Mechanical performance of cup lump rubber modified asphalt mixtures incorporating polyphosphoric acid

Ansari, Anwaar Hazoor; Jakarni, Fauzan Mohd; Muniandy, Ratnasamy; Hassim, Salihudin; Elahi, Zafreen; Zair, Mohamed Meftah Ben

doi:10.1016/j.conbuildmat.2023.133625

Cited by 6 publications

(1 citation statement)

References 31 publications

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“…Through a comprehensive analysis of dynamic mechanical response under different loading and working conditions, the viscoelastic properties and high-temperature creep mechanical behavior of rubber powder-modified asphalt were systematically characterized. The effects of cup lump rubber and polyphosphoric acid on the mechanical properties of the asphalt mixture were investigated by Anwaar Hazoor Ansari et al [32]. The results demonstrated that the combined modification of CLA and PPA significantly enhanced the dynamic resilience modulus of the asphalt mixture.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Dynamic Modulus of High Content Rubber Asphalt Mixture

Zheng,

Zhang,

2024

Buildings

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Currently, the research on the mechanical properties of rubber-modified asphalt mixtures primarily focuses on small-scale investigations, with insufficient exploration into the performance of rubber particles and their relationship with the mechanism and properties of modified asphalt mixtures. Limited studies have been conducted on large-scale rubber modification in asphalt mixtures. Due to frequent use and subsequent high damage to existing asphalt pavements, incorporating rubber-modified asphalt mixtures can partially alleviate premature deterioration. Dynamic modulus tests were conducted using MTS equipment under unconfined conditions to investigate the viscoelastic behavior of rubber-modified asphalt mixtures with high rubber content and elucidate the influence of rubber particle content on the elastic deformation and recovery capability. The dynamic mechanical properties of the mixtures were determined at different loading rates, temperatures, and types of rubber-modified asphalt mixtures. Based on the test data, variations in the dynamic modulus, phase angle, storage modulus, loss modulus, loss factor, and rut factor of the rubber-modified asphalt mixtures under different loading frequencies, temperatures, and types were analyzed. The results demonstrate the pronounced viscoelastic behavior of rubber-modified asphalt mixtures. The mixtures exhibit enhanced elasticity at low temperatures and high frequencies, while their viscosity becomes more prominent at high temperatures and low frequencies. Under constant test temperatures, an increase in load loading frequency leads to a higher dynamic modulus; conversely, a decrease in dynamic modulus is observed with increasing test temperatures. The dynamic modulus of ARHM-25 at a frequency of 10 Hz is found to be 12.99 times higher at 15 °C compared to that at 60 °C, while at 30 °C, the dynamic modulus at 25 Hz is observed to be 2.72 times greater than that at 0.1 Hz. Furthermore, the rutting resistance factors of the asphalt mixtures increase with loading frequency but decrease with temperature. The rutting factor for ARHM-13 at a frequency of 10 Hz is found to be 22.98 times higher at 15 °C compared to that at 60 °C, while at a temperature of 30 °C, the rutting factor for this material is observed to be 3.09 times greater at a frequency of 25 Hz than at 0.1 Hz. These findings suggest that rutting is most likely when vehicles drive at low speeds in hot weather conditions.

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Section: Introductionmentioning

confidence: 99%

Experimental Study on Dynamic Modulus of High Content Rubber Asphalt Mixture

Zheng,

Zhang,

2024

Buildings

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Ultrathin Non‐van der Waals Chromium Sulfide: Liquid Phase Exfoliation, Characterization, and Self‐Powered Photoelectrochemical Photodetector Application

Su,

Kuklin,

Jin

et al. 2024

Adv Funct Materials

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In the search for new advanced 2D materials for technological applications and to expand the research of non‐van der Waals (non‐vdW) 2D electronic devices, this study presents a novel strategy for liquid phase exfoliation (LPE) of non‐vdW Cr2S3 to produce Cr2S3 nanosheets (NSs). By utilizing N‐methyl‐2‐pyrrolidone (NMP), bulk Cr2S3 is separated along the (001) plane, resulting in the formation of NSs with an average thickness of ≈3 nm. Various characterization techniques are applied to the Cr2S3 material before and after LPE. Subsequently, the obtained Cr2S3 NSs are integrated into a photoelectrochemical (PEC)‐type photodetector (PD) to evaluate the photoelectric conversion efficiency under varying conditions. The findings indicate that the developed PD exhibits a distinct self‐powered photodetection capability with a photocurrent (Pph) of 39.5 nA cm−2, a photoresponsivity (Rph) of 622 nA W−1, and a detectivity (D*) of 0.5 × 107 Jones under 350 nm irradiation at 0 V. Moreover, the PD demonstrates rapid response time (0.06 s) and good long‐term stability (over 15 days), thus providing valuable insight for the advancement of non‐vdW Cr2S3‐based optoelectronic devices.

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