SU808446A1 - Method of producing concrete mix - Google Patents

Description

The invention relates to the technology of building production, in particular, to the technology of making concrete mixtures, and may find application in the preparation of concrete mixtures on heavy and light aggregates. There is a known method of preparing a concrete mix, which has surface-active substances (surfactants) in its composition, which consists in the fact that in preparing keramzit-perperlitobeton, in order to improve the crumbliness of perlite sand, first mix water with an air-entraining agent and cement, then the agitator is served by the filler (1. The closest to the proposed technical essence and the achieved result is a method including filling the concrete mixer with 2/3 of the required amount of water shut off and all Additives for water repellents, followed by the introduction of cement and sand. After mixing them for 1-2 minutes, large aggregate and the remaining amount of water are loaded 2. The disadvantage of the known method is an increased bulk weight. The purpose of the invention is to reduce the bulk density of concrete while maintaining strength. The goal is achieved by the fact that the method of preparing a concrete mixture, which includes mixing in a twitch, fine, coarse aggregate, mixing water and water-repellent additive, involves the initial mixing of water nor gidrofobiziruyuvdey additive with a large aapolnitel sequential administration, fine aggregate and the cementitious .. prepared in accordance with the methods of the concrete mixture has a desired rigidity (workability) and reduced in GCO od nose treb be w. OpHMetxj method implementation is shown in the table. As can be seen from the table, the proposed method of preparing a concrete mix allows to reduce the bulk weight of concrete.

1 (control) 230 466

320

533

2 (offering 1225

5.6

Claims (1)

1.Bronk jh. PerCite Institute conerete. - ACI Gournap, 1964, 10, V.25, p. 50. 2, Simonov M.Z. Basics of lightweight concrete technology. SI., M., 1973.