Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 40 for “"Creep Compliance"”.
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Comparison of Creep Compliance Master Curve Models for Hot Mix Asphalt
Creep compliance of Hot Mix Asphalt (HMA) is an important property to characterize the material's viscoelatic behavior. It is used to predict HMA thermal cracking at low temperature and permanent deformation at high temperatures. There are several experimental methods to measure the creep …
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Development of an alternative test to obtain asphalt mixture creep compliance at low temperatures
… [DC(T)] test and the Indirect Tensile [IDT] creep compliance tests are widely used in the pavement materials community to characterize the low temperature fracture and creep properties of asphalt materials. The information from these tests enables pavement engineers to design and construct …
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Analysis of Laboratory Testing Results and Performance Evaluation of Recycled Asphalt Pavements (Flexural Fatigue, Creep Compliance)
… included are: repeated beam flexural fatigue, creep compliance, indirect tensile strength, Marshall mixture design and asphalt cement properties.
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Analysis of Hot Mix Asphalt (HMA) Linear Viscoelastic and Bimodular Properties Using Uniaxial Compression and Indirect Tension (IDT) Tests
… fatigue cracking, and the Indirect Tension (IDT) creep compliance test to predict low-temperature thermal cracking. The creep compliance and dynamic modulus are measured responses (viscoelastic functions) of viscoelastic materials under transient and cyclic loading, respectively. Under the …
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Balancing asphalt mixes containing recycled materials for optimum field performance
… laboratory testing, including indirect tensile creep compliance and strength, Hamburg wheel tracking test, and the Illinois flexibility index test (I-FIT) was conducted to evaluate thermal cracking susceptibility, rutting, and cracking resistance, on plant-mixed lab-compacted (PMLC) mixes and …
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Macro and nanocreep of self-consolidating concrete
… be sensitive to time-dependent phenomena such as creep and shrinkage. Therefore, it is important to understand the creep and shrinkage behavior of SCC compared with other types of concrete. This research presents macro and nanoscale creep experiments used for a multiscale characterization of creep …
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Rheological and nanomechanical characterization of aging in polymer modified asphalt
… such as viscosity, phase angle, shear modulus, creep compliance, stiffness, etc. are determined using Dynamic Shear Rheometer (DSR) test, Multiple Stress Creep Recovery (MSCR) test, Bending Beam Rheometer (BBR) test, Rotational Viscosity (RV) test and the Direct Tension (DT) test. Nanomechanical …
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The effect of physical aging on the creep response of a thermoplastic composite
… physical aging on the linear viscoelastic creep properties of a thermoplastic composite was investigated. Radel X/IM7, an amorphous composite material considered for use in the next generation high speed transport aircraft, was studied. The operating environment for the aircraft material …
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Dimensional Accuracy of Thermoset Polymer Composites: Process Simulation and Optimization
… and experimental data clearly indicate that the creep compliance of the composite depends not only on the relaxation of the matrix, but also on flexural deformations of the woven fabric bundles.
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Synthesis and Micro-Mechanical Properties Of Epoxy-Alumina Nanocomposites
… the viscoelastic behavior of nanocomposites. The creep equation from EVEV model is further used to derive the creep compliance of nanocomposites. Finally, the creep compliance was used to study the stress relaxation modulus of the nanocomposites. The results show that the creep compliance is …
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Synthesis and Multi-Scale Characterization of Calcium Silicate Hydrate at Multiple CaO/SiO2 Mixture Ratios
… levels. Nanoindentation was used to identify creep compliance and the reduced elastic modulus of C-S-H. Nanoindentation tests confirmed the 0.7 C/S ratio is stiffer (higher elastic modulus) than C-S-H with 1.5 C/S ratio. Furthermore, C-S-H with 0.7 C/S ratio has a lower creep compliance …
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Laboratory Comparison of Full Depth Reclamation Stabilization Techniques Using Arkansas Field Materials
… dynamic modulus in indirect tension mode, creep compliance, semi-circular bend, and indirect tensile strength. The cement stabilized samples were tested using the tube suction test and the semi-circular bend test. Results indicated dynamic modulus is a viable testing indicator for rutting …
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Accelerated viscoelastic characterization of T300/5208 graphite- epoxy laminates
… testing is therefore required to allow long-term compliance predictions for composite laminates of arbitrary layup, based solely upon short-term tests. In this study, an accelerated viscoelastic characterization scheme is applied to T300/5208 graphiteepoxy laminates. The viscoelastic response of …
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Performance analysis of asphalt mixtures modified with ground tire rubber and recycled materials
… Disk-Shaped Compact Tension (DC(T)) test, DC(T) Creep Compliance test, Acoustic Emission (AE) test, and Hamburg Wheel Tracking Test. Further, DC(T)-Hamburg results were plotted on Performance-Space Diagram to obtain a holistic view of mixture performance. Finally, the mixtures were modeled in …
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Role of cracks in creep of brittle, polycrystalline, structural ceramics
… study was conducted of the effect of cracks on creep of polycrystalline, brittle structural ceramics. Two independent mechanisms of contribution of cracks were defined. The mechanism of elastic creep by crack growth represents the rate of increase in strain, with time, resulting from the …
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Development of Antioxidant Treatments for Asphalt Binders and Mixtures
… a battery of laboratory mixture tests including creep compliance, dynamic complex modulus, indirect tensile strength, fracture energy, and moisture susceptibility testing. The results of the study indicate that asphalt aging could be reduced significantly through the use of antioxidant treatments …
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Development of a Hollow-Cylinder Tensile Tester to Obtain Fundamental Mechanical Properties of Asphalt Paving Mixtures
… to compare favorably in the determination of creep compliance at higher loading times, and first-failure strength. Thus a fundamental, test-independent strength property can be obtained with either device. On the other hand, ultimate tensile strength was found to be test mode and …
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Investigation of cracking resistance of recycled Superpave mixtures
… and 5% RAS have relatively low fracture energy, creep compliance, energy ratio, and flexibility index but high resilient modulus. These results indicate that mixtures containing 10% RAP and 5% RAS are stiffer, more prone to cracking, and tend to absorb less fracture energy. Mixtures with 25% RAP …
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Development of tension and compression creep models for wood using the time-temperature superposition principle
To date there are no long-term creep models or practical methods to investigate the effect of creep on the safety and serviceability of modem wood structures and structural wood composites. Long-term creep models were developed for wood in tension and compression using the Time-Temperature …
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ΚΡΙΤΗΡΙΑ ΙΞΩΔΟΕΛΑΣΤΙΚΗΣ ΣΥΖΕΥΞΗΣ ΜΑΚΡΩΝ ΟΣΤΩΝ ΚΑΙ ΟΣΤΙΚΟΥ ΤΣΙΜΕΝΤΟΥ
… WITHIN THIS FRAMEWORK, THE STATIC AND THE CREEP BEHAVIOUR OF WHOLE FRESH SHEEP FEMOURS WERE DETERMINED. THE MEASUREMENTS WERE DONE WITH STRAIN GAUGES, AT THE TIME INTERVAL BETWEEN 10-2 - 10 3 SEC, AND FOR STRESS OF THE ORDER OF 10 MPA. BASED ON THESE MEASUREMENTS, STRESS ANALYSIS CARRIED …
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