Inverse Laplace Transform (ILT) NMR: A powerful tool to differentiate a real rejuvenator and a softener of aged bitumen

被引：27

作者：

Caputo, Paolino ^{[1
]}

Loise, Valeria ^{[1
]}

Ashimova, Saltanat ^{[1
]}

Teltayev, Bagdat ^{[2
]}

Vaiana, Rosolino ^{[3
]}

Rossi, Cesare Oliviero ^{[1
]}

机构：

[1] Univ Calabria, Dept Chem & Chem Technol, Via P Bucci,Cubo 14-D, I-87036 Arcavacata Di Rende, CS, Italy

[2] Kazakhstan Highway Res Inst, Nurpeisova Str 2A, Alma Ata 050061, Kazakhstan

[3] Univ Calabria, Dept Civil Engn, Via P Bucci,Cubo 46-B, I-87036 Arcavacata Di Rende, CS, Italy

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2019年 / 574卷

关键词：

Aged bitumen; Rejuvenator; Rheological properties; ILT; Nuclear magnetic resonance (NMR) spectroscopy; Scanning electron microscope (SEM); LOW-FIELD NMR; RHEOLOGICAL PROPERTIES; TEMPERATURE; PERFORMANCE; ASPHALT; PPA;

D O I：

10.1016/j.colsurfa.2019.04.080

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

ILT is particularly useful when the signal is characterized by multi-exponential decay, for example in spin relaxation or in the dephasing of the NMR spin echo signal associated with sopra molecular aggregation under the influence of pulsed magnetic or internal field gradients. As novel approach to observe the real rejuvenating effect of the potential additive, an Inverse Laplace Transform of the NMR spin-echo decay (T-2) was applied. The potentialities of a new, non-toxic and eco-friendly biocompatible additive on aged bitumen are explored for the first time as bitumen rejuvenator, by means of advanced rheological and Relaxometry-NMR measurements. Pristine, aged, and doped aged bitumen morphology have been investigated by SEM. The new rejuvenator helps to rearrange the structure of the aged bitumen (aiming at the original one), and this mechanism can be observed by ILTNMR analysis.

引用

页码：154 / 161

页数：8