11. Isotropic volume change is especially important for CU testing, as cavitation of pore water sets the limit of undrained sand strength. 12. Changes of pore water content due to drying or wetting processes cause significant volume changes of concrete in load-free specimens. 13. The Solid-Phase Test exposes the bacteria in such a way that is not always possible with pore water and elutriate. 14. Zinc phosphate slowly reacts with calcium cations and the hydroxyl anions present in the cement pore water and forms a stable hydroxyapatite layer. 15. Moreover, these methanogens change the structure of the tailings pond and help the pore water efflux to reuse for processing oil sands. 16. Other important reactions include the formation of chlorite, glauconite, illite and iron oxide ( if oxygenated pore water is present ). 17. Normally, this test provides results indicating equal or higher toxicity when compared to eluate or pore water tests of the same sample. 18. These protocols are recommended for testing waste water treatment plant effluent, stormwater runoff, drinking water, pore water , and eluate. 19. This is primarily due to the surface tension of pore water in voids throughout the vadose zone causing a suction effect on surrounding particles. 20. These changes are dependent on the specific conditions that the rock is exposed as well as the composition of the rock and pore waters .
