Evaluation of cracking properties of SBS-modified binders containing organic montmorillonite

Liu, Shengjie; Zhou, Sheng Bo; Xu, Yan

doi:10.1016/j.conbuildmat.2018.04.185

Cited by 53 publications

(11 citation statements)

References 26 publications

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“…The interlayer spacing of the PLLA/EPDM/OMMT samples ranges from 3.39 to 3.53 nm. This indicates the insertion of some polymer molecular chains into OMMT lamellae during blending and processing, thus leading to the formation of the intercalated nanocomposites [43]. The result also proves that there is no obvious difference between the OMMT intercalated structures in the compression-molded ternary samples and the calendered ones.…”

Section: Crystallization Propertymentioning

confidence: 61%

Effects of Organic Montmorillonite (OMMT) and Pre-Orientation on Property of Poly(l-lactic acid) (PLLA)/Ethylene Propylene Diene Monomer (EPDM) Blends

et al. 2020

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Poly(l-lactic acid)/ethylene propylene diene monomer/organic montmorillonite (PLLA/EPDM/OMMT) samples were melt-compounded and then processed into sheets via two routes, namely, compression-molding and calendering. Tensile performance, morphology, and thermal property of the samples were investigated. Tensile test showed that the incorporation of OMMT resulted in significant enhancement in the tensile ductility of the PLLA/EPDM samples. SEM observation revealed that EPDM domain size decreased largely with increasing OMMT loading, indicating the compatibility of OMMT with PLLA/EPDM blends. Moreover, the elongation at break, tensile yield strength, and modulus of the calendered samples were found to be much higher than those of the compression-molded samples. It can be attributed to the pre-oriented rigid amorphous fraction of PLLA matrix and pre-stretched EPDM phases in the calendered samples produced by the stretching/shearing effect of calendering. Compared to the spherical/ellipsoidal EPDM particles in the compression-molded samples, these stretched EPDM phases with higher aspect ratio in the calendered samples can be more effective to initiate craze, and terminate the craze growing to a crack along transversal direction. Therefore, the calendered samples show a better tensile ductility than the compression-molded ones. Moreover, annealing was carried out to increase the crystallinity of the samples. Tensile performance, morphology, and thermal property of the annealed samples were also systematically investigated.

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Section: Crystallization Propertymentioning

confidence: 61%

Effects of Organic Montmorillonite (OMMT) and Pre-Orientation on Property of Poly(l-lactic acid) (PLLA)/Ethylene Propylene Diene Monomer (EPDM) Blends

et al. 2020

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“…The absorption peak at 1700 cm −1 is caused by the stretching vibration of carbonyl C=O, which is the characteristic peak of the functional group formed by asphalt aging. The strong absorption peak at 1031 cm −1 is caused by the vibration of the sulfoxide S=O functional group [39][40][41]. The infrared spectra peaks of WEO modified asphalt, WPE modified asphalt, and WEO/WPE mixture modified asphalt are basically the same as those of the matrix asphalt, indicating that WEO and WPE are physically blended with asphalt.…”

Section: Ftir Analysismentioning

confidence: 93%

The Effect of Waste Engine Oil and Waste Polyethylene on UV Aging Resistance of Asphalt

et al. 2020

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Waste engine oil (WEO) and waste polyethylene (WPE) are two common wastes, which are easy to pollute the environment. As the primary material in road construction, natural asphalt is a non-renewable energy source and asphalt is vulnerable to ultraviolet (UV) radiation during the service life. It results in degradation of asphalt pavement performance. In this paper, 2 wt % to 8 wt % of WEO and WPE were used to modify asphalts and the UV aging simulation experiment was carried out. The physical parameters of asphalts before the UV aging experiment show that the asphalt containing 4 wt % WPE and 6 wt % WEO mixture (4 wt % WPE + 6 wt % WEO) has similar physical properties with that of the matrix asphalt. Besides, gel permeation chromatography (GPC) verifies that the molecular weight distribution of the asphalt containing 4 wt % WPE + 6 wt % WEO is close to that of the matrix asphalt. The storage stability test shows that 4 wt % WPE + 6 wt % WEO has good compatibility with the matrix asphalt. The functional groups and micro-morphology of asphalts before and after the UV aging experiment were investigated by Fourier transform infrared spectroscopy (FTIR) and atomic force microscopy (AFM). FTIR results display that 4 wt % WPE + 6 wt % WEO can effectively reduce the formation of carbonyl and sulfoxide functional groups. AFM shows that 4 wt % WPE + 6 wt % WEO can also retard the formation of a "bee-like" structure in asphalt after the UV aging experiment. Based on the above results, it can be concluded that WEO and WPE mixture can replace part of asphalt and improve the UV aging resistance of asphalt.

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“…Based on the literature, incorporating NC particles with styrene-butadiene-styrene (SBS) polymer improved binder physical and rheological properties [ 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 ], aging characteristics [ 25 ], storage stability [ 21 , 22 , 26 ], fatigue cracking resistance [ 6 , 27 ], and rutting resistance [ 23 , 24 ]. Ren et al, 2020 investigated the effect of NC on the physical and rheological properties and the storage stability of three polymer-modified binders using; crumb rubber (CRM), styrene-butadiene-styrene (SBS), and styrene-butadiene-rubber (SBR) [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Nanoclay Particles on the Performance of High-Density Polyethylene-Modified Asphalt Concrete Mixture

2021

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Utilizing polymers for asphalt concrete (AC) mixture modification has many drawbacks that hinder its wide implementations for roadway construction. Recently, research on employing complementary materials, such as nanomaterials, to balance negative impacts of polymers while enhancing the AC mixture’s performance has received great attention. This study aimed to investigate the effect of incorporating nanoclay (NC) particles on the performance of a high-density polyethylene (HDPE)-modified AC mixture. A 60/70 asphalt binder was first modified with HDPE, and then NC particles were gradually added at a concentration of 1–4% by weight of the asphalt binder. The binders’ physical characteristics, storage stability, and chemical change were scrutinized. AC mixture performance, including pseudo-stiffness, moisture damage resistance, stripping susceptibility, and rutting tendency, was investigated. A statistical analysis on the experimental results was conducted using Kruskal–Wallis and Dunn tests. Test results showed that employing NC/HDPE significantly increased penetration index and thereby enhanced binder temperature sensitivity. Moreover, it prevented oxidation action and separation and, therefore, enhanced binder storage stability. Furthermore, incorporating NC amplified pseudo-stiffness and significantly improved resistance against moisture damage and stripping of HDPE-modified mixtures. Moreover, it improved both elastic (recoverable) and plastic (unrecoverable) deformations of mixtures. The most satisfactory results were attained when incorporating 3% of NC.

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Evaluation of cracking properties of SBS-modified binders containing organic montmorillonite

Cited by 53 publications

References 26 publications

Effects of Organic Montmorillonite (OMMT) and Pre-Orientation on Property of Poly(l-lactic acid) (PLLA)/Ethylene Propylene Diene Monomer (EPDM) Blends

Effects of Organic Montmorillonite (OMMT) and Pre-Orientation on Property of Poly(l-lactic acid) (PLLA)/Ethylene Propylene Diene Monomer (EPDM) Blends

The Effect of Waste Engine Oil and Waste Polyethylene on UV Aging Resistance of Asphalt

Effect of Nanoclay Particles on the Performance of High-Density Polyethylene-Modified Asphalt Concrete Mixture

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