July 8, 2026

Why Rheology Matters: Measuring Topical Rejuvenator Impact on Asphalt Performance

Topical (“spray-on”) asphalt rejuvenators are an effective preservation solution to mitigate the effects of asphalt binder aging. Effectiveness of these treatments is determined by how the rejuvenator interacts and impacts mechanical behavior of the existing asphalt in response to traffic, climate and time. Rheological testing of the asphalt binder therefore provides the most practical and objective framework for evaluating rejuvenator performance.

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Rachel Jackson0 commentIndustry News
Distributor spraying AMIGUARD RPE-R
May 11, 2026

Critical Issues and Misconceptions in Spray-Applied (“Spray-On”) Asphalt Rejuvenation

Asphalt rejuvenation has been used for decades as a pavement preservation tool, but advancements in the category are not reflected in today’s spray-on asphalt rejuvenator (SOR) conversations. As a result, performance is often measured using outdated and sometimes proprietary frameworks, creating a disconnect in what’s being measured and what actually drives pavement performance. The challenge is not that rejuvenators lack supporting data, but that success metrics have not been reassessed as new technologies and research have emerged. 

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Cari DoemlandAMIGUARD RPE-R, Industry News, Our Products