| 摘要 |
<p>After grading of the ligneous part of hemp obtained by mechanical beating of hemp, it is impregnated with a calcium or barium salt in solution, preferably calcium chloride, a first bleeding of the impregnated ligneous part of hemp is then carried out by incorporating into the above solution pulverised hard bodies such as, for example, silica, lime or cement, with the exclusion of slag or alumina cements, a solution of sodium silicate is then sprayed onto the mixture obtained, which causes a petrification of the core of the ligneous part of hemp as well as a silicate treatment of its sheath and of the powdered hard bodies, finally a second quantity of pulverised hard bodies such as, for example, silica, lime or cement, with the exclusion of slag or alumina cements, is incorporated in the mixture containing the petrified ligneous part of hemp, and this results in a silicate-containing coating of the ligneous part of hemp, while causing the immediate bleeding of the said mixture, the constituents employed by the said process having suitable proportions relative to each other. The invention relates especially to the concrete produced from a charge at least partly incorporating the product obtained by application of the process according to the invention.</p> |
