ASTM C877-2016 混凝土管、人孔和预制箱形部件的外部密封带规格 Standard Specification for External Sealing Bands for Concrete Pipe,Manholes,and Precast Box Sections

1.1 This specification covers external sealing bands to be used in conjunction with concrete pipe as defined in Terminology C822 and conforming to Specifications C14, C76, C412, C478, C506, C507, C655, C985, C1417, and C1433. 1.1.1 Type I, Rubber and Mastic Bands. 1.1.2 Type II, Plastic Film and Mesh Reinforced Mastic Bands. 1.1.3 Type III, Chemically-Bonded Adhesive Butyl Bands. 1.2 This specification is the inch-pound companion to Specification C877M; therefore, no SI equivalents are presented in the specification. Note 1: This specification covers only the design and material of the sealing bands. Sealing bands covered by this specification are adequate, when properly installed, for external hydrostatic pressures up to 13 psi, (30 ft) without leakage. The amount of infiltration or exfiltration flow in an installed pipeline is dependent upon many factors other than the sealing bands; allowable quantities and suitable testing of the installed pipeline and system must be covered by other specifications.