RU2087446C1 - Raw mixture for facing tile - Google Patents

Abstract

FIELD: building industry. SUBSTANCE: raw mixture has, wt.-%: finely dispersed cement 53.0-56.5; finely crushed quartz sand 18.2- 22.7; carbamidebenzoguanamine formaldehyde resin 0.3-0.8; superplasticizer agent based on condensation product of naphthalene sulfoacid with formaldehyde-C₃ 0.3-0.5; pigment 3.5-4.2, and water - the rest. Properties: compression limit strength is 68.0 MPa, water absorption for 24 h - up to 10%, adhesion to cement-sandy composition - up to 5.0 MPa. EFFECT: improved quality of mixture. 2 tbl

Description

 The invention relates to raw mixes for the manufacture of tiles used for the internal lining of walls and partitions.

A known mixture for decorative work, including cement and sand with a ratio of 1: 3-3.5. The size of the sand is from 0.15 2.5 mm to 0.15 5 mm [1]
Closest to the claimed technical essence and the achieved result is a mixture comprising 1 m ³ :
Cement 597 kg
Fine sand 1311 kg
Water 251 kg
The consumption of superplasticizer in this mixture is 0.6% by weight of cement [2]
The solution to the technical problem is aimed at increasing the tensile strength of facing tiles in compression, adhesion when they are attached to structures, reducing their water absorption, as well as eliminating the use of complex technological equipment in their manufacture.

 This is achieved by the fact that the raw material mixture for tiles, including cement, fine sand, a superplasticizer based on the condensation product of sodium salt of naphthalene sulfonic acid with formaldehyde C-3 and water, contains as a cement finely dispersed cement and additionally urea-benzene guanamine-formaldehyde resin with the following ratio to pigment wt.

Fine cement 53.0 56.5
Fine quartz sand 18.2 22.7
Carbomidobenzoguanamine formaldehyde resin 0.3 0.8
Specified superpastifier 0.3 0.5
Pigment 3.5 4.2
Water Else
Examples of the raw mix are presented in table 1.

The carbamide-benzene guanamine-formaldehyde resin KBF (TU 605-2111007) has the following characteristics: pH 7.5 8.5, completely soluble in water, heat resistance up to 300 ^o C, viscosity according to VZ-1 at 20 ^o C from 17 to 60 s. As pigments can be used oxides of cobalt, copper, chromium, iron or manganese.

 The test results of the facing slabs from the raw mix are presented in table. 2.

 The technology for preparing the raw mix consists in mixing finely dispersed cement and finely ground sand with a water-soluble resin, introducing superplasticizer, pigment and water into the composition. The mixture is loaded into a mixer of any design and mixed thoroughly for 15 minutes. After mixing, check the working consistency of the mixture (immersion depth of the standard cone), which should be OK-1 12 cm. If the consistency is less than 7 cm, water is introduced into the composition and additional mixing is carried out for 0.5 to 1.5 minutes.

After this raw material, the mixture is loaded into cassettes, which are exposed to vibration for 15 minutes. After vibration, the raw material mixture is steamed in cassettes at t 95 ^o C for 6 hours

The technological process of manufacturing cladding tiles is completed by keeping them in cassettes at t 20 ^o C and t 60% for 4-6 hours with constant wetting of the back of the tiles.

Claims (1)

 The raw material mixture for tiles, including cement, fine sand, a superplasticizer based on the condensation product of sodium salt of naphthalene sulfonic acid with C-3 formaldehyde and water, characterized in that it contains highly dispersed cement and, in addition, urea-benzo-guanamine-formaldehyde resin, the ratio of wt. Fine cement 53.0 56.5
Fine sand 18.2 22.7
The specified superplasticizer 0.3 0.5
Urea-benzo-guanamine-formaldehyde resin 0.3 0.8
Pigment 3.5 4.2
Water Rest

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