| 摘要 |
The present invention aims to evenly and surely knead a concrete material comprising less water amount, a concrete material layer entered into a kneading tank is cut in an up-and-down direction and divided into a plurality of layer sections arrayed side by side along a right-and-left direction, and one of the divided layer sections is piled up another one of the divided layer sections in the up-and-down direction, then the piled up concrete layer sections are compacted, in other words, are pressed in the up-and-down direction and extended in a horizontal direction, and further these steps are repeated.
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