Comparison of Ultracrete, Normal Cold Mix and Hot Mix for Pothole Repair Description Ultracrete Normal Cold Mix Hot Mix High tensile, compressive and rupture strength Low Strength works in potholes only Excellent compressive strength with proper compaction Excellent Very low low Flexibility Yes Yes Yes Adhesion Excellent, no tack coat required Mainly mechanical interlock, laying tack coat is better Must be tack coated and compacted Yes No No No Special Skill set required No Special Skill set required Skilled crew familiar with Special Equipment Application Before repairs Minimal Surface Preparation even in wet condition Potholes must be clean thoroughly with no dust and not wet Potholes must be clean thoroughly with no dust and not wet Surface Excellent match to grade Poor Ride Smooth ride requires skilled crew during install Main Use Rapid, permanent repairs in all-weather condition Hot mix alternative patching, winter repairs New Construction Overlays Not designed for repairs Simple equipment and hand compactor Shover/Machine Compactor Asphalt truck plus specialized equipment and crew for application and compacting Surface Temperature for Application Any temperature 0oC and above 16oC minimum Ideal 22-35oC Repair Depth Any potholes 6mm to full depth Potholes 10 mm to full depth Potholes 10 mm to full depth Compaction Hand compactor or compacted by traffic, NonShrinking, Flowable Must be Machine compacted to attain strength Must be Machine compacted to attain strength Availability Can be inventoried with Shelf life of 1 plus year, available when you need it! Can be inventoried, but dries out and has limited shelf life Must be purchased just prior to use and maintained hot, Subject to hot mix plant availability Potholes Preparation Minor preparation, No removal, Excellent match to grade Temporary repair, Poor match to grade Requires removal, squaring off, base repair prior to repair Yes No No Utility cuts Any width ½ inch and up – One stop repair – Fast return to service. Temporary Repair First repair with cold mix and then replace with hot mix later Manholes Permanent, No removal required Temporary Repair Must be removed prior to repair Mechanical Strength Edge Strength Water Resistance Manpower Requirements Equipment Repair Mismatched grades