SU816994A1 - Building mortar - Google Patents

Description

(54) BUILDING SOLUTION

The invention relates to mortar compositions using Nos. 1x for materials with thermally insulating properties. Izves.tna. the building mixture, vkasho-quenching, aggregate, water, and additive marked siloxane resins in the amount of 1-20 wt.% from the gripping one. Closest to the proposed technical essence of the achieved result is a concrete mixture comprising a mineral bushing, the filler, water and silicone 9 additive is a5g1kyl (aryl) hydridsilsesquioane in an amount of 0.2-1 wt.% of cement 2}. A disadvantage of the known concrete mix is the low electrical insulation properties. The purpose of the invention is to increase the electrical insulation properties of the material obtained. The goal is achieved by the fact that the construction solution, including Portland cement, sand, water and silicone additive, contains as a last a polyorganoalkoxysiloxane of the general formula where R is an aliphatic or aromatic radical; R - aliphatic radical, p - 2-20 in the following ratio of components, wt.%: Portland cement 10.1-40.0 Sand 40-84.1 Organic crellite. . 0.5-2.0 Water. The remaining organosilicon compounds of the type of polyorganoalkoxysiloxanes do not contain hydrogen atoms and ONa groups bonded to the silicon atom and, as a result, are free of the drawbacks of, for example, alkyl (aryl) hydridsilsesquioxanes. As a consequence, compounds of the type of polyorganoalkoxysiloxanes can be introduced into

And solutions in quantities sufficient to obtain an improved gdrophobic effect and improved electrical insulating properties. To check the electrical insulation properties, samples are made from three compositions of the proposed construction mixture with the addition of polyorganoalkoxysiloxane - phenylethoxy siloxane FES-66, in which the content of FES-bb is 2 wt.% Of cement, known samples with the addition of 1 wt.% Of% Cement alkyl (aryl) hydridsilsesquioxane - PHEH and samples from the composition without additives. In addition, make samples with different content of FES-6b (0.5-5 wt.%

The proposed offer without the use of silicone is -l l bavki6.0-10 3.7. 10 4.5 10 With an additive ,, A FES-66 3.2- 10 8.0- 10 4.5 10 Note. Samples manufactured by mass. %: cement water 11.2; FESmenta).

Claims (2)

Invention Formula A mortar, including portland cement, sand, water, and a silicone additive, characterized in that, in order to improve its electrical insulating properties, it contains from cement) based on a mixture of composition, 1 wt.%: cement 22.2, sand 66.6 / water 11, 2. Samples harden under normal humidity conditions, after which their electrical resistance is measured. in tab. 1 shows the electrical resistance (R) of samples with organosilicon additives according to the results of accelerated tests (after 10 min immersion in water), in Table 2 the conditional specific electrical resistance (p) of samples with the addition of FES-66 during prolonged immersion in water. Table table 2 organosilicon supplement polyorganoalkoxysiloxane of the general formula -5i-0 R I OR n 4 4 4. 5.0 10 ZD 10 2.4 10. fcf. 3.2- 10 3.5- 10 2.9 10 flax from a mixture of the composition, 21.76, sand 66.6 / 66 0.44 (2 wt.% From the center 58699 where R is an aliphatic or aromatic radical; R is an aliphatic radical; p - 2-20 in the following ratio of components wt.%: -5 Portland cement 10.1-40.0 Sand 40-84.1 46 Silicone additive0, 5-2.0 Water Others Information sources taken into account during the examination 1 USSR author's certificate 398588, class C 04 B 25/02, 1970. 2. USSR body certificate 348519, class C 04 B 13/24, 1970.