Expanding Application Rate Guidance for Salt Brine Blends for Direct Liquid Application and Anti-icing

Problem

Direct liquid application (DLA) has been shown to be effective at clearing snow and ice while using less salt than granular salt application. However, a lack of detailed guidance and application rates for multiple brine blends across a variety of weather and pavement conditions may prevent some agencies from fully utilizing DLA as a winter maintenance strategy.

Objectives

To expand on the currently available guidelines for the use of brines and brine blends for DLA and anti-icing. By providing a more complete set of application rates for various pavement temperature ranges and road surface conditions, this project will help facilitate expanded use of DLA and anti-icing at agencies across the country.

Expected Results

A more robust set of data is necessary to provide agencies with the information needed to apply various liquid deicers in a broader range of field conditions, particularly at lower temperatures. This project will gather that data through a survey of practice and subsequent field testing. The test results, along with the survey results and information gathered in a literature review, will be used to create a set of application rate tables for brine and brine blend usage for DLA and anti-icing.

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