DE1644775B

DE1644775B - Process for the manufacture of durable, selfamger, crushed asphaltites for the preparation of bituminous masses for building purposes

Info

Publication number: DE1644775B
Authority: DE
Inventors: Hans 8000 München C22b9 12 Mosslang
Original assignee: Deutsche Asphalt und Tiefbau GmbH, 6000 Frankfurt

Description

in welchem sich eine Aufschlämmung aus Kalkmilch mit einem Zusatz an S °/o Schwarziauge befindet. Die Menge dieses Gemisches beträgt 2501.in which there is a slurry of milk of lime with an addition of 50% black liquor. the The amount of this mixture is 2501.

Nach etwa 20minütigem Umrühren des mit RUhrflUgeln ausgestatteten Mischers wird das durchmischte Material auf eine Siebplatte aufgetragen, um überschüssige Flüssigkeit ablaufen zu lassen, Das noch feuchte und allseitig benetzte, aber nicht mehr tropfende Material wird mit ehern Flüssigkeitsgehalt von 17 Volumprozent in luft- und wasserdichte Säcke oder in Mengen von je 5 kg in Beuteln aus Folien von Zellulosederlvaten oder Kunststoß wie Polyäthylen abgefüllt und die Behältnisse oder Beutel s dicht geschlossen, Die Fackungen können auch bei höchsten Sommertemperaturen im Freien gelagert werden, der Inhalt erweist sich dabei auch nach Lagerung an der Baustelle über einige Wochen als noch vollkommen rieselfähig.After stirring the with stirrer blades for about 20 minutes Equipped mixer, the mixed material is applied to a sieve plate in order to Allow excess liquid to run off, which is still moist and wetted on all sides, but no longer Dripping material is air- and water-tight with a liquid content of 17 percent by volume Sacks or in quantities of 5 kg each in bags made of cellulose leather film or synthetic material such as Polyethylene is filled and the containers or bags are tightly closed, the packings can also be used be stored outdoors at the highest summer temperatures, the content is also proven Storage at the construction site for a few weeks as still completely free-flowing.

Claims

ι to prepare 2 asphaltites in such a way that they remain free-flowing and can be easily dosed even when the storage temperatures are to be taken into account.

1. Method of making durable rlesel- The method of the invention for making capable, crushed asphaltite for the preparation 5 durable, free-flowing, crushed asphaltite for the processing of bituminous masses for building purposes, since preparation of bituminous masses for building purposes is characterized by being crushed, characterized in that crushed, comminuted, granulated or ground asphalt granulated or ground asphalt intimately with water intimately wetted with water or an aqueous liquid or an aqueous liquid and that wetted and the drip-free items moist in liquid ίο drip-free items moist in liquid-tight containers packed tightly sealed containers. packed up.

2. The method according to claim I, characterized GE experiments have shown that to avoid indicates that as a liquid with network a caking of the crushed asphalt mixed water is used. wetting with water alone can be sufficient, provided that

3. The method according to claim 1 and / or 2, 15 a perfect closure of the so wetted characterized in that aqueous dis- materials in liquid-tight containers, such as artificial dispersions or emulsions with inorganic cloth bags. Have such packaged masses Additives containing substances are used. a good shelf life, which is sufficient for many cases.

4. The method according to claim 3, characterized in that an even greater shelf life is achieved indicates that a black liquor is produced, but if one uses a liquid with a net holder Emulsion or dispersion used. mixed water is used.

Such wetting agents can include aryl alkyl sulfonates, weak soap solutions or silicone oils or the like. being.

25 Dispersions or emulsions, the inorganic substances, are also advantageous as aqueous liquids contain, and advantageously those inorganic

According to DIN, asphalts for road construction purposes are substances that are deposited on the asphalt particles and at the same time as suitable additives to the asphalts that are technically manufactured and used as sand asphalts.
Cast asphalt or the like. Use. Your These inorganic substances should be as finely as possible - production often takes place with the addition of natural parts. Suitable coating materials of this type obtained asphalt materials which already have more, are, inter alia, calcium hydroxide, magnesium or less large proportions of mineral substances hydroxide, magnesium oxide, finely ground diato. These "asphaltites" have alternating sea earth or mixtures of finely powdered mine fractions of organic components and minerals or rocks such as trass, as they see substances as aggregates are customary which complicates their processing.

Property, in their delivered condition when using such slurries of

relatively small increases in temperature for the coating material has the advantage that this

Tend to stick together to melt. the packaged masses can be stored practically indefinitely

Asphaltite material as it is delivered in barrels.

This often requires breaking up the masses prepared in this way, for example, relatively hard, compact mass of musch- a hot mastic asphalt in broken up to half-mussel-like fragments, so that it can be added to the 45 corresponding packaging units with the amounts that can be dosed in a particularly simple manner at the 45 corresponding packaging units will. The substances are miscible and evaporate into a melt of possible wetting liquid as soon as possible, and the homogeneous composition can be converted into inorganic wetting materials at the same time as fillers. This work is difficult and time consuming, stoff in the mastic asphalt to be processed. The desired dosage is also cumbersome and 50 persions or emulsions expediently requires good experience, so that for larger construction or wetting agents of the above-mentioned type and plan an always uniform mixture, if necessary, the mixing process continues. Excess quantities and residues, which are formed by slightly increased temperatures because they remain at the site of the comminution, improve the adhesion of the mineral particles, which are suspended in the slurry, especially at higher summer temperatures,
ßende lumps and impurities that are particularly good storage stability achieved removal or for the purpose of recovery, if you use black liquor as a wetting agent, a considerable amount of work. Waste product of sulphite pulp production, we have already tried to det and counter these disadvantages with additives such as calcium hydroxide by not delivering the asphaltites to an emulsion or disin barrels, but in powder form or in persion processed,
granular shape. Such a material must, however

to be processed as soon as it is in this state, exemplary embodiment
especially at higher temperatures, tends to

to melt together and after already a ratio of 65 100 kg Trinidad asphalt will be at around 5 to

moderately short time hard lumps and at working 10 ° C to a grain size of about 3 to 5 mm

to form stubborn impurities. Broken diameter. That from the fine crusher

The invention is based on the object, leaking material is fed into a mixer,