DE591469C - Method of sealing cement mortar - Google Patents
Method of sealing cement mortarInfo
- Publication number
- DE591469C DE591469C DED51669D DED0051669D DE591469C DE 591469 C DE591469 C DE 591469C DE D51669 D DED51669 D DE D51669D DE D0051669 D DED0051669 D DE D0051669D DE 591469 C DE591469 C DE 591469C
- Authority
- DE
- Germany
- Prior art keywords
- cement mortar
- mortar
- cement
- sealing cement
- water
- 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
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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/0093—Aluminates
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Sealing Material Composition (AREA)
- Working Measures On Existing Buildindgs (AREA)
Description
Verfahren zum Dichtmachen von Zementmörtel Zur Herstellung von wasserdichtem Zement werden in der Regel Verbindungen und Gemische verwendet, welche zum größten Teil aus fett- oder bitumenhaltigen Produkten bestehen. Obwohl die wasserabstoßende Wirkung dieser Stoffe ohne weiteres zugestanden wird. ergeben sich doch oft-wesentliche Nachteile bei ihrer Anwendung. Es hat sich nämlich herausgestellt, daß fast alle Körper, welche organische Fette als solche oder auch als Metallsrlze enthalten, den Zement schädigen, wahrscheinlich weil sie ihm nicht wesensverwandt sind.Method of waterproofing cement mortar For making waterproof Cement compounds and mixtures are usually used, whichever is greatest Partly consist of products containing fat or bitumen. Although the water repellent Effect of these substances is readily admitted. there are often essentials Disadvantages of their use. It turned out that almost all of them Bodies which contain organic fats as such or also as metal salts, damage the cement, probably because they are not related to it.
Es wurde nun gefunden, daß verdünnte wässerige Lösungen der Alkalialuminathydrate außerordentlich wirkungsvolle Dichtungsmittel für Zement sind. Stellt man z. B. aus z Gewichtsteil Zement und 4 Gewichtsteilen körnigem Mauersand nach dem Anmachen mit Wasser Mörtelplatten von "2 cm Stärke her,, so zeigen diese Platten selbst nach längerem Lagern bei der Prüfung auf Wasserdurchlässigkeit ein lebhaftes Durchsickern des Wassers bereits bei niedrigem Druck. Benutzt man aber an Stelle des Anwachewassers für die Herstellung solcher Mörtelplatten wässerige Lösungen von Alkalialuminathydraten, beispielsweise von dem am billigsten und leichtesten herstellbaren Natriumaluminathydrat, derart, daß auf etwa r oo kg Portlandzement 1,5 kg der gelösten Substanz kommen, so erweisen sich die unter sonst ganz den gleichen Bedingungen hergestellten Mörtelplatten selbst bei Wasserdruck von 4 Atmosphären als vollkommen wasserdicht.It has now been found that dilute aqueous solutions of the alkali aluminate hydrates are extremely effective sealants for cement. If you put z. B. from z part by weight of cement and 4 parts by weight of granular wall sand after mixing with water, mortar slabs "2 cm thick" are shown by these slabs themselves prolonged storage a brisk leakage when testing for water permeability of the water even at low pressure. But if you use it instead of the waxing water for the production of such mortar boards, aqueous solutions of alkali aluminate hydrates, for example from the cheapest and easiest to produce sodium aluminate hydrate, in such a way that for about r oo kg of Portland cement there are 1.5 kg of the dissolved substance, this is how the mortar plates produced under otherwise exactly the same conditions turn out to be as completely waterproof even at water pressure of 4 atmospheres.
Eine Erklärung für diese überraschende -Erscheinung läßt sich nicht ohne weiteres geben. Es 'kann angenommen werden, daß ein Teil der dichtenden Wirkung auf das Ausfallen von feinst verteilten Tonerdehydrat in den Poren des Mörtels während der Abbindung zurückzuführen ist.An explanation for this surprising phenomenon cannot be found give without further ado. It can be assumed that part of the sealing effect on the precipitation of finely distributed alumina hydrate in the pores of the mortar during due to the setting.
Der Wert obiger Erfindung besteht auch darin, daß diese Ausfällung in den. Poren aus einem einheitlich anorganischen und dem Zement wesensverwandten Material besteht, so daß eine .spätere Veränderung desselben wie bei ölen, Fetten und Bitumen, welche der Oxydation eventuell unterliegen, nicht zu befürchten ist.The value of the above invention is also that this precipitate in the. Pores made of a uniformly inorganic material that is essentially related to cement Material exists, so that a later change of the same as with oils and fats and bitumen, which may be subject to oxidation, is not to be feared.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED51669D DE591469C (en) | 1926-11-14 | 1926-11-14 | Method of sealing cement mortar |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED51669D DE591469C (en) | 1926-11-14 | 1926-11-14 | Method of sealing cement mortar |
Publications (1)
Publication Number | Publication Date |
---|---|
DE591469C true DE591469C (en) | 1934-01-22 |
Family
ID=7053555
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DED51669D Expired DE591469C (en) | 1926-11-14 | 1926-11-14 | Method of sealing cement mortar |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE591469C (en) |
-
1926
- 1926-11-14 DE DED51669D patent/DE591469C/en not_active Expired
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