The Experts below are selected from a list of 53559 Experts worldwide ranked by ideXlab platform
Rui Alexandre Lopes Baltazar Micaelo - One of the best experts on this subject based on the ideXlab platform.
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Experimental study of the effect of filler on the ductility of filler-bitumen mastics
Construction and Building Materials, 2018Co-Authors: Luís Pereira, M. Sá Da Costa, V. Antunes, L. Quaresma, A. C. Freire, Rui Alexandre Lopes Baltazar MicaeloAbstract:Abstract This research investigated the effect of filler on the ductility of filler-bitumen mastics, as a surrogate of the cohesive behaviour and the tensile properties. Various Fillers (industrial products, mineral Fillers or waste materials) were mixed with one paving grade bitumen, in various filler-to-bitumen ratios, and tested under the force-ductility test. The force-elongation curve obtained is affected by the constituents, but the peak force and total deformation energy are a mainly a function of the normalized filler concentration value. Moreover, the effect of the filler type and concentration on the specimen’s ductility is better perceived from the normalized post-peak deformation energy. Normalized filler concentration values close to 0.80 induce a clear reduction in ductility.
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effect of the chemical composition of Fillers in the filler bitumen interaction
Construction and Building Materials, 2016Co-Authors: Vitor Antunes, L. Quaresma, A. C. Freire, Rui Alexandre Lopes Baltazar MicaeloAbstract:Abstract In this study, the contribution of the chemical composition of the filler to the consistency and stripping resistance of filler–bitumen mixtures is analysed. The chemical composition and particle geometry of six Fillers of different origins are related with the consistency of filler–bitumen mixtures, using four different binders. The Fillers tested showed an excellent performance in the water susceptibility test, despite references of weak moisture resistance being made to asphalt with aggregates of the same petrology. The maximum filler content that may be mixed with the bitumen is a function of the filler’s geometrical characteristics and not directly of their chemical composition. The consistency level defined in some paving materials specifications by way of the softening point increase can be bitumen-normalized with the bitumen temperature susceptibility, which may help to select the filler content in asphalt after the definition of new threshold values.
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influence of the geometrical and physical properties of filler in the filler bitumen interaction
Construction and Building Materials, 2015Co-Authors: Vitor Antunes, L. Quaresma, A. C. Freire, Rui Alexandre Lopes Baltazar MicaeloAbstract:Abstract The objective of this laboratory study is to investigate the relationship between the geometrical and physical properties of filler and the consistency of filler–bitumen mixtures and the stripping resistance. Five Fillers (3 manufactured and 2 natural) were geometrically and physically characterized with various test methods, including SEM imaging. The filler–bitumen interaction was assessed with two consistency-related mastic tests and a water susceptibility test. SEM images show significant differences in size, shape and surface texture between tested Fillers, and a strong correlation with the stiffening effect. It is proposed the inclusion of the f/bmax ratio, obtained from the absorbing capacity test, in the filler specifications to serve as an indicative threshold value of the filler content added.
Sang Jin Chun - One of the best experts on this subject based on the ideXlab platform.
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physical and mechanical properties of wood plastic composites hybridized with inorganic Fillers
Journal of Composite Materials, 2012Co-Authors: Jae Gyoung Gwon, Sang Jin ChunAbstract:Hybrid filler-reinforced composites are considered as high performance materials, but limited number of studies on hybridizations of wood fibers and mineral Fillers were reported. Three types of inorganic Fillers (talc, kaolin, and zinc-borate), which have been widely adopted in various applications, were used for manufacturing wood–plastic composites (WPCs). The aim of this study is to understand the effects of filler shape, size, surface nature, and loading amount on the physical properties of WPCs. Kaolin filler showed the best performance in mechanical strength because of its staked plate shape, small particle size, and highly hydrophilic characteristics of its surface. In water absorption, talc filler showed a lower value than the kaolin case due to the structural difference.
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effects of chemical treatments of hybrid Fillers on the physical and thermal properties of wood plastic composites
Composites Part A-applied Science and Manufacturing, 2010Co-Authors: Jae Gyoung Gwon, Sang Jin ChunAbstract:Hybrid filler reinforced composites are considered as a high performance materials, but limited numbers of researches on hybridizations of wood fibers and mineral Fillers were reported. Generally, high amount of filler content in composites can lead to the reduction of interfacial adhesion between matrix polymer and Fillers, and it limits their applications. In this study, we measured the changes of tensile strength, water absorption, and thermal properties of composites after chemical treatments to wood fibers and mineral Fillers. Coupling agent had its own optimum amount for wood fibers and talc to obtain the highest tensile strength. Talc addition showed little effect of the tensile strength with alkali treated wood fibers. Talc addition and silane treatment showed opposite effects on water absorption. Melting enthalpy was decreased by addition of the Fillers because of the reduced amount of the crystallizable resin and because of the interference of the Fillers for crystallization process.
A. C. Freire - One of the best experts on this subject based on the ideXlab platform.
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Experimental study of the effect of filler on the ductility of filler-bitumen mastics
Construction and Building Materials, 2018Co-Authors: Luís Pereira, M. Sá Da Costa, V. Antunes, L. Quaresma, A. C. Freire, Rui Alexandre Lopes Baltazar MicaeloAbstract:Abstract This research investigated the effect of filler on the ductility of filler-bitumen mastics, as a surrogate of the cohesive behaviour and the tensile properties. Various Fillers (industrial products, mineral Fillers or waste materials) were mixed with one paving grade bitumen, in various filler-to-bitumen ratios, and tested under the force-ductility test. The force-elongation curve obtained is affected by the constituents, but the peak force and total deformation energy are a mainly a function of the normalized filler concentration value. Moreover, the effect of the filler type and concentration on the specimen’s ductility is better perceived from the normalized post-peak deformation energy. Normalized filler concentration values close to 0.80 induce a clear reduction in ductility.
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effect of the chemical composition of Fillers in the filler bitumen interaction
Construction and Building Materials, 2016Co-Authors: Vitor Antunes, L. Quaresma, A. C. Freire, Rui Alexandre Lopes Baltazar MicaeloAbstract:Abstract In this study, the contribution of the chemical composition of the filler to the consistency and stripping resistance of filler–bitumen mixtures is analysed. The chemical composition and particle geometry of six Fillers of different origins are related with the consistency of filler–bitumen mixtures, using four different binders. The Fillers tested showed an excellent performance in the water susceptibility test, despite references of weak moisture resistance being made to asphalt with aggregates of the same petrology. The maximum filler content that may be mixed with the bitumen is a function of the filler’s geometrical characteristics and not directly of their chemical composition. The consistency level defined in some paving materials specifications by way of the softening point increase can be bitumen-normalized with the bitumen temperature susceptibility, which may help to select the filler content in asphalt after the definition of new threshold values.
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influence of the geometrical and physical properties of filler in the filler bitumen interaction
Construction and Building Materials, 2015Co-Authors: Vitor Antunes, L. Quaresma, A. C. Freire, Rui Alexandre Lopes Baltazar MicaeloAbstract:Abstract The objective of this laboratory study is to investigate the relationship between the geometrical and physical properties of filler and the consistency of filler–bitumen mixtures and the stripping resistance. Five Fillers (3 manufactured and 2 natural) were geometrically and physically characterized with various test methods, including SEM imaging. The filler–bitumen interaction was assessed with two consistency-related mastic tests and a water susceptibility test. SEM images show significant differences in size, shape and surface texture between tested Fillers, and a strong correlation with the stiffening effect. It is proposed the inclusion of the f/bmax ratio, obtained from the absorbing capacity test, in the filler specifications to serve as an indicative threshold value of the filler content added.
L. Quaresma - One of the best experts on this subject based on the ideXlab platform.
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Experimental study of the effect of filler on the ductility of filler-bitumen mastics
Construction and Building Materials, 2018Co-Authors: Luís Pereira, M. Sá Da Costa, V. Antunes, L. Quaresma, A. C. Freire, Rui Alexandre Lopes Baltazar MicaeloAbstract:Abstract This research investigated the effect of filler on the ductility of filler-bitumen mastics, as a surrogate of the cohesive behaviour and the tensile properties. Various Fillers (industrial products, mineral Fillers or waste materials) were mixed with one paving grade bitumen, in various filler-to-bitumen ratios, and tested under the force-ductility test. The force-elongation curve obtained is affected by the constituents, but the peak force and total deformation energy are a mainly a function of the normalized filler concentration value. Moreover, the effect of the filler type and concentration on the specimen’s ductility is better perceived from the normalized post-peak deformation energy. Normalized filler concentration values close to 0.80 induce a clear reduction in ductility.
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effect of the chemical composition of Fillers in the filler bitumen interaction
Construction and Building Materials, 2016Co-Authors: Vitor Antunes, L. Quaresma, A. C. Freire, Rui Alexandre Lopes Baltazar MicaeloAbstract:Abstract In this study, the contribution of the chemical composition of the filler to the consistency and stripping resistance of filler–bitumen mixtures is analysed. The chemical composition and particle geometry of six Fillers of different origins are related with the consistency of filler–bitumen mixtures, using four different binders. The Fillers tested showed an excellent performance in the water susceptibility test, despite references of weak moisture resistance being made to asphalt with aggregates of the same petrology. The maximum filler content that may be mixed with the bitumen is a function of the filler’s geometrical characteristics and not directly of their chemical composition. The consistency level defined in some paving materials specifications by way of the softening point increase can be bitumen-normalized with the bitumen temperature susceptibility, which may help to select the filler content in asphalt after the definition of new threshold values.
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influence of the geometrical and physical properties of filler in the filler bitumen interaction
Construction and Building Materials, 2015Co-Authors: Vitor Antunes, L. Quaresma, A. C. Freire, Rui Alexandre Lopes Baltazar MicaeloAbstract:Abstract The objective of this laboratory study is to investigate the relationship between the geometrical and physical properties of filler and the consistency of filler–bitumen mixtures and the stripping resistance. Five Fillers (3 manufactured and 2 natural) were geometrically and physically characterized with various test methods, including SEM imaging. The filler–bitumen interaction was assessed with two consistency-related mastic tests and a water susceptibility test. SEM images show significant differences in size, shape and surface texture between tested Fillers, and a strong correlation with the stiffening effect. It is proposed the inclusion of the f/bmax ratio, obtained from the absorbing capacity test, in the filler specifications to serve as an indicative threshold value of the filler content added.
Vitor Antunes - One of the best experts on this subject based on the ideXlab platform.
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effect of the chemical composition of Fillers in the filler bitumen interaction
Construction and Building Materials, 2016Co-Authors: Vitor Antunes, L. Quaresma, A. C. Freire, Rui Alexandre Lopes Baltazar MicaeloAbstract:Abstract In this study, the contribution of the chemical composition of the filler to the consistency and stripping resistance of filler–bitumen mixtures is analysed. The chemical composition and particle geometry of six Fillers of different origins are related with the consistency of filler–bitumen mixtures, using four different binders. The Fillers tested showed an excellent performance in the water susceptibility test, despite references of weak moisture resistance being made to asphalt with aggregates of the same petrology. The maximum filler content that may be mixed with the bitumen is a function of the filler’s geometrical characteristics and not directly of their chemical composition. The consistency level defined in some paving materials specifications by way of the softening point increase can be bitumen-normalized with the bitumen temperature susceptibility, which may help to select the filler content in asphalt after the definition of new threshold values.
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influence of the geometrical and physical properties of filler in the filler bitumen interaction
Construction and Building Materials, 2015Co-Authors: Vitor Antunes, L. Quaresma, A. C. Freire, Rui Alexandre Lopes Baltazar MicaeloAbstract:Abstract The objective of this laboratory study is to investigate the relationship between the geometrical and physical properties of filler and the consistency of filler–bitumen mixtures and the stripping resistance. Five Fillers (3 manufactured and 2 natural) were geometrically and physically characterized with various test methods, including SEM imaging. The filler–bitumen interaction was assessed with two consistency-related mastic tests and a water susceptibility test. SEM images show significant differences in size, shape and surface texture between tested Fillers, and a strong correlation with the stiffening effect. It is proposed the inclusion of the f/bmax ratio, obtained from the absorbing capacity test, in the filler specifications to serve as an indicative threshold value of the filler content added.