Optimization of bitumen formulations using mixture design of experiments (MDOE)
authors Varanda, C; Portugal, I; Ribeiro, J; Silva, AMS; Silva, CM
nationality International
journal CONSTRUCTION AND BUILDING MATERIALS
author keywords Aromatic extracts; Bitumen; Penetration; Softening point; Vacuum residue
keywords RESPONSE-SURFACE METHODOLOGY; POLYPHOSPHORIC ACID PPA; WARM MIX ASPHALT; CHEMICAL-COMPOSITION; PERFORMANCE; MODEL
abstract This work addresses the preparation of bitumen blends using asphaltic residue, vacuum residue, and three aromatic extracts (by-products) from the refining process of base oils. A constrained mixture design was adopted to guide bitumen formulation. The measured responses were fitted to Scheffe polynomial models, namely a quadratic model for the penetration value and a linear model for the softening point. Both models were validated using ANOVA. In a second stage the quadratic model was used to design formulations with a precise penetration value. The predicted and measured responses demonstrate the accuracy of both models with average deviations of only 4.67% and 1,53% for penetration and softening point, respectively. In the whole, mixture design has been shown to be a successful and essential tool for bitumen formulation especially if the blends involve a large number of components. (C) 2017 Elsevier Ltd. All rights reserved.
publisher ELSEVIER SCI LTD
issn 0950-0618
year published 2017
volume 156
beginning page 611
ending page 620
digital object identifier (doi) 10.1016/j.conbuildmat.2017.08.146
web of science category Construction & Building Technology; Engineering, Civil; Materials Science, Multidisciplinary
subject category Construction & Building Technology; Engineering; Materials Science
unique article identifier WOS:000413879400057
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journal analysis (jcr 2019):
journal impact factor 4.419
5 year journal impact factor 5.036
category normalized journal impact factor percentile 83.285
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