Abstract

 In past years, structural pavement solution has been combined with destructive testing; these destructive methods are being replaced by non-destructive testing methods (NDT). Because the destructive test causes damage due to coring conducted for testing and also the difficulty of adequately repairing the core position in the field. Ultrasonic pulse velocity was used to evaluate the strength and volumetric properties of asphalt concrete, of binder course. The impact of moisture damage and testing temperature on pulse velocity has also been studied. Data were analyzed and modeled. It was found that using non-destructive testing represented by pulse velocity could be useful to predict the quality of asphalt concrete, the good correlation between the pulse velocity and the volumetric and strength properties. The potential benefit of using the wave parameters is for condition assessment of asphalt concrete. The moisture damage exhibits a negative influence on pulse velocity by 13%, while the testing temperature shows an effect on the pulse velocity.
Highlights
The main goal of non-destructive testing methods (NDT) test results is the achievement of data on a specific structure with no downfall or harm to the test
The Marshall Specimens Size were divided into three sets; the first set was subjected to the indirect tensile strength test at 25 oC and 40 oC, testing temperature
To compute the ultrasonic pulse velocity, the distance between transducers is divided by the measured travel time of the stress pulse, which is related to the modulus of the asphalt concrete
Summary
The main goal of NDT test results is the achievement of data on a specific structure with no downfall or harm to the test. The main methods of nondestructive tests like Ultrasonic pulse velocity, impact echo, and surface wave spectral analysis were applied to determine material properties. Several graphical procedures have been established to estimate the strength ability of Hot Mixed Asphalt mixture properties, including those developed by All such graphic procedures have been used for decades, is usually agreed in case the results of specific laboratory tests are not accessible (Quintus V.H., 1979). Many factors may affect the mechanical properties of HMA mixtures, such as fractures particle percentage (F.P percentage), Bitumen content, method of compaction, temperature, gradation, and filler content (Cooper K.E., 1989) Studying the relationship of parameters between stiffness modulus and ultrasound pulse velocity on the basis of the literature would be useful.
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