An Improved Low-Cost Continuous Compaction Detection Method for the Construction of Asphalt Pavement

To realize the continuous compaction control (CCC) of asphalt pavement during construction, continuous detection method was investigated for the compaction degree values. For the trajectory of rollers, a collaborative positioning method was proposed. For the monitoring of rolling process, an embedded-based detection system was designed. For the evaluation of rolling effect, harmonic analysis was introduced and a new index, vibration compaction energy value (VCVe), was proposed. Positioning experiments were conducted, and the accuracy was improved to 0.48 m. Rolling tests were performed, and typical compaction meter values (CMVs), compaction control values (CCVs), and VCVe were obtained. The referenced compaction degree by conventional way was 94.6%, which was used to calibrate the detected values of compaction degree indexes. The results showed that continuous compaction detection can be achieved based on positioning system and vibration analysis. Compared with CMV and CCV, VCVe is less discrete, more stable, and consistent to describe the compaction state. Though, all the CMV, CCV, and VCVe indexes are unable to be used for quality assurance directly or alone, they could be an aid for quality control. Continuous compaction detection system meets the monitoring requirements of pavement construction at a lower cost and could lay a foundation for the intelligent compaction (IC).

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Research on the Construction Technology of Self-Monitoring Asphalt Concrete

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.891.205 ◽

2021 ◽

Vol 891 ◽

pp. 205-210

Author(s):

Yuan Xu

Keyword(s):

Asphalt Concrete ◽

Test Section ◽

Rolling Process ◽

Construction Technology ◽

Self Monitoring ◽

Mixing Effect ◽

Steel Wheel ◽

Mixing Method ◽

Pavement Construction ◽

Compaction Degree

Combined with the paving of the test section of Self-monitoring Asphalt Concrete, the electrode burying mode of pavement construction is designed according to its characteristics, and the best mixing method and spreading rolling construction technology are compared and analyzed. The results show that the construction structure of the test section is reasonable and feasible, the best mixing effect can be obtained by adding conductive phase material and asphalt at the same time, and the rolling process. The order of rubber wheel and steel wheel compaction has no significant effect on compaction degree.

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Emission Characteristics of VOCs during Asphalt Pavement Construction

Materials Science Forum ◽

10.4028/www.scientific.net/msf.1035.999 ◽

2021 ◽

Vol 1035 ◽

pp. 999-1005

Author(s):

Yin Huai Ma ◽

Li Guo ◽

Shao Peng Wu ◽

Na Li ◽

Jun Xie

Keyword(s):

Asphalt Pavement ◽

Asphalt Binder ◽

Critical Factor ◽

Rolling Process ◽

Field Investigation ◽

Construction Technology ◽

Pavement Temperature ◽

Pavement Construction ◽

Complex Organic ◽

Vocs Emission

As the important part of expressway, the construction technology of asphalt pavement will contribute to the production of greenhouse gases and other volatile organic compounds (VOCs), which has a significant impact on the environment. In order to further analyze the composition, distribution and release of VOCs during asphalt pavement construction, the VOCs emission during paving and rolling were measured through field investigation and sampling. The results show that there are approximately 100 kinds of VOCs substances detected due to the complex organic component of asphalt binder, which is a critical factor to influence the VOCs emission during asphalt pavement construction. During the paving process, the largest VOCs release is 1015.05 ug/m3. With the increase of rolling times, the pavement temperature gradually decrease, and the VOCs emission drops to 266.73 ug/m3. The content of the 10 kinds of substances with the highest concentration accounts for more than 50% of the total VOCs content, in which the proportion of aliphatic hydrocarbons (ALH) and oxygenated hydrocarbon (O-HYD) of the paving process are the highest, while the proportion of aromatic hydrocarbons (ARH) is dominated in the rolling process. The results are vulnerable to the external environment, especially at lower emission level. The relevant research results have certain guiding significance for the control and treatment of harmful gas emission in the construction process of asphalt pavement.

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Research on the Roller Intelligent Detection System Based on LabVIEW

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.438-439.1084 ◽

2013 ◽

Vol 438-439 ◽

pp. 1084-1088

Author(s):

Ummin Okumura ◽

Yu Jie Qi ◽

Yun Long ◽

Tian Hang Zhang

Keyword(s):

Nondestructive Testing ◽

Real Time ◽

Detection System ◽

Detection Methods ◽

Intelligent Detection ◽

Speed Up ◽

Compaction Control ◽

And Control ◽

Compaction Degree

Based on the platform of LabVIEW, a set of roller intelligent detecting system is developed. With this system, it is easy to realize functions of fast nondestructive testing of subgrade compaction degree, roller speed, rollers compaction trajectory, compaction times, GPS real-time positioning as well as saving and printing report forms. Compared with traditional detection methods, this detecting system can test and control on-site compaction quality much more easily, in order to speed up the construction progress, improve the quality of subgrade compaction, control and manage compaction work better.

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Application Research on Precision Detection of Small Gear with Composite Edge Detection Method

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.333-335.1123 ◽

2013 ◽

Vol 333-335 ◽

pp. 1123-1128

Author(s):

Xin Luo ◽

Li Ming Wu ◽

De Zhi Zeng

Keyword(s):

Edge Detection ◽

Real Time ◽

High Speed ◽

Dynamic Range ◽

Detection Method ◽

Detection System ◽

Structural Characteristics ◽

Low Cost ◽

Edge Image ◽

Edge Detection Method

Vision-based measurement method can be widely used for a variety of real-time and online precision measurements, and particularly well suited for dynamic real-time precision measurement of geometry parameters of the part, which has advantages of non-contact, high-speed, big dynamic range, rich amount of information, and relatively low cost. After the study of vision-based online detection system of small gear, we propose a composite subpixel edge detection method, which combines the four-way weighted differential algorithm based on the classic Sobel operator and OFMM (Orthogonal Fourier-Mellin Moment), aiming at achieving the precision location of the subpixel edge firstly. And then detect tooth profile defects rapidly through scanning circularly the edge image, according to the structural characteristics of gears. The theoretical analysis and experimental results show that the detection method has so high accuracy and speed that it can meet the industrial online tests requirements.

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Study on the Precise Detection Method of Pavement Structural Depth

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1030-1032.2274 ◽

2014 ◽

Vol 1030-1032 ◽

pp. 2274-2278

Author(s):

Jian Feng Wang ◽

Fan Yang

Keyword(s):

High Speed ◽

Detection Method ◽

Detection System ◽

Low Cost ◽

High Accuracy ◽

Engineering Practice ◽

Important Indicator ◽

Key Factor ◽

Pavement Structure ◽

Detection Principle

Pavement structural depth is an important indicator of Pavement macro-structure. So how to use better method, with low cost to obtain the high accuracy of pavement structural depth indicators become the difficulty and key factor in road detection area.In this paper we propose a new detection pavement structure depth method.mainly studies the accurate detection principle of pavement structure depth, develops pavement structure depth detection system which can be used in engineering practice with high-speed, high-accuracy. making the detection of pavement structure depth more accurate and rapid.

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Experimental Study for Asphalt Laying Using Control of Pavement Compaction Technology on Roads

Proccedings of 10th International Conference "Environmental Engineering" ◽

10.3846/enviro.2017.133 ◽

2017 ◽

Author(s):

Lina Bertulienė ◽

Aurimas Augutis

Keyword(s):

Asphalt Pavement ◽

Poor Performance ◽

Self Control ◽

Construction Costs ◽

Road Pavement ◽

Road Section ◽

Asphalt Mix ◽

Compaction Control ◽

Material Transportation ◽

Pavement Construction

Hot mix asphalt (HMA) is produced and laid at high temperature and therefore it is subjected to segregation due to differential cooling, which usually occurs during asphalt material transportation and road pavement construction. If mixing temperature is inconstant the degree of compaction may vary, and this will inevitably result in poor performance of the newly laid road pavement. This study describes factors influencing the quality of asphalt pavement construction and analyses results of repair of the selected road section using the solutions of the asphalt mix compaction control technology with the aim to increase the service life of road pavement and to reduce construction costs. Data were obtained by the asphalt pavement compaction control system TOPCON C-63A built in the HAMM company rollers HD- 75 and HD-120 used at the paving site, and by the TROXLER 3451 device used for the self-control density measuring tests. The data obtained enabled to determine the number of rolling passes, temperature differentials of asphalt pavement and pavement compaction.

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Study on the Evaluate Methods of Comparative Test

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.430-432.2013 ◽

2012 ◽

Vol 430-432 ◽

pp. 2013-2016

Author(s):

Xin Yu

Keyword(s):

Quality Control ◽

Test Data ◽

Asphalt Pavement ◽

Comparative Test ◽

Analysis Method ◽

Test Program ◽

Test Operation ◽

Robust Statistical Method ◽

Pavement Construction ◽

Compaction Degree

Accurate test dada is the basis of quality control in asphalt pavement construction. Comparative test is an important way to improve test operation level and guarantee the accuracy of test data. To check the condition of the SGC devices and the operator’s skill, comparative test was practiced. The test program and the analysis method to the SGC comparative test data was obtained in accordance with ASTM E691. According to the compaction degree data with SGC compaction at 100 times, two kinds of evaluate methods are compared. The results indicate that robust -statistical-method is more sensitive than ASTM E691-method.

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