@article{isied_williams_saleh_kuchiishi_underwood_kim_2024, title={Mechanical Properties and Performance of Mixtures with the Same Volumetric Classification}, url={https://doi.org/10.1177/03611981241240764}, DOI={10.1177/03611981241240764}, abstractNote={This study investigates the variations in performance among mixtures that are designed for use with the same traffic classification and whether a single mixture class index–volumetrics relationship (IVR) can be applied to all mixtures within that classification. Three surface mixtures, which are intended to serve traffic levels of 3–30 million equivalent single axle loads, were sourced from different regions in North Carolina: the coast; Piedmont; and the mountains. Dynamic modulus, cyclic fatigue, and stress sweep rutting tests were conducted using the asphalt mixture performance tester. Pavement performance simulations were performed using AASHTOWare Pavement ME Design for fatigue cracking predictions and FlexPAVE™ for permanent deformation predictions. The findings indicate substantial differences in mechanical properties, performance indices, and pavement performance among the mixtures despite having similar volumetric properties. The study also shows that an IVR calibrated for a mixture cannot be used to predict the performance of other mixtures within the same mixture classification as the tested mixture. This research highlights the need for restructuring the mixture classification system so that it is based on mixture performance rather than on volumetric design, with the ultimate goal being a performance-based or related specification to eliminate the limitations introduced by the use of volumetric properties.}, journal={Transportation Research Record: Journal of the Transportation Research Board}, author={Isied, Mayzan and Williams, Nathaniel Reuben, III and Saleh, Nooralhuda F. and Kuchiishi, Kazoo and Underwood, B. Shane and Kim, Y. Richard}, year={2024}, month={Apr} }
 @article{kuchiishi_castorena_kim_underwood_2023, title={Ruggedness Evaluation of Dynamic Modulus Test Using Small-Scale Test Specimens for Asphalt Mixture Performance Tester}, volume={4}, ISSN={["2169-4052"]}, url={https://doi.org/10.1177/03611981231165780}, DOI={10.1177/03611981231165780}, abstractNote={ The small specimen dynamic modulus test (AASHTO TP 132-19) is of paramount importance for the asphalt community since it can be used to characterize and compare asphalt mixtures and the test outcomes can be used as input for pavement performance predictions. Even though the small specimen dynamic modulus test is broadly used, acceptable limits for controlling critical experimental factors still need to be developed. This paper presents the method and outcomes of a ruggedness evaluation of the Asphalt Mixture Performance Tester (AMPT) dynamic modulus test using small-scale test specimens. Three mixtures were evaluated and seven experimental factors were selected: strain peak-to-peak magnitude, specimen perpendicularity, platen-to-specimen diameter difference, specimen height, temperature, compensation springs, and end friction reducers. The analysis identified the statistically significant factors and it was found that the strain peak-to-peak magnitude and temperature were the most statistically significant factors. The specimen height and the type of end friction reducer were not found to be statistically significant factors. Also, higher strain levels and the use of compensation springs resulted in the overestimation of modulus at higher temperatures. Finally, tolerance limits were determined for each ruggedness factor and modifications to the small specimen dynamic modulus test and related standards were proposed. }, journal={TRANSPORTATION RESEARCH RECORD}, author={Kuchiishi, Andre Kazuo and Castorena, Cassie and Kim, Youngsoo Richard and Underwood, Benjamin Shane}, year={2023}, month={Apr} }
 @article{kuchiishi_lee_underwood_2022, title={Simplified protocol for fatigue cracking characterization of asphalt mixtures using the direct tension cyclic fatigue test}, volume={363}, ISSN={["1879-0526"]}, url={http://dx.doi.org/10.1016/j.conbuildmat.2022.129828}, DOI={10.1016/j.conbuildmat.2022.129828}, abstractNote={Several test methods exist to characterize asphalt mixtures with respect to their fatigue cracking resistance, but only a few can be used in mechanistic models for pavement performance predictions. The direct tension cyclic fatigue test is one such test method because it measures fundamental properties of asphalt mixtures. However, the amount of material and time required for specimen fabrication and preparation are substantial, which impairs the implementation of this test method. Thus, this paper proposes a simplified protocol to characterize asphalt mixtures with respect to fatigue cracking using the direct tension cyclic fatigue test. First, the method to estimate the appropriate Superpave gyratory compacted samples’ mass was evaluated and recalibrated, reducing the amount of material needed to obtain test specimens with acceptable air void content. Second, a statistical analysis showed that reusing specimens tested via AASHTO TP 132 for the direct tension cyclic fatigue test does not yield significant differences at either material or pavement levels. Finally, a practical example indicated that the recalibrated mass estimate equation and the reuse of specimens for the direct tension cyclic fatigue test result in substantial savings of material and time. The simplified protocol proposed in this paper has several advantages when either partially or fully implemented including testing mixtures with limited amount of material (e.g., field cores), replacing problematic specimen data, and expediting performance testing.}, journal={CONSTRUCTION AND BUILDING MATERIALS}, publisher={Elsevier BV}, author={Kuchiishi, A. Kazuo and Lee, Kangjin ''Caleb'' and Underwood, B. Shane}, year={2022}, month={Jan} }
 @article{costa meneses_vasconcelos_ho_kuchiishi_bernucci_2021, title={Asphalt Binder Linear Amplitude Sweep Test: Contribution Related to the alpha-Value Estimation}, volume={33}, ISSN={["1943-5533"]}, url={https://doi.org/10.1061/(ASCE)MT.1943-5533.0003569}, DOI={10.1061/(ASCE)MT.1943-5533.0003569}, abstractNote={AbstractThis paper calls attention to important issues that have not been considered regarding linear amplitude sweep (LAS) test in previous publications: Is the relationship between the storage mo...}, number={2}, journal={JOURNAL OF MATERIALS IN CIVIL ENGINEERING}, publisher={American Society of Civil Engineers (ASCE)}, author={Costa Meneses, Joao Paulo and Vasconcelos, Kamilla and Ho, Linda Lee and Kuchiishi, Andre Kazuo and Bernucci, Liedi L. B.}, year={2021}, month={Feb} }
 @article{mota_kuchiishi_takahashi_souza_camargo_bessa_vasconcelos_bernucci_2021, title={Effect of Binder Rheology and Aggregate Gradation on the Permanent Deformation of Asphalt Mixtures}, volume={19}, ISSN={["2383-3874"]}, url={https://doi.org/10.1007/s40999-021-00614-y}, DOI={10.1007/s40999-021-00614-y}, number={7}, journal={INTERNATIONAL JOURNAL OF CIVIL ENGINEERING}, publisher={Springer Science and Business Media LLC}, author={Mota, Rafael V. and Kuchiishi, Andre K. and Takahashi, Marcia M. and Souza, Gabriel and Camargo, Felipe F. and Bessa, Iuri S. and Vasconcelos, Kamilla L. and Bernucci, Liedi L. B.}, year={2021}, month={Jul}, pages={777–787} }
 @article{kuchiishi_vasconcelos_bernucci_2021, title={Effect of mixture composition on the mechanical behaviour of cold recycled asphalt mixtures}, volume={8}, url={https://doi.org/10.1080/10298436.2019.1655564}, DOI={10.1080/10298436.2019.1655564}, abstractNote={ABSTRACT Cold recycled asphalt mixtures (CRAMs) are generally comprised by reclaimed asphalt pavement, virgin aggregates, bitumen stabilising agents (asphalt emulsion or foamed asphalt) and active filler (Portland cement or hydrated lime). Depending on the type and content of each mixture constituent, the CRAM may exhibit different mechanical behaviours. The aim of this study is to evaluate the influence of mixture composition on the mechanical behaviour of CRAMs. The materials used were collected during the construction of an experimental test section and were used as base course mixtures. From triaxial resilient modulus test and dynamic modulus test, it was found that the type and content of bitumen stabilising agent and active filler substantially influence the behaviour of the CRAM. From triaxial resilient modulus tests, it was observed that the mixtures with cement addition behaved similarly to cementitious materials (independent of the confining pressure), while the ones with hydrated lime resembled a granular material (dependent of the stress-state). The dynamic modulus test results indicated that the CRAMs also exhibit viscoelastic properties. Besides, the test provided a clear difference between mixtures stabilised with either asphalt emulsion or foamed asphalt.}, journal={International Journal of Pavement Engineering}, publisher={Informa UK Limited}, author={Kuchiishi, André Kazuo and Vasconcelos, Kamilla and Bernucci, Liedi Legi Bariani}, year={2021}, month={Jul}, pages={1–11} }
 @article{kuchiishi_vasconcelos_santos antao_souza_andrade_dave_bariani bernucci_2021, title={Impact of Nonlinear Elastic Behavior of Foamed Asphalt Stabilized Mixes on Pavement Structural Performance}, volume={33}, ISSN={["1943-5533"]}, url={https://doi.org/10.1061/(ASCE)MT.1943-5533.0003919}, DOI={10.1061/(ASCE)MT.1943-5533.0003919}, abstractNote={AbstractThe mechanical behavior of cold recycled asphalt mixtures (CRAM) is influenced by its composition and limited studies have focused on exploration of nonlinear elastic behavior of CRAM. This...}, number={10}, journal={JOURNAL OF MATERIALS IN CIVIL ENGINEERING}, author={Kuchiishi, Andre Kazuo and Vasconcelos, Kamilla and Santos Antao, Camila Christine and Souza, Gabriel and Andrade, Lucas Rodrigues and Dave, Eshan and Bariani Bernucci, Liedi Legi}, year={2021}, month={Oct} }
 @article{effect of temperature on the fatigue behavior of asphalt binder_2019, url={http://dx.doi.org/10.1515/arh-2019-0004}, DOI={10.1515/arh-2019-0004}, abstractNote={Abstract}, journal={Applied Rheology}, year={2019}, month={Jan} }
 @article{kuchiishi_santos antão_vasconcelos_bernucci_2019, title={Influence of viscoelastic properties of cold recycled asphalt mixtures on pavement response by means of temperature instrumentation}, volume={20}, url={https://doi.org/10.1080/14680629.2019.1633781}, DOI={10.1080/14680629.2019.1633781}, abstractNote={Cold recycled asphalt mixtures (CRAMs) have been widely used in pavement construction and rehabilitation of base courses. Some studies describe it as granular materials, without stiffness dependency regarding temperature or frequency variation, while other researches state that it resembles a viscoelastic material. This indicates that the CRAMs mechanical behaviour is not fully understood. In the present study, dynamic modulus tests were conducted with CRAMs samples and the master curves suggested a viscoelastic behaviour for this type of mixture. The dynamic modulus results were used as input data in 3D-Move Analysis software and the pavement structure was simulated at different temperature conditions based on temperature instrumentation data collected from the field. It was found that the temperature dependency of CRAMs’ stiffness influences pavement mechanical behaviour. Besides, the relative stiffness between CRAMs and AC layers plays a major role in pavement response for varying temperatures. Therefore, CRAM's viscoelastic properties cannot be neglected.}, number={sup2}, journal={Road Materials and Pavement Design}, publisher={Informa UK Limited}, author={Kuchiishi, André Kazuo and Santos Antão, Camila Christine and Vasconcelos, Kamilla and Bernucci, Liedi Legi Bariani}, year={2019}, month={Jul}, pages={S710–S724} }
 @article{kuchiishi_santos antão_vasconcelos_pires_oliveira araújo_bernucci_lopes_2019, title={Investigation of the matric suction role on the curing mechanism of foamed asphalt stabilised mixtures}, volume={3}, url={https://doi.org/10.1080/14680629.2019.1589558}, DOI={10.1080/14680629.2019.1589558}, abstractNote={Moisture content is of great importance for foamed asphalt stabilised mixtures, since it influences mixing, compaction, curing process and the structural performance. The curing process, in which water evaporates, is responsible for the increase of the bearing capacity of foamed mixtures. Although different loading resistance mechanisms contribute simultaneously to the layer stiffness, the aim of this research is to evaluate the influence of matric suction in the stiffness of two foamed asphalt mixtures that have been used as base course materials in experimental test sections. Filter paper, X-ray microcomputed tomography and triaxial resilient modulus tests were conducted at four moisture conditions. The filter paper test indicated an increase in the matric suction when water evaporated from the specimen, which was validated by the reduction of the air voids measured with microcomputed tomography. From triaxial resilient modulus and matric suction results, it was observed that although other mechanisms might be dominating the loading resistance of foamed mixtures, the matric suction influences the stiffness of these materials.}, journal={Road Materials and Pavement Design}, publisher={Informa UK Limited}, author={Kuchiishi, André Kazuo and Santos Antão, Camila Christine and Vasconcelos, Kamilla and Pires, José and Oliveira Araújo, Olga Maria and Bernucci, Liedi Legi Bariani and Lopes, Ricardo Tadeu}, year={2019}, month={Apr}, pages={1–25} }
 @article{vieira_ferreira_kuchiishi_bernucci_sinatora_2015, title={Evaluation of friction mechanisms and wear rates on rubber tire materials by low-cost laboratory tests}, volume={328-329}, url={http://dx.doi.org/10.1016/j.wear.2015.04.001}, DOI={10.1016/j.wear.2015.04.001}, abstractNote={The tire–pavement contact is part of a complex tribo-system with several variables. Once the pavement surface and the rubber tire are directly and indirectly related to transportation safety, fuel consumption, wear rate, noise generation, and others, it is possible to state that a better understanding of tribo-logical variables may provide a deeper knowledge of friction and wear phenomena. In this study, low-cost tests were carried out for the purpose of evaluating these phenomena. In addition, statistical analysis of friction and wear rates was accomplished, allowing their correlation with parameters such as surface energy and wear pattern spacing. Therefore, it was possible to validate the existence and relevance of the adhesion mechanism at friction, which is frequently neglected in the literature. It was also possible to verify the indirect methods of evaluating wear and friction performance of rubber tire materials.}, journal={Wear}, publisher={Elsevier BV}, author={Vieira, T. and Ferreira, R.P. and Kuchiishi, A.K. and Bernucci, L.L.B. and Sinatora, A.}, year={2015}, month={Apr}, pages={556–562} }