Compaction Quality of Bitumen Mixtures Based on Ultrasonic Methods

2007 ◽  
Vol 353-358 ◽  
pp. 2341-2344
Author(s):  
Tao Xie ◽  
Yan Jun Qiu ◽  
Ze Zhong Jiang ◽  
Bo Lan
Keyword(s):  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Concrete Pavements ◽  
Destructive Testing ◽  
Air Voids ◽  
Highway Engineering ◽  
Ultrasonic Methods ◽  
Pavement Engineering ◽  
Excellent Method

Water damage of asphalt concrete pavements has been one of the major distresses in highway engineering. Engineering experiences and research results indicate that this damage is due to the extortionate air voids of bitumen mixtures. Paranormal porosity of asphalt mixture is largely the result of the poor controlling of compact degree during paving process. The quality of asphalt pavement is subjected to the controlling methods of compacting of bitumen mixtures. Ultrasonic is an excellent method for non-destructive testing used in various engineering fields. It is also a potentially effective tool to be applied in the control and evaluation of the compaction quality of bitumen mixtures. This paper presents the results of a study aimed at the applicability of ultrasonic technology for evaluation of porosity and compaction quality of bitumen mixtures. It is shown that this technology, which has been successfully used for many years for evaluation of Portland concrete structures, might be used in asphalt pavement engineering to provide a simple, quick, and objective methodology for control and evaluation of the compact quality of bitumen mixtures. The results of laboratory testing demonstrate the potential of this technology.

scholarly journals Effect of Gradation Variability on Volume Parameter and Key Performances of HMA

2021 ◽  
Vol 7 ◽  
Author(s):  
Shutang Liu ◽  
Lin Zhu ◽  
Huiqin Zhang ◽  
Tao Liu ◽  
Ping Ji ◽  
...  
Keyword(s):  
Design Theory ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Fine Aggregate ◽  
Aggregate Gradation ◽  
Mineral Aggregate ◽  
Air Voids ◽  
Pavement Engineering ◽  
Asphalt Content ◽  
Main Component

The graded mineral aggregate composed of coarse aggregate, fine aggregate, and mineral powder is the main component of hot asphalt mixture (HMA), and it occupies a mass ratio of more than 95% in HMA. The gradation variability of mineral aggregate is frequently an unavoidable problem in the construction of asphalt pavement engineering. In order to investigate the effect of gradation variability on the volume parameters and key performances of HMA, the asphalt concrete with a nominal maximum particle size of 20 mm (AC20) was selected as the research carrier. Firstly, a benchmark mineral aggregate gradation (BMAG) was designed based on the theory of dense skeleton gradation presented in the paper. Secondly, six types of HMA (that is, AC20) with variable gradations were also determined and all the specimens were prepared by rotary compaction process with the same optimum asphalt content (gradation varies but asphalt content remains the same), and finally based on asphalt pavement analyzer, the performances of all the specimens of each gradation were tested. The results show that, compared with the BMAG-HMA, the volume parameters such as air voids, voids in mineral aggregate, and voids filled with asphalt of the variable-graded HMA change in different directions, but the water stability and high-temperature performance both degrade greatly. The experimental results also show the feasibility and effectiveness of the dense skeleton gradation design theory adopted in this study.

scholarly journals A GPR-Based Pavement Density Profiler: Operating Principles and Applications

2021 ◽  
Vol 13 (13) ◽  
pp. 2613
Author(s):  
Nectaria Diamanti ◽  
A. Peter Annan ◽  
Steven R. Jackson ◽  
Dylan Klazinga
Keyword(s):  
Asphalt Pavement ◽  
Wave Impedance ◽  
Asphalt Mixtures ◽  
Void Content ◽  
Air Voids ◽  
New Instrument ◽  
Pavement Engineering ◽  
And Performance ◽  
Air Void ◽  
Air Void Content

Density is one of the most important parameters in the construction of asphalt mixtures and pavement engineering. When a mixture is properly designed and compacted, it will contain enough air voids to prevent plastic deformation but will have low enough air void content to prevent water ingress and moisture damage. By mapping asphalt pavement density, areas with air void content outside of the acceptable range can be identified to predict its future life and performance. We describe a new instrument, the pavement density profiler (PDP) that has evolved from many years of making measurements of asphalt pavement properties. This instrument measures the electromagnetic (EM) wave impedance to infer the asphalt pavement density (or air void content) locally and over profiles.

scholarly journals Effect of Adding Crushed Glass to Asphalt Mix

2016 ◽  
Vol 62 (2) ◽  
pp. 35-44 ◽  
Author(s):  
Y. Issa
Keyword(s):  
Specific Gravity ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Waste Glass ◽  
Maintenance Cost ◽  
Original Sample ◽  
Air Voids ◽  
The World ◽  
Asphalt Mix

Abstract The need to modify conventional pavement rises due to high maintenance cost of the highway systems. With the continuously increased consumption, a large amount of waste glass materials is generated annually in the world. This paper aims to study the performance of pavement asphalt in which a fractional aggregate is replaced with crushed glass. In this paper, some important properties of asphalt mix, including stability, flow, specific gravity and air voids are investigated. The original sample is prepared without adding glass for different percentages of bitumen. Other samples are prepared by adding crushed glass to the mix with 5%, 10%, and 15% by aggregate weight. The results show that the properties of glass-asphalt mixture are improved in comparison with normal asphalt pavement. It is concluded that the use of waste glass in asphalt pavement is desirable.

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.

A review of using porous asphalt pavement as an alternative to conventional pavement in stormwater treatment

2017 ◽  
Vol 14 (5) ◽  
pp. 355-362 ◽  
Author(s):  
Kabiru Abdullahi Ahmad ◽  
Mohd Ezree Abdullah ◽  
Norhidayah Abdul Hassan ◽  
Hussaini Ahmad Daura ◽  
Kamarudin Ambak
Keyword(s):  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Short Review ◽  
Stormwater Treatment ◽  
Content Type ◽  
Porous Asphalt ◽  
Quality Of Water ◽  
Franklin Institute ◽  
General Studies

Purpose Porous asphalt has been used for than 50 years, but it was originally developed in 1970 at Franklin institute in Philadelphia, Pennsylvania. By 1974 the first formalized procedure was created by the federal highway administration to design mixtures. Many researches on porous asphalt mixture have been conducted for the past two decades. However, there remains some concern about the potential adverse impacts of infiltrated surface water on the underlying groundwater. The purpose of this paper is to presents a short review on the application of porous asphalt pavement stormwater treatment. Design/methodology/approach In this paper, a critical review on history and benefits is presented followed by review of general studies of using porous asphalt pavement, and some recent scientific studies that examine potential contamination of soil and groundwater because of infiltration systems. Findings This paper indicates that porous asphalt pavement is more efficient than conventional pavements in terms of retaining pollutants, improving the quality of water and runoff while maintaining infiltration. Originality/value This paper may also help reduce land consumption by reducing the need for traditional storm-water management structures. However, on the other hand, the priority objectives which is minimizing increased flooding and pollution risks while increasing performance efficiency and enhancing local environmental quality-of-life is achieved.

Effective Compactible Time of Asphalt Pavement

2011 ◽  
Vol 255-260 ◽  
pp. 3156-3160 ◽  
Author(s):  
Ying Gao ◽  
Ren Xiao Wang ◽  
Wen Bin Yu
Keyword(s):  
Finite Element ◽  
Solar Radiation ◽  
Air Temperature ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Great Influence ◽  
Cooling Curve ◽  
Cooling Curves ◽  
Finite Element Software

The quality of compaction is important to Hot Mixed Asphalt (HMA) pavement. Most premature failures of asphalt pavement are concerned with poor compaction. Characteristics of cooling curve of asphalt mixture were studied in this paper. Through on site measurement, it was found that air temperature, solar radiation, wind velocity and layer thickness had great influence on cooling time. Then, with ABAQUS finite element software, the rule of HMA mixture cooling curves during paving was simulated. A simple multi-factors regression equation was given which can be used to estimate the effective compactible time.

Discrete Element Method (DEM) Analyses of Hot-Mix Asphalt (HMA) Mixtures Compaction and Internal Structure

2013 ◽  
Vol 639-640 ◽  
pp. 1287-1294 ◽  
Author(s):  
Jing Song Chen ◽  
Lei Zeng ◽  
Jian Yin
Keyword(s):  
Discrete Element Method ◽  
Hot Mix Asphalt ◽  
Coarse Aggregate ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Point Of View ◽  
Compaction Process ◽  
Dem Simulation ◽  
Air Voids ◽  
Superpave Gyratory Compactor

Asphalt mixture compaction is an important procedure of asphalt mixture construction and can significantly affect the performance of asphalt pavement. In this paper, an open source DEM code was applied to simulate the compaction of hot-mix asphalt (HMA) with the Superpave gyratory compactor. The asphalt mixture compaction process, air voids distribution, internal coarse aggregate structure, and the effect of CA ratio were investigated from a microscopic point of view. The analysis results show that DEM simulation is an economical and effective approach to the research of asphalt mixture compaction, and has tremendous potential for asphalt mixture design.

Development and Application of Real-Time Quality Monitoring System of Hot Mixed Asphalt Mixture

2013 ◽  
Vol 321-324 ◽  
pp. 1863-1866
Author(s):  
Wei Feng Zhou ◽  
Wen Bin Xie
Keyword(s):  
Quality Control ◽  
Real Time ◽  
Monitoring System ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Quality Monitoring ◽  
Pavement Performance ◽  
The Stability ◽  
Hot Mixed Asphalt

As the stability of quality of hot mixed asphalt mixture (including gradation, asphalt aggregate ratio, temperature, etc) is the premise of good pavement performance of asphalt pavement, it is regarded the key of ensuring service life and pavement performance of road to ensure the quality of hot mixed asphalt mixture. This research is oriented at developing real-time quality control & monitoring system of asphalt mixture further on the basis of the established quality control system of mixing plant. The functions and operating principles of the system are introduced in this article.

A New Method of Gradation Design about Rutting Resistance of Asphalt Pavement

2010 ◽  
Vol 168-170 ◽  
pp. 2397-2401
Author(s):  
Bao Lin Zhu ◽  
Xin Huang ◽  
Yan Ping Jing
Keyword(s):  
Particle Size ◽  
Prediction Model ◽  
Packing Density ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Aggregate Size ◽  
Air Voids ◽  
Aggregate Packing ◽  
Continuous Particle ◽  
The Relationship

The article derived the formula of continuous particle size of asphalt aggregate packing density based on the Stovall model; according to the relationship between porosity and rutting, rutting prediction model was established; by experiment to determine the parameters in the formula to be determined , and the applicability of the formula was verified, the results showed that: the formula can calculate air voids and dynamic stability of asphalt mixture by aggregate size distribution and the aggregate ratio .

AC-25 Asphalt Mixture Dynamic Stability Criteria

2013 ◽  
Vol 718-720 ◽  
pp. 1855-1860
Author(s):  
Chuang Min Li ◽  
An Liu ◽  
Yun Chen
Keyword(s):  
Dynamic Stability ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Structure Design ◽  
Specimen Thickness ◽  
Stability Criteria ◽  
High Temperature Stability ◽  
Highway Engineering ◽  
Technical Specifications ◽  
Pavement Structure

With the publication of Standard test methods of bitumen and bituminous mixtures for highway engineering " in 2011, the common asphalt mixture rutting test can be carried out in accordance with the T0719-2011 in China. But in our country, the current " Technical specifications for construction of highway engineering asphalt pavement " published in 2004 describes that the nominal maximum size of more than 19mm dense-graded asphalt concrete or asphalt treated permeable base is not suitable for carrying out specimens rutting test in accordance with the size of 300mm× 300mm ×50mm, so there is no corresponding dynamic stability requirements to the commonly used AC-25 type asphalt mixture in pavement layer in China. Combined with the Dao-He expressway pavement structure design and used the T0719-2011 method of AC-25 type different thickness rutting test, the relationship between the rutting specimen thickness and the dynamic stability is established. With reference to the requirements of asphalt pavement construction specifications and pavement structure layer on high temperature stability, the 8cm thick AC-25 common asphalt mixture dynamic stability criteria is put forward. Analyzing on AC-25 with No. 50 pure asphalt mixture dynamic stability test data, the dynamic stability requirements is put forward as validation for AC-25 asphalt mixture dynamic stability criteria in Dao-He expressway.

Sign in / Sign up

Export Citation Format

Share Document