University of California Pavement Research Center

The Asphalt Compaction Mold is designed to be user friendly, safe, and have maximum versatility. Many of its components are modular, and interchangeable. The ingot molds themselves are designed to be used in multiple orientations, and multiple styles of molds can be used to make many different sizes of specimens. The overall system has many redundant features, to provide for the safest level of operation, and ease of use. Even though the mold was designed to be used with a smaller riding compactor, the strength of the assembly allows it to accommodate weights of up to 22,000 pounds safely. The safety guards allow the use of a rolling wheel up to 36” wide to make edge of wheel to center of mold passes, with 2” clearance on either side. The operating instructions for the Asphalt Compaction Mold, (ACM), are presented along three main topics: a discussion about the function of each of the major components, the assembly procedures for each of the components, and a description of the use or operation of the components. These instructions are written to describe the basic, single unit, 4” lift mold. The last chapter discusses the additional equipment used when expanding the mold to accommodate ingot molds for both 8” and 12” lifts.