Grouting material

C - Chemistry – Metallurgy – 09 – K

Patent

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Details

C09K 17/44 (2006.01) C09K 17/02 (2006.01) C09K 17/06 (2006.01) C09K 17/08 (2006.01) C09K 17/10 (2006.01) C09K 17/14 (2006.01) C09K 17/24 (2006.01) C04B 18/14 (2006.01) C04B 22/08 (2006.01) C04B 22/14 (2006.01) C04B 24/06 (2006.01) C04B 24/30 (2006.01) C04B 28/02 (2006.01) E02D 3/12 (2006.01)

Patent

CA 2646655

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.

Matière de mortier liquide caractérisée en ce qu'elle comprend 3-40 % en masse de scorie de ciment, 60-97 % en masse de laitier de haut fourneau et 0,5-3 parties en masse de plâtre en termes de quantité de SO3 pour 100 parties en masse de la somme de la scorie de ciment et du laitier de haut fourneau et en ce qu'elle contient en plus 0,7-7 parties en masse de (i) un adjuvant en aluminate de calcium de durcissement rapide ; 0,01-0,13 partie en masse de (ii) un retardateur de durcissement ; et 0,2-1,0 partie en masse de (iii) un plastifiant réducteur d'eau haute performance pour 100 parties en masse des matières particulaires ultrafines présentes dans la scorie de ciment, le laitier et le plâtre qui ont un diamètre maximal de particule inférieur ou égal à 15 µm. La matière de mortier liquide conserve une injectabilité élevée pendant longtemps. Après injection, la matière commence rapidement à durcir pour atteindre une solidité initiale satisfaisante.

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