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ASTM C877M-21
Standard Specification for External Sealing Bands for Concrete Pipe, Manholes, and Precast Box Sections (Metric)
NORMA vydaná dňa 15.1.2021
Informácie o norme:
Označenie normy: ASTM C877M-21
Dátum vydania normy: 15.1.2021
Kód tovaru: NS-1016984
Počet strán: 6
Približná hmotnosť: 18 g (0.04 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Kategórie - podobné normy:
Anotácia textu normy ASTM C877M-21 :
This specification deals with the metric standard for three types of external sealing bands to be used in conjunction with concrete pipe, manholes, and precast box sections. The first type of bands shall be composed of rubber, mastic, and protective film elements, while the second type shall consist of a plastic film, reinforced, rubberized, asphalt, mastic coating with steel straps. The third type shall be composed of a backing band, an applied continuous butyl adhesive coating and an optional release element. All the elements of each type of sealing band shall have physical properties conforming with specified limits as determined through appropriate test methods herein provided.
Keywords:
bands, external, concrete pipe, joints,, ICS Number Code 23.040.80 (Seals for pipe and hose assemblies)
Doplňujúce informácie
| 1. Scope | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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 C14M, C76M, C412M, C478/C478M, C506M, C507M, C655M, C985M, C1417M, and C1433M. 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 metric counterpart of Specification C877. 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 90 kPa, (9.14 m) 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.
1.3?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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| 2. Referenced Documents | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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