RU2444489C1 - Silicate mixture - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: invention relates to the industry of construction materials and can be used to prepare mortars for internal and external plastering. The silicate mixture contains the following in wt %: quicklime 16.8-19.2, non-ground quartz sand 52.6-56.2, additive - Penetron Admix 0.1-0.4 and water 24.2-30.6.

EFFECT: improved plasticising properties, slower setting and fungus resistance.

2 tbl

Description

The invention relates to building materials and can be used for the preparation of mortars for the production of internal and external plastering works.

Known silicate mixture, including non-ground quartz sand, calcareous binder containing quicklime and an additive in the form of an aqueous solution of copper sulfate (RU 2305666, IPC С04В 2/06, publ. 10.09.2007).

The specified composition delays the hydration of lime, and in the preparation of a binder prevents the buildup of lime on the walls of the mill, but has a reduced biostability.

The technical result is to increase the plasticizing properties, slowing down the setting time and imparting mushroom resistance to the silicate mixture.

The essence of the invention lies in the fact that the silicate mixture, including quicklime, ground quartz sand, an additive and water, contains Penetron Admix as an additive, in the following ratio, wt.%: Quicklime 16.8-19.2, ground quartz sand 52.6-56.2, Penetron Admix 0.1-0.4 and water 24.2-30.6.

Penetron Admix - a dry mixture consists of special cement, quartz sand of a certain granulometry and active chemical additives (www.penetron.ru). It is a waterproofing additive in concrete (TU 5745-001-77921756-2006).

A method of preparing a silicate mixture is as follows. Produce a weight dosage of the components. First, ground quartz sand and quicklime are mixed to form a dry mixture. The resulting dry mixture is mixed with water, into which Penetron Admix is added and thoroughly mixed. The resulting mixture is placed in steel molds. Seal the mixture in vibration systems.

In the study of silicate mixtures, tests were carried out on samples of the following compositions (table 1)

Table 1 Composition number The composition of the binder Quicklime Quartz sand Penetron Admix Water 5% aqueous solution of copper sulfate one 16.8 52.6 0 30.6 2 17.4 53.5 0.1 29.0 3 18.0 54,4 0.2 27.4 four 18.6 55.3 0.3 25.8 5 19.2 56.2 0.4 24.2 6 7.9 80.5 - - 11.6

Tests for biostability are carried out according to GOST 9.049-91 by methods 1 and 3. The following types of mold fungi are used as test organisms: Aspergillius niger, A. flafus, A. terreus, Penicillium cuclopium, P. funiculosum, P. chrysogenum, Paecilomyces varioti, Chaetomium globosum, Trichoderma viride.

The results are shown in table.2.

table 2 Structure The degree of growth of mushrooms, points Characteristic according to GOST 9049-91 Method 1 Method 3 one 3 four Non-mushroom resistant 2 0 four Mushroom resistant 3 0 four Mushroom resistant four 0 four Mushroom resistant 5 0 four Mushroom resistant 6 3 four Non-mushroom resistant

From the results given in table 2, it follows that the compositions, depending on the ratios of the components have different indicators of biostability. Mushroom resistant are compositions 2-5. The optimal compositions are compositions 2-4, since with the introduction of the Penetron Admix additive more than 0.3%, cracks appear on the samples. The proposed compositions of the silicate mixture in comparison with the known solutions have high mushroom-resistant properties.

Claims (1)

Silicate mixture, including quicklime, ground quartz sand, water and an additive, characterized in that Penetron Admix, wt.%:
Quicklime 16.8-19.2 Ground Quartz Sand 52.6-56.2 Penetron Admix 0.1-0.4 Water 24.2-30.6