| 摘要 |
<p>The invention relates to a premix for improving the tensile strength, toughness and liquid-tightness of set construction materials derived from a suspension, such as concrete. The invention also relates to a method for manufacturing a concrete mortar. The invention provides a premix for improving the tensile strength, toughness and liquid-tightness of set construction materials derived from a suspension, such as concrete. The premix comprises fibres which are rough at the surface, and elongated fibres with hook-like deformations on at least both ends and, possibly, polypropylene fibres. It has been found that the fibres which are rough at the surface, have a tensile strength enhancing effect on the eventual construction. The elongated fibres with hook-like deformations have a toughness enhancing effect on the eventual construction. By using the polypropylene fibres, the setting process of the concrete improves, so that the liquid-tightness of the eventual concrete construction is improved.</p> |
