| 摘要 |
<p>PURPOSE:To obtain a back-filling grout having an excellent durability and a solidifying time which can be easily adjusted in the range of a few sec to 1min. CONSTITUTION:A back-filling grout contg. water-glass, slaked lime, and fly ash and/or slag, pref. further in combination with cement and/or pozzolan and satisfying the conditions that the molar ratio of water-glass is at most 2.5 and that 1000ml of the liquid mixture of water-glass, slaked lime, fly ash and/or slag, and water added thereto contains at least 100g of slaked lime, at least 100g of fly ash and/or slag, and at least (20g in terms of SiO2) of water-glass.</p> |
