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Zhiqing Zhu - One of the best experts on this subject based on the ideXlab platform.
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establishment of Complex Modulus master curves based on generalized sigmoidal model for freeze thaw resistance evaluation of basalt fiber modified asphalt mixtures
Polymers, 2020Co-Authors: Guojin Tan, Wensheng Wang, Yongchun Cheng, Yong Wang, Zhiqing ZhuAbstract:This study aims to study the freeze-thaw (F-T) resistance of asphalt mixture incorporating styrene-butadiene-styrene (SBS) polymer and basalt fiber by using the established Complex master curves of the generalized Sigmoidal model. Asphalt mixture samples incorporating styrene-butadiene-styrene (SBS) polymer and basalt fiber were manufactured following the Superpave gyratory compaction (SGC) method and coring as well as sawing. After 0-21 F-T cycles processing, a Complex Modulus test asphalt mixture specimen was performed to evaluate the influence of the F-T cycle. Besides, according to the time-temperature superposition principle, the master curves of a Complex Modulus were constructed to reflect the dynamic mechanical response in an extended range of reduced frequency at an arbitrary temperature. The results indicated that the elastic and viscous portions of asphalt mixture incorporating SBS and basalt fiber have decreased overall. It could be observed from the dynamic Modulus ratio that the dynamic Modulus ratios of specimens were more affected by the F-T cycle at low frequency or high temperature. Thus, in the process of asphalt pavement design and maintenance, attention should be paid to seasonal frozen asphalt pavement under low frequency and high temperature.
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master curve establishment and Complex Modulus evaluation of sbs modified asphalt mixture reinforced with basalt fiber based on generalized sigmoidal model
Polymers, 2020Co-Authors: Guojin Tan, Wensheng Wang, Yongchun Cheng, Yong Wang, Zhiqing ZhuAbstract:Basalt fiber has been proved to be a good modified material for asphalt mixture. The performance of basalt fiber modified asphalt mixture has been widely investigated by extensive researches. However, most studies focused on ordinary static load tests, and less attention was paid to the dynamic mechanical response of asphalt mixture incorporating with basalt fiber. This paper aims to establish the master curve of Complex Modulus of asphalt mixture incorporating of styrene-butadiene-styrene (SBS) polymer and basalt fiber using the generalized Sigmoidal model. Both loading frequency and temperature were investigated for dynamic mechanical response of asphalt mixture with basalt fiber. In addition, based on the time-temperature superposition principle, the master curves of Complex Modulus were constructed to reflect the dynamic mechanical response at an extended reduced frequency range at an arbitrary temperature. Results indicated that the generalized Sigmoidal model in this paper could better reflect the dynamic mechanical response accurately with correlation coefficients above 0.97, which is utilized to predict the dynamic mechanical performances accurately. Simultaneously, the Modulus values exhibit an increasing trend with loading frequency and decrease versus temperature. However, the phase angle values showed different trends with frequency and temperature.
Guojin Tan - One of the best experts on this subject based on the ideXlab platform.
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establishment of Complex Modulus master curves based on generalized sigmoidal model for freeze thaw resistance evaluation of basalt fiber modified asphalt mixtures
Polymers, 2020Co-Authors: Guojin Tan, Wensheng Wang, Yongchun Cheng, Yong Wang, Zhiqing ZhuAbstract:This study aims to study the freeze-thaw (F-T) resistance of asphalt mixture incorporating styrene-butadiene-styrene (SBS) polymer and basalt fiber by using the established Complex master curves of the generalized Sigmoidal model. Asphalt mixture samples incorporating styrene-butadiene-styrene (SBS) polymer and basalt fiber were manufactured following the Superpave gyratory compaction (SGC) method and coring as well as sawing. After 0-21 F-T cycles processing, a Complex Modulus test asphalt mixture specimen was performed to evaluate the influence of the F-T cycle. Besides, according to the time-temperature superposition principle, the master curves of a Complex Modulus were constructed to reflect the dynamic mechanical response in an extended range of reduced frequency at an arbitrary temperature. The results indicated that the elastic and viscous portions of asphalt mixture incorporating SBS and basalt fiber have decreased overall. It could be observed from the dynamic Modulus ratio that the dynamic Modulus ratios of specimens were more affected by the F-T cycle at low frequency or high temperature. Thus, in the process of asphalt pavement design and maintenance, attention should be paid to seasonal frozen asphalt pavement under low frequency and high temperature.
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master curve establishment and Complex Modulus evaluation of sbs modified asphalt mixture reinforced with basalt fiber based on generalized sigmoidal model
Polymers, 2020Co-Authors: Guojin Tan, Wensheng Wang, Yongchun Cheng, Yong Wang, Zhiqing ZhuAbstract:Basalt fiber has been proved to be a good modified material for asphalt mixture. The performance of basalt fiber modified asphalt mixture has been widely investigated by extensive researches. However, most studies focused on ordinary static load tests, and less attention was paid to the dynamic mechanical response of asphalt mixture incorporating with basalt fiber. This paper aims to establish the master curve of Complex Modulus of asphalt mixture incorporating of styrene-butadiene-styrene (SBS) polymer and basalt fiber using the generalized Sigmoidal model. Both loading frequency and temperature were investigated for dynamic mechanical response of asphalt mixture with basalt fiber. In addition, based on the time-temperature superposition principle, the master curves of Complex Modulus were constructed to reflect the dynamic mechanical response at an extended reduced frequency range at an arbitrary temperature. Results indicated that the generalized Sigmoidal model in this paper could better reflect the dynamic mechanical response accurately with correlation coefficients above 0.97, which is utilized to predict the dynamic mechanical performances accurately. Simultaneously, the Modulus values exhibit an increasing trend with loading frequency and decrease versus temperature. However, the phase angle values showed different trends with frequency and temperature.
Herve Di Benedetto - One of the best experts on this subject based on the ideXlab platform.
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3d Complex Modulus tests on bituminous mixture with sinusoidal loadings in tension and or compression
Materials and Structures, 2017Co-Authors: Quang Tuan Nguyen, Mai Lan Nguyen, Herve Di Benedetto, Cedric Sauzeat, Thi Thanh Nhan HoangAbstract:This paper presents an investigation into 3D viscoelastic behaviour of bituminous mixture. Complex Modulus tests were performed at ENTPE laboratory on cylindrical samples, for three different modes of sinusoidal loading: only tension, only compression and tension–compression. Stress-controlled mode was used for cyclic tension tests and cyclic compression tests whereas cyclic tension–compression tests were conducted in strain-controlled mode. For all loading conditions, the strain amplitude of sinusoidal cyclic loadings is less than 60 µm/m. Complex Modulus E * and Complex Poisson’s ratio ν * were measured at five temperatures ranging from 1 to 30 °C and at six frequencies ranging from 0.03 to 10 Hz. The results indicated that Complex moduli are the same for the three modes of loading for average and low temperatures. Rather small differences were obtained between Complex Modulus values obtained from the three types of loading for higher temperatures. These differences could be explained by nonlinearity (Modulus value depending on strain level) and accumulated strain existing for only tension and only compression type tests. No noticeable differences in Complex Poisson’s ratio could be obtained from the three modes of loading.
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viscoelastic behaviour characterization of a gap graded asphalt mixture with sbs polymer modified bitumen
Materials Research-ibero-american Journal of Materials, 2015Co-Authors: Diego Ramirez Cardona, Herve Di Benedetto, Simon Pouget, Francois OlardAbstract:A characterization of the linear thermo-viscoelastic behaviour of a gap-graded bituminous mixture with SBS-polymer modified bitumen and RAP aggregates is presented in this paper. A comparison was made, in terms of their viscoelastic behaviour, between this innovative mixture and two commonly used well-graded base-course French mixtures made with pure bitumen. The materials were also compared in terms of viscous dissipated energy. Complex Modulus tests on cylindrical samples were performed for each mixture. The viscoelastic behaviour of the materials was modelled using the 2S2P1D (2 springs, 2 parabolic elements, 1 dashpot) constitutive model which was developed in the Laboratory of Civil Engineering and Construction (LGCB) of the ENTPE, University of Lyon. The tests results allowed validating the time-temperature superposition principle for the studied mixtures. Experimental and modelled Complex Modulus (|E*|) master curves were built for each material. The gap-graded mixture was found to present higher stiffness values at low frequency/high temperature conditions, lower viscous behaviour and lower values of viscous dissipated energy compared to the conventional mixtures. Complex Modulus tests were also carried out on the polymer modified bitumen of the gap-graded mixture. A link between the viscoelastic behaviour of both binder and mixture could be established thanks to the SHStS transformation developed by the ENTPE team.
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Validation of the time-temperature superposition principle for crack propagation in bituminous mixtures
Materials and Structures, 2013Co-Authors: Mai Lan Nguyen, Herve Di Benedetto, Cedric Sauzeat, Nouffou TapsobaAbstract:The time-temperature superposition principle (TTSP) is known to be valid in the small strain domain where the behaviour of bituminous mixtures is linear viscoelastic (LVE). The behaviour is then called thermorheologically simple. In this work, an experimental campaign was performed at University of Lyon/ENTPE (France) to check the validity of the TTSP in the linear domain in the tridimensional case and also when cracks occur and propagate in bituminous mixture. A four-point bending test, which has been designed at University of Lyon/ENTPE, was used as crack propagation test. First, a Complex Modulus test is performed on cylindrical specimen in the LVE domain. Then, a series of crack propagation tests are carried out at different temperatures and different imposed displacement rates. The same shift factors obtained for master curve of Complex Modulus is also applied for the crack propagation tests analysis. The results allow obtaining a unique curve, for identical loadings when plotting as a function of reduced time. This result confirms that the TTSP is also valid for crack propagation in bituminous mixtures.
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from the behavior of constituent materials to the calculation and design of orthotropic bridge structures
Road Materials and Pavement Design, 2010Co-Authors: Simon Pouget, Herve Di Benedetto, Cedric Sauzeat, Francois OlardAbstract:A new approach is proposed to determine the global response of an orthotropic bridge structure from the behavior of the constituent materials that are binders, aggregates and steel. Experimental results and modeling using constitutive models (2S2P1D and DBN) developed by ENTPE team are presented for the bituminous materials in the linear domain. From these results, a transformation that is independent of the introduced models allows the bituminous mix Complex Modulus to be predicted from the bitumen Complex Modulus. Then, the response of a 3D orthotropic steel deck bridge subjected to moving wheel loads is presented using numerical Finite Element Method (FEM). The influence of temperature and viscous behavior of surfacing layers on the structure response such as deflection and longitudinal stress are emphasized.
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effect of ultrafine particles on linear viscoelastic properties of mastics and asphalt concretes
Transportation Research Record, 2008Co-Authors: Brice Delaporte, Herve Di Benedetto, P Chaverot, Gilles GauthierAbstract:A new type of filler, composed of only ultrafine particles (silica fumes), has been used to design mastics and asphalt concretes. An experimental campaign on mastics and mixtures, performed at the ENTPE/DGCB laboratory, compares the effect of the ultrafine particles to that of "classical" fillers. The linear viscoelastic properties (shear Complex Modulus G*) of mastics have been measured with a specifically developed device (annular shear rheometer) presented in this paper. The potential for reinforcement of fillers is quantified by the Complex reinforcement coefficient R*M introduced in this paper. The results show that the use of the ultrafine particles greatly increases the Complex Modulus of mastics at high temperature, in comparison to mastics made with classical fillers. In the low-temperature region, the Complex Modulus is little affected by the filler characteristics. The effect of ultrafine particles has also been analyzed for asphalt concretes, which have been tested using a tension compression ...
Yong Wang - One of the best experts on this subject based on the ideXlab platform.
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establishment of Complex Modulus master curves based on generalized sigmoidal model for freeze thaw resistance evaluation of basalt fiber modified asphalt mixtures
Polymers, 2020Co-Authors: Guojin Tan, Wensheng Wang, Yongchun Cheng, Yong Wang, Zhiqing ZhuAbstract:This study aims to study the freeze-thaw (F-T) resistance of asphalt mixture incorporating styrene-butadiene-styrene (SBS) polymer and basalt fiber by using the established Complex master curves of the generalized Sigmoidal model. Asphalt mixture samples incorporating styrene-butadiene-styrene (SBS) polymer and basalt fiber were manufactured following the Superpave gyratory compaction (SGC) method and coring as well as sawing. After 0-21 F-T cycles processing, a Complex Modulus test asphalt mixture specimen was performed to evaluate the influence of the F-T cycle. Besides, according to the time-temperature superposition principle, the master curves of a Complex Modulus were constructed to reflect the dynamic mechanical response in an extended range of reduced frequency at an arbitrary temperature. The results indicated that the elastic and viscous portions of asphalt mixture incorporating SBS and basalt fiber have decreased overall. It could be observed from the dynamic Modulus ratio that the dynamic Modulus ratios of specimens were more affected by the F-T cycle at low frequency or high temperature. Thus, in the process of asphalt pavement design and maintenance, attention should be paid to seasonal frozen asphalt pavement under low frequency and high temperature.
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master curve establishment and Complex Modulus evaluation of sbs modified asphalt mixture reinforced with basalt fiber based on generalized sigmoidal model
Polymers, 2020Co-Authors: Guojin Tan, Wensheng Wang, Yongchun Cheng, Yong Wang, Zhiqing ZhuAbstract:Basalt fiber has been proved to be a good modified material for asphalt mixture. The performance of basalt fiber modified asphalt mixture has been widely investigated by extensive researches. However, most studies focused on ordinary static load tests, and less attention was paid to the dynamic mechanical response of asphalt mixture incorporating with basalt fiber. This paper aims to establish the master curve of Complex Modulus of asphalt mixture incorporating of styrene-butadiene-styrene (SBS) polymer and basalt fiber using the generalized Sigmoidal model. Both loading frequency and temperature were investigated for dynamic mechanical response of asphalt mixture with basalt fiber. In addition, based on the time-temperature superposition principle, the master curves of Complex Modulus were constructed to reflect the dynamic mechanical response at an extended reduced frequency range at an arbitrary temperature. Results indicated that the generalized Sigmoidal model in this paper could better reflect the dynamic mechanical response accurately with correlation coefficients above 0.97, which is utilized to predict the dynamic mechanical performances accurately. Simultaneously, the Modulus values exhibit an increasing trend with loading frequency and decrease versus temperature. However, the phase angle values showed different trends with frequency and temperature.
Yongchun Cheng - One of the best experts on this subject based on the ideXlab platform.
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establishment of Complex Modulus master curves based on generalized sigmoidal model for freeze thaw resistance evaluation of basalt fiber modified asphalt mixtures
Polymers, 2020Co-Authors: Guojin Tan, Wensheng Wang, Yongchun Cheng, Yong Wang, Zhiqing ZhuAbstract:This study aims to study the freeze-thaw (F-T) resistance of asphalt mixture incorporating styrene-butadiene-styrene (SBS) polymer and basalt fiber by using the established Complex master curves of the generalized Sigmoidal model. Asphalt mixture samples incorporating styrene-butadiene-styrene (SBS) polymer and basalt fiber were manufactured following the Superpave gyratory compaction (SGC) method and coring as well as sawing. After 0-21 F-T cycles processing, a Complex Modulus test asphalt mixture specimen was performed to evaluate the influence of the F-T cycle. Besides, according to the time-temperature superposition principle, the master curves of a Complex Modulus were constructed to reflect the dynamic mechanical response in an extended range of reduced frequency at an arbitrary temperature. The results indicated that the elastic and viscous portions of asphalt mixture incorporating SBS and basalt fiber have decreased overall. It could be observed from the dynamic Modulus ratio that the dynamic Modulus ratios of specimens were more affected by the F-T cycle at low frequency or high temperature. Thus, in the process of asphalt pavement design and maintenance, attention should be paid to seasonal frozen asphalt pavement under low frequency and high temperature.
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master curve establishment and Complex Modulus evaluation of sbs modified asphalt mixture reinforced with basalt fiber based on generalized sigmoidal model
Polymers, 2020Co-Authors: Guojin Tan, Wensheng Wang, Yongchun Cheng, Yong Wang, Zhiqing ZhuAbstract:Basalt fiber has been proved to be a good modified material for asphalt mixture. The performance of basalt fiber modified asphalt mixture has been widely investigated by extensive researches. However, most studies focused on ordinary static load tests, and less attention was paid to the dynamic mechanical response of asphalt mixture incorporating with basalt fiber. This paper aims to establish the master curve of Complex Modulus of asphalt mixture incorporating of styrene-butadiene-styrene (SBS) polymer and basalt fiber using the generalized Sigmoidal model. Both loading frequency and temperature were investigated for dynamic mechanical response of asphalt mixture with basalt fiber. In addition, based on the time-temperature superposition principle, the master curves of Complex Modulus were constructed to reflect the dynamic mechanical response at an extended reduced frequency range at an arbitrary temperature. Results indicated that the generalized Sigmoidal model in this paper could better reflect the dynamic mechanical response accurately with correlation coefficients above 0.97, which is utilized to predict the dynamic mechanical performances accurately. Simultaneously, the Modulus values exhibit an increasing trend with loading frequency and decrease versus temperature. However, the phase angle values showed different trends with frequency and temperature.