DE102011102454A1 - Inorganic binder and method for rapid solidification of building materials of all kinds by fumigation with carbon dioxide - Google Patents

Abstract

Binders, processes for the production and / or application of building materials containing these binders, such as panels, building blocks, prefabricated parts, insulation boards, etc., for example also for consolidating and covering floors in indoor and outdoor areas, using aqueous solutions of alkali silicates and fumigation with carbon dioxide containing gases, corresponding building materials, products made from them and other subject matter of the invention. The binders are characterized by a content of alkali silicate solution with a modulus of 1.5 to 2.0, if desired borate salt, aliphatic polyether and if desired microsilica and can be irreversibly solidified by carbon dioxide.

Description

The present invention relates to a binder, processes for the preparation and / or application of these binder-containing building materials, such as plates, bricks, prefabricated parts, insulating board, etc., for example, for solidification and occupancy of indoor and outdoor soils, using aqueous solutions of Alkalisilicates and fumigation with carbon dioxide-containing gases, corresponding building materials, products (especially building materials) thereof and other subjects of the invention.

Building materials (in general products for construction) such as concrete, gypsum, bricks, foam concrete blocks, insulation boards, precast concrete parts, screed floors, road coverings or chipboard are made of various mineral or organic starting materials, wherein the setting or solidification of the material mixtures by chemical reactions of the contained Ingredients over a certain time and / or by temperature change takes place.

Waterglass-containing, also solidifiable by carbon dioxide binding agent for the foundry, which are mixed for producing molds or cores, for example, with quartz sand, as in the DE 10 2007 045 649 A1 or the DE 28 56 267 A1 described, but which must be imperceptible demolding, that is, the effect of the binder must be repealed by simple means such as shaking, ultrasound, knock or the like and the material for the molds or cores in bulk form can be transferred. In addition, a water and frost resistance is not required in the foundry sector. Like in the DE 28 56 267 A1 described, with 3% binder amount after one hour, only a strength of 170 N / cm ^{2 is} achieved.

For structural applications, however, much higher strengths are desired or even necessary.

It is therefore an object to provide a binder mixture available, which unlike in the foundry sector by - not only superficial - curing with carbon dioxide to produce durable solid and stable products.

This object is achieved in the context of the present invention, wherein even further advantages mentioned below can be realized.

According to the present invention, fillers, such as sand, hollow glass spheres or wood chips or the like, are generally mixed in the building material materials according to the invention only with so much binder solution that the mixture, after being introduced into a mold or after compression by means of vibration or pressure, still sufficiently (interconnected, Gas exchange permitting) contains pores to pass carbon dioxide-containing gas or to allow the building materials penetrate.

The binder according to the invention contained in the material mixtures is of such chemical composition described in more detail below that it immediately sets or hardens with the carbon dioxide.

Such building materials have (in particular with complete completion of carbon dioxide) a processing time of many hours or days, without there being a solidification, that is, they are, for example, free-flowing and / or arbitrarily deformable during this time. If solidification (to be understood in the context of the present disclosure as virtually irreversible solidification) is desired, gasification (eg introduction by pressure or by "showering" of the material mixture) with carbon dioxide or (further) carbon dioxide-containing gas or gas mixture within hardening of a few seconds or minutes can be achieved. Since carbon dioxide is heavier than air, the carbon dioxide penetrates into the mixture when showering, for example, from the top with appropriate pore size of the material in very deep areas (for example, over 1 m) and produces a continuous curing.

Thus, for example, ideal deformability before solidification and, on the other hand, sufficient hardness and stability of corresponding building materials can be achieved after treatment with carbon dioxide. For example, a so prepared screed floor can be committed immediately after the scrubbing with carbon dioxide (you can even go directly behind a corresponding Kohlendioxidbeduschungsvorrichtung on the immediately immediately previously solidified part of the screed and thus walk off the entire surface to be cured flooring and apply carbon dioxide).

Durable molded parts (such as components) can be removed immediately from their form. Road surfaces can be used immediately. Articles or components of larger diameter can be fixed quickly in investment materials thus prepared. The serial production of components is easily possible.

The building materials thus produced are resistant to water, weather and frost and can also very high temperatures, for example, up to 1500 ° C temperature, without damage, are therefore also as heat-resistant and refractory Materials used. In addition, due to the porosity, they can be sound-insulating, with suitable surface sealing heat-insulating and / or used as building materials, for example for a friendly room climate.

The binder mixtures according to the invention achieve very high strengths which are sufficient for the construction sector. Where even higher strengths are required or the porosity is to be eliminated, it is possible to infiltrate the material solidified according to the method described above and below even partially every night partially or completely with suitable, sufficiently liquid during infiltration materials. By subsequent infiltration (impregnation), the pores contained can be filled so completely or in the surface area with a self-curing, liquid medium. This medium can for example consist of a cement or ceramic slip, or even a water glass-hardener mixture, or synthetic resins.

In particular, the present invention relates in particular to the following subject matters of the invention:
On the one hand, the present invention relates to a binder (binder) for building materials, which is characterized in that it is an alkali metal silicate (then the binder mixture or the resulting building material can also be mixed on site with the appropriate amount of water, such as necessary for the subsequent alkali metal silicate solution as difference to the stated amounts of solids) or an alkali metal silicate solution, preferably a potassium or in particular sodium silicate solution having a solids concentration of preferably 20 to 90 or 20 to 80, preferably 40-55 wt .-% based on the total weight of the silicate solution (in water , ie, waterglass), and having a weight ratio of alkali metal oxide (MeO) to SiO ₂ (eg, especially Na ₂ O: SiO ₂ ) of 1: 1.5 (modulus 1.5) to 1: 2.0 ( Module 2.0), in each case based on the finished binder mixture (= "in the binder mixture") and preferably a building material provided therewith, (eg be i corresponding addition of Me hydroxide in solid or further dissolved form, for. Sodium or potassium hydroxide), it is also possible to use a silicate salt or its solution with a higher modulus of up to 3.5 (for example, up to 3.3), based on the binder, for example in a proportion of 20 to 90% by weight. %, in particular 50 to 75 wt .-%; if desired (in particular for or for indoor use can be dispensed with) a borate salt, in particular an alkali metal borate, such as sodium or potassium borate, in particular borax (Na borate) in dissolved form, wherein the borate salt has a weight fraction of preferably 1 to 20 or 1 to 25% by weight, for example 4.5 to 12% by weight; (separately or directly in the mixture for the binder) an aliphatic polyether (essentially obligatory), in particular polyethylene glycol, in a proportion of 0.1 or 0.3 to 25 wt .-%, preferably from 0.2 to 10 wt. -%, in particular from 0.2 or 1 to 5 wt .-% and if desired (separately or directly in the mixture for the binder) microsilica (amorphous silica), in particular in a proportion of 10 to 50 wt .-%, preferably from 10 to 20 or to 25% by weight; includes; where all weight percentages are based on the total amount of binder (weight).

Advantageously, a carbonate, such as calcium carbonate, in a proportion of 1 to 40 wt .-%, z. B. 5 to 30 wt .-%, each based on the binder content added.

The corresponding components may also be present as a kit with one or more of the individual components in two or more separate containers, all components taken together giving the mentioned binder mixture. In particular, microsilica and polyethylene glycol, but also all other components, can each be present separately and admixed only during the production of a building material.

In a second embodiment of the invention, this relates to a building material, which includes the components mentioned for the binder and also one or more fillers with or without addition of further additives, wherein so much binder can be added that, in particular after compaction of the building material by means of shaking, Pressing (eg pounding or rolling) or injection (eg in molds) with compressed air, nor a flooding with carbon dioxide or carbon dioxide-containing gas is possible. In this case, the amount of binder to be used (resulting from said binder components) is highly dependent on the density and surface area of the material to be bonded and is in particular in the range from 0.5 to 70 wt .-%, preferably from 0.8 to 25 or 1 to 50 wt % in particular from 1 to 20 wt .-%, each based on the total weight of the building material and the building material may be present as a kit in which one or more components are present separately from each other and can be mixed at a desired time.

With sand, such as quartz sand with a density of 1.5, for example, a binder amount of 1 to 20 wt .-%, based on the total weight of a building material according to the invention, possible. Particularly preferred, for quartz sand, for natural sand, or more generally, is a binder amount of from 5 to 10% by weight, which may correspond to approximately a volume percent of from 7.5 to 15%.

For hollow bodies as fillers, such as hollow glass spheres, for example having a bulk density of 0.3 g / cm ³ , the preferred binder amounts may be about 25 to 50 wt .-%.

In yet another embodiment, the invention also relates to the use of building materials according to the invention for the production of solid products (in particular building materials) from the building materials, characterized in that one or more fillers and a binder according to the invention or its components, as defined above or below , optionally with the addition of other conventional additives, mixed together (preferably in the proportions given as preferred) and then charged with carbon dioxide or a carbon dioxide-containing gas, for. B. by gassing, for example, under the prevailing atmospheric pressure or pressure.

In addition, the method may then include infiltrating with suitable liquid enough materials to seal the existing interconnected pores on the surface of an available product or even at its depth.

Alternatively or additionally to the impregnation, the corresponding products can be provided with one or more coatings, such as, for example, with films, paints, paper (eg wallpapers), plastering or the like.

Also according to the invention is a process for producing a building material according to the invention, which consists in mixing a binder according to the invention or its components, a filler and, if desired, other customary additives (preferably in the ratios given as being preferred). The corresponding building material can then be stored for a long time in a processable or deformable state, for example 1 hour to 10 days, whereby the processability or deformability can be extended by almost any amount by protection against carbon dioxide (for example in carbon dioxide-tight containers or other packaging). The building material can then be brought into a desired shape by any means (eg, spreading on a substrate, placing in molds, compressing (eg, pounding or spreading, etc.).

• – lange Verarbeitungszeit;
• – schnelle Aushärtung, sofortige Belastbarkeit (z. B. Begehen oder Befahren);
• – billige, ungiftige Ausgangsmaterialien;
• – Einsparung von Produktionskosten;
• – geringe Bindermengen, hohe Festigkeiten;
• – geringer Wasseranteil, sofortige Belegbarkeit (z. B. Estrichböden);
• – Wetterfestigkeit, Frostfest, Feuerbeständigkeit;
• – keine Dehnfugen, nötig da keine Ausdehnung bzw. Schrumpfung;
• – schnelle Herstellbarkeit von Bauelementen, wie Bausteinen, oder Straßen vor Ort;
• – nachträgliche Infiltration und/oder Oberflächenversiegelung möglich;
• – die Produkte und Baustoffmaterialien „atmen”, sind luftdurchlässig;
• – kein stehendes Wasser im Außenbereich, da das Wasser durch die Poren abfließen kann
• – schnelle Fixierbarkeit von Gegenständen (z. B. Verankerungselemente, wie Schrauben) oder Bauteilen mit Einbettmassen;
• – feuerfeste Hohlraumabdichtung möglich;
• – bei der Herstellung von Holzspanplatten werden diese nicht brennbar und vor Insektenbefall geschützt durch den mineralischen Binder.

The new subject invention provides a number of advantages over known compositions and methods. These include, for example, one or more of the following benefits:

• - long processing time;
• - rapid curing, immediate loading capacity (eg walking or driving);
• - cheap, non-toxic starting materials;
• - saving on production costs;
• - low binder amounts, high strengths;
• - low water content, immediate assignability (eg screed floors);
• Weather resistance, frost resistance, fire resistance;
• - no expansion joints, needed because no expansion or shrinkage;
• - rapid manufacture of components, such as building blocks, or roads on site;
• - Subsequent infiltration and / or surface sealing possible;
• - the products and building materials "breathe", are permeable to air;
• - no stagnant water in the outdoor area, as the water can flow through the pores
• Rapid fixability of objects (eg anchoring elements, such as screws) or components with investment materials;
• - Fireproof cavity seal possible;
• - In the production of wood chip boards, these are not combustible and protected from insect attack by the mineral binder.

As an aside, it should be noted that the building materials according to the invention and their use are environmentally friendly by allowing the permanent fixing of carbon dioxide.

The following definitions of terms indicate preferred meanings, they may replace, individually or in succession, the corresponding more general terms individually, in several or completely in all embodiments of the invention, which results in preferred embodiments of the invention.

• – Formteile als Ersatz für Bausteine, Backsteine für Außen- und Innenbereich (insbesondere aufgrund der Porosität auch Leichtbauteile oder Ersatz für Blähtonbauelemente);
• – Ersatz für Fertigteile aus Beton, Ton, Steinzeug, Keramik oder dergleichen, wie Platten; Fliesen oder Ziegel;
• – Dämmplatten oder Trennwände;
• – Einbettmassen, Befestigungsmassen, Feuerfestprodukte;
• – Basis- oder insbesondere Ausbesserungsmassen für Böden, Wände, Straßen;
• – Ausfüllmaterial für Hohlräume;
• – Estrichböden;
• – Bodenverfestigung, Straßenbelag, Tunnel- und Bergbau (z. B. Gesteinsverfestigung);
• – Spanplatten; oder dergleichen mehr.

Under a building material (which means here not only in the strict sense for construction, but also, for example, for furniture or other objects usable materials, for example, for art objects, such as monuments, or the like) is a material of the invention to understand before it has been converted into the solidified form by treatment with carbon dioxide. Among the possible uses of the building materials according to the invention, without this being an exhaustive list, the following can be mentioned: (use or preferred products)

• - Molded parts as replacement for bricks, bricks for exterior and interior (in particular due to the porosity also lightweight components or replacement for expanded clay components);
• - Replacement of precast concrete, clay, stoneware, ceramics or the like, such as plates; Tiles or bricks;
• - insulation boards or partition walls;
• - investment materials, fixing compounds, refractory products;
• - basic or especially repairing compounds for floors, walls, roads;
• - filling material for cavities;
• - screed floors;
• - soil stabilization, road surface, tunneling and mining (eg rock consolidation);
• - Particle boards; or the like more.

"Include" means that one or more others may be present (in the sense of "include" or "contain") in addition to the features or constituents thereafter, while "consist of" would appear before a final enumeration.

"If desired" means that the corresponding components may or may not be present. In the case of borate salts and microsilica, one of these two or both components is preferably present in a binder according to the invention or a building material mixture according to the invention.

"Further" means that the features or components following that word are less preferred than those referred to in the same list and thus may be omitted from the list in preferred embodiments of the subject invention.

The average molecular weight of the aliphatic polyethers, in particular polyalkylene glycols), such as polypropylene glycol or in particular polyethylene glycol, is preferably in the range from 150 to 8000, in particular from 200 to 600, for example from 200 to 400. The average molecular weight (average molecular weight) can be defined as the Ratio of total mass of aliphatic polyether divided by number of polymer molecules.

As microsilica in the context of the present disclosure (in particular synthetic or further natural) amorphous silicas (such as obtained by pyrolysis or as fly ash or precipitated silica, further also natural diatomaceous earth), which are present especially in fine particulate form.

The fillers for building materials according to the invention include, without this listing being exhaustive, one or more selected from the group consisting of sand, e.g. B. natural sand, quartz, z. As quartz or quartz sand, gravel, ground rock, corundum, ceramics, talc, silicates, clay, titanium dioxide, chalk, barite, feldspar, basalt, aluminum hydroxide, granite, sandstone, glass, polymeric fillers (such as polypropylene (PP) or polyethylene (PE)), slaked lime, hydraulically settable fillers, such as gypsum, quicklime or cement (for example Tonerd- or Portland cement), metals, such as aluminum, graphite or carbon black, wood, mineral, vegetable or organic fibers, eg. As cellulose fibers, glass fibers, carbon fibers or synthetic fibers, compressible filler or materials, eg. As gas-filled particles, such as gas-filled plastic particles (z. B. Expancel ^® from AkzoNobel), hollow glass beads, foam particles, such as (at least partially) expanded polystyrene, other enclosed hollow body or cavities or the like comprising hollow bodies such as ceramic structures, or the like, and refractory materials such as chromite sand, alumina, zircon sand, aluminum silicate, chamotte, silicon carbide, mullite, fosterite or synthetic ceramic sand, or mixtures of two or more, in particular, of said fillers. The fillers may be in any form, for example as a powder or flour, or as a shaped body, for. In cylindrical, ring, spherical, platelet, stick, saddle or crystal form, or further in fibrous form.

The grain size of the fillers (and preferably also of all other materials within a building material material according to the invention) is intended to allow carbon dioxide to be blown through by corresponding pores and is preferably on average in the range of 5 mm or less (in the range of average grain size = preferably 0.1-0 , 3 mm), for example up to 2 mm (eg sand) or 2 to 4 mm (eg gravel); wherein also particles with larger diameters are possible (or with longer lengths, in particular for fibers whose thickness may then be preferably 5 mm or less), including, for example, wholly or partially enclosed by a surrounding matrix with aforementioned fillers of 5 mm or less particle diameter Parts or elements such as stones, decorative particles such as enameled potsherds, fasteners (such as hooks, bolts or the like), with sizes above 5 mm along the longest extension axis.

The proportion of filler (s), such as sand, in particular a natural sand, for example, in a possible preferred building material according to the invention at 10 to 99 wt .-%, with a range of 10 to 65 wt .-% for materials of low density (z. <1 g / cm ³ ) or from 65 to 98 wt% for higher density materials (eg, above 1 g / cm ³ ) is a possible particularly preferred variant.

Other additives may, for example, one or more selected from dispersing or wetting agents except aliphatic polyethers, eg. Anionic detergents (e.g., sodium lauryl sulfate), cationic detergents, nonionic detergents and / or amphoteric detergents, anti-settling agents (stabilizers), e.g. Alkylcellulose-based, such as methylcellulose or bentonite-based, air-entraining agents which form a stable microfoam, for example resin soaps, resines or fatty alcohol sulfates, or alkylarylsulfonates, fibers, coloring additives, such as dyes or, in particular, pigments, organic binders, such as dispersion polymers, or more.

In the context of the present disclosure, "pores" are to be understood as meaning interconnected pores or pore channels (in such a way that gas exchange is possible among one another). These allow penetration to a desired depth with carbon dioxide.

Where "carbon dioxide" is mentioned, it always includes (also where not specifically mentioned) carbon dioxide-containing gases or gas mixtures, such as air or gas / gas mixtures containing 1 volume percent or more carbon dioxide, for example from 5 to 99 volume percent ,

Suitable sufficiently liquid materials for infiltration / impregnation may include, for example, synthetic resins composed of epoxy resins, polyesters, polyurethanes, (meth) acrylic polyurethanes, acrylic polyurethanes, polyesters (eg component and component comprising hardener component comprising separate monomer or prepolymer component). in particular vinyl esters), other acrylates, polyureas, other synthetic resins containing olefin and vinyl groups, such as styrene, vinyltoluene or the like, polyurethane / polyurea mixtures, (meth) acrylate resins, polyesteramides, or their components (with or preferably without added solvents) the application temperature (eg between -10 and 200 ° C or between 0 and 100 ° C, eg at 20 to 25 ° C) in liquid form, for example as "melting" or with suitable organic solvents, or like that, to be understood.

In one kit, the two or more components in different containers or packages may be separated from each other so that they do not come into contact with each other before it is desired. Suitable containers or packaging are, for example, buckets, foil bags, film bags, bottles, cartridges, tubes, containers or the like.

The invention also relates to the invention defined in the examples as well as the claims, which are incorporated herein by reference in the description.

The following examples serve to illustrate the invention without limiting its scope.

Note: When applying carbon dioxide, always ensure adequate ventilation to avoid danger of suffocation. With this proviso, carbon dioxide is non-toxic and unproblematic.

Example 1: Production of a building block

• 20 kg quartz sand Haldener H32 (average grain size 0.2 mm)
• 1.5 Kg Na silicate solution (module 1.9) Betol 50 T from Wöllner (module 2.5)
• 0.1 kg borax
• 0.05 Kg polyethylene glycol PEG 200
• 0.4 Kg microsilica RW filler (RW silicium GmbH, Pocking, Germany) (amorphous silica)

The ingredients are mixed in a mixer, placed in a rectangular plastic container and compacted by vibration. The mold is now flooded with carbon dioxide gas for about 20 seconds. Thereafter, the resulting component can be removed immediately from the mold.

Example 2: Production of screed floor

The above mixture is prepared several times in a mixer and spread on the floor of a room so that a 10 cm thick layer is formed, which is evenly compacted with a rotating plate and smoothed. After that, carbon dioxide gas from a gas bottle with a hose with a shower-shaped end is directed to the bottom. The carbon dioxide treated soil can be used immediately to reach all corners of the room during treatment with carbon dioxide.

Example 3: Production of a road surface

The mixture described above is mixed to 50 wt .-% with silica ballast and placed on the previously leveled surfaces, so that after compression by means of a roller, a coating of an average thickness of 20 cm. Then the surface is showered by means of carbon dioxide gas, which leads to an immediate hardening of the coating. The pad can be used immediately and be soaked or infiltrated in areas of greater stress with a cement / water mixture, or a waterglass / hardener mixture, or bitumen, for example.

Example 4: Production of an insulating board

A mixture of glass fibers and glass bubbles is by means of a suitable blower swirled and wetted by spraying the binder material with this (impregnated) before the mixture is blown into the desired shape. The sprayed binder consists of the following components:
85.0% water glass (modulus 2.5, 48% solids concentration)
10.0% sodium hydroxide solution (45% strength)
5.0% polyethylene glycol 300

After the injected mixture has sufficiently compacted in the mold, carbon dioxide gas is passed through the mixture, resulting in immediate solidification, after which the insulation material can be immediately removed from the mold.

The amount of binder sprayed amounts to about 10 vol .-% of the finished insulating material.

Example 5: Production of a soil or road consolidation

Existing flooring or road surface is raised to a depth of 40 cm with a suitable device and mixed either simultaneously or subsequently with the binder components homogeneous. Subsequently, the so mixed up and mixed with binder soil is compacted with a roller or by vibration and then "showered" with carbon dioxide gas, whereby an immediate hardening of the soil is achieved. In dense soil or building material, to bring about a deeper penetration of the carbon dioxide gas, the gas can also be brought into deeper layers by means of thin nozzles. Here, many juxtaposed, spaced at intervals of, for example, 30 cm, about 20-30 cm long and 5 mm thick nozzles can be briefly inserted into the previously compacted soil to distribute the carbon dioxide gas faster in deeper layers.

The binder mixture preferably consists of the following constituents:
60% water glass (module 2.5, 48%)
4% polyethylene glycol 200
8% sodium hydroxide solution (45%)
8% borax (Na borate decahydrate)
10% amorphous silica
10% calcium carbonate (finely ground, precipitated)

All components were mixed to a homogeneous dispersion.

Example 6: Production of a particle board

Wood shavings as they are usually used for the production of wood chipboard are used with a powder mixture consisting of:
30% water glass powder (Lithopix S2 from Tschimmer & Schwarz)
4% KOH conc. In powder form
8% borax powder
then, depending on the moisture content of the wood chips, water and polyethylene glycol 200 are added to the mixture. The mixture is then compacted under high pressure in a platen press and pressurized with carbon dioxide gas immediately, resulting in immediate curing of the material mixture so that it can be immediately removed from the press.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102007045649 A1 [0003]
• DE 2856267 A1 [0003, 0003]

Claims (14)

Binders for building materials, which is characterized in that it is an alkali silicate or an alkali silicate solution with a modulus of 1.5 to 2.0 in the binder mixture; if desired, a borate salt in a weight proportion of 1 to 25 wt .-%; an aliphatic polyether in a proportion of 0.1 or 0.3 to 20% by weight; and, if desired, microsilica in an amount of from 10 to 50% by weight, and if desired, including a metal carbonate; wherein the wt .-% - information is based on the total weight of the binder. A binder according to claim 1, wherein the alkali silicate is sodium silicate or the alkali silicate solution is one of sodium silicate; the borate salt borax, and the aliphatic polyether polyethylene glycol having an average molecular weight of 150 to 3000. Binder according to one of claims 1 or 2, wherein the proportion of alkali silicate at 20 to 99.9 wt .-% or alkali metal silicate solution at 20 to 80 wt .-%, preferably at 50 to 75 wt .-%; the proportion of borate salt 1 to 20, preferably 4.5 to 12 wt .-%; the proportion of aliphatic polyether at 0.1 to 20, preferably at 0.2 to 10 wt .-%; and the proportion of microsilica is 10 to 50, preferably 10 to 25 wt%; in each case based on the total weight of the binder. A kit comprising one or more of the individual components of a binder as claimed in any one of claims 1 to 3 in two or more separate containers, all components taken together giving said binder mixture. Building material comprising a binder according to any one of claims 1 to 4 or all its components and one or more fillers, and optionally further additives, wherein the components of the binder taken together or the binder 0.5 to 70 wt .-%, preferably 0.8 make up to 25 wt .-%, in particular 1 to 20 wt .-% of the building material. Building material according to claim 5, characterized in that it has pores to pass carbon dioxide or carbon dioxide-containing gas or gas mixture or to allow the building material to penetrate. A kit for a building material according to claim 5 or claim 6, wherein one or more components are separate from each other for mixing at a desired time. Use of a building material according to claim 5 or claim 6 or a kit according to claim 7 for the production of solid products, in particular building materials, characterized in that one or more fillers and a binder according to any one of claims 1 to 4, or its components, optionally with addition other additives, mixed together and then fumigated with carbon dioxide or a carbon dioxide-containing gas or gas mixture. Use according to claim 8, characterized in that in addition a subsequent infiltration or impregnation with suitable sufficiently liquid materials is carried out in order to seal the existing pores on the surface of an available product or in its depth. Use according to claim 8 or claim 9, characterized in that the corresponding products are further provided with one or more coatings. Use according to one of claims 8 to 10 for the production of a product selected from - moldings as replacement for building bricks, bricks for exterior and interior use; - Replacement of precast concrete, clay, stoneware, ceramics or the like, such as plates; Tiles or bricks; - insulation boards or partition walls; - investment materials, fixing compounds, refractory products; - basic or especially repairing compounds for floors, walls, roads; - filling material for cavities; - screed floors; - soil stabilization, road surface, tunneling and mining (eg rock consolidation); and - Chipboard. Product obtainable by use according to any one of claims 8 to 11. Product according to claim 12, selected from - moldings as replacement for building bricks, bricks for exterior and interior use; - Replacement of precast concrete, clay, stoneware, ceramics or the like, such as plates; Tiles or bricks; - insulation boards or partition walls; - investment materials, fixing compounds, refractory products; - basic or especially repairing compounds for floors, walls, roads; - filling material for cavities; - screed floors; - soil stabilization, road surface, tunneling and mining (eg rock consolidation); and - chipboard, A method for producing a building material according to any one of claims 5 or 6 or A kit according to claim 7, characterized in that one mixes a binder according to one of claims 1 to 4 or its components with a filler with or without one or more further customary additives or in the case of a kit two or more components or component mixtures in formulated form kept.