Investigation of the Resistance of Freshly Injected Grout to Erosion and Dilution by Flowing Water.

摘要

The relative resistance of 35grout formulations to the effects of erosion and dilution by flowing water with a velocity of 0.3fps or more was determined by a series of height-of-grout measurements conducted at fixed intervals along the transparent side of a flow channel model. Grout retention in the channel was determined immediately after injection in the flowing water and after 1or 2hr of additional water flow. Grouts that were more resistant to the effects of flowing water than other grouts tested are identified,and the materials and physical properties contributing to their increased resistance are discussed.