DE195603C - - Google Patents

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Publication number
DE195603C
DE195603C DENDAT195603D DE195603DA DE195603C DE 195603 C DE195603 C DE 195603C DE NDAT195603 D DENDAT195603 D DE NDAT195603D DE 195603D A DE195603D A DE 195603DA DE 195603 C DE195603 C DE 195603C
Authority
DE
Germany
Prior art keywords
lime
sand
cement
quick lime
hydraulic
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.)
Active
Application number
DENDAT195603D
Other languages
German (de)
Publication of DE195603C publication Critical patent/DE195603C/de
Active legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B22/00Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
    • C04B22/06Oxides, Hydroxides
    • C04B22/062Oxides, Hydroxides of the alkali or alkaline-earth metals
    • C04B22/064Oxides, Hydroxides of the alkali or alkaline-earth metals of the alkaline-earth metals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

PATENTSCHRIFTPATENT LETTERING

- JVl 195603 -' KLASSE 80*. GRUPPE - JVl 195603 - ' CLASS 80 *. GROUP

JULIUS JUNGE in BERLIN.JULIUS JUNGE in BERLIN.

zu schützen.to protect.

Patentiert im Deutschen Reiche vom 1. Juni 1907 ab.Patented in the German Empire on June 1, 1907.

Die bisherigen Versuche, Mörtelmischungen von Sand und Zement oder hydraulischen Kalk trocken in den Handel zu bringen, sind daran gescheitert, daß die geringe Feuchtigkeif des Sandes ausreichte, das Abbinden des hydraulischen Bindemittels einzuleiten und zur Klumpenbildung Veranlassung zu geben. Der Erfinder verwendet, um diesen Übelstand zu vermeiden, statt des Sandes ein Gemisch von Sand und gebranntem Weißkalk. Letzterer hat bekanntlich die Eigenschaft, Feuchtigkeit schnell anzuziehen und festzuhalten. Ein Gemisch von Sand mit Kalk und Zement zeigt die gleiche Lagerhaftigkeit wie reiner Zement. Das gleiche trifft zu bei dem Ersatz von Zement durch hydraulischen Kalk oder beim Ersatz des Sandes durch Steingries oder Steinmehl. Enthält der hydraulische Kalk freien Ätzkalk, so kann der hydraulische Kalk unmittelbar mit Sand gemischt werden. Der freie Ätzkalk zieht das Wasser schleunigst an und entzieht dieses der Einwirkung auf den eigentlichen hydraulischen Kalk. Der Gehalt an Ätzkalk wird so gewählt, daß nicht nur das vorhandene Wasser gebunden ist, sondern daß noch ein Überschuß an Ätzkalk vorhanden ist, welcher verhindert, daß die Luftfeuchtigkeit nachteilig auf den Zement wirkt. In den Rahmen der Erfindung fällt auch der Zusatz von gemahlenem gebrannten Kalk zu Portlandzement und Romanzement, um diese vor Aufnahme von Feuchtigkeit während des Lagerns zu schützen. Es ist zwar der Ätzkalk schon verwendet worden, um Zwischenerzeugnisse zu trocknen, doch nie zum Abhalten der Feuchtigkeit von Enderzeugnissen.Previous attempts, mortar mixes of sand and cement or hydraulic Bringing dry lime on the market failed because of the low humidity of the sand was sufficient to initiate the setting of the hydraulic binder and to give rise to clumping. The inventor used to remedy this evil avoid using a mixture of sand and burnt white lime instead of sand. The latter is known to have the property of quickly attracting and retaining moisture. A mixture of sand with lime and cement shows the same shelf life as pure cement. The same is true of replacing cement with hydraulic lime or replacing sand with Stone gravel or stone flour. If the hydraulic lime contains free quick lime, the hydraulic lime can be mixed directly with sand. The free quick lime pulls that Water quickly picks up and removes it from acting on the actual hydraulic system Lime. The quick lime content is chosen so that not only the water present is bound, but that there is still an excess of quicklime, which prevents that the humidity has a detrimental effect on the cement. In the context of the The invention also includes the addition of ground quick lime to Portland cement and Roman cement to protect it from moisture absorption during storage. The quick lime has already been used to dry intermediate products, but never to keep the final product out of moisture.

Claims (2)

Patent-An Sprüche: 40Patent Proverbs: 40 1. Verfahren, Zement und hydraulischen Kalk sowie aus ihnen und Sand oder Steinmehl hergestellte trockne Mörtelgemische beim Lagern vor der Einwirkung von Feuchtigkeit zu schützen, dadurch gekennzeichnet, daß ihnen ein Zuschlag von Ätzkalk gegeben wird.1. Process, cement and hydraulic lime, as well as from them and sand or To protect dry mortar mixtures produced from stone meal from the effects of moisture during storage, characterized in that that they are given a surcharge of quick lime. 2. Ausführung des Verfahrens zur Haltbarmachung von Mörtelgemischen nach Anspruch 1, dadurch gekennzeichnet, daß der Ätzkalk zunächst einem der Bestandteile des Mörtelgemisches zugesetzt und dann erst das fertige Mörtelgemisch hergestellt wird.2. Execution of the process for the preservation of mortar mixtures according to Claim 1, characterized in that the quick lime is initially one of the constituents added to the mortar mixture and only then produced the finished mortar mixture will.
DENDAT195603D Active DE195603C (en)

Publications (1)

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Family

ID=458652

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Country Status (1)

Country Link
DE (1) DE195603C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1105331B (en) * 1952-07-21 1961-04-20 Robasit Bindemittel G M B H Process for the production of a storage-stable gypsum slag cement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1105331B (en) * 1952-07-21 1961-04-20 Robasit Bindemittel G M B H Process for the production of a storage-stable gypsum slag cement

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