Improving storage stability and rheological performance of asphalt rubber modified with nanosilica and Sasobit
Source abstract
Abstract
In this study, nanosilica (NS) and Sasobit were incorporated into asphalt rubber (AR) binder to produce Si/Sa-AR binder. Various conventional rheological tests were performed to determine the rheological properties of Si/Sa-AR binder. Microscopic tests and four components test were performed to investigate the interaction mechanism of Sasobit and NS with the AR binder. The results show that the combination of AR binder with Sasobit and NS improves the resistance of asphalt to fatigue cracking and permanent deformation. Microscopic images of the AR binder show a ‘dendritic’ structure consisting of multiple swollen crumb rubber (CR) particles and a three-dimensional (3D) network structure, which is reflected in the excellent rheological properties of AR. The addition of Sasobit and NS breaks up the ‘dendritic’ structure while improving the 3D network structure. NS promotes the formation of a homogeneous multiphase system of the modified asphalt binder, which in turn improves the storage stability.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Asphalt Pavement Performance Evaluation · Infrastructure Maintenance and Monitoring · Polymer Nanocomposites and Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Chang’an University
Wuhan Ecological Environment Design and Research Institute Co., Ltd
Luoyang Road Business Development Centre
China Airport Construction Group Corporation of CACC
Funding
Engineering Research Centre of Airport · Civil Aviation Administration of China · Luoyang Highway Business Development Centre
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