This paper presents information on Cold In-Place Recycling (CIR) and Cold In- place Recycling with Expanded Asphalt Mixture (CIREAM) based on recent best practices in Ontario, Canada. The production process of CIR and CIREAM reflects a sustainable pavement maintenance philosophy by including 100 percent Reclaimed Asphalt Pavement (RAP). The mechanistic properties and characteristics of the mix design depend on the properties of the existing (deteriorated) asphalt layer. The assessment of distresses and mix properties represents a critical point in the decision of applying CIR or CIREAM treatments. Several research investigations in Canada and the United States were analyzed to compare the two sustainable treatments. This paper presents the best practice in producing high quality CIR and CIREAM mixes. The construction and compaction process is presented as well as the typical curing times. The paper highlights the results of a preliminary performance evaluation of CIR and CIREAM sections based on laboratory testing of uncompacted mixes; field distress surveys; and performing Resilient Modulus tests on cores from CIR and CIREAM treated sections that have been in service for multiple years to determine the treatment efficiency and effectiveness. Advantages and disadvantages of using each treatment are identified and summarized in this paper.
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