AASHTO PP 92-19（2020）涵盖了使用塑料模具压实装置（PM装置）制备高径比约为2:1的圆柱形试样，用于各种机械性能测试（例如抗压强度、弹性模量、抗拉强度）。本规程适用于化学稳定的土壤材料（例如水泥土）。本标准实施规程可在实验室中进行，或者，如果在施工现场进行，可能会产生类似的性能。

This standard practice covers the use of the plastic mold compaction device (PM device) to prepare cylindrical test specimens with an approximate 2:1 height-to-diameter aspect ratio for use in a variety of mechanical property testing (e.g., compressive strength, elastic modulus, tensile strength). This practice is intended for chemically stabilized materials (e.g., soil–cement, cement treated aggregate base, soil–lime). The PM device has been manufactured in two sizes [76.2 by 152.4-mm (3 by 6-in.) and 101.6 by 203.2-mm (4 by 8-in.)], and the appropriate PM device size is determined by the particle size distribution of the material being tested.Method A utilizes the 76.2 by 152.4-mm (3 by 6-in.) PM device (also referred to as 3x6) and is intended for material passing a 9.5-mm (3/8-in.) sieve.Method B utilizes the 101.6 by 203.2-mm (4 by 8-in.) PM device (also referred to as 4x8) and is intended for material passing a 19.0-mm (3/4-in.) sieve.This standard practice may be used to fabricate test specimens in the laboratory or in the field.