Injection manner and grouting material injection device null of grouting

摘要

PROBLEM TO BE SOLVED: To provide a ground injection material injecting device in which the ground injection material has a good permeability into the ground, and also by which the ground injection material having excellent permeability and having a characteristic suitable for the ground can be injected while relatively easily preparing it at site. ;SOLUTION: In a ground injection material injecting device, after superfine particulate cement and dispersant solution have been mixedly kneaded by a mixer 2, the constitution of the superfine particulate cement in the mixedly kneaded material is ultrasonically dispersed by a ultrasonic dispersing unit 3. Then, the ground injection material after ultrasonic dispersion is injected into the ground by an injection pump 5. In this case, since the grain size of cement is very fine and has a good dispersiveness, a good permeability of the ground material can be obtained. Further, even in the ground of hard injection, the ground injection material can permeate well and good in it, so that the characteristics thereof can be easily developed. Even in the case where kaolin which is further fine powder and has strong cohesion is mixed in cement and used, the clogging of a flow passage is not caused, and further good permeability can be obtained.;COPYRIGHT: (C)1998,JPO