SU808468A1 - Raw mixture for making heat-insulating concrete - Google Patents

Description

The invention relates to construction materials and is intended for the production of lightweight, heat-resistant vetons. A known composition for the manufacture of refractory concrete, including 10.5–23.6%, low-carbon cement, 74–81% shutter, and 17–20% liquid glass | l |. The disadvantages of this composition are low temperature of the service of concrete and high bulk weight. The closest technical solution is a raw mix for the preparation of light heat-resistant concrete, including high-alumina cement 35-40% and as a filler heat-resistant aerated concrete 60-65% 2. The disadvantages of this mixture are thermal stability and strength at 100 ° C and significant shrinkage events. The circuit of the invention is an increase in the thermal resistance of the material, strength and reduction of shrinkage. This goal is achieved by the fact that the raw mix for the manufacture of insulating concrete, including high alumina cement and aggregate, contains granulated phosphate aggregate and g-waste from the production of phosphate materials of the 2 urn fraction as the supplier, with the following ratio of ketlonent, wt. filler33-43 Waste from the production of osAatizh materials aksh1I less than 2 km 17-42 VyshohogliioeMHCTi: jA cement Else Replacing the heat-resistant aggregate of aerated concrete to the aggregate, consisting of ne g torn phosphate aggregate and crushed phosphate wastes lead to an increase in concrete strength due to the interaction of phosphate aggregate grains with glyuyaemist 1 cement to form phosphate compounds. The increased phosphate aggregate bone is thermal, its shrinkage during the firing process is insignificant, the low coefficient of thermal expansion ensures a high thermal stability of the material and the stability of its dimensions at oazlichnyh temperatures. Zernist structure of the material with a developed network of microcracks, due to the presence in the mass of phosphate filler and waste phosphate production, are also the cause of increased heat resistance of the manufacturer of food products and largely extinguishes internal stresses arising during the heat treatment and service of the mat. rial

Examples of specific compositions.

Example. The mass consisting of (wt.%) High-alumina cement 40, granulated phosphate aggregate 43, crushed waste (Phosphate materials Lratsy 2 mm 17, sealed with water, mixed to obtain a homogeneous composition of plastic consistency. And molded by vibrocompaction.

PRI mme R 2. A mass consisting of (wt.%) High alumina cement 25, granular phosphate aggregate 33, crushed phosphate materials waste of 2 mm 42 fraction, closed with water, is mixed to obtain a homogeneous composition with a plastic consistency and is formed by vibration compaction.

Froze The mass consisting of (weight,%) high-alumina cement 33, granulated fowfat aggregate 38 and crushed waste phosphate materials. Fractions 2 mm 29, which are closed with water, are mixed to obtain a homogeneous composition of plastic consistency and molded by vibration compaction.

The table shows the characteristics of the heat-resistant material of the proposed composition, which is confirmed by the test report.

High alumina cement

Granular os4at aggregate

Ground waste phosphate materials

High alumina cement

Granular phosphate aggregate

Ground waste from phosphate materials

MeDo 1500 1000-30

150 1550 her 0.1

160

Up to 1550 1100-30

Me1600 is 0.1

Granular phosphate aggregate

Ground waste phosphate materials

ylsokoglinoekshsty cement

Aerated 60-65 (known)

Claims (2)

1.Patent of France No. 2172805, cl. From 04 to 35/00, published 73. 2. Authors certificate of the USSR Yu 497256 cl. C 04 B 15/00, 1975 (prototype).