Application of Synthetic Fibre in Mixture of Asphalt Pavement

2014 ◽  
Vol 608-609 ◽  
pp. 1020-1024
Author(s):  
Jing Xu
Keyword(s):  
Synthetic Fibre ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
High Strength ◽  
Good Effect ◽  
Polyacrylonitrile Fiber ◽  
Wear Resistant ◽  
Reinforcing Effect ◽  
The Road ◽  
Different Types

The fiber is a reinforced material which has relatively light texture, high strength, is durable and wear-resistant, and widely used in the mixture of asphalt pavement. Adding different types of fibers in the construction, has a good effect in preventing cracks in the road, the performance of the road will also enhance. After the appropriate amount of fiber added to the asphalt mixture, fiber molecules will continuously and uniformly spread out, this time it will increase the anti-destructive of mixture, and will play an important role in protecting the road, preventing the road fracture. Related practices abroad show that adding fiber in asphalt mixture, every performance of the mixture will increase in different degrees. The diameter and density of different types of fibers will be different, of course, the reinforcing effect are not the same. This article describes application of a synthetic fibre in asphalt mixture, which is polyacrylonitrile fiber.

scholarly journals Preparation of Latent Heat Materials Used in Asphalt Pavement and Theirs’ Controlling Temperature Performance

2012 ◽  
Vol 5 ◽  
pp. 322-327 ◽  
Author(s):  
Xin Bian ◽  
Yi Qiu Tan ◽  
Jian Fu Lv ◽  
Li Yan Shan
Keyword(s):  
Phase Change ◽  
Latent Heat ◽  
Phase Change Materials ◽  
Thermal Environment ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Good Effect ◽  
Fine Aggregate ◽  
The Road ◽  
Temperature Performance

In order to solve the rutting diseases of asphalt concrete pavement, latent heat materials for asphalt pavement were prepared and its controlling temperature performance was studied. Phase change materials (PCM), which were fitted to thermal environment of road were selected, phase change asphalt, diatomite powder and pottery sand granular composite phase change materials (CPCM) were prepared by three kinds of import modes. The CPCM were chosen by comparing the performance of above mentioned materials. Latent heat asphalt mixture (LHAM) was made by replacing mineral powder and fine aggregate with CPCM. Its controlling temperature ability was tested by temperature monitor system. The results show that, comparing to asphalt mixture, LHAM can reduce the temperature to 8-10°C. Therefore, the LHAM has a good effect on adjusting the road temperature.

Research on New Technology to Control Highway Semi-Rigid Base Asphalt Pavement Cracks

2011 ◽  
Vol 194-196 ◽  
pp. 1632-1638
Author(s):  
Hong Liang Deng ◽  
Xiao Yin Fu ◽  
Wen Xue Gao ◽  
Ting Ting Ni ◽  
Kai Jiang Chen
Keyword(s):  
Composite Materials ◽  
Theoretical Calculations ◽  
Asphalt Pavement ◽  
New Technology ◽  
Service Level ◽  
Self Control ◽  
Good Effect ◽  
Rigid Base ◽  
The Road ◽  
Absorbing Layer

The methods of controlling Highway semi-rigid base asphalt pavement cracks and other diseases are always hot fields of road engineering and academic circles. The existing methods are on some degree efficient on delaying the formation and extension of cracks, but the effect is limited with different methods and various mechanisms of preventing cracks. Base on force analysis of pavement, this article presents a new technology of crack controlling which uses intelligent composite materials interlayer. By adding a stress absorbing layer between the asphalt surface layers or the semi-rigid base layers with low modulus, good toughness, self-adaptability and self-control ability, the intelligent composite materials interlayer has a good effect on controlling cracks which has been proved by the theoretical calculations and experimental analysis. As a result, the intelligent composite materials interlayer could efficiently prevent and delay the formation and extension of cracks, the safety and comfort of highway could be improved significantly while the cost of construction and maintenance decreasing. And the service level and social image of the road could also be improved effectively. This research has important academic and application value.

scholarly journals KARAKTERISTIK CAMPURAN AC-WC MENGGUNAKAN MATERIAL RECLAIMED ASPHALT PAVEMENT DENGAN TAMBAHAN ASPAL PEN. 60/70 YANG DISUBSTITUSI STYROFOAM

2019 ◽  
Vol 2 (2) ◽  
pp. 149-157
Author(s):  
Hendra Arianto ◽  
Sofyan M. Saleh ◽  
Renni Anggraini
Keyword(s):  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Reclaimed Asphalt Pavement ◽  
Additional Material ◽  
Reclaimed Asphalt ◽  
The Road ◽  
Concrete Type ◽  
Technical Specifications ◽  
Parameter Values

Reuse of reclaimed asphalt pavement material (RAP) is an alternative which applicated for potential enough on the roughness of the road. RAP material can be reused by adding the asphalt and the new aggregate according of the mixture composition so that it is expected will be obtained the quality as planned. One of the efforts made in improving the quality of asphalt mixture RAP material is using a modified asphalt with additional material, such as styrofoam. The use of styrofoam into the asphalt is expected to improve the technical properties of a mixture. The purpose of this research is to know the comparative characteristics of hot mix asphalt (asphalt concrete) type AC-WC that uses RAP material with additional asphalt pen. 60/70 and asphalt pen. 60/70 substitution in the styrofoam by 8%, 10% and 12% against the weight of asphalt based on levels of asphalt left on the material. The initial stages of this study is to conduct an examination of the physical properties of RAP material, then manufacturing a specimen with variations of the addition of asphalt and aggregate new levels based on the job mix diesign (JMD) Bina Marga Aceh (2013). Based on research results, parameter values marshall on all types of asphalt mixture with new aggregate as well as RAP materials and the use of 100% asphalt pen. 60/70 additional or different types of asphalt on OAC has fulfilled the technical specifications defined by the Bina Marga (2014). Best stability values obtained on asphalt mixture using RAP material with additional asphalt pen. 60/70 with 12% styrofoam substitution on OAC JMD Bina Marga Aceh, that amounted to 3,308.72 kg, the lowest value stability retrieved on asphalt mixture using a new aggregate based on the results of Department of Bina Marga Aceh on OAC i.e. of 983.94 kg.

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.

Contrastive Studies of Asphalt Pavement on Suction Exothermic Properties and Cooling Measures

2011 ◽  
Vol 97-98 ◽  
pp. 290-296
Author(s):  
Wei Guang Li ◽  
Zhi Dong Han ◽  
Zhen Bei Lv ◽  
Yan Hong Duan
Keyword(s):  
Heat Storage ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Heat Island ◽  
Regular Pattern ◽  
Island Effect ◽  
Different Types ◽  
Urban Heat ◽  
Pavement Structure ◽  
Quantity Of Heat

It is important to reduce asphalt mixture strong absorption characteristics to improve anti-rutting ability and reduce the urban heat island effect. This paper firstly studies the suction and exothermic regular pattern of existing three types, five kinds of asphalt pavement structure. It turns out that there are differences in suction and exothermic characteristics of different types of pavement structure. Suspension close-grained type structure has higher adiabatic heating; gap-type skeleton has faster speed of suction and exothermic; and dense skeleton has more total quantity of heat storage. Accordingly, test and analysis of cooling effect of Gap-type skeleton asphalt pavement has conducted by adopting smear reflective materials to reduce reflectance and surface adding insulation materials, The results show that reducing reflectivity is the best way which can reduce by 5 centigrade around. In addition , improving effectiveness has also been studied by adding light-colored stone partly replacing mineral aggregate, and substituting busing mullite for aggregate below2.36 mm is the best cooling way ,which can reduce by 3.3 centigrade.

Test Study on Overdose Cement Stabilized Crushed Rock Base

2011 ◽  
Vol 415-417 ◽  
pp. 254-260 ◽  
Author(s):  
Yan Peng Lin ◽  
Jia Liu
Keyword(s):  
Asphalt Pavement ◽  
Low Cost ◽  
Base Material ◽  
Primary Stability ◽  
High Strength ◽  
Crushed Rock ◽  
Premature Failure ◽  
Soil Plasticity ◽  
The Road ◽  
Test Study

The early disease of semi-rigid asphalt pavement disease will seriously affect the quality and durability of road usage and the life of the road. Water into the pavement layer cause water content increases and the strength greatly reduced in primary or sub-base material which contends more soil and greater soil plasticity index. Resulting in premature failure of asphalt pavement, and the road surface rutting greater is the insufficient primary strength. The use of water overdose primary stability can fully play its high strength and low cost advantages, but also has a low shrinkage, minimize shrinkage cracks.

scholarly journals Investigation On The Causes Of Distress Affecting Perfomance Of Asphalt Pavement

2021 ◽  
Vol 23 (09) ◽  
pp. 209-220
Author(s):  
ZerihunBelayneh Woldesenbet ◽  
◽  
Mulugeta Regassa Yimam ◽  
Mengistu Mena Kuleno ◽  
◽  
...  
Keyword(s):  
Asphalt Pavement ◽  
Flexible Pavements ◽  
Engineering Properties ◽  
Primary Data ◽  
Maintenance Strategy ◽  
The Road ◽  
Different Types ◽  
Data Survey

Flexible pavements are designed to serve a specified design period without significant failures, but once it was constructed and opened to traffic, after a few years, different types of distresses or damages are occurring. This study focused on the investigation of the causes of the distresses of the study area, which is affecting performance of the pavement. To do the study, a primary data survey performed directly in the field in order to identify, classify, and quantify the extent of defects/distresses. At the same location, samples collected and brought to the laboratory for testing to determine the engineering properties of soils, for both severely distressed and non-distressed sections. It was concluded from the results obtained that the road was constructed with materials with poor engineering properties compared with ERA standard, has lack of routine maintenance strategy and this created condition in which minor distresses expanded to be major distress for the road that highly hinder its performance.

scholarly journals Porous asphalt pavement for traffic noise reduction and pavement dewatering – the pollution problem

2018 ◽  
Vol 45 ◽  
pp. 00114
Author(s):  
Lesław Bichajło ◽  
Krzysztof Kołodziej
Keyword(s):  
Asphalt Pavement ◽  
Traffic Noise ◽  
Asphalt Mixture ◽  
Porous Asphalt ◽  
The Road ◽  
Road Pavement ◽  
Pollution Problem ◽  
Pavement Construction ◽  
Air Void ◽  
The City

The paper characterizes the porous asphalt mixture used in pavement construction. This kind of pavement can reduce traffic noise and reduce the slipperiness of the road pavement. The effectiveness of the porous asphalt depends on many design and technological aspects, but especially on the air-void clearance in the pavement layer. The paper includes the results of water permeability research based on laboratory tests of specimens from actual road pavement. The research shows the differences between the contamination of the road pavement sections located inside and outside the city. The paper includes recommendations for using porous asphalt based on experiences under Polish conditions.

Application of Fiberglass-Polyester Paving Mat in Engineering

2012 ◽  
Vol 488-489 ◽  
pp. 485-489 ◽  
Author(s):  
Chao Jue Yi ◽  
Peng Cheng Zhai
Keyword(s):  
Asphalt Pavement ◽  
Engineering Application ◽  
High Strength ◽  
Water Infiltration ◽  
Pavement Performance ◽  
Synthetic Material ◽  
Forming Mechanism ◽  
The Road ◽  
Pavement Construction ◽  
Reflection Crack

Fiberglass-Polyester Paving Mat is a new compound synthetic material, and a compound of fiberglass and polyester, which advantages include high strength, low elongation, good compatibility with bitumen, resistance of high temperature and corrosiveness. This paper mainly elaborated the performance of Fiberglass-Polyester Paving Mat, such as delaying cracking, alleviating the crack development, which can effectively prevent the road surface water infiltration and improve the pavement performance in asphalt pavement construction and transformation. Based on the forming mechanism of reflective cracks, this article describes the engineering application of fiberglass-polyester paving mat in the prevention of reflection crack of bituminous pavement and in waterproofing of the paving layer in tunnels, thus providing the basis for the application of Fiberglass-Polyester Paving Mat in highway construction and maintenance engineering.

Viscoelastic Analysis on High Temperature’s Stability of Asphalt Pavement

2009 ◽  
Vol 620-622 ◽  
pp. 719-722
Author(s):  
Hong Wang ◽  
Shao Peng Wu ◽  
Ling Pang
Keyword(s):  
High Temperature ◽  
Mechanical Performance ◽  
Asphalt Pavement ◽  
Permanent Deformation ◽  
Asphalt Mixture ◽  
Three Dimensional ◽  
The Road ◽  
Environment Temperature ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

Flexible pavement-asphalt mixture plays an important role in structures of the primary road and bridge at present. However, the mixture is a type of viscoelstic material and is sensitive to environment temperature, especially a high temperature. The permanent deformation due to high temperature and the material’s viscoelastic shorten the service life of the road and even lead to traffic accident. Therefore it is necessary to analyze the pavement’s mechanical performance. In the study, the viscoelastic constitutive equation of the mixture is transformed to Prony Series. The objective of this study is to characterize the stability of asphalt pavement at high temperatures with a three-dimensional finite element and accurately predict the pavement’s strain and stress in vehicle load.

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