scholarly journals Evaluation of Siltation Degree of Permeable Asphalt Pavement and Detection of Noise Reduction Degree

2020 ◽  
Vol 11 (1) ◽  
pp. 349
Author(s):  
Shuang Chen ◽  
Xuechun Lin ◽  
Chuanfeng Zheng ◽  
Xuedong Guo ◽  
Wuxing Chen
Keyword(s):  
Particle Size ◽  
Noise Reduction ◽  
Asphalt Concrete ◽  
Asphalt Mixture ◽  
Asphalt Pavements ◽  
Test Machine ◽  
Road Noise ◽  
The Road ◽  
Before And After ◽  
Sludge Particle

This study mainly uses PFC (particle follow code) to simulate the void characteristics of permeable asphalt mixture, and uses these to simulate the silting process. Then, a tire drop test was used to evaluate the noise reduction performance of permeable asphalt concrete. Finally, a self-made ring rutting test machine was used to simulate the silting process. Through experiments, the following conclusions were obtained: 1. The critical size of the sludge particle size is 0.3 mm–0.6 mm. 2. The quality of the water-permeable asphalt concrete specimens increased by 13% before and after silting, and the porosity of the specimens finally decreased from about 20% to about 8%. The water-permeable function only retained less than 20% of the original, and the water-permeable function was basically lost. 3. By measuring the road noise detection, it was found that the road noise is directly proportional to the degree of blockage of the permeable road. Compared with the original road with a perfect permeable function, the road noise of the completely blocked road increased by about 4 decibels. This study reveals the silting process of permeable asphalt mixture and the key particle size of the silt, which is of great significance for the detection, cleaning and maintenance of permeable asphalt pavements.

scholarly journals Research and Analysis on the Principle in Plant Cold Recycling for Foamed Bitumen and Mixture Performance

2021 ◽  
Vol 4 (6) ◽  
Author(s):  
Zecheng Ni ◽  
Shijing Chen ◽  
Yihuan Li ◽  
Hongxi Peng ◽  
Jiawen Liang ◽  
...  
Keyword(s):  
Asphalt Concrete ◽  
Asphalt Pavement ◽  
External Factors ◽  
Asphalt Pavements ◽  
Huge Amount ◽  
Construction Waste ◽  
The Road ◽  
Road Performance ◽  
Foamed Bitumen ◽  
Cold Recycling

The early asphalt pavement in our country severely reduced the road performance due to various external factors during the use process. According to incomplete statistics, there are more asphalt pavements that need to be renovated and repaired every year in China, and the amount of construction waste such as asphalt concrete and other construction waste reaches 1,000. About ten thousand tons. If such a huge amount of construction waste is not used, it will inevitably cause great pollution to the environment. If it can be reused, not only will it be environmentally friendly and energy-saving, it will also save more than one billion yuan in costs. In view of the above problems, this article conducts related Research and Analysis on the Principle in Plant Cold Recycling for Foamed Bitumen and Mixture Performance to provide reference for future projects.

Optimized Asphalt Mixtures for Noise Reduction in Lithuanian Roads

2014 ◽  
Vol 614 ◽  
pp. 618-621
Author(s):  
Audrius Vaitkus ◽  
Tadas Andriejauskas ◽  
Laura Čygaitė ◽  
Jurgita Židanavičiūtė
Keyword(s):  
Noise Reduction ◽  
Noise Pollution ◽  
Low Noise ◽  
Asphalt Pavements ◽  
Noise Levels ◽  
Road Noise ◽  
Negative Effects ◽  
Development Experience ◽  
Growing Economy ◽  
Generation Mechanisms

In the world of growing economy and population, the need of transportation is rapidly increasing also raising problems of noise pollution. Environmental noise levels are increasing in parallel with increasing traffic flows resulting negative effects for society, wildlife and economy. The article gives an overview about the main transport noise source tyre/road noise, its generation mechanisms and influencing factors. One of the most effective and promising tyre/road noise solutions is low noise pavements, which has different noise reduction approaches. Low noise asphalt pavements and theoretical noise reduction principles are analysed in the paper as well as the development experience of particular low noise asphalt pavements for Lithuanian conditions.

scholarly journals THE BITUMEN BATCHING SYSTEM'S MODERNIZATION AND ITS EFFECTIVE ANALYSIS AT THE ASPHALT MIXING PLANT

Transport ◽  
2010 ◽  
Vol 25 (3) ◽  
pp. 325-335 ◽  
Author(s):  
Justas Bražiūnas ◽  
Henrikas Sivilevičius
Keyword(s):  
Asphalt Concrete ◽  
Additive Model ◽  
Technological Parameters ◽  
Destructive Effect ◽  
The Road ◽  
Weighted Matrix ◽  
Bitumen Content ◽  
Before And After ◽  
On The Road ◽  
And Performance

Some particular aspects such as the improvement methods of technological parameters for hot bitu‐ men storage in a pipeline transport system, transportation and dosed supply to batch asphalt mixing plant (AMP) are evaluated in this paper. Bitumen in asphalt concrete binds together the material of mineral particles into a strong conglomerate of a complicated structure, capable of withstanding the destructive effect of vehicles and the factors on the road pavements. The optimal amount of bitumen determined by calculation and laboratory testing should be maintained in mix batches of hot‐mix asphalt (HMA) obtained from AMP mixer. In the periodic type of the asphalt concrete blender mass of the weighted matrix in the all merging batcher's tanks should correspond in percents equally in the HMA to the designed amount of the job‐mix formula (JMF). The bitumen batcher does not always weigh bitumen portions precisely. Their mass deviations from the amount determined by JMF and its variation impair HMA composition and performance. In addition,, an additive model for calculating the effect of factors causing the variance of bitumen content in the produced HMA mixture is presented in this current paper as well. The data on statistical evaluation of bitumen batcher's modernization performed at certain Lithuanian Enterprise are discussed. The differences in structures of reconstructed and not reconstructed bitumen batching systems (BBS) are analysed and methods of determining modernization effectiveness are presented. The effectiveness of BBS is analysed too, defining the deviations of bitumen content in subsamples, taken and extracted everyday for two seasons (before and after the batcher's modernization) of HMA mixture production from the value of JMF and comparing them to the values of tolerances. The analysis of column charts and histograms shows that the made modernization helped to increase the precision of supplying the required amount of bitumen to HMA mixture insignificantly. However, the control of BBS has been considerably increased.

Uniform Experimental Design of Coarse Aggregate Asphalt Pavement

2013 ◽  
Vol 753-755 ◽  
pp. 678-681
Author(s):  
Li Jie Ma ◽  
Jin Yu Zhang
Keyword(s):  
Particle Size ◽  
Design Research ◽  
Coarse Aggregate ◽  
Uniform Design ◽  
Asphalt Mixture ◽  
Degree Theory ◽  
The Road ◽  
Relational Degree ◽  
Size Grade ◽  
Maximum Particle

Coarse aggregate of asphalt mixture is crucial to the road performance. In this paper, by using the method of uniform design research, particle size of the aggregate were studied influence to CBR value with nominal maximum particle size 13.2mm aggregate. Further to determine the critical particle size grade by gray relational degree theory.

Interfacial Property of the Asphalt Concrete Pavement with Bonifiber Reinforced Overlayer

2011 ◽  
Vol 374-377 ◽  
pp. 1511-1514
Author(s):  
Yang Guo ◽  
Ying Hua Zhao
Keyword(s):  
Asphalt Concrete ◽  
Asphalt Mixture ◽  
Primary Objective ◽  
Interfacial Property ◽  
Modified Asphalt ◽  
Interface Property ◽  
The Road ◽  
Shear Property ◽  
Road Performance ◽  
Pavement Structures

Fiber reinforcement as an available attempt has been proved to be effective in improving the toughness of asphalt concrete and is becoming a new method for highway maintenance. When fiber modified asphalt mixture is used as the surface course of a reconstructive pavement, the interface bonding property between top and lower layers seems to become a crucial factor in the road performance of the long lasting pavement. The primary objective of the research is to study the influence of fiber inclusions on the interfacial shear property of the pavement. With the purpose of discussing the shear strength of the interface between Bonifiber modified asphalt mixture top layer and the normal asphalt mixture layer，the laboratory shear test was developed on MTS-810. Four kinds of double-layered cylindrical specimens were made to simulate the different pavement structures. Test results show that the overlaying with Bonifiber modified asphalt mixture improves not only the general road performance but also the interface property. It is concluded that, the interface property of pavement with fiber reinforced top layer behaves much better than that with normal asphalt concrete one.

Research on the Electrical Energy of Piezoelectric-Embedded Asphalt Mixture

2013 ◽  
Vol 303-306 ◽  
pp. 26-31 ◽  
Author(s):  
Ning Tang ◽  
Chang Jun Sun ◽  
Shao Xu Huang ◽  
Pan Pan ◽  
Shao Peng Wu
Keyword(s):  
Asphalt Concrete ◽  
Road Safety ◽  
Vibrational Energy ◽  
Piezoelectric Materials ◽  
Asphalt Mixture ◽  
Electrical Energy ◽  
Road Surface ◽  
The Road ◽  
Road Lighting ◽  
Road Performance

There is an important effect on road safety with no lighting facilities near the wild road. With the piezoelectric materials embedded in the asphalt concrete as the smart aggregates, the piezoelectric asphalt concrete transforms the vibrational energy of road surface into electrical energy, to supply the road lighting facilities or be stored up. In this study, the electrical energy of piezoelectric-embedded asphalt mixture by using UTM and wheel tester. The results show that PMnS-PZN-PZT ceramic doped with 0.45wt% Fe2O3 (4mm×8pieces) be embedded in the AC-10 asphalt concrete which can obtain well road performance and micropower electrical energy.

Research on Designing Optimum Asphalt Aggregate Ratio of Asphalt Mixture by Direct Shear Method

2014 ◽  
Vol 505-506 ◽  
pp. 215-218
Author(s):  
Hong Mei Li ◽  
Wen Fang Liu
Keyword(s):  
Permanent Deformation ◽  
Maximum Shear Stress ◽  
Asphalt Mixture ◽  
Confining Pressure ◽  
Asphalt Mixtures ◽  
Test Machine ◽  
Direct Shear ◽  
The Road ◽  
Good Ability ◽  
Shear Performance

The author has done the shear experiment of asphalt mixtures at different asphalt aggregate ratio and different confining pressure using the direct shear test machine, then determined the optimum asphalt aggregate ratio according to the maximum shear stress. The asphalt mixture under optimum asphalt aggregate ratio has better shear performance by this method, and this method can better simulate the road surface actual stressful condition, the asphalt mixture has a good ability of anti-permanent deformation and fatigue.

scholarly journals The Influence of Aeolian Sand on the Anti-Skid Characteristics of Asphalt Pavement

Materials ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5523
Author(s):  
Jingsheng Pan ◽  
Hua Zhao ◽  
Yong Wang ◽  
Gang Liu
Keyword(s):  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Asphalt Mixtures ◽  
Asphalt Pavements ◽  
Test Results ◽  
Aeolian Sand ◽  
The Road ◽  
Gray Correlation ◽  
Positive Linear Correlation ◽  
Sand Accumulation

The influence of sand accumulation on the skid resistance of asphalt pavement was studied. Many scholars have researched the anti-skid performance of conventional asphalt pavements. However, there is a lack of research on the anti-skid performance of desert roads under the condition of sand accumulation. In this study, AC-13 and AC-16 asphalt mixtures were used. The British Pendulum Number (BPN) under different sand accumulations was measured with a pendulum friction coefficient meter, and the Ames engineering texture scanner was used to obtain different sand accumulations. The texture index of asphalt mixture was used to study the macro and micro texture of asphalt pavement under different amounts of sand accumulation, and the degree of influence of different particle sizes on BPN was obtained through gray correlation analysis. The test results show that the presence of aeolian sand has a significant impact on the macro and micro texture of the asphalt pavement and will cause the anti-skid performance to decrease. Moreover, there is an apparent positive linear correlation between the road surface texture index and BPN. The research results may provide reference and reference for the design and maintenance of desert highways.

scholarly journals Durability of Asphalt Concrete (ACWC) Mixed with Antistripping Additive

2021 ◽  
Vol 10 (4) ◽  
pp. 239-247
Author(s):  
Sena Kuswara* ◽  
Bagus Hario Setiadji ◽  
Jati Utomo Dwi Hatmoko
Keyword(s):  
Asphalt Concrete ◽  
Asphalt Mixture ◽  
The Road ◽  
Expected Performance ◽  
Pavement Structures ◽  
Marshall Stability

In pavement structures that are often submerged by water, the damage to pavement is often caused by the loss of bonds or adhesions between the aggregate and asphalt, the type of damage that occurs due to the loss of adhesion between the aggregate and asphalt is the exfoliation of asphalt granules so that the road is cracked and corrugated. To reduce the release of aggregate granules and improve the bond between aggregates and asphalt can be made with the addition of anti-exfoliating additives or antistripping agent additives. This study aims to analyze the performance of wear-coated concrete asphalt mixture (ACWC) with the addition of antistripping additives. Antistripping agents used in this study were Zycotherm, Morlife and Adhebit with variations of 0.1% addition, 0.3% and 0.5% of the weight of asphalt mixture. The results of this study showed that ACWC mixture with the addition of Zycotherm additives resulted in optimum Marshall stability and increased durability at 0.5% and Adhebit additives at 0.3% levels, while in Morlife additives although at 0.3% levels were able to show optimum marshall analysis in terms of increased durability did not show expected performance.

scholarly journals PENGARUH PENAMBAHAN LIMBAH PLASTIK KRESEK SEBAGAI SUBSITUSI ASPAL PEN 60/70 TERHADAP KARAKTERISTIK CAMPURAN LASTON AC – BC

2018 ◽  
Vol 1 (3) ◽  
pp. 737-748
Author(s):  
Suraya Fitri ◽  
Sofyan M. Saleh ◽  
Muhammad Isya
Keyword(s):  
Asphalt Concrete ◽  
Highway Construction ◽  
Asphalt Mixture ◽  
Plastic Waste ◽  
Raw Material ◽  
The Road ◽  
Bitumen Content ◽  
Plastic Bag ◽  
One Step

Abstract: Good asphalt concrete and good care are required for the highway construction, to support the road capabilities and to raise the quality of asphalt mixture, one step is by adding additives into the asphalt. Additive material used plastic bag waste, while Basalt stone used as material that is raw material from hills. Waste plastic bag can be used in various ways, one of them by adding plastic into an asphalt mixture. Mixing plastic waste into the highway construction has two aims, to minimize plastic waste and to improve the quality of roads. This study was conducted to determine the effect of plastic bag waste use as a substitution of Asphalt Pen 60/70 by using Basalt aggregate toward Marshall’s characteristics of asphalt concrete AC-BC mixture. Initial phase of this research was to calculate Optimum Bitumen Content (OBC). The addition of varied plastic bag waste as an additive respectively 2%, 4%, 6%, and 8% in OBC-0.5, OBC, and OBC + 0.5 from the initial OBC of 5.35%. From the three OBCs, it was taken the highest value at OBC +0.5 of 3.3% for the production of test specimens in plastic OPC variation percentage of ± 2% by determining Marshall’s value and durability. Stability value continued to rise in the percentage of plastic bag waste content variation respectively 1.3%, 3.3%, and 5.3% by 1470.48 kg, kg 1476.28, and 1489.28 kg with 30 minutes immersion (temperature = 600C ) and 1286.42 kg, kg 1316.35, 1345.41 kg with a 24-hour immersion (temperature = 600C). This condition is caused by the additive content that is mixed with asphalt pen 60/70 in the mixture, it causes the adhesion of asphalt with aggregate become better until it reaches a certain value limit, which is at the limit of 5.3% with the best stability value of 1489.28 kg in the 30 minutes immersion and 1345.41 kg in 24-hour immersion. From the comparison of both stabilities, the obtained durability values were 99.84%, so that it met specifications for additive-added mixtures, ≥ 90%.Abstrak: Pembangunan konstruksi jalan raya diperlukan beton aspal yang baik dan perawatan yang baik pula, untuk mendukung kemampuan jalan tersebut dan menaikan mutu campuran beraspal salah satunya dengan menambahkan bahan aditif kedalam aspal.. bahan aditif digunakan limbah plastik kresek, sedangkan untuk material digunakan batuan Basalt yang merupakan bahan baku dari gunung. Limbah sampah plastik ini bisa dimanfaatkan dengan berbagai cara, salah satunya dengan cara menambahkan plastik kedalam suatu campuran aspal. Mencampur sampah plastik kedalam kontruksi jalan raya mempunyai dua tujuan, yaitu meminimalkan sampah plastik dan meningkatkan kualitas jalan. Penelitian ini Tujuan Penelitian dilakukan untuk mengetahui pengaruh pemakaian limbah plastik kresek sebagai subsitusi Aspal Pen 60/70 dengan menggunakan agregat bassalt terhadap karakteristik Marshall campuran aspal beton AC-BC. Tahapan awal penelitian adalah mencari Kadar Aspal Optimum (KAO). Penambahan variasi kantong plastik bekas sebagai aditif secara berturut-turut yaitu 2%, 4%, 6%, dan 8% pada KAO-0,5, KAO dan KAO+0,5 dari KAO awal 5,35%. Dari ketiga KAO tersebut diambil nilai yang tertinggi yaitu pada KAO+0,5 sebesar 3,3% untuk pembuatan benda uji pada persentase variasi plastik KPO ±2% dengan mendapatkan nilai marshall dan durabilitas. Nilai stabilitas terus meningkat pada persentase variasi kadar plastic bekas 1,3%, 3,3% dan 5,3% masing-masing sebesar 1470,48kg, 1476,28kg, dan 1489,28kg dengan rendaman 30 menit (suhu 600C) dan1286,42kg, 1316,35kg, 1345,41kg dengan rendaman 24 jam (suhu 600C). Kondisi ini disebabkan oleh kandungan dalam aditif yang bercampur dengan aspal pen 60/70 di dalam campuran menyebabkan daya lekat aspal dengan aregat menjadi lebih baik hingga mencapai batas nilai tertentu, yaitu pada batas 5,3% dengan nilai stabilitas terbaik yaitu sebesar 1489,28kg pada rendaman 30 menit dan sebesar 1345,41kg pada rendaman 24 jam. Dari perbandingan ke dua stabilitas tersebut maka diperoleh nilai durabilitas sebesar 99,84% sehingga telah memenuhi spesifikasi untuk campuran yang ditambahkan aditif, yaitu sebesar ≥ 90%.

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