SU867896A1 - Concrete mix - Google Patents

Description

(54) CONCRETE MIXTURE

The invention relates to construction materials, in particular, to concrete mixes containing additives, and can be used for the production of concrete and reinforced concrete products during steaming. A concrete mixture is known that includes a mineral.-Ingress, a filler, water, and a complex additive consisting of a mixture of N aOH and SaZod, respectively, in an amount of 0.5-1.5% and 1-10% by weight of cement 1. Closest to The proposed technical essence and the achieved result is a concrete mix, cement, sand, crushed stone, water and an additive - a curing intensifier containing dust from a clinker baking furnace and NaOH, respectively, in quantities of 1.9-15% and 0.1-1.5% of weight cement; that T2: 1. A disadvantage of the known concrete mix is that the strength of the concrete after steaming is not high enough. The purpose of the invention is to increase the strength of the concrete after steaming. This goal is achieved. We can say that a concrete mixture, including cement, sand, crushed stone, water and a curing intensifier, contains as a hardening intensifier a product of hydrogen fluoride in the following ratio of components, wt.%: Cement 1 O-23,7 Sand 25-33, O Crushed stone4 5-4 9.0 Product 1, production of hydrogen fluoride Oh, 3 -2.0 WaterOther The chemical composition of the product is as follows, wt%:. 2.6 g-3, 35-36.5; AiiO-b 0.5-0.7; Fe / p4 0,2-0,95; CaF (j 2,2-5, the rest. Product smtpc to the specific surface 15OO-2OOO and in the required amount add sweat to the previously mixed mixture of cement, sand, rubble and wooy.

Ogrevanov1 1e samples are subjected to Bibrufovaniyu for 3 min, and then steamed in the mode of 3 + 3 + 5 + 2 at

80-85 ° C.

Examples of specific performance, see table 1.

The composition of the concrete mix, wt.%

Comparative physico-mechanical properties of samples prepared from the proposed concrete mix and from the known are given in table. 2

The strength of concrete with added waste is increased by 2 -28 & compared to the prototype.

Table 1

Claims (1)

Claim A concrete mixture including cement, sand, gravel, water and a hardening enhancer, characterized in that, in order to increase the strength of concrete after steaming, it contains a product of hydrogen fluoride production in the following ratio of components, wt.%: Cement 10-23.7 Sand 25-33.0 Crushed stone 45-49.0 Product produced by 'hydrogen fluoride 0.3-2.0 Water Else