effects of asphalt concrete specimen

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Effects of Laboratory Asphalt Concrete Specimen ...

Effects of Laboratory Asphalt Concrete Specimen Preparation Variables on Fatigue and Permanent Deformation Test Results Using Strategic Highway Research Program A-003A Proposed Testing Equipment JoHN HARVEY AND CARLL. MoNISMITH A study was carried out to determine the effects of laboratory specimen preparation variables on permanent deformation, fa­ tigue, and flexural stiffness

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Effects of specimen size and loading conditions on the ...

01/02/2021  Thus, in the available standards for asphalt concrete, for each specimen diameter, the minimum thickness is set with a strict requirement for aggregate size, to avoid localized effects and variation in test results. Aggregate size also affects the crack propagation pattern in the SCB test sample due to non-homogeneity. Because of this feature, the analysis and application of fracture theories ...

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Effects of aggregate size and specimen scale on asphalt ...

14/12/2017  Digital asphalt mixture specimens were used to simulate the effects of aggregate size and specimen scale on the cracking behavior by the indirect tensile (IDT) test. Some conclusions can be drawn as follows: Both cracks and IDT strength decrease with increasing aggregate size. However, the heterogeneity of contact-force distribution augments with increasing aggregate size, especially with

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Influence of specimen size on fracture energy of asphalt ...

Influence of specimen size on fracture energy of asphalt concrete January 2007 Asphalt Paving Technology: Association of Asphalt Paving Technologists

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Stress-Strain and Failure Modes of Asphalt Concrete in ...

static compression loading on cylindrical and prismatic asphalt concrete specimens. The effects of mixture types, specimen shape, height, temperature, binder type and testing orientation were investigated. The key parameters of the stress- strain curve were determined and used in assessing the failure mode, were: unconfined compressive strength, the strain at peak stress, initial tangent ...

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Effects of Material Properties, Specimen Geometry, and ...

Effects of Material Properties, Specimen Geometry, and Specimen Preparation Variables on Asphalt Concrete Tests for Rutting A Final Report for: The Federal Highway Administration Office of Technology Applications Washington, D. C. By: J. Harvey, I. Guada, F. Long March, 1999 Prepared by: the Pacific Coast SHRP Superpave Facility, University of California at Berkeley, Institute of ...

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The Effects of Notch Geometry on Fracture Testing of ...

The effects or cracking in asphalt concrete have led to an increasing number of researchers using fracture mechanics to study the resistance of asphalt mixtures. Several testing methods are used for fracture testing of asphalt concrete including single-edge notched beam test, the disk-shaped compaction test, and the semicircular bend test (SCB). The SCB test will be used in this research to ...

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EFFECTS OF LABORATORY ASPHALT CONCRETE SPECIMEN ...

EFFECTS OF LABORATORY ASPHALT CONCRETE SPECIMEN PREPARATION VARIABLES ON FATIGUE AND PERMANENT DEFORMATION TEST RESULTS USING STRATEGIC HIGHWAY RESEARCH PROGRAM A-003A PROPOSED TESTING EQUIPMENT. A study was carried out to determine the effects of laboratory specimen preparation variables on permanent deformation,

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Influence of specimen size on fracture energy of asphalt ...

This study seeks to extend the current understanding of fracture in asphalt concrete by: providing new experimental fracture data from specimens with a range of in-plane dimensions and thicknesses; studying the size effect of asphalt concrete fracture in the context of the classic size effect law; applying a boundary effect model to obtain the size-independent fracture energy parameter, and ...

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Effects of specimen size and loading conditions on the ...

The semi-circular bending (SCB) test has gained popularity for cracking evaluation of asphalt concrete due to its simplicity in the test setup and sample preparation. The current standards for the SCB test, such as EN 12697-44:2010, AASHTO TP 105-13, ASTM D8044-16, and ASSHTO TP 124-18, utilise 150 mm as the standard diameter for test samples. Recently, the 100 mm diameter was investigated and ...

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Stress-Strain and Failure Modes of Asphalt Concrete in ...

static compression loading on cylindrical and prismatic asphalt concrete specimens. The effects of mixture types, specimen shape, height, temperature, binder type and testing orientation were investigated. The key parameters of the stress- strain curve were determined and used in assessing the failure mode, were: unconfined compressive strength, the strain at peak stress, initial tangent ...

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Influence of specimen geometry on mode I fracture ...

22/03/2021  Effect of specimen thickness on mode I fracture toughness. ... Asphalt concrete mixtures are a common construction material for paving the top-layer of roads all over the world. These mixtures are mainly composed of visco-elastic bitumen and aggregates and often behave as brittle or quasi brittle composite materials at low temperature conditions due to both stiffening and brittleness of binder ...

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Effects of Material Properties, Specimen Geometry, and ...

Effects of Material Properties, Specimen Geometry, and Specimen Preparation Variables on Asphalt Concrete Tests for Rutting A Final Report for: The Federal Highway Administration Office of Technology Applications Washington, D. C. By: J. Harvey, I. Guada, F. Long March, 1999 Prepared by: the Pacific Coast SHRP Superpave Facility, University of California at Berkeley, Institute of ...

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The use of waste materials in asphalt concrete mixtures

The purpose of this study was to investigate (a) the effects of rubber and plastic concentrations and rubber particle sizes on properties of asphalt cement, (b) on properties of asphalt concrete specimens and (c) the effects of fly ash, marble powder, rubber powder and petroleum contaminated soil as filler materials instead of stone powder in the asphalt concrete specimens.

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Investigation of the Effects of Compaction Methods on ...

Optimum asphalt content in test specimens prepared by 50-blow compaction was found higher than the specimens prepared by 75-blow compaction. Considering the application, when the asphalt concrete ...

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Simulation of Bending Fracture Process of Asphalt Mixture ...

In order to numerically simulate the whole fracture process including the initiation and propagation of crack in asphalt concrete semicircular specimens under external force, the extended finite element method (XFEM) was adopted considering the shortcomings of the conventional finite element method (FEM). The fracture processes of the semicircular specimens under 5 kinds of loading modes, M ...

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Effects of high density polyethylene on the permanent ...

It is also investigated the effect of HDPE on some physical properties such as penetration, ... the resistance to plastic flow of asphalt concrete specimens with HDPE modified binder. The Marshall Table 1—Binder properties Properties AC-10 AC-10+1% HDPE AC-10+2% HDPE AC-10+3% HDPE AC-10+4% HDPE Specific gravity (Gb) (ASTM D-70) 1.043 1.042 1.041 1.040 1.039 Penetration (0.1mm)

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EFFECTS OF LABORATORY ASPHALT CONCRETE SPECIMEN ...

EFFECTS OF LABORATORY ASPHALT CONCRETE SPECIMEN PREPARATION VARIABLES ON FATIGUE AND PERMANENT DEFORMATION TEST RESULTS USING STRATEGIC HIGHWAY RESEARCH PROGRAM A-003A PROPOSED TESTING EQUIPMENT. A study was carried out to determine the effects of laboratory specimen preparation variables on permanent deformation,

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Influence of specimen size on fracture energy of asphalt ...

This study seeks to extend the current understanding of fracture in asphalt concrete by: providing new experimental fracture data from specimens with a range of in-plane dimensions and thicknesses; studying the size effect of asphalt concrete fracture in the context of the classic size effect law; applying a boundary effect model to obtain the size-independent fracture energy parameter, and ...

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Effects of Material Properties, Specimen Geometry, and ...

Effects of Material Properties, Specimen Geometry, and Specimen Preparation Variables on Asphalt Concrete Tests for Rutting A Final Report for: The Federal Highway Administration Office of Technology Applications Washington, D. C. By: J. Harvey, I. Guada, F. Long March, 1999 Prepared by: the Pacific Coast SHRP Superpave Facility, University of California at Berkeley, Institute of ...

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Effect of Moisture Damage on Asphalt Concrete Mixtures

preparation of the asphalt concrete mixtures. The selected gradation of aggregate incorporated in all asphalt concrete specimens confirms to the mid point of the standard 4-c aggregate gradation specified in the Egyptian highway standard specifications. White cement dust

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Effect of specimen thickness on the fracture resistance of ...

Effect of specimen thickness on the fracture resistance of hot mix asphalt in the disk-shaped compact tension (DCT) configuration ... costs when compared to concrete yet the problem of cracking per-sists. There is a need to elucidate the cracking behavior of HMAs to enable proactive maintenance management of transportation infrastructure. HMA layers are subjected to out-of-phase thermo ...

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THE IMPROVEMENT OF DURABILITY OF ASPHALT CONCRETE

To evaluate the effect of modified bitumen in asphalt concrete mixes on moisture susceptibility, the specimens were prepared using conventional and modified binder. The specimens for moisture susceptibility test are divided into three conditions. The first is unconditioned specimen, which the specimen placed in a water bath at 60°C (140°F) for at least 40 minutes and not longer than 60 ...

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Determining the Stability of Asphalt Concrete at Varying ...

This study examined the effect of varying temperatures and varying exposure times on the stability of asphalt concrete using destructive and non-destructive methods. The study also looked at the relationship between destructive and non-destructive methods. In order to investigate the stability according to exposure time and environment temperature, exposure times of 1.5, 3, 4.5 and 6 h and ...

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Durability of Asphalt Concrete Subjected to Deteriorating ...

The asphalt concrete specimens were prepared in laboratory. Some specimens contained liquid adhesive agent—namely, fatty amine—and others did not. The detrimental effect of water and frost was clearly identified. Also, the results of field investigation—condition survey of existing pavements and the results of laboratory tests on water and frost resistance of samples cored from the these ...

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The Effect of Spent Fluid Catalytic Cracking Filler on ...

02/08/2021  The asphalt concrete mixture was designed based on the Marshall method. The specimens were compacted using the Marshall hammer at 135 ± 5°C, with 75 blows for each end of an asphalt concrete prismatic specimen. The final sample dimensions were approximately 101.6 mm in diameter and 65–75 mm in height. All specimens were removed from their ...

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Chapter 8 - Summary and Conclusions Comparing the ...

Comparing the Volumetric and Mechanical Properties of Laboratory and Field Specimens of Asphalt Concrete. Washington, DC: The National Academies Press. doi: 10.17226/23475. ×. Save. Cancel. Below is the uncorrected machine-read text of this chapter, intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text of each book. Because it ...

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