Case Study of a Composite Layer with Large-Stone Asphalt Mixture for Heavy-Traffic Highways

2020 ◽  
Vol 146 (1) ◽  
pp. 04019040 ◽  
Author(s):  
Zila M. G. Mascarenhas ◽  
Matheus S. Gaspar ◽  
Kamilla L. Vasconcelos ◽  
Liedi L. B. Bernucci ◽  
Amit Bhasin
Keyword(s):  
Heavy Traffic ◽  
Asphalt Mixture ◽  
Composite Layer ◽  
Large Stone

Coupled Numerical Analysis of Anti-crack Mechanism of Large Stone Asphalt Mixture

2010 ◽  
Vol 4 (2) ◽  
pp. 22-26
Author(s):  
Qingchang Lu ◽  
Jianmin Zi ◽  
Haijun Wang ◽  
Qiuxi Huang ◽  
Wei Wan
Keyword(s):  
Numerical Analysis ◽  
Asphalt Mixture ◽  
Large Stone

scholarly journals BAHAN TAMBAH SERAT ECENG GONDOK PADA LASTON TIPE XI TERHADAP INDEKS MARSHALL TEST MENGGUNAKAN KERIKIL MANTUP

UKaRsT ◽  
2018 ◽  
Vol 2 (2) ◽  
pp. 8
Author(s):  
Sugeng Dwi Hartantyo ◽  
Rasiyo Hepiyanto
Keyword(s):  
Asphalt Concrete ◽  
Water Hyacinth ◽  
Heavy Traffic ◽  
Asphalt Mixture ◽  
Cellulose Fiber ◽  
Fine Aggregate ◽  
Traffic Loads ◽  
Marshall Test ◽  
Technical Specifications

Laston is a mixture of coarse aggregate, fine aggregate, and filler with a binder under the temperature of 145-155oC with the composition being studied and regulated by technical specifications. Laston is also known as AC (Asphalt Concrete).Laston itself is commonly used in Indonesia with continuous gradations used for heavy traffic loads. To get the addictive material is not easy and the material is expensive. Therefore, it is necessary to find alternatives to the cellulose fiber. Water hyacinth is a water weed that once grow and develop, it has high cellulose fiber content, which is about 60%.For that, done a research to add a hot asphalt mixture material that aims to improve the quality of mixed result. The selected material is natural water hyacinth. The method used is trial and error with reference of SNI 03-1737-1989. Variations used are 3%, 5%, and 7% of the asphalt weight, asphalt level used Is 5.61%.The result of this study is Marshall evaluation where the greatest score obtained for stability is 1325 kg,  Flow is 3.73 mm, Quotient Marshall is 401.02 kg/mm, VMA is 66.30%, VFWA is 19.25%, and VIM score is 54.35 %. With this result, the asphalt mixture can not be used because the results of VMA, VFWA, and VIM have not been suitable on specification of SNI 03-1737-1989.  Keywords: Laston, Asphalt Concrete, Water Hyacinth, SNI 03-1737-1989.

scholarly journals PENGARUH PENAMBAHAN LIMBAH KARET BAN LUAR PADA LAPIS TIPIS ASPAL PASIR (LATASIR) TERHADAP KARAKTERISTIK MARSHALL

2018 ◽  
Vol 2 (2) ◽  
pp. 54
Author(s):  
Fakhrul Rozi Yamali
Keyword(s):  
Coarse Aggregate ◽  
Heavy Traffic ◽  
Asphalt Mixture ◽  
Fine Aggregate ◽  
A Value ◽  
Waste Rubber ◽  
Marshall Test ◽  
Local Roads ◽  
Technical Specifications

The mixture of asphalt sand or often called as LATASIR (a thin Layer of asphalt Sand) is often used on the streets as light as local roads or road environment, in order to restrain the rate of water so as not to enter into pores in it. This mixture consists only of fine aggregate or sand or a mixture of both, so of coarse aggregate is not found in its alloy, so have the resilience of the Groove (rutting) are low and cannot be used on roads with heavy traffic or the area slopes. To improve the quality of asphalt mixture Latasir then do the addition of waste tire rubber out of the motor. This research was conducted with the marshall test asphalt plan levels, with 7%, 8%, 9%, 10% and 11% in advance. After obtained the value levels of Optimum Asphalt (KAO), then do the test with the addition of marshall rubber tyres outside the motor of 1%, 2%, 3%, 4% and 5% against weight. The research results obtained a value of 9.8%, KAO then conducted testing of marshall by using a variation of the rubber tyres outside the motor changes characteristic of Marshall, the degree of suppleness and durability is better, but there is a cavity the air that many great VIM or value, so that the value of the VFA became small. From all levels of rubber in asphalt has a great degree of flexibility in rubber 3%, but that filled the whole terms of the 2010 revision 3 technical specifications on levels of 1.5% rubber.Keywords: Latasir Mixture, KAO, Waste Rubber Tyres Outside Motor, Marshall

scholarly journals Abrasion Resistance of Concrete with Crushed Sand

2020 ◽  
Vol 9 (2) ◽  
pp. 586-590
Keyword(s):  
Abrasion Resistance ◽  
Coarse Aggregate ◽  
Heavy Traffic ◽  
It Industry ◽  
Natural Sand ◽  
Aggregate Concrete ◽  
Ring Road ◽  
Construction Activity

The studies measure Abrasion Resistance of Concrete with Crushed Sand. Pune is developing in construction activity so Pune province was chosen as a case study. Due to increase in Automobile and IT Industry increases Infrastructure faculty in Pune. Increases concrete demands for construction of Infrastructure faculty such as Fly over, Metro rails & Ring road around Pune city. To Gratifications in the demand of concrete and to supply this concrete demand increase in demand of natural sand Construction activity of Infrastructure & heavy traffic in Pune. Natural sand are replace with Crushed Fine and Coarse Aggregate Concrete (CCA )

scholarly journals ANALYSIS OF THE IMPACT OF MAXIMUM VEHICLE LOAD AT THE AGE OF FLEXIBLE PAVEMENT (CASE STUDY OF THE ROAD SECTION OF HERA DILI TIMOR-LESTE

Neutron ◽  
2020 ◽  
Vol 19 (2) ◽  
pp. 51-61
Author(s):  
Junizia Elsa De Almeida ◽  
Koespiadi
Keyword(s):  
Service Life ◽  
Heavy Traffic ◽  
Heavy Vehicles ◽  
The Road ◽  
Goods And Services ◽  
Road Section ◽  
Calculation Results ◽  
Load Increase ◽  
The Impact

The road network is a land transportation infrastructure that plays an important role in the transportation sector, especially for the balance of the distribution of goods and services, both from other regions. In this study, an analysis was conducted to find out how the influence of heavy vehicle volume increase on the service life of the road, while the method used was Bina Marga, the study was conducted by taking a case study on the Hera road section until Dili. This research is expected to find out how the service life of the road if the volume of heavy vehicles continues to increase. If the% of heavy vehicles increases, the thickness of the required surface layer will also be even greater. When% of vehicles or carrying heavy traffic loads are increased, the thickness of the existing layer cannot meet, because the calculation results with% of heavy vehicles increase by 10%, surface thickness 17.2 cm / This will cause the service life of the road to decrease because it is confirmed that the road will be damaged before the service period ends due to excessive load increase in heavy vehicles.

scholarly journals Fracture Performance of a Large-Stone Asphalt Mixture Based on a Monotonic Tensile Overlay Test

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Jianhui Wei ◽  
Tao Fu ◽  
Junlin Liang
Keyword(s):  
Constitutive Model ◽  
Fracture Energy ◽  
Asphalt Mixture ◽  
Test Results ◽  
Large Stone ◽  
Loading Mode ◽  
Disturbed State Concept ◽  
Study Results ◽  
Fracture Performance ◽  
Base Course

A large-stone asphalt mixture (LSAM) is usually used as the base course of asphalt pavement to prevent the generation of cracks. However, there are few studies on the fracture performance and crack resistance of LSAMs. Under the monotonic tensile loading mode, the overlay test (OT) was explored to investigate the influence of different test factors on the cracking resistance and fracture performance. The study results indicated that a change in temperature and aging results in a variation in fractal dimension, the fracture energy of crack growth is higher than that of crack initiation, and fracture energy is increased to a certain extent by decreased temperature, an increased loading rate or increased aging. Finally, a constitutive model is established based on the disturbed state concept (DSC), and the proposed constitutive model is consistent with the test results.

Laboratory Investigation of an Alternative Permeability Indicator to Determine Optimal Maintenance Timing for Open-Graded Friction Course

2020 ◽  
Vol 2674 (4) ◽  
pp. 165-177
Author(s):  
Shenghua Wu ◽  
Li Liu ◽  
Gang Yao ◽  
Juan Zhang ◽  
Omar Tahri
Keyword(s):  
Heavy Traffic ◽  
Low Impact Development ◽  
Traffic Loading ◽  
Measuring Device ◽  
Open Graded Friction Course ◽  
Optimal Maintenance ◽  
Air Void ◽  
Relationship Of ◽  
The Relationship

Open-graded friction course (OGFC) is a low impact development practice that provides a better pavement drainage solution and safer driving conditions. However, there exists a gap in understanding how internal pores in OGFC mix affect hydraulic conductivity, particularly when OGFC suffers the most rutting damage under the effects of high temperature and heavy traffic loading. There is also a lack of research on determining the optimal maintenance timing for an OGFC pavement. This study aims at characterizing the relationship of volumetric and permeability properties for OGFC slab specimens and quantifying permeability deterioration over time using a developed precipitation simulator and permeability measuring device and rutting test. Seven test temperatures (40, 45, 50, 55, 60, 65, and 70°C) were considered in the rutting test. The effect of clogging material size on permeability was also evaluated. The test results suggested that interconnected air void was lower than total air void, and higher rutting temperature resulted in reduced interconnected air void. The clogging experiment suggested that 0.3–0.6 mm material caused the most clogging while 0.075–0.15 mm material caused the least clogging. Based on this study, it is recommended to use a field measured rut depth as an alternative permeability indicator for determining optimal maintenance timing for an OGFC pavement using the correlation established between permeability and rut depth. A case study of OGFC pavement demonstrated that when the field measured rut depth reached 4.5 mm or higher, timely maintenance is needed.

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