| abstract |
(57) [Abstract] [Problem] Even if the solid content of cement is 1.0% (w / v) or more, gelation does not occur, the amount of dehydration is small, the mud wall is thin, and good function is provided. Excellent cement resistance. The purpose is to find a regulator for drilling stabilization liquid. SOLUTION: The adjusting agent for excavation stabilization liquid, characterized by containing carboxymethyl cellulose and a zwitterionic polymer as main components, the excavation stabilization liquid using the adjustment agent, and civil engineering excavation using the excavation stabilization liquid. Construction method. |