Mechanical Response of Modified Asphalt Pavements

2011 ◽  
Author(s):  
S. Anjan kumar ◽  
P. Alagappan ◽  
J. Murali Krishnan ◽  
A. Veeraragavan
Keyword(s):  
Mechanical Response ◽  
Asphalt Pavements ◽  
Modified Asphalt

Evaluation of Reclaimed Polyethylene-Modified Asphalt Pavements

2010 ◽  
Vol 38 (5) ◽  
pp. 102418 ◽  
Author(s):  
M. R. Mitchell ◽  
R. E. Link ◽  
V. S. Punith ◽  
A. Veeraragavan
Keyword(s):  
Asphalt Pavements ◽  
Modified Asphalt

A Review of Advance Nanotechnology against Pavement Deterioration

2015 ◽  
Vol 1113 ◽  
pp. 9-12 ◽  
Author(s):  
C.M. Nurulain ◽  
P.J. Ramadhansyah ◽  
A.H. Norhidayah
Keyword(s):  
New Technology ◽  
Permanent Deformation ◽  
Asphalt Binder ◽  
Construction Materials ◽  
Fatigue Cracking ◽  
Asphalt Pavements ◽  
X Ray Diffraction ◽  
Modified Asphalt ◽  
Modified Asphalt Binder ◽  
Polymer Modified Asphalt

This paper presents a review of nanoclay as a latest technology in order to overcome problem due deterioration such as rutting, fatigue, stripping, cracking and so on. Nowadays, with increasing of traffic volume and heavy vehicle conditions of existing road totally fail in order to accommodate this situation during design period. In order to manage this problem the new technology had been create and apply. Previous researches prove that nanotechnology has potential solution to enhance the performance and durability of construction materials. Material properties were characterized using Fourier-transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM) and X-ray diffraction (XRD). According to previous research there were proved that addition of nanoclay lead great improvements on permanent deformation and fatigue life of hot mix asphalt (HMA). In addition the overall performance of nanoclay as polymer modified asphalt binder was improve in terms of rutting and fatigue cracking resistance compare to non-modified asphalt binder. Therefore, nanoclay itself would be an alternative as modifier to use in the bitumen to improve the lifetime of asphalt pavements.

scholarly journals Master Curve Establishment and Complex Modulus Evaluation of SBS-Modified Asphalt Mixture Reinforced with Basalt Fiber Based on Generalized Sigmoidal Model

Polymers ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 1586 ◽  
Author(s):  
Guojin Tan ◽  
Wensheng Wang ◽  
Yongchun Cheng ◽  
Yong Wang ◽  
Zhiqing Zhu
Keyword(s):  
Master Curve ◽  
Mechanical Response ◽  
Complex Modulus ◽  
Superposition Principle ◽  
Asphalt Mixture ◽  
Basalt Fiber ◽  
Loading Frequency ◽  
Modified Asphalt ◽  
Dynamic Mechanical ◽  
Sigmoidal Model

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.

Effect of Aging on the Low-Temperature Properties of Asphalt Mixture

2013 ◽  
Vol 438-439 ◽  
pp. 383-386
Author(s):  
Ning Li Li ◽  
Xin Po Zhao ◽  
Cai Li Zhang ◽  
Qing Yi Xiao ◽  
Hu Hui Li
Keyword(s):  
Low Temperature ◽  
Asphalt Mixture ◽  
Asphalt Mixtures ◽  
Asphalt Pavements ◽  
Flexural Test ◽  
Short Term ◽  
Modified Asphalt ◽  
Aging Test ◽  
Cracking Performance

This article studies the low-temperature anti-cracking properties of plain asphalt mixtures and rubber-modified asphalt mixtures at different aging condition. Laboratory flexural test was conducted on the beam specimens of plain asphalt mixtures and rubber-modified asphalt mixtures. Experiment results indicate that rubber-modified asphalt mixtures have superior low-temperature anti-cracking performance than that of plain asphalt mixtures. Compared with the short term oven aging test, the long term oven aging test has more significant effect on the low-temperature anti-cracking of the mixture. In order to better represent the low-temperature anti-cracking of in-service aging asphalt pavement, the long term oven aging test should be used to appraise the low-temperature anti-cracking of asphalt pavements in china.

scholarly journals Mechanical Response and Structure Optimization of Nanomodified Asphalt Pavement

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Wenjun Gu ◽  
Yao Tian ◽  
Xuanyu Zhang
Keyword(s):  
Mechanical Response ◽  
Mechanical Performance ◽  
Asphalt Pavement ◽  
Structural Models ◽  
Structure Optimization ◽  
Design Parameters ◽  
Modified Asphalt ◽  
Unique Material ◽  
Pavement Structure ◽  
Pavement Thickness

Nanomaterials are widely used in the preparation of modified asphalt because they can improve the high-temperature performance of matrix asphalt and have achieved good engineering results. However, the existing research mainly focuses on the material analysis and formula development of nanomodified asphalt and has not yet been involved in the mechanical response of the nanomodified asphalt pavement structure. The mechanical response contains the horizontal tensile stress and the vertical compressive stress of SiO2 modified asphalt pavement. It is unable to propose the matching pavement structure combination for the unique material characteristics of nanomodified asphalt, which leads to the increase of the possibility of pavement diseases and material waste. Hence, considering that semirigid base is the most widely used base type in China, two different structural models of nanomodified asphalt pavement are established according to the current specifications. The effects of pavement thickness, material type, and pavement design parameters on the mechanical response of nanomodified asphalt pavement are analyzed, and then the principle of optimal mechanical performance is taken and the optimal combination of nanomodified asphalt pavement structure is proposed.

scholarly journals Investigation on Preparation and Properties of Crack Sealants Based on CNTs/SBS Composite-Modified Asphalt

Materials ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4569
Author(s):  
Yafeng Gong ◽  
Yunze Pang ◽  
Feng He ◽  
Haipeng Bi
Keyword(s):  
Fatigue Resistance ◽  
Elastic Recovery ◽  
Asphalt Pavements ◽  
Cone Penetration ◽  
Modified Asphalt ◽  
Repair Materials ◽  
Aging Resistance ◽  
Crack Repair ◽  
Crack Sealant ◽  
Styrene Butadiene

Crack is the main distress of asphalt pavement. Sealant is one of the most commonly used crack repair materials, and its performance is the key to affect the service life of asphalt pavements. In order to find an efficient modifier and optimize the performances of crack sealants. In this paper, carbon nanotubes (CNTs) and styrene-butadiene-styrene (SBS) were used as modifiers to prepare CNTs/SBS composite-modified asphalt crack sealant. The properties of the sealant were tested to evaluate its suitability for crack repair, which included the viscosity, softening point, resilience recovery, cone penetration, flow value, penetration, aging resistance, and fatigue resistance. The results showed that the conventional properties of the sealants meet the requirements of the specification. In addition, after heating aging, the elastic recovery rate of the sealant containing more CNTs decreased only slightly. The sealant containing 1 wt% CNTs exhibited a higher viscosity, fatigue resistance, thermal aging resistance.

Physical and anti-aging characteristics of nano-TiO2/irganox 1010 composite modified asphalt

2021 ◽  
Vol 11 (10) ◽  
pp. 1723-1731
Author(s):  
Zhongming He ◽  
Tangxin Xie ◽  
Chuansheng Chen ◽  
Fangfang Yang
Keyword(s):  
Asphalt Pavements ◽  
Creep Recovery ◽  
Scanning Electron Microscopy Data ◽  
Irganox 1010 ◽  
Complex Environments ◽  
Uv Aging ◽  
Modified Asphalt ◽  
Multiple Stress Creep Recovery ◽  
Aging Phenomenon ◽  
Microscopy Data

Asphalt aging is the main cause of fatigue failure from asphalt pavements, and it can be divided into thermaloxidative and ultraviolet (UV) aging. In this study, nano-TiO2/Irganox 1010 were added to neat asphalt to simultaneously improve the aging phenomenon of asphalt in a variety of complex conditions of asphalt. We then analyzed and discussed physical properties of nano-TiO2/Irganox 1010 modified asphalt composites. In addition, MSCR (Multiple Stress Creep Recovery) and DSR (Dynamic Shear Rheometer) rheological tests were performed on nano-TiO2/Irganox 1010 modified asphalt with different contents. Aging simulation of nano-TiO2/Irganox 1010 modified asphalt was conducted through the TFOT (The Thin Film Oven Test) and UV test, and microstructure of UV aging was analyzed through scanning electron microscopy. Data analysis showed that the nano-TiO2/Irganox 1010 increased softening point and reduced penetration (25 °C) and ductility (5 °C). The nano-TiO2/Irganox 1010 also improved the creep resistance and rheological properties of the composites. Finally, the analysis of test results under different conditions showed that the addition of nano-TiO2/Irganox 1010 significantly enhanced the ability of asphalt to deal with aging in a variety of complex environments.

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