Laboratory and Field Research on Using Cement and Polyester Fiber to Enhance the Performance of Emulsified Asphalt Cold Recycled Mixture

Jiang, Yingjun; Yi, Yong; Tian, Tian; Fan, Jiangtao; Bai, Chenfan; Ya, Tan; Fang, J.; Deng, Changqing

doi:10.1007/s13369-022-07260-z

Cited by 4 publications

(2 citation statements)

References 32 publications

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“…As a renewable resource, Re-PET plays a vital role in fostering the sustainable development of the chemical fiber industry. It not only significantly reduces energy consumption but also offers economic advantages [23][24][25][26]. However, in comparison to PET derived from petroleum cracking, Re-PET exhibits a lower molecular weight, increased impurities, and inadequate thermal resistance.…”

Section: Introductionmentioning

confidence: 99%

Surface Modification of Recycled Polyester Fiber and Performance Evaluation of Its Asphalt Mastic and Mixture

Xia,

Cao,

Zhang

et al. 2023

Sustainability

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The use of recycled polyester fiber (Re-PET) partially addresses the scarcity of non-renewable polyester (PET), but its thermal resistance in asphalt mixtures is relatively low. To enhance the reutilization and thermal resistance of Re-PET, it was modified through in situ growth grafting with tetrahedral nanoSiO2. A novel nanoSiO2 hybrid material (SiO2/Re-PET) was successfully prepared, and the effects of the surface modification on the morphology and thermal resistance of the Re-PET were investigated with the examination of its mechanism of modification. The results demonstrated an increase in the surface roughness and specific surface area of SiO2/Re-PET, as well as a higher melting point and structural stability compared to Re-PET. Subsequently, Re-PET and SiO2/Re-PET asphalt mastics under a filler–asphalt ratio of 1.0 were prepared, and their classical and rheological properties were investigated and compared. The results indicated an increase in the softening point and shear strength of SiO2/Re-PET asphalt mastic, as well as a significant improvement in its high-temperature performance. Furthermore, subsequent pavement performance tests revealed a significant improvement in the performance of SiO2/Re-PET asphalt mixtures compared to Re-PET asphalt mixtures. Consequently, the findings of this research promote the recycling of Re-PET, ultimately advocating for the sustainability of pavement construction.

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Section: Introductionmentioning

confidence: 99%

Surface Modification of Recycled Polyester Fiber and Performance Evaluation of Its Asphalt Mastic and Mixture

Xia,

Cao,

Zhang

et al. 2023

Sustainability

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“…The results from Marshall, indirect tensile, semicircular bending and acoustic emission tests showed that both types of fibers improve the mix strength and delay the development of the crack state [29]. Jiang et al studied the effect of polyester fibers (0.4%) and cement (1.5%) in CRAM and found that their addition led to an improvement in the performance at both low and high temperatures [30]. Wang et al investigated the influence of the mixing process of CRAMs reinforced with basalt fibers on the resistance to cracking.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Cold Recycled Asphalt Mixtures including Reinforcing Fibers

Carpani,

Bocci,

Bocci

2023

Sustainability

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In recent years, cold recycling techniques have been widely used all over the world thanks to their huge environmental advantages. However, their performances are lower than the traditional hot-mix asphalt, both for the longer time to develop the final mechanical properties, which leads to delays in the reopening to road traffic, and for the lower fatigue resistance. The present paper deals with the characterization of cold recycled asphalt mixtures (CRAM), made with 100% reclaimed asphalt pavement, where synthetic fibers were included to improve the fatigue performance. The investigation involved the analysis of the curing time, volumetric properties, stiffness, strength, rheological behavior and resistance to cyclic loading. The results showed that the use of synthetic fiber, with the optimum dosage, determined a higher CRAM performance, especially in terms of fatigue resistance.

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