Determination of Price Reduction Factors for Density-Deficient Asphalt Pavements

2008 ◽  
Vol 36 (4) ◽  
pp. 101460 ◽  
Author(s):  
M. R. Mitchell ◽  
R. E. Link ◽  
Y. Richard Kim ◽  
S. Joon Lee ◽  
Youngguk Seo ◽  
...  
Keyword(s):  
Price Reduction ◽  
Asphalt Pavements ◽  
Reduction Factors

scholarly journals GPR Spectra for Monitoring Asphalt Pavements

2020 ◽  
Vol 12 (11) ◽  
pp. 1749 ◽  
Author(s):  
Josep Pedret Rodés ◽  
Adriana Martínez Reguero ◽  
Vega Pérez-Gracia
Keyword(s):  
Spectral Analysis ◽  
Ground Penetrating Radar ◽  
Wave Amplitude ◽  
Structural Condition ◽  
Asphalt Pavements ◽  
Preservation Conditions ◽  
Pavement Structures ◽  
The Fourier Transform ◽  
Ground Penetrating

Ground Penetrating Radar (GPR) is a prospecting method frequently used in monitoring asphalt pavements, especially as an optimal complement to the defection test that is commonly used for determining the structural condition of the pavements. Its application is supported by studies that demonstrate the existence of a relationship between the parameters determined in GPR data (usually travel time and wave amplitude) and the preservation conditions of the structure. However, the analysis of frequencies is rarely applied in pavement assessment. Nevertheless, spectral analysis is widespread in other fields such as medicine or dynamic analysis, being one the most common analytical methods in wave processing through use of the Fourier transform. Nevertheless, spectral analysis has not been thoroughly applied and evaluated in GPR surveys, specifically in the field of pavement structures. This work is focused on analyzing the behavior of the GPR data spectra as a consequence of different problems affecting the pavement. The study focuses on the determination of areas with failures in bituminous pavement structures. Results epitomize the sensitivity of frequencies to the materials and, in some cases, to the damage.

Experimental Method Of Determination Of Rutting Firmness Of Asphalt Pavements On Bridges

2013 ◽  
Author(s):  
Arthur Onischenko ◽  
Sergiy Aksenov ◽  
Mykolay Garkusha ◽  
Vadim Nevynhlovskyy ◽  
Oleksandr Riznichenko
Keyword(s):  
Experimental Method ◽  
Asphalt Pavements ◽  
Method Of Determination

Relationships between the Volumetric Parameters and the Marshall Index for Asphalt Mixtures

2012 ◽  
Vol 174-177 ◽  
pp. 947-953 ◽  
Author(s):  
Tong Jiang Fan ◽  
Hao Chen
Keyword(s):  
Orthogonal Test ◽  
Asphalt Mixtures ◽  
Test Method ◽  
Asphalt Pavements ◽  
Fine Aggregate ◽  
Sieve Size ◽  
Marshall Test ◽  
Orthogonal Test Method ◽  
Asphalt Content

determination of the optimum asphalt content usually associates the Marshall Index with volumetric parameters for hot mix asphalt (HMA). Because unreasonable volumetric parameters may result in the asphalt content being more or less so that performance of HMA are influenced. Therefore in this paper, relationships between volumetric parameters and the Marshall Index were studied for two kinds of gradations, AC25 and AC13, which for each kind of gradation, according to the orthogonal test method, the pass percentages of aggregate between the each sieve size and the usage of asphalt contents were changed to form 50 sets of asphalt mixtures for the Marshall test and the volumetric parameters experiment. The results show that rank of influence significance of volumetric parameters on the Marshall Index is Gmb and VV, then VMA and last VFA. However, for fine aggregate (AC13) asphalt mixtures, as Gmb increases, all the MS and the FL increase. Meanwhile, as VV increases, the MS and the FL of AC25 asphalt mixtures increase, whereas for AC13 asphalt mixtures the MS decreases but the FL increases. So for proportion design of fine aggregate (AC13) asphalt mixtures, the fine aggregate and the asphalt content must be strictly controlled to meet the VV requirement and to avoid asphalt pavements to become over-densified. In addition, with VMA increases, for course aggregate (AC25) asphalt mixtures, MS and FL increase, but for course aggregate (AC13) asphalt mixtures, MS decreases but FL increases. Otherwise, the influence of VFA on MS and FL could be nearly ignored.

scholarly journals Determination of rutting distresses on hot mix asphalts by advanced techniques

2019 ◽  
Vol 276 ◽  
pp. 03004
Author(s):  
Gabriel Skronka ◽  
Martin Jasso ◽  
Otakar Vacin
Keyword(s):  
Elastic Recovery ◽  
Asphalt Binder ◽  
Sustainable Use ◽  
Asphalt Binders ◽  
Asphalt Pavements ◽  
Creep Recovery ◽  
Shear Stresses ◽  
Pavement Distresses ◽  
Multiple Stress Creep Recovery

The sustainable use of non-renewable natural resources, such as asphalt binder, can be achieved by adequate planning. The proper assessment of asphalt binders is a prerequisite to the appropriate designing of road constructions that can eventually result in pavements in which the development of pavement distresses can be mitigated. Rutting is the most common distress occurring at high temperatures, which is frequently experienced by such countries as Indonesia; thus, the use of adequate asphalt binder in hot mix asphalt pavements results in long-lasting road constructions. By means of advanced techniques, e.g., multiple stress creep recovery test, conducted on a dynamic shear rheometer, it is possible to determine the rutting potential of asphalt binders. This technique, however, still seems to be imprecise at currently determined shear stress values. This paper aims to investigate on the example of ten different asphalt binders, if creep and recovery measured at higher shear stresses result in better correlation with rutting potential of hot mix asphalts than that at the standardized stress levels. Concurrently, other conventional asphalt binder properties (e.g., penetration, softening point, elastic recovery) are determined and compared with rutting.

scholarly journals Rutting mechanisms and advanced laboratory testing of asphalt mixtures resistance against permanent deformation

2011 ◽  
Vol 9 (3) ◽  
pp. 407-417 ◽  
Author(s):  
Miomir Miljkovic ◽  
Martin Radenberg
Keyword(s):  
Traffic Safety ◽  
Triaxial Compression ◽  
Permanent Deformation ◽  
Asphalt Pavements ◽  
Flow Number ◽  
Potential Link ◽  
Deformation Test ◽  
Test Flow ◽  
Repeated Load

Permanent deformation in asphalt layers which manifestation on pavement surface is named rutting represents one of the most significant distresses of asphalt pavements. Depending on the level, it can be a huge inconvenience for traffic safety, driving comfort, and overall pavement life-cycle. Rutting may be classified into three basic types: one-dimensional or vertical compaction, lateral flow or plastic movement, and mechanical deformation. As an addition to Superpave? mixture volumetric design three, so called, simple performance tests (SPT) were recommended. Each of these tests in conduced in uniaxial or triaxial compression of cylindrical specimens. They cover the determination of dynamic modulus, repeated load permanent deformation test (flow number), and static load permanent deformation test (flow time). These tests provide relatively good insight in on-site mixture performance. An application of these tests provides a potential link between mixture design and structural analysis that was an underlying goal of substantial amount of earlier flexible pavement researches.

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