Mineral fiber composition

Abstract

Abstract PURPOSE:To provide the titled composition having improved alkali resistance, and usable as a reinforcing material for cement mortar and concrete, by adding copper oxide to a mineral fiber composition consisting of blast furnace slag and silica. CONSTITUTION:The objective mineral fiber composition is composed mainly of 40-60(wt)% SiO2, 9-13% Al2O3, 25-38% CaO, 3-5% MgO and 2-10% CuO, and is obtained by compounding 60-90% blast furnace slag with 10-40% silica and 2-10% copper oxide. The addition of silica to blast furnace slag improves the tensile strength of the fiber, and the manufacture of a continuous fiber is facilitated by increasing the amount of silica. However, too much silica lowers the alkali resistance of the fiber. The alkali resistance of the fiber can be improved remarkably by the addition of copper oxide, and the fiber added with copper oxide can be used effectively as a reinforcing material for cement mortar, concrete, gypsum product, etc.

Inventors

• 👤 Akimitsu Okura
• 👤 大蔵　明光
• 👤 Itaru Yasui
• 👤 安井　至
• 👤 Ryoji Takagi
• 👤 良二 高木

Bibliographic Details