Abstract: A grouting material which contains a fine particle material having a Blaine specific surface area of 5000 cm2/g or more, containing 30 to 60% by mass of cement clinker, 40 to 70 % by mass of and blast-furnace slag and 0.5 to 3 parts by mass of gypsum in terms of SO3 based on 100 parts by mass of the total amount of cement clinker and blast-furnace slag, and further contains (i) 4 to 8 parts by mass of calcium-aluminate-based rapid-hardening admixture, (ii) 0.05 to 0.2 parts by mass of setting retarder and (iii) 0.5 to 1.7 parts by mass of high-performance water-reducing agent, based on 100 parts by mass of the fine particle material.

Abstract: To provide an ultrafine particle grouting composition which is excellent in dispersibility and dispersion retainability and can be easily injected into minute spaces between particles of grounds, rock cracks, and the like.

Abstract: A grouting material which contains a fine particle material having a Blaine specific surface area of 5000 cm2/g or more, containing 30 to 60% by mass of cement clinker, 40 to 70% by mass of and blast-furnace slag and 0.5 to 3 parts by mass of gypsum in terms of SO3 based on 100 parts by mass of the total amount of cement clinker and blast-furnace slag, and further contains (i) 4 to 8 parts by mass of calcium-aluminate-based rapid-hardening admixture, (ii) 0.05 to 0.2 parts by mass of setting retarder and (iii) 0.5 to 1.7 parts by mass of high-performance water-reducing agent, based on 100 parts by mass of the fine particle material.

Abstract: A grouting material which comprises an ultrafine particle material having a maximum particle size of 15 micrometer or less, containing 3 to 40% by mass of cement clinker, 60 to 97% by mass of and blast-furnace slag, 0.5 to 3 parts by mass of gypsum in terms of SO3 based on 100 parts by mass of the total amount of cement clinker and blast-furnace slag, and further comprises (i) 0.7 to 7 parts by mass of calcium-aluminate-based rapid-hardening admixture, (ii) 0.01 to 0.13 parts by mass of setting retarder, and (iii) 0.2 to 1.0 parts by mass of high-performance water-reducing agent, based on 100 parts by mass of the ultrafine particle material can maintain high injectability for long, and rapidly starts to set after injected to thereby exhibit a good short-term strength.

Abstract: A grouting material which comprises an ultrafine particle material having a maximum particle size of 15 micrometer or less, containing 3 to 40% by mass of cement clinker, 60 to 97% by mass of and blast-furnace slag, 0.5 to 3 parts by mass of gypsum in terms of SO3 based on 100 parts by mass of the total amount of cement clinker and blast-furnace slag, and further comprises (i) 0.7 to 7 parts by mass of calcium-aluminate-based rapid-hardening admixture, (ii) 0.01 to 0.13 parts by mass of setting retarder, and (iii) 0.2 to 1.0 parts by mass of high-performance water-reducing agent, based on 100 parts by mass of the ultrafine particle material can maintain high injectability for long, and rapidly starts to set after injected to thereby exhibit a good short-term strength.

Abstract: To provide an ultrafine particle grouting composition which is excellent in dispersibility and dispersion retainability and can be easily injected into minute spaces between particles of grounds, rock cracks, and the like.