A study on the evaluation of physical perperties of the guss mastic asphalt mixture with the polymer modifiers

2021 ◽  
Vol 23 (4) ◽  
pp. 83-90
Author(s):  
Tae Soon Park ◽  
Dong Min Cho
Keyword(s):  
Asphalt Mixture ◽  
Mastic Asphalt ◽  
Polymer Modifiers

Performance Characterization of Stone Mastic Asphalt using Steel Fiber

2021 ◽  
Vol 02 (02) ◽  
Author(s):  
Ekarizan Shaffie ◽  
◽  
H.A. Rashid ◽  
Fiona Shiong ◽  
Ahmad Kamil Arshad ◽  
...  
Keyword(s):  
Steel Fiber ◽  
Mechanical Performance ◽  
Permanent Deformation ◽  
Asphalt Mixture ◽  
Moisture Susceptibility ◽  
Mastic Asphalt ◽  
Bitumen Content ◽  
Stone Mastic Asphalt ◽  
The Stability ◽  
Marshall Stability

Stone Mastic Asphalt (SMA) is a gap-graded hot mixture designed to provide higher resistance towards permanent deformation and rutting potential by 30% to 40% more than dense-graded asphalt, due to its stable aggregate skeleton structure. However, compared to other types of hot mix asphalt, SMA unfortunately has some shortcomings in term of its susceptibility towards moisture-induced damage due to its structure and excessive bitumen content in the composition. This research aims to assess the performance of a SMA mixture with steel fiber by enhancing overall stability, abrasion resistance, and, most importantly, moisture susceptibility. This study involved the incorporation of various steel fiber proportions of 0%, 0.3%, 0.5% and 0.7% by the total weight of mixture. The steel fiber modified SMA was made up of 6.0% PEN 60/70 bitumen content. The performance of SMA were evaluated through Marshall stability and flow test, Cantabro loss test and indirect tensile strength test. The results obtained from the testing showed that the incorporation of steel fiber is significantly effective to enhance the resistance towards moisture damage, while increasing the stability and reducing the abrasion loss of SMA mixture, compared to conventional mixture. Overall, it can be concluded that the addition of steel fiber in asphalt mixture specifically SMA, has improved the mechanical performance in the application of asphalt pavement with the optimum steel fiber proportion of 0.3% by the weight of mixture. The developed models between the independent variables and responses demonstrated high levels of correlation. The study found that Response Surface Methodology (RSM) is an effective statistical method for providing an appropriate empirical model for relating parameters and predicting the optimum performance of an asphaltic mixture to reduce flexible pavement failure.

scholarly journals Determination of temperature regimes of producing of mastic asphalt concrete mixtures on bitumen binders of different consistency

2021 ◽  
Vol 2 (92) ◽  
pp. 51
Author(s):  
Serhii Oksak
Keyword(s):  
Asphalt Concrete ◽  
Research Work ◽  
Asphalt Mixture ◽  
Asphalt Mixtures ◽  
Limestone Powder ◽  
Mixture Component ◽  
Mastic Asphalt ◽  
Temperature Regimes ◽  
High Tempera Ture ◽  
The One

Abstract. Problem. The temperature of mastic as-phalts mixing is significantly higher than the one for hot asphalt mixtures. It is due using of high viscous bitumens as a mixture component and realizing the main advantage of mastic asphalt – its ability to flow and compact with its own weight at high tempera-ture. There is no uniform way to assign the process temperatures for mastic asphalt. Goal. To find the process temperatures for mastic asphalt with bitumen binders differ by viscosity as a researching on tem-perature influence and influence of binder concentra-tion on properties of mastic asphalt is a goal of this research work. Methodology. The mastic asphalt mixtures and asphalt concrete with conventional pavement bitumen 70/100 (penetration is 85 dmm) and high viscous bitumen (penetration is 38 dmm) are chosen for research. The mineral aggregates contain 42 % of crushed granite 5-10 mm, 33 % of granite screening and 33 % of limestone powder. The properties of mastic asphalts are evaluated with EN 12697-20:2003, SOU 42.1-37641918-106:2013 and DSTU EN 13108-6:2018. Results. It was found a significant influence of amount and viscosity of bitu-men and a temperature on workability of mastic as-phalt mixture and on properties of mastic asphalt concrete. Originality. The comparative analysis of workability of mastic asphalt mixture and properties of mastic asphalt concrete with bitumens differ in viscosity is a scientific originality of presented re-search. Practical value. Due to research results it is not reasonable to assign the temperature that sup-plies viscosity of 0.5 Pa•s as a temperature of mixing of mastic asphalt. The temperature conditions of mastic asphalt mixing are much higher (200 – 240 °C). To evaluate workability and find a minimal acceptable temperature of mixture it is possible to use the thickness of the mixture layer after spreading as an indicator. With this the acceptable workability of the mastic asphalt mixture can be characterized by thickness of its layer 30 mm or less after spreading.

scholarly journals Reutilization of Recycled Cellulose Diacetate From Discarded Cigarette Filters in Production of Stone Mastic Asphalt Mixtures

2021 ◽  
Vol 8 ◽  
Author(s):  
Huachen Liu ◽  
Yikun Chen ◽  
Yongjie Xue
Keyword(s):  
Asphalt Binder ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Asphalt Mixtures ◽  
Polyacrylonitrile Fiber ◽  
Cellulose Diacetate ◽  
Mastic Asphalt ◽  
Stone Mastic Asphalt ◽  
Infrared Spectrometer ◽  
Corrugated Structure

In this paper, recycled cellulose diacetate (rCDA) derived from cigarette butts was used as a fiber stabilizer to develop stone mastic asphalt (SMA) mixtures. The characterizations of rCDA were investigated by scanning electron microcopy (SEM), a Fourier transform infrared spectrometer (FTIR), and a thermogravimetric analyzer (TGA). Volumetric stability, temperature stability, moisture stability, and fatigue performance of SMA mixtures with rCDA were tested to obtain the pavement performance. Results showed that rCDA appeared to have a tough surface texture with a curly and corrugated structure, which facilitated the enhancement of the cohesion bond with the asphalt binder. TG-DTG indicated that the maximum weight loss (62.48%) obtained at temperatures ranging from 294.1°C to 376.0°C was due to decomposition and degradation of organic matters. When 0.4% rCDA was used in the asphalt mixture, the dynamic stability was 4,105 cycles/mm. The ultimate flexural strength and flexural stiffness modulus were 3,722 MPa and 9.7 MPa. It indicated that the temperature stability of 0.4% rCDA was superior to 0.3% polyacrylonitrile fiber (PAN), while inferior to 0.3% polyester (PET). The value of tensile strength ratio and residual Marshall stability were 80.2 and 75.3%, respectively. The fatigue life of 0.4% rCDA was technically like that of 0.3% PAN and 0.3% PET at lower stress levels. All results concluded that the optimum content of rCDA in asphalt mixtures was 0.4% by mass of the binder.

Effects of Mixture and Aggregate Type on Over-Compaction in Hot Mix Asphalt in Tennessee

2021 ◽  
pp. 036119812110615
Author(s):  
Pawel Polaczyk ◽  
Yuetan Ma ◽  
Wei Hu ◽  
Rui Xiao ◽  
Xi Jiang ◽  
...  
Keyword(s):  
Service Life ◽  
Hot Mix Asphalt ◽  
Asphalt Mixture ◽  
Aggregate Structure ◽  
Mixture Density ◽  
Coarse Aggregates ◽  
Mastic Asphalt ◽  
Stone Mastic Asphalt ◽  
Compaction Energy ◽  
The Moment

Correct compaction is vital for asphalt mixture service life. An adequately compacted mixture with inferior properties can achieve better performance than a mixture with excellent properties but poorly compacted. This study investigated resistance to damage caused by over-compaction by utilizing the locking point concept. Over-compaction might cause damage to the aggregate structure and decrease service life. The locking point is defined as the moment during mixture compaction at which an aggregate skeleton is developed and becomes stable. Beyond the locking point, more compaction energy does not significantly increase mixture density and can damage aggregate particles. A total of 15 mixtures was utilized and evaluated using the gyratory compactor. Among them, five dense-graded plant mixtures contained different aggregates and binders, and 10 laboratory mixtures (three types: the surface, the base, and stone mastic asphalt [SMA]) were designed with the most popular coarse aggregates in Tennessee: hard limestone, soft limestone, gravel, and granite. The results of this study show that the highest locking point was reached by the mixtures containing gravel. The SMA mixtures have, on average, lower locking points than the dense-graded mixtures. Most of the dense-graded mixtures made with crushed stones failed in the range of +20 to +30 gyrations, whereas the samples made with gravels failed in the range of +30 to +40 gyrations, indicating that gravel seems to be the most resistant to damage.

scholarly journals Effect of Addition of Rubber Granulate and Type of Modified Binder on the Viscoelastic Properties of Stone Mastic Asphalt Reducing Tire/Road Noise (SMA LA)

Materials ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 3446
Author(s):  
Wladyslaw Gardziejczyk ◽  
Andrzej Plewa ◽  
Raman Pakholak
Keyword(s):  
Viscoelastic Properties ◽  
Asphalt Mixture ◽  
Crumb Rubber ◽  
Low Noise ◽  
Asphalt Mixtures ◽  
Compression Tests ◽  
Road Noise ◽  
Stiffness Modulus ◽  
Mastic Asphalt ◽  
Stone Mastic Asphalt

The use of rubber granulate in the composition of asphalt mixtures, as well as the use of poroelastic layers, is indicated by many research centers as a factor with a positive effect on tire/road noise reduction. Attention is however paid to their lower structural durability compared to asphalt concrete (AC) or stone mastic asphalt (SMA). Stone mastic asphalt reducing tire/road noise (SMA LA) layers have also been recently used as low-noise road surfaces. The article presents the test results of viscoelastic properties of asphalt mixtures SMA8 LA, SMA8 LA containing 10%, 20%, and 30% of rubber granulate, with bitumen 50/70, bitumen 50/70 modified with styrene butadiene styrene (SBS) copolymer, crumb rubber, and mixtures with bitumen modified simultaneously with crumb rubber and SBS copolymer. The reference asphalt mixture was the porous asphalt (PA8). The presented results of water damage resistance, degradation resistance in the Cantabro abrasion loss test, stiffness modulus as a function of temperature and hysteresis loop proved that the amount of rubber granulate and the type of binder significantly affect the values of these parameters. Attention was paid to the possibility of using the results of uniaxial cyclic compression tests when determining the proportion of rubber granulate in SMA8 LA mixtures. Tests of hysteresis loops and stiffness modulus confirm much higher elasticity of SMA8 LA mixtures with rubber granulate as compared to mixtures without the addition of granulate.

scholarly journals The Influence of SBS, Viatop Premium and FRP on the Improvement of Stone Mastic Asphalt Performance

Fibers ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 20 ◽  
Author(s):  
Sepehr Saedi ◽  
Seref Oruc
Keyword(s):  
Asphalt Mixture ◽  
Fiber Reinforced Polymers ◽  
Modified Bitumen ◽  
Reinforced Polymers ◽  
Mastic Asphalt ◽  
Stone Mastic Asphalt ◽  
Asphalt Performance ◽  
Styrene Butadiene ◽  
High Temperature Sensitivity ◽  
Fiber Reinforce

The current study investigates the effects of Fiber Reinforce Polymer (FRP) additive on the performance of Stone Mastic Asphalt (SMA) mixtures with SBS and Viatop Premium additives. The asphalt mixture used in the current study included SBS (Styrene-Butadiene-Styrene) additive modified at the rate of 5% according to the necessary preliminary studies, and some SMA mixture modified by adding FRP (Fiber Reinforced Polymers) additive prepared in dimensions of 5 cm in different proportions (0.3%, 0.5%, 0.7% and 0.9%). The mechanical properties of the mixtures were investigated, and the findings revealed that the SMA mixture; prepared by adding FRP additive, SBS modified bitumen, and Viatop Premium additive; increased the rutting, aging resistance and elasticity of SMAs. Moreover, load spread ability and fatigue life revealed an increase, whereas high temperature sensitivity and tendency to crack at low temperatures decreased throughout the study. The FRP contribution rate that improves the performance characteristics of the SMA mixture to the highest level was found to be 0.7%.

scholarly journals The Influence of Zero Shear Viscosity of TLA-Modified Binder and Mastic Composition on the Permanent Deformation Resistance of Mastic Asphalt Mixture

Materials ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5167
Author(s):  
Krzysztof Kołodziej ◽  
Lesław Bichajło ◽  
Tomasz Siwowski
Keyword(s):  
Shear Viscosity ◽  
Permanent Deformation ◽  
Asphalt Mixture ◽  
Practical Experience ◽  
Deformation Resistance ◽  
Zero Shear Viscosity ◽  
Mastic Asphalt ◽  
Binder Ratio ◽  
Modified Binder ◽  
Two Parameters

Mastic asphalt (MA) has been particularly popular in recent years for bridge pavements due to many advantages such as easy application, good waterproofing properties, and high durability. However, the drawback of mastic asphalt in comparison to other asphalt mixtures is its lower resistance to permanent deformation. Trinidad Lake Asphalt (TLA) is often applied to make mastic asphalt resistant to permanent deformation. Practical experience demonstrates that serious failures may occur if MA pavement design and materials selection is not taken into account sufficiently. Therefore in this study, the influence of two parameters: zero shear viscosity (ZSV) of TLA-modified binder and mastic composition described by the filler–binder ratio, on the permanent deformation resistance of the MA mixture was evaluated. The primary purpose of determining the ZSV of the TLA-modified binders was to evaluate the rutting potential of the binders. The permanent deformation (rutting) resistance of the MA mixtures was evaluated based on static and dynamic indentation tests. The optimum content of TLA in the base bitumen and the optimum filler–binder ratio in the MA mixture were obtained based on multiple performance evaluations for modified binder, mastic and MA mixtures, i.e., 20% and 4.0, respectively.

scholarly journals RESEARCH OF BITUMINOUS BINDER WITH STABILIZING ADDITIVES BY INFRARED SPECTROSCOPY AND X-RAY SPECTRAL ANALYSIS

2020 ◽  
Vol 5 (11) ◽  
pp. 24-31
Author(s):  
D. Yastremskiy
Keyword(s):  
Spectral Analysis ◽  
Asphalt Concrete ◽  
Asphalt Mixture ◽  
Absorption Bands ◽  
Additional Absorption ◽  
X Ray ◽  
Mastic Asphalt ◽  
Petroleum Bitumen ◽  
Stone Mastic Asphalt ◽  
Sulfur Containing

Increasing the volume of crushed stone-mastic asphalt concrete used in the upper layers of road surfaces requires the development of effective stabilizing additives that ensure the uniformity of the asphalt mixture during short-term storage and transportation, as well as improving the properties of asphalt concrete. This additives include a complex stabilizing additive of the following composition: 90 % cellulose fibers from waste paper, 5 % rubber powder, 5 % viscous petroleum bitumen of the BND 90/130 brand. This article presents the results of a study of bitumen with the addition of "Viatop 66" and a complex cellulose-containing stabilizing additive (CSD). Using Fourier-transform spectroscopy, graphical data are obtained. as a result of their analysis, it is found that the interaction of stabilizing additives for crushed-mastic asphalt concrete with bitumen leads to the appearance of additional absorption bands characteristic of aromatic compounds (CH, benzene ring), sulfur-containing functional groups S=O st, R-SO-R, R-SO-OH, R-SO2-R, C=S st, as well as for C-O-H groups. X-ray spectral analysis confirmed the presence of additional sulfur-containing spectra in the composition of stabilizing additives. It is found that depending on the chemical composition of the stabilizing additives, the physical and mechanical characteristics of the bituminous binder and the resulting asphalt concrete change.

scholarly journals Effect of Palm Oil Clinker (POC) Aggregate on the Mechanical Properties of Stone Mastic Asphalt (SMA) Mixtures

2020 ◽  
Vol 12 (7) ◽  
pp. 2716
Author(s):  
Ali Babalghaith ◽  
Suhana Koting ◽  
Nor Sulong ◽  
Mohamed Karim ◽  
Syakirah Mohammed ◽  
...  
Keyword(s):  
Palm Oil ◽  
Asphalt Binder ◽  
Asphalt Mixture ◽  
Binder Content ◽  
Mix Design ◽  
Fine Aggregate ◽  
Mastic Asphalt ◽  
Fine Aggregates ◽  
Stone Mastic Asphalt ◽  
Aggregate Composition

Aggregate composition has a pivotal role in ensuring the quality of pavement materials. The use of waste materials to replace the aggregate composition of asphalt pavement leads to green, sustainable, and environmentally friendly construction, which ultimately preserves nature by reducing the need to harvest materials from natural sources. Using the Marshall mix design, the main objective of this paper is to investigate the effects of waste palm oil clinker (POC) as fine aggregates replacement on the properties of stone mastic asphalt (SMA) mixture. Six groups of asphalt mixtures were prepared using different percentages of palm oil clinker content (0%, 20%, 40%, 60%, 80%, and 100%). To determine the Marshall properties and select the optimum binder content, asphalt mixture samples with different percentages of asphalt binder content (5.0%, 5.5%, 6.0%, 6.5%, and 7.0%) were prepared for each group. The results showed that the palm oil clinker was appropriate for use as a fine aggregate replacement up to 100% in SMA mixture and could satisfy the mix design requirements in terms of Marshall stability, flow, quotient, and volumetric properties. However, the percentage of palm oil clinker replacement as fine aggregate has merely influenced the optimum binder content. Furthermore, there were improvements in the drain down, resilient modulus and indirect tensile fatigue performances of the SMA mixture. In conclusion, the use of POC as fine aggregates replacement in SMA mixture indicates a good potential to be commercialized in flexible pavement construction.

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