Look up BFT-International and Science Direct both have articles on it. Some refer to plastic shrinkage and others early age shrinkage.
Three D printing of concrete seems to be almost a decade or more on the go. The issue apoears to be that the structure or component cracks fairly early in its life.
My view of concrete is its great strength but when it starts failing then the solutions seem to all be pretty expensive.
Ann: Non-cash impairment of Austral Masonry/Brickworks NA CGUs, page-19
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