Method for manufacturing concrete construction blocks for a wind-turbine tower and associated system

A method of manufacturing concrete construction blocks for a wind-generator tower comprised of at least a first block, a second block and a third block, the first block, second block, and third block being secured to one another by a contact surface of each of the first block, second block and third block, the method comprising the following consecutive steps:

• pouring concrete into a first cage of reinforcements so as to obtain the first block comprising a first contact surface;
• pouring concrete into a second cage of reinforcements so as to obtain the second block, the second cage of reinforcements being provided in a form, the first contact surface of the first block making up a wall for delimiting the pouring of the concrete to form a first contact surface of the second block,
• wherein a bottom surface of said form is spaced from a base of a system for manufacturing at a distance about a height of the first block in a direction orthogonal to the first contact surface;
• detaching the first block and the second block after moulding of the second block due to a releasing product coated on the first contact surface of the first block prior to the step of pouring of the concrete to form the second block;
• extracting the first block from said system for manufacturing;
• transporting the second block under said form;
• and
• pouring concrete into a third cage of reinforcements so as to obtain the third block, the third cage of reinforcements being provided in said form, a second contact surface of the second block making up a wall for delimiting the pouring of the concrete such as to form a first contact surface of the third block, the bottom surface of said form being spaced from the base of said system for manufacturing at a distance about a height of the second block in a direction orthogonal to the first contact surface,
• wherein each of the first block, second block and third block is hollow and comprises a lateral wall limited by a lower end and an upper end, said lower end forming the first contact surface of the block.