Abstract: A method for the production of an additive for building materials, wherein a hidrophobization agent is mixed with a solvent and the resulting emulsion is applied to quicklime, and then the material obtained is hydrated by adding water, wherein the hidrophobization agent is an oil having a dry matter content of 3 to 50% by weight, the quicklime in a quantity of 60 to 96% by weight is soaked with a quantity of 4 to 40% by weight of the mixture of the oil and the solvent, and after dying of the hydrated material a foaming agent is admixed thereto in a quantity of 0.25 to 0.6 part by weight of the foaming agent, preferably sodium bicarbonate, to one part by weight of the hydrated material. By using this additive, a binder comprising an additive is produced so that a hydraulic binding component and/or an isocyanate based binding component are/is added to the additive in a quantity of 4.8 to 14.8 parts by weight of the binding component to one part by weight of the additive.

Abstract: A cement composition for use in acidic environment containing liquid alkali silicate, vitreous silicate setting agent, lime containing material and inert filler and building materials made therefrom as well as the method of making such building materials. The liquid alkali silicate may include sodium silicate or potassium silicate. The vitreous silicate setting agent may include soda-lime glass powder or coal fly ash. The lime containing material refers to the materials containing more than 20% lime and may include quicklime, hydrated lime, Portland cement, blast furnace slag or steel slag. The inert fillers include ground quartz, ground ceramic, and/or clay.

Abstract: The invention relates to the production and use of a water-repellent and impregnating product for surfaces of building materials. In order to be able to waterproof and impregnate building material surfaces in a relatively simple, economical and yet very reliable and durable manner, a coating product is proposed which is produced from two aqueous solutions and forms an aqueous solution product which contains silicon, calcium and sodium ions, wherein the capacity for dissolving the calcium oxide is increased by a dissolving agent added to the water and the finished product, after application and drying on the building material surface, forms a glass-like surface film.

Abstract: A surface of solid building material may be waterproofed and impregnated against chemical and biological corrosion by forming first and second aqueous solutions one of which contains calcium ions and the other of which contains sodium and silica ions. The two solutions may be mixed and applied simultaneously to the surface or the two solutions may be applied to the surface sequentially, the solution containing the sodium and silica ions being applied first. In either case there is formed on the building material surface a hard, glass-like transparent coating of sodium calcium silicate.

Abstract: A patching compound for patching holes in drywall, cement, and the like, includes well known drywall mud material, water, and various other ingredients such as calcium carbonate, gypsum, perlite, mica, talc, clay, starch, cement, and a preservative, such as sorbic acid or a product sold as boroguard ZB. The various ingredients are mixed with water to provide a relatively soft and pliable filler compound. Silicone caulking may also be used for moisture retention, if desired. The compound is place in a dispenser for dispensing, and the dispenser may either be a relatively small dispenser for household use or a relatively large dispenser for commercial and industrial use. For the household use, the dispenser preferably includes a housing having an asymmetrical configuration in which is disposed a piston. The piston moves within the cylinder and is prevented from rotating by the asymmetrical configuration of the cylinder. Rotation of a threaded rod causes the piston to move the compound, as desired.

Abstract: A sprayable composition for use as a sealant or coating for various surfaces, especially concrete block walls, is disclosed which includes water soluble silicate, water, cellulose fibers, clay and limestone. The cellulose fibers enable the sealant to have a sprayable consistency and good thixotropy when the sealant composition is sprayed on a vertical surface or a ceiling. A method of using the sealant composition also is disclosed.

Abstract: A composition for use as a sealant or coating for concrete block walls is disclosed which includes water soluble silicate, water, fibers, clay and limestone, wherein the limestone accelerates the drying of the composition. The fibers used may be non-allergenic fibers such as polyethylene or polypropylene fibers. A method of using the sealant composition also is disclosed.