Influence of Anti-Stripping Green Additives on Binder Performance

Andrei Forton, Adelin Stirb () and Paul Marc
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Andrei Forton: Department of Overland Communication Ways, Foundation and Cadastral Survey, University Politehnica Timisoara, 1A Ioan Curea, 300224 Timisoara, Romania
Adelin Stirb: Department of Overland Communication Ways, Foundation and Cadastral Survey, University Politehnica Timisoara, 1A Ioan Curea, 300224 Timisoara, Romania
Paul Marc: Department of Overland Communication Ways, Foundation and Cadastral Survey, University Politehnica Timisoara, 1A Ioan Curea, 300224 Timisoara, Romania

Sustainability, 2023, vol. 15, issue 5, 1-18

Abstract: The purpose of this study was to evaluate the influence of anti-stripping green additives on the behaviour of a fresh binder. Firstly, the adhesiveness (spectrophotometric method) and affinity (rolling bottles method) of a binder with a penetration grade of 50/70 on two types of aggregates (natural quarry aggregates from two different sources) were investigated. The results show a weak bond and stripping between the 50/70 binder and the aggregates. Therefore, two different anti-stripping green additives (named A and B) were used in three percentages. A total of six blends were tested to establish the optimal content of the additive by performing a series of conventional tests combined with the adhesiveness test and the affinity test. Finally, the rheological behaviour of the optimal blends and of the fresh binder was investigated by performing DSR tests. The 0.4% dosage of green additive B was considered the most effective due to the fact that this dosage did not have a significant influence on the conventional properties and rheological behaviour of the 50/70 binder but had a major impact on the adhesiveness (15% increase), affinity after 6 h (13% increase), and affinity after 24 h (25% increase).

Keywords: green additives; adhesiveness; affinity; sustainability; binder (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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