Effects of thermal oxidative ageing on dynamic viscosity, TG/DTG, DTA and FTIR of SBS- and SBS/sulfur-modified asphalts

Zhang, Feng; Yu, Jianying; Han, Jun

doi:10.1016/j.conbuildmat.2010.06.048

Cited by 234 publications

(78 citation statements)

References 22 publications

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“…e di erential scanning calorimetry (DSC) test shows that the peak, peak width, and peak area of the DSC curve are closely related to the microstructure characteristics of the sample. e macroperformance of composite-modi ed asphalt is mainly a ected by the aggregation state of asphalt and modi er, while the aggregation state of asphalt and modi er in the range of endothermic peak temperature is also re ected in the location and area of endothermic peak [22]. e thermal analysis curves of matrix asphalt, SBS-modi ed asphalt, and silica fume/SBS composite-modi ed asphalt are shown in Figures 14-16. e analysis of the TGA curve showed that the thermal weight loss rate of the matrix asphalt was 100% when the temperature was within the range of (35°C, 220°C).…”

Section: Thermal Analysis Testmentioning

confidence: 99%

High- and Low-Temperature Properties and Thermal Stability of Silica Fume/SBS Composite-Modified Asphalt Mortar

Cao

Chen

et al. 2018

Advances in Materials Science and Engineering

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Recently, China has started paying more attention to environmental protection, and the efficient utilization of exhaust gases produced by smelting has emerged as a key problem concern. e silica fume collected from the exhaust gases produced by smelting ferrosilicon or industrial silicon was often used as a cement concrete admixture. Using silica fume as an asphalt modifier can make exhaust gases profitable. In this study, silica fume/SBS composite-modified asphalt mortar was prepared to improve the performance of asphalt. e effects of the silica fume content, temperature, and ratio of filler asphalt on the composite-modified asphalt mortar were studied through the cone penetration, softening point, viscosity, dynamic shear rheological (DSR) test, and bending beam rheometer (BBR) test. e thermal stability of composite-modified asphalt was analyzed through the thermal analysis test. e results showed that with the increase of silica fume content and ratio of filler asphalt, the high-temperature performance of asphalt mortar was improved; the content of silica fume had a great influence on the low-temperature performance of asphalt mortar, the optimum silica fume content was 7%; increasing the ratio of filler asphalt reduced the low-temperature cracking resistance of asphalt mortar; the incorporation of silica fume enhanced the initial decomposition temperature, thermal residual rate, temperature in which the weight loss rate reaches the maximum, and the endothermic peak of maximum temperature and improved the properties of asphalt.

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Section: Thermal Analysis Testmentioning

confidence: 99%

High- and Low-Temperature Properties and Thermal Stability of Silica Fume/SBS Composite-Modified Asphalt Mortar

Cao

Chen

et al. 2018

Advances in Materials Science and Engineering

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“…Scans were performed using circular sealed cells (ZnSe windows and 1 mm thickness). All spectra were obtained by 32 scans with 5% iris and 4 cm -1 resolution in wave numbers ranging from 1900 to 500 cm -1 [20][21][22][23][24]. In this study, sulfoxide band and carbonyl band in the infrared spectra related were investigated to determine aging effect of modified asphalt binders.…”

Section: Fourier Transform Infrared (Ftir) Spectroscopymentioning

confidence: 99%

Short Term and Long Term Aging Effects of Asphalt Binder Modified with Montmorillonite

Abdullah

Zamhari

Buhari

et al. 2013

KEM

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Abstract. Nowadays, most of asphalt used in pavement construction is produced from petrochemicals through refining process of crude oil. When evolves with time, asphalt become stiffer and brittle due aging process. In this paper, the rheological effect of short-term and long-term oxidative ageing of asphalt binder modified with montmorillonite (MMT) was studied using Superpave™ rotational viscometer (RV), dynamic shear rheometer (DSR) and Fourier transform infrared (FTIR) instruments. The results indicate the addition of MMT increased the viscosity. Based on dynamic mechanical analysis with DSR, MMT modified binder has a potential to increase rutting and fatigue resistance. In terms of FTIR test, it appears that the chemical bonding had changed in the asphalt binder before and after RTFO and PAV aging which suggest that the additional of MMT could delay the aging process.

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“…Amongst these techniques, FTIR has been increasingly used lately to investigate changes in the chemical composition due to oxidative aging. Recent FTIR devices do not require large and environmentally controlled lab space because of their compact design, require very small amount of sample for testing, and are time and cost efficient [25][26][27][28][29][30][31][32][33][34]. In general, the objective of infrared spectroscopy, as in FTIR, is to gain information on how much a given sample absorbs light (i.e.…”

Section: Introductionmentioning

confidence: 99%

Repeatability and sensitivity of FTIR ATR spectral analysis methods for bituminous binders

et al. 2017

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Bituminous binders as organic materials are prone to aging mainly by oxidation. Aging changes the viscoelastic behavior of the material over time towards higher stiffness and brittleness. FTIR has been increasingly used lately to investigate impacts of oxidative aging on the chemical structure of bitumen. Especially the carbonyl and sulfoxide bands are affected by aging and commonly used to describe changes due to evolving oxidation of a binder. However, spectra obtained from FTIR can be analyzed in fundamentally different ways and the analysis method applied to a spectrum has an impact on the gathered results and especially on the repeatability and sensitivity with regards to oxidative changes. For the presented study, two bituminous binders, a PG 64-16 and an SBS modified PG 76-22 PM were aged by RTFO and PAV and subsequently measured by FTIR. The obtained spectra (up to 90 individual spectra per aging state) were analyzed employing various methods using either the original or a normalized spectrum, a band maximum or integration based calculation of indices from an absolute or tangential baseline. By analyzing the coefficient of variation of the different analysis methods, it was found that not all analysis methods exhibit the same repeatability and sensitivity. From the findings of the study it can be recommended to work with normalized spectra, use an absolute baseline and work with integration of areas for index production in favor over band maximum based methods.

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Effects of thermal oxidative ageing on dynamic viscosity, TG/DTG, DTA and FTIR of SBS- and SBS/sulfur-modified asphalts

Cited by 234 publications

References 22 publications

High- and Low-Temperature Properties and Thermal Stability of Silica Fume/SBS Composite-Modified Asphalt Mortar

High- and Low-Temperature Properties and Thermal Stability of Silica Fume/SBS Composite-Modified Asphalt Mortar

Short Term and Long Term Aging Effects of Asphalt Binder Modified with Montmorillonite

Repeatability and sensitivity of FTIR ATR spectral analysis methods for bituminous binders

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