| 摘要 |
<p>By the known methods for the manufacturing of lightweight-concrete great mixing units are used together with autoclaves in which the deposited concrete elements are hardening. This does not make it possible to deposit the concrete on the building site, and the size of the autoclave limits the size of the elements. This need is supplied by means of a method, where the individual mixing tanks are independent mixing units with agitator mixing by means of a pump which through circulation to the tank is circulating and thus mixing the materials. By letting the last but one tank (4, 5) be a measuring tank and the last tank (6, 7) a plant-mixing container, where the gas generating means are added, a continuous concrete manufacturing is achieved, which can be adjusted according to the requirement. Furthermore the cleaning of the plant is very simple, as the water is allowed to pump through the plant and rinse this. By using partly reaction means and partly gas generating means a lightweight-concrete may be manufactured which hardens at a normal temperature and pressure in atmospheric air, and by which the autoclaving can be totally avoided. </p> |
