DEP0054781DA - Manufacture of hydraulic binders - Google Patents
Manufacture of hydraulic bindersInfo
- Publication number
- DEP0054781DA DEP0054781DA DEP0054781DA DE P0054781D A DEP0054781D A DE P0054781DA DE P0054781D A DEP0054781D A DE P0054781DA
- Authority
- DE
- Germany
- Prior art keywords
- manufacture
- hydraulic binders
- binders
- filter ash
- pozzolans
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000011230 binding agent Substances 0.000 title claims description 5
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 239000003077 lignite Substances 0.000 claims description 5
- 239000004568 cement Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Description
Es ist bekannt, dass natürliche Puzzolane, wie Trass und Tuffstein, latente Binder darstellen, die ohne Zumischung eines Anregers nicht erhärten. Als Anreger wurden bisher Zement, Kalk, Gips usw., also Stoffe verwendet, die bei ihrer Herstellung gebrannt werden mussten. Der Erfinder hat mit der als Abfallprodukt bekannten Braunkohlenfilterasche Versuche zur Anregung natürlicher Puzzolane unternommen, die gute Resultate zeigten. Die Mischung von Puzzolan und Braunkohlenfilterasche erfolgt im Verhältnis 1 : 1 bis 1 : 10 je nach den verlangten Eigenschaften des Endproduktes. Es ergibt sich, dass die Puzzolane im Verhältnis der Beimischung von Braunkohlenfilterasche schneller oder langsamer mit guter Druckfestigkeit erhärten. Die hydraulischen Eigenschaften der so hergestellten Bindemittel sind ausgezeichnet. Die Eigenschaften werden noch gesteigert, wenn die Puzzolane vorher zu grösster Feinheit gemahlen werden. Auch kann die Braunkohlenfilterasche in Verbindung mit bisher bekannten Anregern verwendet werden. Die Bindemittel sind geeignet in Verbindung mit Zuschlagstoffen, wie Sand und Kies, ähnlich wie Zement verarbeitet zu werden.It is known that natural pozzolans, such as trass and tuff, represent latent binders which do not harden without adding an activator. Cement, lime, gypsum, etc., i.e. substances that had to be burned in their manufacture, were previously used as stimulators. With the lignite filter ash known as a waste product, the inventor undertook experiments to stimulate natural pozzolans, which showed good results. The mixing of pozzolan and lignite filter ash takes place in a ratio of 1: 1 to 1:10, depending on the required properties of the end product. The result is that the pozzolans harden faster or slower with good compressive strength in proportion to the admixture of lignite filter ash. The hydraulic properties of the binders produced in this way are excellent. The properties are increased if the pozzolans are ground to the greatest fineness beforehand. The lignite filter ash can also be used in conjunction with previously known stimulators. The binders are suitable for processing in connection with aggregates such as sand and gravel, similar to cement.
Claims (1)
Family
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