1.1本规范涵盖以下两种类型的预制泄压接缝填料，由具有适当压缩性和非挤出特性的多孔塑料材料制成。 1.1.1 I型闭孔聚乙烯，以及 1.1.2 II类，开孔聚氨酯。 1.2这些填缝料拟用于全深度接缝（约4.0英寸）的混凝土路面。（102 mm），以缓解应力或避免相邻结构或路面中的潜在损坏。 1.3以英寸表示的数值- 磅单位应视为标准。

1.1 This specification covers preformed pressure-relief joint fillers of the following two types made from cellular plastic materials having suitable compressibility and nonextruding characteristics. 1.1.1 Type I, closed cell polyethylene, and 1.1.2 Type II, open cell polyurethane. 1.2 These joint fillers are intended for use in concrete pavements in full-depth joints measuring approximately 4.0 in. (102 mm) in width to relieve stress or avoid potential distress in adjacent structures or pavements. 1.3 The values stated in inch-pound units are to be regarded as the standard.