SU1268422A1

SU1268422A1 - Method of preparing raw mixture

Info

Publication number: SU1268422A1
Application number: SU843805630A
Authority: SU
Inventors: Виктор Николаевич Гусаров; Павел Антонович Иващенко
Priority date: 1984-10-29
Filing date: 1984-10-29
Publication date: 1986-11-07

Abstract

С целью повышени прочности сырца изделий и прочности сцеплени готовых изделий с кладочным раствором Тюсле дозировани двуводный фосфогипс и серпентинит, вз тые в соот- . ношении от 1:2 до 1:3, подвергают предварительной термообработке в автоклаве при 150-200&deg;С, а остальную часть серпентинита обрабатывают диспергатором НФ в виде водного раствора 2-5%-ной концентрации, а затем перемешивают со шлакопортланДцементом И керамзитовым песком, при этом I соотношение компонентов смеси составл ет , мас.%: серпентинит 54,5-69,8; (Л шлакопортландцемент 10-15; двуводный фосфогипс 5-10; диспергатор НФ 0,20 ,5. 4 табл. а 00 hO tcIn order to increase the strength of raw products and the strength of adhesion of finished products with masonry mortar Thousse, dosing phosphogypsum and serpentinite, taken in the corresponding-. worn from 1: 2 to 1: 3, subjected to pre-heat treatment in an autoclave at 150-200 ° C, and the rest of serpentinite is treated with an NF dispersant in the form of an aqueous solution of 2-5% concentration, and then mixed with slag Portland; Cement I claydite sand, while I the ratio of the components of the mixture is, wt.%: serpentinite 54,5-69,8; (L slag Portland cement 10-15; two-water phosphogypsum 5-10; dispersant NP 0.20, 5. 4 tab. A 00 hO tc

Description

Изобретение относится к промышленности строительных материалов, а именно к производству силикатного кирпича и камней.The invention relates to the construction materials industry, namely the production of silicate brick and stones.

Цель изобретения - повышение прочности сырца изделий и прочности сцепления готовых изделий с кладочным раствором.The purpose of the invention is to increase the strength of raw products and the adhesion of finished products with masonry mortar.

Пример . В лабораторных опытах и для изготовления контрольных изделий стандартного формата (кирпич размером 250x120x65 мм) используют серпентинит - отходы обогащения асбестовых руд, шлакопортландцемент, керамзитовый песок с размером частицAn example. In laboratory experiments and for the manufacture of control products of a standard format (brick size 250x120x65 mm), serpentinite is used - asbestos ore dressing waste, slag Portland cement, expanded clay sand with a particle size

2-5 мм, двуводный фосфогипс с удельной поверхностью 3000-3500 см²/г и диспергатор НФ.2-5 mm, two-water phosphogypsum with a specific surface of 3000-3500 cm ² / g and an NF dispersant.

Составы сырьевых смесей и параметры их подготовки приведены в табл.1, физико-механические свойства изделий из них - в табл.2, химические составы серпентинита и двуводного фосфогипса - в табл.З, а гранулометрический состав серпентинита - в табл.4.The compositions of the raw mixes and the parameters of their preparation are given in Table 1, the physicomechanical properties of the products made of them are given in Table 2, the chemical compositions of serpentinite and two-water phosphogypsum are shown in Table 3, and the particle size distribution of serpentinite is shown in Table 4.

После дозирования компонентов часть серпентинита и двуводный фосфогипс повдергают термообработке в автоклаве, а остальную часть серпентинита увлажняют 2^5%-ным водным раствором диспергатора НФ, а затем все компоненты смеси перемешивают в смесителе.After dosing the components, part of the serpentinite and two-water phosphogypsum are subjected to heat treatment in an autoclave, and the rest of the serpentinite is moistened with a 2 ^ 5% aqueous solution of the NF dispersant, and then all components of the mixture are mixed in a mixer.

Лабораторные образцы - цилиндры высотой и диаметром 50 мм и контроль-, ные изделия (кирпич размером 250х х120x65 мм) формуют при удельном давлении прессования 200 кгс/см² , автоклавируют их по режиму 2+8+3 ч при давлении пара 8 атм.Laboratory samples — cylinders with a height and diameter of 50 mm and control products (bricks 250x х120x65 mm in size) are molded at a specific pressing pressure of 200 kgf / cm ² , they are autoclaved according to the 2 + 8 + 3 h mode at a steam pressure of 8 atm.

Сцепление полученных изделий с кладочным раствором определяют следующим образом. Готовят песчано-цементный раствор стандартного состава, затем наносят на поверхность образца размером 120x65x30 мм слой этого раствора толщиной 10 мм и на него укладывают следующий образец изделия.The adhesion of the obtained products with masonry mortar is determined as follows. A sand-cement mortar of standard composition is prepared, then a layer of this solution with a thickness of 10 mm is applied to the surface of a sample of 120x65x30 mm in size and the next product sample is laid on it.

Величину усилия, необходимую для отрыва кирпича от раствора,определяют с помощью прибора ПС-3 через 1-3-7 и 28 сут.The amount of effort required to tear the brick from the mortar is determined using the PS-3 device after 1-3-7 and 28 days.

Как видно из полученных данных, предлагаемый способ подготовки сырьевой смеси позволяет повысить прочность сырца силикатного кирпича с 2-4 до 16-18 кгс/см^г и сцепление готовых из10 делий с кладочным раствором с 0,171,54 до 4,31-5,47 кгс/см². По прочности при сжатии и изгибе кирпич соответствует требованиям для марки 150 и имеет пониженную объемную массу.As can be seen from the obtained data, the proposed method for preparing the raw mix allows to increase the strength of the raw silicate brick from 2-4 to 16-18 kgf / cm ^g and the adhesion of the finished products with 10 masonry mortar from 0.171.54 to 4.31-5.47 kgf / cm ² . In terms of compressive and bending strength, the brick meets the requirements for grade 150 and has a reduced bulk density.

Claims

The invention relates to the construction materials industry, and to the production of silicate bricks and stones. The purpose of the invention is to increase the strength of the raw products and the strength of adhesion of the finished products with masonry mortar. In laboratory experiments and for the manufacture of standard-format test items (brick size 250x120x65 mm), serpentinite is used - asbestos ore dressing waste, slag portland cement, 2-4 mm claydite sand, phosphogypsum bivaric with a specific surface of 3000-3500 cm / g, and NF dispersant . The compositions of the raw mixtures and the parameters of their preparation are given in Table 1; the physicomechanical properties of the product made from them are given in Table 2, the chemical compositions of serpentinite and dvukhvodnogo phosphogypsum are given in Table 3, and the granulometric composition of serpentinite is given in Table 4. After dosing the components, a part of serpentinite and phosphogypsum dihydrate are heat treated in an autoclave, and the rest of serpentinite is moistened with a 2-5% aqueous solution of the dispersant NP, and then all components of the mixture are mixed in a mixer. Laboratory samples — cylinders 50 mm in height and 50 mm in diameter and control products (brick size 250x X120x65 mm) are molded at a specific pressure of 200 kgc / cm pressurized at 2 + 8 + 3 h at a vapor pressure of 8 atm. The adhesion of the obtained products to the masonry mortar is determined as follows. A sand-cement mortar of a standard composition is prepared, then a nanotube is applied onto the sample surface 120x65x30 mm in size and a layer of this solution 10 mm thick is applied to it with the next product sample. 222 The magnitude of the force required to detach a brick from a mortar is determined using the PS-3 device after 1-3-7 and 28 days. As can be seen from the obtained data, the proposed method of preparing the raw mix can increase the strength of raw silica brick from 2-4 to 16-18 kgf / cm and the adhesion of finished products to masonry mortar from 0.171, 54 to 4.31-5.47 kgf / cm. In terms of compressive strength and bending, the brick meets the requirements for the 15C grade and has a lower bulk density. Claims The method of preparing the raw material mixture for the manufacture of autoclaved silicate products, including dosing and mixing of serpentinite and fine aggregate with slag portland cement, characterized in that, in order to increase the strength of raw materials and adhesion of finished products with masonry mortar, an additional two-water phosphogypsum is introduced into the mixture , and as fine aggregate, expanded clay sand, at first bicarbonate phosphogypsum and serpentinite, taken in a ratio of from 1: 2 to 1: 3, is subjected to heat treatment in an autoclave at 150-200C, and the rest of serpentinite is treated with dispersant NP in the form of an aqueous solution of 2-5% concentration, and then mixed with slag portland cement and claydite sand, the ratio of mixture components, wt.%: Serpentinite 54,5-69,8 Shlakrportlandtsement10-15 Expanded clay15-20 Two-anode phosphogypsum 5-10 Disperser NF 0.2-0.5

Table 1

Serpe itinit 36.4 1.85 10.9 gypsum 0.12 0.12 0.10

table 2

.1 Table 3 36.3 1.8 0.03 0.09 0.04 0.08 12.15 99.64 1.23 0.16 31,000.06 0.04 0.31 42.26 19.4 99 , 47 3.01 Content, 0.86-1.12 4.80-5.74

T a blitz 4 11,31-14,17 38,70-41,1241,73-43,68 0,8,