scholarly journals Permeability Measurement of Hot Mix Cold Laid Containing Asbuton as Porous Asphalt

2021 ◽  
Vol 921 (1) ◽  
pp. 012065
Author(s):  
M Tumpu ◽  
S Gusty ◽  
M W Tjaronge ◽  
H Parung
Keyword(s):  
Layer Structure ◽  
Coarse Fraction ◽  
Laboratory Method ◽  
Asphalt Mixtures ◽  
Porous Asphalt ◽  
The Road ◽  
Water Splash ◽  
Experimental Laboratory ◽  
On The Road ◽  
Test Objects

Abstract Porous asphalt is a pavement layer structure with aggregate gradations with a coarse fraction greater than 70-85% of the total weight of the mixture so that the resulting structure is more open and porous, which prevents water from stagnating on the road surface reduces water splash and makes the road less slippery. This study aims to analyze the permeability properties of a mixture of hot mix cold laid containing Asbuton in the form of porous asphalt. The research used was an experimental laboratory method. This study used Buton granular asphalt (Buton granular asphalt) with variations in BGA content of 4.5%, 5%, 5.5%, 6%, and 6.5%. The use of BGA is aimed at improving the performance of porous asphalt mixtures without using oiled asphalt. Manufacture of test objects through permeability tests. The results showed that the permeability value for the BGA content of 4.5% was 0.05 cm/s, the BGA content of 5% was 0.06 cm/s, the BGA content of 5.5% was 0.06 cm/s, the BGA content was 6%. is 0.03 cm/s and the BGA content of 6.5% is 0.02 cm/s.

Research on the Road Performance of the AC-25 Asphalt Mixtures

2012 ◽  
Vol 204-208 ◽  
pp. 1593-1598
Author(s):  
Hong Mei Li ◽  
Wen Fang Liu
Keyword(s):  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Asphalt Mixtures ◽  
Central Layer ◽  
The Road ◽  
Road Performance ◽  
On The Road

In this paper, firstly, based on asphalt pavement central layer, the comparison with the foreign related gradation of asphalt mixtures, one typical kinds of gradations are decided; Secondly, the asphalt aggregate ratio is predicted based on professor Lin’s Theory , and five asphalt aggregate ratio are selected. Finally, the road performance of asphalt mixture is experimented, and the road performance of five asphalt aggregate ratio is analyzed. As a result, we can predict the range of the optimum asphalt aggregate ratio based on the road performance.

scholarly journals Study of Improving Soil Using Permit, Corn Ash and Sodium Silicate

2021 ◽  
Vol 921 (1) ◽  
pp. 012042
Author(s):  
W Erwanto ◽  
R. R Parea. ◽  
A Ermitha.
Keyword(s):  
Bearing Capacity ◽  
Sodium Silicate ◽  
Soil Samples ◽  
Laboratory Methods ◽  
Palm Fiber ◽  
The Road ◽  
Soil Physical Characteristics ◽  
Stabilized Soil ◽  
Experimental Laboratory ◽  
On The Road

Abstract Soil that has low bearing capacity has a bad impact on the construction that is built on it as a result of which the building is easily damaged such as lifting the foundation on the building and causing cracks and shifting on the road. This research uses experimental laboratory methods. Soil samples used were taken from Lembang Tondon Siba’ta, Tondon District. Corn cobs were taken from Sa’dan Marante, Sodium silicate is obtained from chemical figures and palm fiber taken from Buntu Tagari and then tested for soil physical characteristics and soil bearing capacity in soil samples with a mixture of sodium silicate, corncob ash, palm fiber and soil without mixture. know the bearing capacity of the soil. The results of the research on stabilized soil by adding 0.2% palm fiber, 2% corncob ash and 3% sodium silicate obtained an increase in soil bearing capacity of 9.73% from the original soil and the addition of 0.2% palm fiber, 4% corncob ash and 3% sodium silicate.

scholarly journals Analysis of the costs of construction and maintenance of rigid and flexible pavements

2018 ◽  
Vol 2018 (11) ◽  
pp. 31-42
Author(s):  
Antoni Szydło ◽  
Piotr Mackiewicz
Keyword(s):  
Road Network ◽  
Price Level ◽  
Asphalt Mixtures ◽  
Cost Assessment ◽  
Concrete Pavements ◽  
Cement Concrete ◽  
The Road ◽  
The Subject ◽  
On The Road ◽  
The Cost

The costs of construction and the future maintenance of expressways and motorways have a significant impact on the choice of technologies for their construction. The subject of the article is the analysis of the costs of construction and maintenance of rigid (concrete) and flexible (asphalt mixtures) pavements in Poland. The construction technologies and maintenance scenarios in service were analysed for selected pavement constructions of rigid and flexible motorways and expressways. The costs of construction and maintenance of these pavements in national conditions were determined. The fourth quarter of 2015 was adopted as the initial price level. On the basis of the analysis of the costs of construction and maintenance of the analysed structures, the advantage of rigid constructions made of cement concrete was demonstrated, especially in the aspect of the surface maintenance. The cost assessment was carried out for 30 years of exploitation. The concrete pavements on the road network in Poland have been used for over 20 years. They are present both on low-class roads and on the highest-class roads, i.e. motorways and expressways.

Durability of Composites Based on Asphalt

2015 ◽  
Vol 796 ◽  
pp. 25-33
Author(s):  
Petr Mondschein ◽  
Adam Konvalinka ◽  
Pavel Svoboda
Keyword(s):  
Cement Composite ◽  
Flexible Pavement ◽  
Delay Condition ◽  
Asphalt Mixtures ◽  
Traffic Load ◽  
Cover Layer ◽  
The Road ◽  
On The Road ◽  
Whole Life Cycle ◽  
Repair Cycle

High traffic load and high temperatures are two crucial aspects, which cause together with static treatment of transport, respectively slow traffic, permanent deformations in the construction of flexible pavement (the cover layer of asphalt). Standard asphalt adjustments are not able to withstand such loads. For these reasons they are looking at ways to increase the functionality of asphalt mixtures and extend their lifespan, respectively delay condition, where it is not possible to use it comfortably. On the road is necessary to look at the whole life cycle and give priority in justified cases to demanding investment solutions, which thanks to longer durability and longer repair cycle will be cheaper. Such solutions are composite materials based on asphalt. Among them are technology of asphalt and cement composite (ACC), which uses strengths of both used materials, or by analogy with the principle of concrete reinforcement in asphalt mixtures. This article presents the characteristics of both technologies, their properties and points to the longer life of the construction of roads in their application.

scholarly journals Improve the Marshall stability of porous asphalt pavement with HDPE addition

2019 ◽  
Vol 276 ◽  
pp. 03005
Author(s):  
Elsa Eka Putri ◽  
Oliensia Vasilsa
Keyword(s):  
Asphalt Pavement ◽  
Asphalt Binder ◽  
Good Choice ◽  
Annual Rainfall ◽  
Porous Asphalt ◽  
The Road ◽  
Maximum Stability ◽  
Asphalt Content ◽  
On The Road ◽  
Marshall Stability

Porous asphalt is a gap graded pavement that is 20% air voids which enables rainwater that falls on the road surface to flow through the pavement and into drainage on the side of the road. Porous asphalt has a high shear resistance and dries quickly but its stability is low, it is costly to maintain and needs replacing after only a short time. Despite these disadvantages, porous asphalt is still a good choice in area that experiences heavy annual rainfall. High Density Polyethylene (HDPE), an opaque plastic, is harder and stronger than porous asphalt with a tensile strength of 3100-5500 psi. It is resistant to high temperatures. This study aims to investigate the effect of various percentages of HDPE as an additive to produce an HDPE Asphalt Binder for porous asphalt pavement. Marshall parameters were determined based on the AAPA 2004 standard. It was found that 4% HDPE achieved a maximum stability value of 870 kg at the optimum asphalt content for porous asphalt pavement was 5.54%. Stability of porous asphalt pavement with optimum asphalt content value was 61.1% higher after the addition of HDPE. Thus, the use of HDPE as an additive in Asphalt Binder was able to increase the binding strength of the asphalt minimising the disadvantages of the low stability of traditional porous asphalt pavement.

scholarly journals Influences of polymer modifiers on Porous Hot Asphalt Mixture Property and Durability

2020 ◽  
Vol 10 (2) ◽  
pp. 126-131
Author(s):  
Mohammed Q. Ali ◽  
Ganjeena J. Khoshnaw
Keyword(s):  
Design Method ◽  
Asphalt Mixture ◽  
Fine Aggregate ◽  
Infrastructure Development ◽  
Permeable Pavement ◽  
The Road ◽  
Water Splash ◽  
Open Structures ◽  
On The Road ◽  
The Impact

Fundamentally, sustainability and cost-effectiveness in infrastructure development have received widespread attention. Permeable pavement is such a concept that it is sustainable in the field of transportation and is being tested. Fully permeable pavement is a modern design method in which each layer is porous and can store water, avoiding the impact of stormwater on the pavement to avoid stormwater, skidding, floods, and water splash on the road and parking area which decrease safety rate. Porous asphalt (PA) is an asphalt mixture with a little or no fine aggregate. Due to open structures and advantages are used as a drainage layer in highway pavements in reducing noise and decreasing safety hazards during rainfall. Besides, it reduces splash and spray effects and thus increases the visibility. The main aim of this study is to analyze the influence of two asphalt modifier types: Styrene butadiene styrene (SBS) and propylene modifier polypropylene (PP), on porous hot asphalt mixture performance. The PA evaluation influence findings are based on permeability, durability, and Marshall stability-flow for hot asphalt mixture. The test results emphasize the modifier usage in reducing the abrasion loss and increasing the stability with enhancing the durability of PA. PA mixture binder prepared with 4% SBS and 4% PP modifier was the most polymer binder in modifying the abrasion resistance and stability of mixture in pavements.

scholarly journals Evaluation of Vegetation Configuration Models for Managing Particulate Matter along the Urban Street Environment

Forests ◽  
2022 ◽  
Vol 13 (1) ◽  
pp. 46
Author(s):  
Na-Ra Jeong ◽  
Seung-Won Han ◽  
Jeong-Hee Kim
Keyword(s):  
Particulate Matter ◽  
Green Infrastructure ◽  
Road Traffic ◽  
Layer Structure ◽  
Single Layer ◽  
Air Pollution Control ◽  
Urban Street ◽  
The Road ◽  
On The Road ◽  
Barrier Trees

As a green infrastructure component, urban street vegetation is increasingly being utilized to mitigate air pollution, control microclimates, and provide aesthetic and ecological benefits. This study investigated the effect of vegetation configurations on particulate matter (PM) flows for pedestrians in road traffic environments via a computation fluid dynamics analysis based on the road width (four and eight-lane) and vegetation configuration (single-, multi-layer planting, and vegetation barrier). Airflow changes due to vegetation influenced PM inflow into the sidewalk. Vegetation between roadways and sidewalks were effective at reducing PM concentrations. Compared to single-layer planting (trees only), planting structures capable of separating sidewalk and roadway airflows, such as a multi-layer planting vegetation barrier (trees and shrubs), were more effective at minimizing PM on the sidewalk; for wider roads, a multi-layer structure was the most effective. Furthermore, along a four-lane road, the appropriate vegetation volume and width for reducing PM based on the breathing height (1.5 m) were 0.6 m3 and 0.4 m, respectively. The appropriate vegetation volume and width around eight-lane roads, were 1.2–1.4 m3 and 0.8–0.93 m, respectively. The results of this study can provide appropriate standards for street vegetation design to reduce PM concentrations along sidewalks.

scholarly journals IMPACT OF MODIFICATED ASPHALT MIXTURES ON PAVING FUNCTIONING AND ENVIRONMENT / MODIFIKUOTŲ ASFALTBETONIO MIŠINIŲ POVEIKIS DANGOS FUKNCIONAVIMUI IR APLINKAI

2016 ◽  
Vol 8 (4) ◽  
pp. 418-424
Author(s):  
Gediminas Gribulis ◽  
Donatas Čygas ◽  
Audrius Vaitkus
Keyword(s):  
Carbon Dioxide ◽  
Industrial Development ◽  
Asphalt Mixtures ◽  
Asphalt Mixes ◽  
The Road ◽  
Advantages And Disadvantages ◽  
The World ◽  
Asphalt Mix ◽  
On The Road ◽  
Road Paving

Atmospheric pollution began to increase in the beginning of 19th century, when the global economy and industrial development started the signal grow. The current problem of global warming is partly related with emission of carbon dioxide (CO2) to environment, which one of the sources are industrial production companies. Warm asphalt mix is usually used in the practice of Lithuania and the world for equipment of road paving. These mixes are produced in specialized asphalt mixers where stone dosing, drying and its mixing with bituminous binders are performed. The temperature of produced hot asphalt mix in mixer reach 150–180 °C and 120–160 °C of mixture laying on the road. Various pollutants, carbon dioxide, formaldehydes, and other are spread to the environment. The carried out researches in Lithuania and the world have showed that while using special additives it is possible to reduce the temperatures of warm asphalt production and laying on the road. Such reduction of temperature helps not to worsen the quality of asphalt layer, to lower the emission of pollutants to environment, to improve the conditions of road workers and to economically use the gas for production of asphalt mixes. Production technologies of different asphalt mixes, their advantages and disadvantages, and results of laboratory tests are analyzed in this article. Equipment samples of experimental road sections, using the warm mixing asphalt mixtures are given. 19 amžiaus pradžioje, ėmus sparčiai augti pasaulinei ekonomikai ir vystytis pramonei, pradėjo didėti ir atmosferos užterštumas. Dabartinė globalinė pasaulinio atšilimo problema iš dalies siejama su anglies dioksido (CO2) išmetimu į aplinką, kurio vienas iš šaltinių yra pramoninės gamybos įmonės. Automobilių kelių dangoms įrengti Lietuvos ir pasaulinėje praktikoje dažniausiai naudojami karšto asfalto mišiniai. Šie mišiniai yra gaminami specialiuose asfalto maišytuvuose, kuriuose akmens medžiagos dozuojamos, džiovinamos, maišomos su bituminiais rišikliais. Gaminamo karšto asfalto mišinio temperatūra maišytuve siekia 150–180 oC, o kelyje klojamo – 120–160 oC. Šių procesų metu į aplinką paskleidžiama įvairių teršalų: anglies dioksido, formaldehidų ir kt. Pasaulyje ir Lietuvoje atlikti moksliniai tyrimai parodė, kad naudojant specialius priedus galima sumažinti karštų asfalto mišinių gamybos bei klojimo kelyje temperatūrą. Toks temperatūros sumažinimas leidžia nepabloginti asfalto dangų kokybės, sumažinti teršalų išmetimą į aplinką, pagerinti kelyje dirbančių darbuotojų darbo sąlygas, ekonomiškiau naudoti asfalto mišinių gamybai reikalingas dujas. Šiame straipsnyje analizuojamos skirtingų asfalto mišinių gamybos technologijos, jų privalumai ir trūkumai, laboratorinių bandymų rezultatai. Pateikiami eksperimentinių kelių ruožų įrengimo pavyzdžiai, naudojant šiltojo maišymo asfalto mišinius.

scholarly journals The Volumetric Analysis of Porous Mixture Containing Modified Plastic Waste

2021 ◽  
Vol 921 (1) ◽  
pp. 012075
Author(s):  
E Aprianti ◽  
D Runtulalo ◽  
A M H Zaifullah
Keyword(s):  
Asphalt Mixture ◽  
Volumetric Analysis ◽  
Plastic Waste ◽  
Road Surface ◽  
Total Weight ◽  
Road Engineering ◽  
Porous Asphalt ◽  
The Road ◽  
On The Road ◽  
Made In

Abstract Porous Asphalt mixture is an asphalt mixture that uses open graded which has a functions as a drainage so that rainwater will not generate aqua planning on the road surface. The purpose of this study was to analyse the volumetric of modified asbuton with plastic waste and with no plastic waste of a mixture of porous asphalt. In this study we used asphalt porous specimens with dimensions of 10 cm in diameter and 8 cm in height. The specimens were made in 3 variations: 0% plastic, 0.5% 1.0% plastic with 9 specimens. This study uses PET (Polyethylene Terephlate) and laboratory experimental-based, where the gradation of porous asphalt mixture refers to the specifications of the Road Engineering Association of Malaysia (2008). The results of this study describe that there was an increase in VIM value due to the addition of PET plastic waste which is plastic is a replacement of aggregate total weight.

scholarly journals Superhydrophobic Asphalt Pavements: Surface Improvement

2020 ◽  
Vol 238 ◽  
pp. 12012
Author(s):  
Iran Rocha Segundo ◽  
Salmon Landi ◽  
Elisabete Freitas ◽  
Verônica Castelo Branco ◽  
Manuel F. M. Costa ◽  
...  
Keyword(s):  
Research Work ◽  
Weather Condition ◽  
Asphalt Mixtures ◽  
Asphalt Pavements ◽  
Water Contact ◽  
The Road ◽  
Adverse Weather Condition ◽  
Adverse Weather ◽  
Water Drops ◽  
On The Road

The most adverse weather condition for road safety happens when there is water, snow, or ice on the road surface because their presence highly decreases friction. Therefore, it is essential to drain or repel them quickly. If the water drops are repelled from the surface or the ice/snow formation is avoided with the application of superhydrophobic coatings, roads become safer. In order to functionalize the asphalt mixtures used in road pavements, nano/micromaterials, such as Polytetrafluoroethylene (PTFE), TiO2, and SiO2, among others have been applied by spraying coating. The mixes are usually characterized by the water contact angle, and the surface roughness is typically assessed by optical and electron analysis. This research work aims to present a brief overview of superhydrophobic asphalt mixtures.

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