concrete a high performance, autoplaçant and a high durability, particularly useful for manufacturing containers for storing and / or storing radioactive waste materials

摘要

The present invention relates to a concrete that has been specially designed for the manufacture of containers for storing and / or storage of radioactive waste and which combines the properties of high performance autoplaçant, durable secularly, ductile, at low shrinkage, confining screw - to - screw of the radionuclides, fire-resistant. This concrete is obtained from a formulation comprising: (1) is selected from among a cement cem i, cem ii cements, cem iii and v 10, a sand, limestone, a chip lime of size is greater than at most equal to 16 mm; at least one addition of lime or a siliceous; the metal fibers for measuring at least 30 mm long, of the organic fibers, at least one adjuvant for concrete, and water; and in which: (1) the ratio between the length of the metal fibers and the greater dimension of the chip is at least equal to 2,5; and (2) the effective water / binder is at most equal to 0,35. The present invention therefore relates to the use of the concrete in the manufacture of a container for storing and / or storage of hazardous materials, and in particular radioactive waste, as well as to such a container.