SU739026A1 - Raw mix for producing cellular-concrete articles - Google Patents

Description

(54) RAW MATERIAL MIXTURES FOR THE MANUFACTURE OF CELL-CONCRETE PRODUCTS The invention is inclined to the composition of the raw mix and can be copied by the production of cellular concrete products of the enterprises of industrial materials. The compositions of mixtures for popcourous and cellular cellular concretes on the basis of mineral in cement (izvesh, cement), silica component (sand), pore-forming and various additives, increasing the strength characteristics of cellular concrete are known. The disadvantage of this composition of the OLA mixture of cellular concrete products is the complexity of the technological process, the need for heat and humidification treatment at high pressure, the use of an expensive additive (styrene) in a significant amount (25-28%). Also known is the composition of the raw material mixture based on gypsum-based 82-85 and melamine-formaldehyde resin 1518 2. However, this mixture does not provide the required regulatory strength characteristics and frost resistance of products, which limits the scope of their application. In addition, products made of a mixture of this composition require long-term heat treatment of the cp of curing the additive (drying on a vacuum for 2 hours, drying at a temperature of 30–60 hours, heat treatment at a temperature of 809 ° –8 hours. To increase strength, water resistance and the frost resistance of the proposed raw material mixture for the manufacture of cellular concrete products, including gypsum sticking and foaming agent, additionally contains a mixture of glycols containing, by weight,%; Ethylene glycol 0,1-20 Diethylene glycol O, Triethylene glycol O, 1-4 O Polyethylene glycol 2 O-90 Eff ry glycols rest

or bottoms production hexamershenediamines with blinding ratio of components, wt.%:

Pore-Forming Mixture of GlSalt or bottom residue of the production of hexamethylenediamines Gypsum in the living

moreover, the bottoms of the production of hexamethylamines contain the following components, wt.%:

These flax bottoms and triethylene mines are higher diamines (tatra, penta, hexamethylenediamine)

Table 1

Gypsum per gallant 99.85 99.55 99.25 Pore-forming agent (aluminum powder) Mix of glycol and Kubovy ostatei production of hexa metalidediamines

The preparation of raw materials and the preparation of the mixture were carried out using conventional techniques adopted for the production of cellular concrete. The additive was introduced into the mixer together with the mixing water directly during the preparation of the mixture. Phosphogypsum ™ cement-pusher in the cement was used as a gypsum cement.

Examples 1.4 Examples 2.5 Examples 3.6

Prototype

At the same time, control prototypes were made and tested.

Characteristics of the main construction and technical properties of samples made of concrete, made on the proposed raw mix, in comparison with prototgom shown in Table. 2,

table 2

25 25 20

0.8

0.67

0.65

15

0.6 9.85 99.55 99.3 a05 OD 5 ODO.Z 5 Thus, the use of the proposed raw mix made it possible to increase compressive strength by 25–30% frost resistance to 25 cycles and water resistance by 20–30%. 1 Raw material mixture for the manufacture of cellular concrete products, including gypsum in the grip and pore-forming, characterized in that, with the distance to increase strength, water resistance and frost resistance, it additionally contains a mixture of glycols containing% by weight: Ethylene glycol 0.1-2 O Diethylene glycol 0 , 1-40 Triethylene glycol 0.1-40 Polyethylene glycol 2O-90 Ethylene glycol ethers Remaining or bottoms of hexa methylenediamine production in the following ratio of components, wt.%; 6 0.05-0.25 Pore-forming agent A mixture of glycopyal or distillation residues produced hexamethi-% 0.1-0.5 lendiamines Else Gypsum dredging 2. The raw material mixture according to claim 1, which is used in production Hexamethyleneoamines contain the following components, wt.%: Ethylenediamine O., 1-15 Three ethylamino2O-4O Higher diamines (tetrapent, hexamethylenediamines Ostalnoe Istichniki I14) of the form, taken into account for expert ze. 1. Author's certificate of the USSR 392026, cl. From O4 to 15 / O2, 1972. 2. Kornkeshso M, A. to others. Polymers on melamine-formaldehyde sm Building and architecture Izti universities 5, 1967.

Claims (2)

Claim 1, The raw material mixture for the manufacture of cellular concrete products, including a gypsum binder and a blowing agent, characterized in that, in order to increase strength, water resistance and frost resistance, it additionally contains a mixture of glycols containing wt.%:, ^S Ethylene glycol 0.1-20 Diethylene glycol 0.1-40 T Rietile nglycol 0.1-40 Polyethylene glycols 20-90 Ethylene glycol esters Rest or vat residues of hexamethylenediamine production in the following ratio of components, wt.%: Pore former Mixture of glycols or bottoms from the production of hexame-% lenziamines Gypsum binder 2. The raw material mixture according to p. 0.05-0.25 0.1-0.5 The rest ^ characterized in that the still bottoms of the production of hexamethylenediamines contain the following components, wt.%: Ethylenediamine Triethylenediamine Higher diamines (tetrapenta, hexamethylenediamines 0.1-15 20-40 Rest