COMPOSITION FOR USE AS A TWO COMPONENT BACK FILLED GROUT COMPRISING EXTRACTED SILICATE

摘要

A multi-component cementitious composition with at least a binder and a hardener component, wherein the binder component includes ground granulated blast furnace slag and water and wherein the hardener component includes a sodium silicate solution containing at least 42 wt.-%, preferably at least 45 wt.-% or sodium silicate (Na2SiO3). Such multi-component cementitious compositions have been found to provide excellent early strength in excess of 0.5 mPa after hardening for just 2 h with a gel time in the range of 10 to 20 s. In addition the binder components are stable or at least remixable for up to 4 d in the absence of the hardener, which makes them particularly suitable for back filled grouts.

主权项

1. A multi-component cementitious composition with at least a binder and a hardener component,
wherein the binder component comprises ground granulated blast furnace slag and water and wherein the hardener component comprises a sodium silicate solution containing at least 42 wt.-%.