| 摘要 |
<p>The cement comprises material from mineral and organic origin, particularly vegetal and animal origin. The components of mineral origin are lime, potash alum, sand, gravel and additives amounting 45 percent. The ingredients of organic material from vegetal origin are sawdust, wood chips, and wood fibers and recycled wood in an amount of 50 percent, and from animal origin are preferably beef and pork amounting 5 percent. The water is added to the mixture. The resulting material undergoes various hardening processes, casting, and machining leading to the formation of new products.</p> |
