Next Article in Journal
Nanoscale and Macroscale Scaffolds with Controlled-Release Polymeric Systems for Dental Craniomaxillofacial Tissue Engineering
Next Article in Special Issue
Feasibility Evaluation of Preparing Asphalt Mixture with Low-Grade Aggregate, Rubber Asphalt and Desulphurization Gypsum Residues
Previous Article in Journal
Al2O3-Cu Substrate with Co-Continuous Phases Made by Powder Sintering Process
Previous Article in Special Issue
Excellent Carbonation Behavior of Rankinite Prepared by Calcining the C-S-H: Potential Recycling of Waste Concrete Powders for Prefabricated Building Products
Article Menu
Issue 8 (August) cover image

Export Article

Open AccessArticle
Materials 2018, 11(8), 1476; https://doi.org/10.3390/ma11081476

Effect of Rejuvenator Containing Dodecyl Benzene Sulfonic Acid (DBSA) on Physical Properties, Chemical Components, Colloidal Structure and Micro-Morphology of Aged Bitumen

1
Engineering Research Central of Pavement Materials, Ministry of Education, Chang’an University, Xi’an 710064, China
2
School of Civil Engineering, Qinghai University, Xining 810016, China
3
Highway Researching and Designing Institute of Qinghai Province, Xining 810001, China
4
Inner Mongolia Transportation Design Institute Co. LTD., Huhhot 010000, China
*
Authors to whom correspondence should be addressed.
Received: 24 July 2018 / Revised: 4 August 2018 / Accepted: 14 August 2018 / Published: 20 August 2018
(This article belongs to the Special Issue Environment-Friendly Construction Materials)
Full-Text   |   PDF [3290 KB, uploaded 20 August 2018]   |  

Abstract

DBSA was used as a solubilizer together with conventional rejuvenator (CR) to produce a solubilized rejuvenator (SR), two kinds of aged bitumen involving TFOT aged bitumen and PAV aged bitumen were obtained by thin film oven test (TFOT) and pressurized aging vessel (PAV), respectively. Effects of CR and SR on the physical properties, chemical components, colloidal structure and micro-morphology of TFOT aged bitumen and PAV aged bitumen were investigated. Testing results of physical properties and chemical components indicated that CR and SR can replenish aged bitumen with necessary aromatics, TFOT aged bitumen that chemical component variation deteriorates its physical properties. With regard to PAV aged bitumen, of which the performance attenuation lies in chemical components variation and colloidal structure transformation, even if the content of CR reached up to 10 wt %, the regenerated bitumen cannot meet the regeneration requirement yet due to its definite influence on colloidal structure transformation, comparatively, sulfonic group in SR can react with the superficial atoms of asphaltenes to reform a solvation layer to facilitate the colloidal structure transformation of PAV aged bitumen, performance and beelike structure of regenerated PAV aged with bitumen with 10 wt % SR were approximated to that of virgin bitumen. View Full-Text
Keywords: aged bitumen; rejuvenator; solubilizer; colloidal structure; micro-morphology aged bitumen; rejuvenator; solubilizer; colloidal structure; micro-morphology
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Kuang, D.; Ye, Z.; Yang, L.; Liu, N.; Lu, Z.; Chen, H. Effect of Rejuvenator Containing Dodecyl Benzene Sulfonic Acid (DBSA) on Physical Properties, Chemical Components, Colloidal Structure and Micro-Morphology of Aged Bitumen. Materials 2018, 11, 1476.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top