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<br /> <br />Page | 21 <br /> <br />Pavement Management Technical Assistance (P-TAP) Round 24 <br />Mill and AC Overlay/ AC Overlay with SAMI - Rehabilitation Treatment <br />This treatment targets streets in at-risk to fair condition with signs of load-related distresses with <br />necessary profile grade adjustment. The treatment consists of cold milling (also known as cold <br />plane/grinding) the existing surface to a pre-determined depth with specialized milling equipment to <br />provide properly required grades. A new layer of asphalt concrete is then placed after the completion <br />of the milling operation. <br /> <br />SAMI stands for Stress Absorbing Membrane Interlayer (SAMI). This interlayer provides increased <br />flexibility and reduces the likelihood of surface reflective cracking. <br /> <br />AC Overlay with Rubberized Chip Seal - Rehabilitation Treatment <br />This treatment targets streets in poor conditions that need to be rehabilitated. This construction <br />method involves grinding the edges of the existing pavement, placing a 3/8” layer of asphalt-rubber <br />binder and aggregate pre-coated with paving asphalt (called rubberized chip seal), and then placing a <br />new surface course of 1.5” to 1.75” thick of asphalt concrete over the newly established chip seal layer. <br /> <br />Cold-in-Place Recycling (CIPR) 11- Rehabilitation Treatment <br />CIPR is a cost-effective, long-lasting, greener alternative to conventional maintenance and <br />rehabilitation techniques. Cold In-place Recycling (CIR) is a process that cold mills and recycles the top <br />2-5 inches of asphalt using a continuous train operation. By reusing existing material, CIR significantly <br />reduces trucking, time, and natural resources to substantially lower project costs. Generally, any road <br />candidate for mill & fill is a candidate for CIR. This treatment adds fifteen to twenty years of service <br />life with a combined appropriate wearing course. This treatment is typically 20%-50% less expensive <br />than conventional maintenance and reconstruction methods. Still, it requires a lot of upfront <br />coordination with various utility agencies to ensure that no utility facilities are within the 2-5 inches of <br />existing asphalt that will be milled. <br /> <br /> <br />11 https://roadresource.org/treatment_resources/cold_in_place_recycling <br />Page 189 of 228