This standard specifies the methods for testing concrete pipes, including reinforced, unreinforced, and prestressed types. It details the procedures for conducting hydrostatic, three-edge bearing, absorption, permeability, and straightness tests to evaluate structural integrity and watertightness.
Concrete pipes - Methods of test
Quick Reference Values
Oven drying temperature for absorption test105°C to 115°C
Boiling time for water absorption test5 hours
Crack width measured during bearing test0.25 mm
Weighing balance accuracy for absorption test0.1 percent of specimen mass
Key Formulas
Water Absorption (%) = [(M2 - M1) / M1] x 100 — where M1 is dry mass and M2 is wet mass
Crushing Load (kN/m) = Total applied load (P) / Effective length of pipe (L)
Practical Notes
During the three-edge bearing test, ensure the load is applied continuously and uniformly along the entire effective length of the pipe barrel.
For the hydrostatic test, all air must be bled from the pipe before full pressure is applied to prevent explosive failure.
Absorption test specimens must represent the full thickness of the pipe wall and be free from visible cracks.