Abstract
The paper presents a global review of drain clogging hazard criteria. Some of them are simple granulometric formulae, some include an evaluation of soil structural stability, and some others are based on laboratory tests which reproduce water-flow through a soil core. A recent development is then described. Terzaghi's theory of critical hydraulic gradient explains structural break-up of soil samples by water-flow towards drain pipes. Based on this theoretical approach, a laboratory test has been designed to determine experimental values of the hydraulic gradient causing soil breaking. This test is used to compare the stability of different soil materials and to diagnose mineral clogging hazards.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
