Shigen-to-sozai, Vol.118, No.1, pp.29-35.
Study on Injection Experiment to Simulated
Ground of Grout Materials and
Applicability of Injection Analysis which
Introduced Filtration Theory
-Study on infiltration behavior of grout
materials in grouting (2nd Report)-
Makoto KOGAa, Hideki SHIMADAb and Kikuo MATSUIb
| a. Graduate Student, Kyushu University b. Graduate Schools of Engineering, Kyushu University |
| A bleeding examination and a flow characteristic
examination of grout materials were performed
to understand the fundamental characteristic
of grout materials. Moreover, an injection
experiment of grout materials which used
a decomposed granite was conducted to understand
the applicability of the analysis technique
which introduced filtration theory. The results
are as follows: 1) When cement water ratio is large, a bleeding speed becomes slow, but the bleeding ratio becomes small. 2) Plastic viscosity and yield stress become large with increase of cement water ratio. Particularly, plastic viscosity change greatly on C/W= 1/ 1.6. And as compared with yield stress, it is larger about influence on the discharge. 3) Where a cement water ratio does not exceed C/W=1/5, the clogging of the voids was done by a suspension custody. And where C/W= 1/3.5, that was done by a surface filter layer. 4) The plastic viscosity measured using Brookfield viscometer is a result when some cement particles aggregate, and shows big value as compared with the theoretical relative viscosity. 5) The result of injection analysis using the theoretical relative viscosity assumed that the cement particle is distributing completely is well as an experiment result in agreement. In the grout materials which flow the inside of the voids, it cleared that plastic viscosity follows the theoretical relative viscosity which the cement particles distributed. |
| KEY WORDS: Grouting, Plastic Viscosity, Injection Experiment, Voids Clogging, Aggregation |