本文介绍了美国宾夕法尼亚州采用核子密度计测定路面密度,并与常规试验取得联系,用于控制路面质量和防止路面松散破坏。所制定的压实标准和沥青、细料用量标准可作为验收和对承包商付款的技术依据。可供我国公路工程质量验收和建立工程承包制度参考。文中对于芯样密度与核子密度的关系、压实与付酬系数的关系作了较为详细的阐述。 This article describes the use of nuclear densitometers in the United States of Pennsylvania to determine pavement densities and to establish contact with routine tests to control pavement quality and prevent loose pavement damage. The compaction standards and bitumen and fines standards established can be used as the technical basis for acceptance and payment to contractors. For our highway engineering quality inspection and establishment of project contract system reference. In this paper, the relationship between core density and nuclear density and the relationship between compaction and pay coefficient are elaborated in detail.