scholarly journals Influence of Marble Dust Filler on Marshal Properties of Hot Mix Asphalt

2021 ◽  
Vol 9 (9) ◽  
pp. 640-647
Author(s):  
Mohsin Raza
Keyword(s):  
Asphalt Concrete ◽  
Permanent Deformation ◽  
Developed Countries ◽  
Strength Properties ◽  
Vital Role ◽  
Binder Content ◽  
Modified Asphalt ◽  
Stone Dust ◽  
Marble Dust ◽  
Limestone Dust

Abstract: Literature review reveals that mineral fillers play a vital role in altering the properties of asphalt concrete. Despite filler being a small part of asphalt, has a predominant effect on the performance characteristics of asphalt concrete. Millions tons of marble waste is being generated by marble processing industries, leading to environmental pollution and loss of valuable land. Developed countries have strict policies for waste disposal whereas in developing countries there are almost no policies. Hence, in this research, an effort has been made to evaluate the influence of marble dust on the strength properties and permanent deformation resistance of asphalt concrete. For this purpose optimum binder content has been determined by using 5.5% conventional limestone dust filler and after determination of optimum binder content, stone dust has been replaced with marble dust in increments of twenty five percent (i.e 0%, 25%, 50%, 75%, 100% ). The results of the tests performed on marble dust modified asphalt revealed that marble dust modified asphalt containing 50% marble dust have shown improvement in Marshal Stability and Flow values. Incorporation of marble dust up to 25% and 50% has resulted in better volumetric properties in comparison with stone dust made mixes. Keeping in view the improvement in properties of asphalt concrete in connection with marble dust, the utilization of freely available marble dust in asphalt concrete will have a marked impact in reducing the cost of asphalt concrete as well as minimizing the environmental problems due to disposal of waste marble dust. Keywords: Asphalt Concrete, Marble Dust, Limestone dust, Marshal Stability and Flow

Effect of Filler Type on the Durability of Asphalt Concrete Mixes

2018 ◽  
Vol 8 (3) ◽  
Author(s):  
Ahmed M. Mohammed ◽  
Aqeel T. Fadhil
Keyword(s):  
Portland Cement ◽  
Asphalt Concrete ◽  
Design Method ◽  
Hydrated Lime ◽  
Moisture Damage ◽  
Mineral Filler ◽  
Stone Dust ◽  
Limestone Dust ◽  
Asphalt Concrete Pavement ◽  
Lime Stone

Mineral filler is the finest fraction of aggregate (smaller than 75 gm) used in the production of asphalt paving mixed. It is essential for producing a mixture that is dense, cohesive, durable, and resistant to water penetration. In spite of the fact that filler is very small proportion of the total aggregates in the mix, due to its rather high affinity for asphalt, the changes in the type of the filler can cause the paving mixture to perform satisfactorily during the design life or deteriorate rapidly under the effect of traffic and environmental impact. The objective of this study is to investigate the effect of mineral filler types (three types, limestone dust, Portland cement and hydrated lime) in the durability of asphalt concrete mixture. To achieve the objective of this study, Marshall mix design method was utilized to produce asphalt concrete mixes at their optimum asphalt content. The mixes were, then, tested to investigate their durability properties including moisture damage and fatigue characteristics. The results indicated that the mixes prepared with hydrated lime have superior resistance to moisture damage in comparison with Portland cement and lime stone dust. On the other hand, the mixes prepared with Portland cement type of filler showed better resistance to the fatigue failure of asphalt concrete pavement.

scholarly journals Application of Sawdust Ash as Filler Material in Asphaltic Concrete Production

2020 ◽  
Vol 16 (2) ◽  
pp. 351-359
Author(s):  
Basha Fayissa ◽  
Oluma Gudina ◽  
Biruk Yigezu
Keyword(s):  
Asphalt Concrete ◽  
Variable Temperature ◽  
Permanent Deformation ◽  
Filler Material ◽  
Asphaltic Concrete ◽  
Stone Dust ◽  
Concrete Production ◽  
Strength And Deformation ◽  
Agricultural Areas ◽  
Physical And Chemical

AbstractAn increase production of wastes from different companies and agricultural areas creates severe surrounding trouble in terms of management and removal in Ethiopia. Utilization of by-products and residue in construction work is an excellent alternative solution in reducing disposal problems. In this research, the application of sawdust ash in asphalt concrete production is investigated as filler material. Physical and chemical tests were investigated for Saw Dust Ash (SDA). Asphalt specimen prepared using basaltic stone dust without sawdust as filler used as a control material. The SDA was partially replaced with 3 %, 6 %, 9 %, and 12 % by amount of basaltic dust. Performance evaluation of combinations was explored with fatigue, tensile strength, and deformation resistances experiment. The outcome pointed that the use of SDA as packing material enhanced the fatigue life and permanent deformation of asphalt concrete with variable temperature. Furthermore, it was identified that the combination with SDA indicated less sensitive to moisture than basaltic dust. Research finding indicated, an optimum value of SDA could be replaced the basaltic dust is 12 % in asphaltic concrete production.

Performance Evaluation of Plant Produced Warm Mix Asphalt

2018 ◽  
Vol 24 (5) ◽  
pp. 145 ◽  
Author(s):  
Amjad H. Albayati
Keyword(s):  
Portland Cement ◽  
Asphalt Concrete ◽  
New Technology ◽  
Permanent Deformation ◽  
Performance Testing ◽  
Hydrated Lime ◽  
Warm Mix Asphalt ◽  
Load Test ◽  
Concrete Mixtures ◽  
Limestone Dust

Warm mix asphalt (WMA) is relatively a new technology which enables the production and compaction of asphalt concrete mixtures at temperatures 15-40 °C lower than that of traditional hot mix asphalt HMA. In the present work, six asphalt concrete mixtures were produced in the mix plant (1 ton each) in six different batches. Half of these mixes were WMA and the other half were HMA.  Three types of fillers (limestone dust, Portland cement and hydrated lime) were used for each type of mix. Samples were then taken from these patches and transferred to lab for performance testing which includes: Marshall characteristics, moisture susceptibility (indirect tension test), resilient modulus, permanent deformation (axial repeated load test) and fatigue characteristics (third point flexural beam test). The obtained results indicated that the performance of WMA is enhanced when using the hydrated lime as filler in comparison with the limestone dust and Portland cement fillers. Better fatigue life was obtained for WMA using hydrated lime filler in comparison with HMA. Regardless the filler type, the Marshall properties of WMA satisfy the requirement of local specification, other properties of WMA were relatively lower than the HMA.  

scholarly journals The Use of Polyethylene Terephthalate Waste for Modifying Asphalt Concrete Using the Marshall Test

2019 ◽  
Vol 27 (2) ◽  
pp. 9-15 ◽  
Author(s):  
Olumide Moses Ogundipe
Keyword(s):  
Polyethylene Terephthalate ◽  
Fatigue Resistance ◽  
Asphalt Concrete ◽  
Permanent Deformation ◽  
Pet Waste ◽  
Modified Asphalt ◽  
Marshall Test ◽  
Bitumen Content ◽  
Maximum Stability ◽  
The Stability

AbstractThis study considers the use of polyethylene terephthalate (PET) waste for modifying asphalt concrete. In the study, the optimum bitumen content of asphalt concrete was replaced with 4%, 6%, 8%, 10%, 12%, 14% and 16% of PET waste; the Marshall test was conducted on the samples. A comparison of the unmodified and PET-modified asphalt concrete showed that the stability of the modified asphalt concrete was reduced. The maximum stability for the PET waste-modified asphalt concrete was recorded at a content of 12% PET waste. This gives about a 20.4% reduction in stability. The study reveals that the addition of PET waste to the asphalt concrete causes a reduction in the flow value except with the addition of 14% and 16 % waste. This implies that the introduction of PET waste could improve the permanent deformation resistance of asphalt, although there is concern about a reduction in fatigue resistance.

scholarly journals Performance Characteristics of Fiber Modified Asphalt Concrete Mixes

2014 ◽  
Vol 15 (1) ◽  
pp. 38-50 ◽  
Author(s):  
Manoj Shukla ◽  
Devesh Tiwari ◽  
K. Sitaramanjaneyulu
Keyword(s):  
Tensile Strength ◽  
Asphalt Concrete ◽  
Permanent Deformation ◽  
Asphalt Binder ◽  
Material Strength ◽  
Test Results ◽  
Modified Asphalt ◽  
Asphalt Mix ◽  
Indirect Tensile ◽  
Fatigue Characteristics

ABSTRACT Asphalt binder modification is one of the approaches taken to improve pavement performance. In addition it may also be improved through the addition of fibers to Asphalt mix that enhances material strength and fatigue characteristics while adding ductility. Due to their inherent compatibility with Asphalt concrete and excellent mechanical properties, fibers offer an excellent potential for modification of Asphalt concrete mix. To investigate the behavior of Fiber Modified Asphalt Concrete Mixes (FMACM), a preliminary study has been done to determine the feasibility of modifying the behavior of a Asphalt Concrete (AC) mixture through the use of Glass fiber and Polyester fiber. The purpose of this study was to identify and understand the factor that is responsible for improving the behavior of FMACM. Asphalt concrete samples were prepared and tested in the laboratory to evaluate the various mixture characteristics. The conclusions drawn from the study on testing of fiber-modified mixes are that fiber modified Asphalt mixtures have shown increased stiffness and resistance to permanent deformation. Fatigue characteristics of the mixtures were also improved. Fibers used in the study were of high tensile strength therefore test results of FMACM have shown higher indirect tensile strength and improved skid resistance for paving applications.

Investigation of Creep Mechanics Properties of Layered Nano-Montmorillonite Modified Asphalt Mixtures

2011 ◽  
Vol 467-469 ◽  
pp. 1541-1545 ◽  
Author(s):  
Tian Gui Liu ◽  
Shao Peng Wu ◽  
Jun Han
Keyword(s):  
Elastic Property ◽  
Asphalt Concrete ◽  
Permanent Deformation ◽  
Asphalt Binder ◽  
Testing Machine ◽  
Asphalt Mixture ◽  
Layered Silicate ◽  
Asphalt Mixtures ◽  
Modified Bitumen ◽  
Modified Asphalt

Montmorillonite（MMT）is a typical layered silicate. It has been widely used to modify polymers. It improves the thermal, mechanical and aging properties of polymers. The prominent features of MMT modified asphalt concrete are significant for prolonging the service life of asphalt pavement. The profound researches on the service performance and mechanical characteristics of MMT modified asphalt binder and mixtures are important for the application of MMT modified asphalt concrete in practice projects. The effect of MMT on the creep properties of asphalt mixture has been investigated in the research. The result showed that the physical capabilities of MMT modified bitumen was improved evidently. UTM 25 electro-hydraulic servo-universal testing machine was used to do Creep Text, and proper rheological models are employed to describe such characteristics. Results indicated that the visco-elastic properties of the mixtures can be changed by the use of MMT. The revised Burgers model is suitable for the visco-elastic property research of MMT modified asphalt mixtures. The model demonstrated that the retardant visco-elastic property and viscous property of asphalt mixtures containing MMT can be improved, which result in the enhancement of resistance to permanent deformation for MMT modified asphalt mixtures.

scholarly journals Evaluation of Properties and Micro-Characteristics of Waste Polyurethane/Styrene-Butadiene-Styrene Composite Modified Asphalt

Polymers ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 2249
Author(s):  
Bei Chen ◽  
Fuqiang Dong ◽  
Xin Yu ◽  
Changjiang Zheng
Keyword(s):  
Low Temperature ◽  
Performance Test ◽  
Permanent Deformation ◽  
Modified Asphalt ◽  
Basic Performance ◽  
Styrene Butadiene Styrene ◽  
Styrene Butadiene ◽  
Sbs Modified Asphalt ◽  
And Storage ◽  
Butadiene Styrene

In order to solve the problems caused by asphalt diseases and prolong the life cycle of asphalt pavement, many studies on the properties of modified asphalt have been conducted, especially polyurethane (PU) modified asphalt. This study is to replace part of the styrene-butadiene-styrene (SBS) modifier with waste polyurethane (WP), for preparing WP/SBS composite modified asphalt, as well as exploring its properties and microstructure. On this basis, this paper studied the basic performance of WP/SBS composite modified asphalt with a conventional performance test, to analyze the high- and low-temperature rheological properties, permanent deformation resistance and storage stability of WP/SBS composite modified asphalt by dynamic shear rheometer (DSR) and bending beam rheometer (BBR) tests. The microstructure of WP/SBS composite modified asphalt was also observed by fluorescence microscope (FM) and Fourier transform infrared spectroscopy (FTIR), as well as the reaction between WP and asphalt. According to the results of this study, WP can replace SBS as a modifier to prepare WP/SBS composite modified asphalt with good low-temperature resistance, whose high-temperature performance will be lower than that of SBS modified asphalt. After comprehensive consideration, 4% SBS content and 15% WPU content (4 S/15 W) are determined as the suitable types of WPU/SBS composite modified asphalt.

scholarly journals Study of High-Temperature Properties of Asphalt Mixtures Used for Bridge Pavement with Concrete Deck

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4238
Author(s):  
Piotr Pokorski ◽  
Piotr Radziszewski ◽  
Michał Sarnowski
Keyword(s):  
Permanent Deformation ◽  
Asphalt Mixture ◽  
Binder Content ◽  
Void Content ◽  
Concrete Bridge ◽  
Asphalt Mixes ◽  
Protective Layers ◽  
Concrete Bridge Decks ◽  
Air Void ◽  
Air Void Content

The paper presents the issue of resistance to permanent deformations of bridge pavements placed upon concrete bridge decks. In Europe, bridge asphalt pavement usually consists of a wearing course and a protective layer, which are placed over the insulation (waterproofing). Protective layers of bridge pavement are commonly constructed using low air void content asphalt mixes as this provides the suitable tightness of such layers. Due to increased binder content, asphalt mixes for bridge pavement may have reduced resistance to permanent deformations. The article presents test results of resistance to permanent deformations of asphalt mixes for the protective layers. In order to determine the composition of mixtures with low air void content and resistance to permanent deformation, an experimental design was applied using a new concept of asphalt mix composition. Twenty-seven different asphalt mixture compositions were analyzed. The mixtures varied in terms of binder content, sand content and grit ratio. Resistance to permanent deformation was tested using the laboratory uniaxial cyclic compression method (dynamic load creep). On the basis of experimental results and statistical analysis, the functions of asphalt mixture permanent deformation resistance were established. This enabled a determination of suitable mixture compositions for protective layers for concrete bridge decks.

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