| abstract |
An object of the present invention is to provide a quick-setting cement for prelining, which has a high fluidity, facilitates filling work without gaps in a digging groove or a slit, or facilitates pressure feeding, has a rapid strength development, and has a sufficiently high strength when hardened, in particular, a sufficiently high initial strength. Provide concrete etc. The quick-setting cement concrete for prelining is characterized in that the content of the quick-hardening material is 20 to 40 parts by weight based on 100 parts by weight of cement. The quick-setting cement concrete for prelining of the present invention has a high fluidity, is easy to perform filling work and pressure feeding without leaving gaps in excavation grooves and slits, has a rapid strength development, and has a high strength when hardened, especially in the initial stage. Because the strength is high enough, it is suitable for pre-lining method in super large section, flat section and deep tunnel. [Selection diagram] None |