RU193015U1 - WINDOW PLATE - Google Patents

Abstract

The utility model relates to the field of construction, in particular to window sills, and can be used in window construction and window opening decoration. The technical task of the proposed solution is to simplify the technology, reduce production time, increase bending strength. To perform this task, a window sill made from gypsum cement composition. The device uses a gypsum cement composition, the composition of which contains the following components, wt. %:

Description

The utility model relates to the field of construction, in particular to window sills, and can be used in window construction and window opening decoration.

The closest technical solution to the proposed device is a window sill made of a cement composition (see patent RU No. 188528 publ. 04.16.2019).

The disadvantage of the plate is the complexity and complexity of manufacturing, insufficient bending strength.

The technical task of the proposed solution is to simplify the technology, reduce production time, increase bending strength.

To accomplish this task, a window sill made of a gypsum-cement composition is proposed, the device using a gypsum-cement composition, the composition of which contains the following components, wt. %:

Semi-aquatic gypsum 62-72 Portland cement 18-25 Pulp and paper industry waste (osprey) (in terms of dry matter) 0.5-12 Technical lignosulfonates (in terms of dry matter) 0.15-1.5 Soda ash 0.05-0.2 Quartz sand the rest is up to 100% with water-cement ratio 2.7-3.5

A distinctive feature is that the device uses a gypsum cement composition, the composition of which contains the following components, mass. %

Semi-aquatic gypsum 62-72 Portland cement 18-25 Pulp and paper industry waste (osprey) (in terms of dry matter) 0.5-12 Technical lignosulfonates (in terms of dry matter) 0.15-1.5 Soda ash 0.05-0.2 Quartz sand the rest is up to 100% with water-cement ratio 2.7-3.5

The window sill is made as follows.

Pre-metered components of the mixture are loaded into a mortar mixer (for example SB-148) in a certain sequence: water, cement, lignosulfonates, soda, osprey, sand, the mixture is mixed for 1 minute, then the gypsum is loaded. They signal the movement of the mixers to the filled mold. While the mixer is moving, gypsum is mixed for 1 ÷ 2 minutes. Upon arrival of the mixers at the installation site, the mixers are turned off.

The prepared mixture is poured into the mold.

Heat and moisture treatment, as well as long-term drying of the window sill from this raw material mixture is not required.

After 15-20 minutes, the mixture sets, and after 30-45 minutes lightweight concrete has 30% of the required strength and the product is redressed. Subsequently, the products harden without thermal moisture treatment and upon reaching 70% of the design grade for tensile strength during bending are released to the consumer for use in work.

Example. Under production conditions, a prototype window sill was made with a length of 1,500 mm, a width of 300 mm and a thickness of 50 mm.

For the manufacture of used raw mix containing the following components, in mass. %:

Semi-aquatic gypsum - 65 Portland cement - twenty Pulp and paper industry waste (osprey) (in terms of dry matter) - 10 Technical lignosulfonates (in terms of dry matter) - 0.3 Soda ash - 0.1 Quartz sand - the rest is up to 100%, with water-cement ratio - 3

The low density of the gypsum cement composition (1.1-1.4 tn / m ³ ) used in the manufacture of window sills, in contrast to heavy or fine-grained concrete (1.8-3.0 t / m ³ ), allows to reduce the weight of the product.

Simplification of technology and reduction of production time is achieved due to the quick setting of the raw mix (15 minutes, unlike 2 to 3 hours) and hardening before stripping (30-45 minutes, unlike several days), the absence of heat-moisture treatment, and less formwork.

During the manufacturing process, it was found that the proposed raw material mixture simplifies the technology, increases the bending strength by 20% compared with the prototype, incombustibility, good nailing, sawing, drilling and planing, reducing production time.

Simplification of technology and reduction of production time is achieved due to the lack of preliminary preparation of osprey, in contrast to sawdust, which must be crushed to the desired fraction and dried to a certain moisture content (V.Ya. Lipovskis, V.I. Alksne, F.F. Alksnis “Reserves of increase production of wall materials through the disposal of industrial waste in the Latvian SSR ”, Riga 1987).

An increase in bending strength by 20% compared to the prototype is achieved through the use of osprey, which is a structure-forming component of the raw material mixture, has independent strength characteristics as a binder ("New structural heat-insulating materials based on osprey - waste from the pulp and paper industry." dissertations for the degree of candidate of technical sciences. Kozlov Igor Alekseevich. Chelyabinsk, 2009).

Flammability is achieved through the use of gypsum. Samples of the hardened composition from the raw material mixture in accordance with paragraphs 3, 4 of the Federal Law No. 123-ФЗ are classified as non-combustible (NG) (REPORT No. 07-2015 “Determination of the fire hazard index of samples.” Federal state budgetary institution “Forensic expert institution of the federal fire-fighting Test Fire Lab services in the Perm Territory. Perm, 2015).

Claims (2)

A window sill made of a gypsum-cement composition, characterized in that the device uses a gypsum-cement composition, the composition of which contains the following components, wt. %: Semi-aquatic gypsum 62-72 Portland cement 18-25 Pulp and paper industry waste (osprey) (in terms of dry matter) 0.5-12 Technical lignosulfonates (in terms of dry matter) 0.15-1.5 Soda ash 0.05-0.2 Quartz sand the rest is up to 100% with water-cement ratio 2.7-3.5