AT129775B - Process for the production of road surfaces. - Google Patents
Process for the production of road surfaces.Info
- Publication number
- AT129775B AT129775B AT129775DA AT129775B AT 129775 B AT129775 B AT 129775B AT 129775D A AT129775D A AT 129775DA AT 129775 B AT129775 B AT 129775B
- Authority
- AT
- Austria
- Prior art keywords
- production
- water
- road surfaces
- hydraulic
- stone material
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1055—Coating or impregnating with inorganic materials
- C04B20/1077—Cements, e.g. waterglass
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/46—Water-loss or fluid-loss reducers, hygroscopic or hydrophilic agents, water retention agents
- C04B2103/465—Water-sorbing agents, hygroscopic or hydrophilic agents
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Road Paving Structures (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Herstellung von Strassendecken.
Man hat bereits in Vorschlag gebracht, der auf die Strasse aufzutragenden Masse hydraulische Zusätze, wie ungebrannten Kalk, Zemente aller Art, und Füllstoffe, wie z. B. Sägemehl, zuzusetzen. Die hydraulischen Zusätze binden einen Teil des in der Emulsion vorhandenen Wassers, so dass sieh eine Art Mörtel bildet, welcher mit der Zeit immer härter wird (vgl. D. R. P. Nr. 295064).
Wenn aber sämtliche Bestandteile, welche zur Herstellung des Strassenbelages verwendet werden, das ist z. B. Emulsion, Schotter, Steinstaub, Sägemehl, hydraulischer Kalk, miteinander vermischt werden, so entsteht ein homogener Brei, in dem alle diese Stoffe einzeln, also für sich mit Bitumen umhüllt werden, da sich die Emulsion in Wasser und Bitumen zerlegt.
Dieser Aufbereitung der Strassenbaustoffe haften jedoch verschiedene Mängel an, insbesondere ist es nicht möglich, das Wasser in vollkommener Weise zu entfernen und in der Strassendeeke"versteinerte Zellen"zu bilden, die der Strassendecke für alle Zeiten eine gewisse Elastizität verleihen und die Hohlräume derselben auf ein Minimum herabsetzen.
Erfindungsgemäss wird so vorgegangen, dass der Strassenbaumasse hygroskopisch Stoffe beigemengt werden, die von den hydraulischen Stoffen umhüllt erden. Auf diese Weise wird es ermöglicht, dass das Wasser schnell aufgesaugt wird und den hydraulischen Stoffen eine aufgesaugte Wasserreserve zur Verfügung steht. Als hygroskopischer Stoff kommt zerkleinerter Holzstoff in Betracht, welcher durch die durch Sieben auf eine noch kleinere Korngrösse als die des hygroskopischen Stoffes gebrachten hydraulischen Stoffe, d. i. Zement und Kalk, sozusagen eingepudert wird.
Die praktische Durchführung erfolgt derart, dass in den bekannten Mischmaschinen das erforderliche Steinmaterial mit der Asphaltemulsion gemischt und nach Erzielung einer entsprechenden Durchmischung der Masse ein zweites Gemisch zugesetzt wird, welches aus fein gemahlenem Holzstoff und noch viel feiner gemahlenem Zement und Kalk bereitet wurde.
Es werden also nach diesem Arbeitsverfahren die Holzteilchen vorher vollkommen mit Zement umhüllt und es liegt bereits eine lose Verbindung der hygroskopischen und hydraulischen Komponente vor, welche dann erst dem üblichen Emulsionsgemisch zugesetzt wird. Diese lose miteinander verbundenen Teilchen werden auch beim weiteren Mischvorgange nicht mehr getrennt.
Die Holzteilchen bilden den Träger der Feuchtigkeit, welche von den umgebenden Zementteilchen zum Abbinden verbraucht wird, so dass sieh beim Erhärten versteinerte Zellen"bilden. Es ist somit in zielbewusster Weise die Lagerung der einzelnen Teilchen derart geregelt, dass sich der Zement nicht an beliebigen Stellen befindet, sondern um die Holzteilchen gelagert ist, wodurch eben die versteinerten Zellen"entstehen.
Nach Vereinigung und Durchmischung der beiden Komponenten erfolgt die Auftragung auf die vorbereitete Strasse in üblicher Weise. Die Herstellung dieser Masse ist für die Arbeiter nicht gesundheits- schädlich und kann von 3 C aufwärts bei jeder Temperatur vorgenommen werden.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for the production of road surfaces.
A proposal has already been made to add hydraulic additives to the mass to be applied to the street, such as unburnt lime, all kinds of cements, and fillers such as. B. sawdust to add. The hydraulic additives bind part of the water present in the emulsion, so that it forms a kind of mortar, which becomes harder over time (cf. D. R. P. No. 295064).
But if all the components that are used to manufacture the road surface, this is z. B. emulsion, gravel, stone dust, sawdust, hydraulic lime, are mixed with each other, the result is a homogeneous paste in which all these substances are individually coated with bitumen, as the emulsion breaks down into water and bitumen.
However, this preparation of road building materials has various defects, in particular it is not possible to completely remove the water and to form "petrified cells" in the road surface, which give the road surface a certain elasticity for all time and the cavities of the same Lower the minimum.
According to the invention, the procedure is that hygroscopic substances are added to the road construction material which are encased by the hydraulic substances. This makes it possible for the water to be sucked up quickly and for the hydraulic substances to have an absorbed water reserve available. As a hygroscopic substance, comminuted wood pulp comes into consideration, which by the hydraulic substances brought by sieving to an even smaller grain size than that of the hygroscopic substance, i.e. i. Cement and lime, so to speak, is powdered.
The practical implementation takes place in such a way that the required stone material is mixed with the asphalt emulsion in the known mixing machines and, after the mixture has been appropriately mixed, a second mixture is added, which was prepared from finely ground wood pulp and even more finely ground cement and lime.
According to this working process, the wood particles are completely covered with cement beforehand and there is already a loose connection between the hygroscopic and hydraulic components, which is only then added to the usual emulsion mixture. These loosely interconnected particles are no longer separated during the further mixing process.
The wood particles form the carrier of the moisture, which is used by the surrounding cement particles to set, so that they form "petrified cells" when it hardens. The storage of the individual particles is thus controlled in a targeted manner so that the cement does not settle at random is located, but is stored around the wood particles, whereby the petrified cells "arise.
After the two components have been combined and mixed, they are applied to the prepared road in the usual way. The production of this mass is not harmful to the health of the workers and can be carried out from 3 C upwards at any temperature.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT129775T | 1931-01-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT129775B true AT129775B (en) | 1932-09-26 |
Family
ID=3636206
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT129775D AT129775B (en) | 1931-01-13 | 1931-01-13 | Process for the production of road surfaces. |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT129775B (en) |
-
1931
- 1931-01-13 AT AT129775D patent/AT129775B/en active
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