DE1192573B - Process for the production of a fiber-reinforced building material from cement, water, sand and foam-producing and foam-stabilizing substances - Google Patents

Description

Process for the production of a fiber-reinforced building material Cement, water, sand and foam-producing and foam-stabilizing substances Im U.S. Patent 1124,415 discloses a method for making a fiber-reinforced, cementitious Building material described, which is characterized in that aqueous, foam-producing and foam-stabilizing substances and preferably also containing an alginate Resin solution or emulsion, preferably based on adhesive resins, such as. B. Rosin, with cement, sand and water with the addition of mineral fibers, preferably Basalt fibers, vigorously mixed for a few minutes. The procedure is as follows: that the resin solution or emulsion is introduced into a high-speed mixer and vigorously stir until a foam forms. The fiber material is then added and finally adding cement and sand after a homogeneous mixture has been produced and, if necessary, add more water and continue stirring vigorously until it is reached continued homogeneous mixing.

During the further development work on this process, arose found that working in high-speed mixers compared to the usual Concrete mixers are much more expensive, is not necessary. More cattle was found that you can achieve very good results in a technically simple manner and with simple means comes when you use the aqueous, foam-producing and foam-stabilizing substances and also alginate-containing resin solution and emulsion in one high-speed Mixer in which only one agitator disc is attached to the bottom of the mixing container and that due to the relatively small volume of the resin solution or emulsion can be relatively small, stirred separately to form a foam, the resultant Foam intimately mixed with the fiber material to be added, then so obtained mixture in the necessary amount of a conventional finished concrete mixture in a conventional concrete mixer (free-fall or compulsory mixer) and add the mixture mixed at the usual speeds of this concrete mixer. In this way are special concrete mixers that are required for vigorous mixing of the mixture were no longer necessary.

If you want a fiber-reinforced heavy concrete using the same process make, so must in the concrete mixer in which the final mix is made the foam structure will be destroyed in the premix for a fine and uniform distribution of the fiber material was necessary. This is because of this achieves that a common "defoamer" c admixed.

Claims (2)

Claims: 1. A method for producing a fiber-reinforced Building materials made from cement, water, sand and foam-generating and foam-stabilizing Substances according to patent 1124 415, d a d u r e h characterized that the aqueous, foam-producing and foam-stabilizing substances and also containing alginates Resin solution or emulsion, preferably based on adhesive resins, such as z. B. rosin, mixed to a foam, the foam obtained with the mineral fiber, preferably basalt fiber, homogeneously mixed, the fiber-containing foam obtained in this way to a finished concrete mix of the usual composition and all the substances vigorously further mixed. 2. The method according to claim 1, characterized in that that the mixing water of the concrete mix of the usual composition is a usual defoamer is added. Publications considered: German Patent No. 421777.