin bitumen 60/70, RAS (10, 20, and 30%), and amorphous poly alpha olefin (APAO) polymer. To this end, Marshall test, moisture susceptibility tests (i.e., tensile strength ratio (TSR), residual Marshall, and Texas boiling water), resilient modulus, and rutting assessment tests (i.e., dynamic creep, Marshall quotient, and Kim) were carried out. The results showed superior values for modified mixtures compared to the control mix considering the Marshall test. Moreover, the probability of a reduction in mixes’ moisture damage was proved by moisture sensitivity tests. The results showed that modified mixtures could improve asphalt mixtures’ permanent deformation resistance and its resilience modulus. Asphalt mixtures containing 20% RAS (substitute for bitumen) showed a better performance in all the experiments among the samples tested.

Effect of Coarse Aggregate Morphology on the Resilient Modulus of Hot-Mix Asphalt

2005 ◽  
Vol 1929 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Tongyan Pan ◽  
Erol Tutumluer ◽  
Samuel H. Carpenter
Keyword(s):  
Surface Texture ◽  
Coarse Aggregate ◽  
Resilient Modulus ◽  
Asphalt Binder ◽  
Aggregate Size ◽  
Asphalt Mixtures ◽  
Maximum Aggregate Size ◽  
Asphalt Mixes ◽  
Aggregate Morphology ◽  
The Relationship

The resilient modulus measured in the indirect tensile mode according to ASTM D 4123 reflects effectively the elastic properties of asphalt mixtures under repeated load. The coarse aggregate morphology quantified by angularity and surface texture properties affects resilient modulus of asphalt mixes; however, the relationship is not yet well understood because of the lack of quantitative measurement of coarse aggregate morphology. This paper presents findings of a laboratory study aimed at investigating the effects of the material properties of the major component on the resilient modulus of asphalt mixes, with the coarse aggregate morphology considered as the principal factor. With modulus tests performed at a temperature of 25°C, using coarse aggregates with more irregular morphologies substantially improved the resilient modulus of asphalt mixtures. An imaging-based angularity index was found to be more closely related to the resilient modulus than an imaging-based surface texture index, as indicated by a higher value of the correlation coefficient. The stiffness of the asphalt binder also had a strong influence on modulus. When the resilient modulus data were grouped on the basis of binder stiffnesses, the agreement between the coarse aggregate morphology and the resilient modulus was significantly improved in each group. Although the changes in aggregate gradation did not significantly affect the relationship between the coarse aggregate morphology and the resilient modulus, decreasing the nominal maximum aggregate size from 19 mm to 9.5 mm indicated an increasing positive influence of aggregate morphology on the resilient modulus of asphalt mixes.

scholarly journals Viscoelastic Parameters of Asphalt Mixtures Identified in Static and Dynamic Tests

Materials ◽  
2019 ◽  
Vol 12 (13) ◽  
pp. 2084 ◽  
Author(s):  
Piotr Mackiewicz ◽  
Antoni Szydło
Keyword(s):  
Permanent Deformation ◽  
Asphalt Mixture ◽  
Dynamic Test ◽  
Asphalt Mixtures ◽  
Rheological Parameters ◽  
Dynamic Tests ◽  
Static Test ◽  
Viscoelastic Parameters ◽  
Static Creep ◽  
Asphalt Content

We present two methods used in the identification of viscoelastic parameters of asphalt mixtures used in pavements. The static creep test and the dynamic test, with a frequency of 10 Hz, were carried out based on the four-point bending beam (4BP). In the method identifying viscoelastic parameters for the Brugers’ model, we included the course of a creeping curve (for static creep) and fatigue hysteresis (for dynamic test). It was shown that these parameters depend significantly on the load time, method used, and temperature and asphalt content. A similar variation of parameters depending on temperature was found for the two tests, but different absolute values were obtained. Additionally, the share of viscous deformations in relation to total deformations is presented, on the basis of back calculations and finite element methods. We obtained a significant contribution of viscous deformations (about 93% for the static test and 25% for the dynamic test) for the temperature 25 °C. The received rheological parameters from both methods appeared to be sensitive to a change in asphalt content, which means that these methods can be used to design an optimal asphalt mixture composition—e.g., due to the permanent deformation of pavement. We also found that the parameters should be determined using the creep curve for the static analyses with persistent load, whereas in the case of the dynamic studies, the hysteresis is more appropriate. The 4BP static creep and dynamic tests are sufficient methods for determining the rheological parameters for materials designed for flexible pavements. In the 4BP dynamic test, we determined relationships between damping and viscosity coefficients, showing material variability depending on the test temperature.

The performance of hot mix asphalt in dynamic and static creep tests

2017 ◽  
Vol 35 (15) ◽  
pp. 1627-1634 ◽  
Author(s):  
Alireza Khavandi Khiavi ◽  
Saeed Mansoori
Keyword(s):  
Hot Mix Asphalt ◽  
Creep Tests ◽  
Static Creep

Pavement Performance of Hot In-Place Recycling for Waste Asphalt Mixtures

2013 ◽  
Vol 668 ◽  
pp. 292-296
Author(s):  
Ya Li Ye ◽  
Chuan Yi Zhuang ◽  
Jia Bo Hu
Keyword(s):  
Asphalt Mixture ◽  
Asphalt Mixtures ◽  
Asphalt Pavements ◽  
Pavement Performance ◽  
Test Results ◽  
Technical Parameters ◽  
Stable Performance ◽  
Wheel Tracking Test ◽  
Asphalt Content ◽  
Wheel Tracking

With the early asphalt pavements have been into the stage of medium maintenance or overhaul, recycling is a very important way for waste asphalt mixtures. A sample was taken in the expressway from Huhhot to Baotou, and the waste mixtures were extracted from field and sieved; so that the new aggregates can be determined and mix design was carried. With the aid of the penetration, the softening point and the viscosity in 135°C test, the quantity of the regenerant and the asphalt content were ascertained. Through the high temperature stable performance, the anti-low temperature performance, the water stability and the Hamburg wheel-tracking test, the appropriate gradation and the optimum asphalt content were determined. The test results showed that the pavement performance of the waste asphalt mixture was enhanced obviously with hot in-place recycling, and it has achieved technical parameters for old asphalt mixture.

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