东德利用一种质量较差的、从所谓“伐前砍截”得来的细碎木料作原料生产碎木混凝土预制构件。这种木料直接就在林中用切削机(刨花机)切碎,装在加高车帮的挂车上,用拖拉机拉到工厂。这种预制构件的生产并不复杂,也不需要很大投资。生产过程是:把碎刨花和350号波特兰(硅酸盐)水泥,加上使这两种成 East Germany uses a poor quality, finely divided wood derived from the so-called “cutting before cutting” as raw material to produce prefabricated pieces of chipped wood concrete. The wood was cut directly in the forest with a cutting machine (wood shaving machine), mounted on a trailer with a heightened car, and pulled to the factory with a tractor. The production of such prefabricated components is not complicated and does not require significant investment. The production process is: put crushed shavings and No. 350 Portland (silicate) cement, plus these two