| 摘要 |
PURPOSE:To obtain an earth anchor which is uniform, excellent in strength, and has a high reliability, by a method wherein, in case an earth anchor isinstalled through the pouring of a cement milk grout into underground, a hydrated silicate mineral of a specified wt%, such as magnesium, is added to a grout material. CONSTITUTION:In case an earth anchor is installed through the pouring of a cement milk grout material, a hydrated silicate material, containing 0.1-3.0%, based on the cement weight, of magnesium or magnesium.aluminium, is added to and mixed with the grout material. Sepiolite is used as a Mg hydrated silicate mineral, and attapulgite as a Mg.Al hydrated silicate mineral, both of them being a hydrated silicate mineral belonging to sepiolite-paramonmorillonite series. 0.1- 1.0% sepiolite and 0.3-3.0% attapulgite, based on the cement weight, are added. This permits the reduction of a bleeding without the deterioration of fluidity. |
