| 摘要 |
<p>The present invention relates to a shotcrete composition with improved performance manufactured by using blast furnace slag fine powders, cement, and a cement mineral accelerator, and to a shotcrete construction method using the same. The shotcrete composition is manufactured by using a mixture of water, cement, fine aggregate, and coarse aggregate. According to an embodiment of the present invention, the shotcrete composition manufactured by varying the components of slag comprises blast furnace slag fine powders, and an accelerator which is introduced to the mixture to promote condensation of the mixture, wherein a first cement contained in the cement is substituted for the blast furnace slag fine powders, and the amount of the first cement is within a range of 30 to 40 parts by weight, based on 100 parts by weight of the cement. In addition, as the accelerator, a cement mineral accelerator comprising alkali metal carbonate, calcium ferroaluminate powders, calcium aluminate powders, calcium hydroxide, and alkali metal aluminate in a predetermined ratio is used, thereby improving compressive strength and bending strength while reducing rebound.</p> |
