6Brantberger M, Stitle H, Erikson M. Controlling grout sp- reading in tunnel grouting-analyses and developments of the gin-method[J]. Tunnelling Underground Space Teehn,2000 (15) :343.
8Florida Department of Transportation. FDOT standard spe- cifications[Z]. America: Florida Department of Transporta- tion, 2002.
9ASTM C939-97. Standard test method for flow of grouts for pre-placed aggregate concrete (flow cone method) [S]. A- merica. Philadelphia, 1997.
10ASTM C940-98a. Standard test method for expansion and bleeding of freshly mixed grouts for preplaced-aggregate concrete in the laboratory[S]. America:Philadelphia,1998.
