| abstract |
(57) [Problem] To provide a method for producing a blast-resistant high-strength cementitious cured product that can prevent explosion of the cured product. SOLUTION: In the method for producing a high-strength hardened cementitious body having a compressive strength of 150 MPa or more and a bending strength of 30 MPa or more, a method of manufacturing a metal fiber (eg, having a length of 2 mm) And a length / diameter ratio of 20 or more of steel fibers) is 0.5 to 4.0% by volume (internal ratio), and the diameter is 0.08 to 0.1. Organic short fibers having a length of 2 mm and a length of 0.5 to 4.0 mm are 2.0 vol% or more and less than 4.0 vol% (outside ratio), and a diameter of 0.03 to 0.05 mm and a length of 6.0 to 12 are used. .0m m of the organic long fiber is 0. Molding, curing and curing of a kneaded product containing 5 to 1.0% by volume (outside ratio) and having a flow value of 240 mm or more. In addition, organic short As long fibers, vinylon fibers, polypropylene fibers, and the like are used. |