SU797875A1

SU797875A1 - Method of manufacturing construction articles

Info

Publication number: SU797875A1
Application number: SU792737815A
Authority: SU
Inventors: Константин Васильевич Чаус; Юрий Михайлович Баженов; Михаил Тимофеевич Кофанов; Арслан Магомедович Казиханов
Original assignee: Московский Ордена Трудового Красногознамени Инженерно-Строительный Институтим. B.B.Куйбышева
Priority date: 1979-03-15
Filing date: 1979-03-15
Publication date: 1981-01-23

Description

(54) СПОСОБ ИЗГОТОВЛЕНИЯ СТРОИТЕЛЬНЫХ ИЗДЕЛИЙ(54) METHOD FOR MAKING CONSTRUCTION PRODUCTS

II

Изобретение относитс к промышленности сборного железобетона, в частности к способам изготовлени изделий с декоративной отделкой.The invention relates to the precast concrete industry, in particular, to methods for manufacturing articles with decorative trim.

Известен способ изготовлени н1зруж- ных стеновых панелей с декоративной отделкой методом формовани лицом вниз при котором на дно формы насыпают под- стилающий слой из мелкого песка, на который укладывают крошку или щебень из декоративного материала с таким расчетом , чтобы нижн часть декоративного материала погружалась в подстилающий слой. Остальную часть формы заполн ют бетонной смесью. После затвердевани и расформовки издели на лииевой поверхности панели обнажаетс декоративна крошка или щебень, при формовании заглубленные в подстилающий слой песка pLjThere is a known method of manufacturing outward wall panels with decorative trimming by face-down molding, in which a spreading layer of fine sand is poured into the bottom of the mold, onto which crumb or crushed stone of decorative material is laid in such a way that the lower part of the decorative material is immersed in the underlying layer. The rest of the form is filled with concrete. After hardening and unfolding the product on the Li surface of the panel, decorative chips or crushed stone are exposed, while being molded, pLj are embedded in the underlying layer of sand.

Недостатком известного способа вл етс плохое сцепление цементного камн с частицами фактурного сло .The disadvantage of this method is the poor adhesion of the cement stone to the particles of the textured layer.

Наиболее близким техническим решением вл етс способ изготовлени стро-The closest technical solution is the method of making construction

ительных изделий, включающий укладку в форму фактурного сло из дробленого материала на подстилающий слой песка, нанесение латексного покрыти , заливку бетонной Смеси, вибрировани ее и последующую термообработку издели 2.It consists of laying the textured layer of crushed material on the underlying layer of sand, applying a latex coating, pouring the concrete mix, vibrating it and then heat treating the product 2.

Недостатком известного способа вл етс то, что отдельные частицы декоративного материала плохо сцепл ютс с цементным камнем бетона и выпадают из него в прсщессе эксплуатации здани . Помимо этого фактурный слой обладает низкой морозостойкостью из-за применени бетонов повышенной подвижности.The disadvantage of this method is that individual particles of decorative material poorly adhere to the cement stone of concrete and fall out of it during the operation of the building. In addition, the textured layer has a low frost resistance due to the use of concretes of increased mobility.

Цепь изобретени - повышение плотности фактурного сло и улучшение сцеплени его частиц с цементным камнем.The chain of the invention is to increase the density of the textured layer and improve the adhesion of its particles to the cement stone.

Claims

This goal is achieved in that according to the method of manufacturing building products, including laying the textured layer of crushed material into the underlying necKia layer, applying a latex coating, pouring the concrete mix, vibrating it and subsequent heat treatment of the product, in the process of vibrating the concrete mix, vacuuming is carried out a layer of sand at a vacuum of 0.4-O, 9 at. The method is carried out as follows. On the mesh bottom of the form is laid. cotton fabric, on top of which a layer of sand is poured in the order of 5 cm, depending on the thickness of the product being made. Then the sand layer is leveled and the texture layer is laid with the subsequent fixing of the texture with the SCS-65 Hz latex coating and pouring of the concrete mix. Next, vacuuming is performed from the bottom while air is rarefied with 0.8 at. The use of vacuuming from below in the manufacture of face-down products through a layer of sand with pre-laid and fixed latex coating of decorative particles has several advantages. The textured layer is compacted by suction of water, vapor-air mixture, and air, which leads to an increase in the decorative material with cement stone, which increases the frost resistance of the product and the durability of the actual layer. The frost resistance of the products according to the proposed technology increases 2-2.4 times and is 100-120 Mp3. Increased frost resistance leads to an increase in product life. At the same time, the strength of the textured layer increases by an average of 28%. The test results for density, strength and frost resistance are summarized in the table. 5 The application of the proposed method allows, by reducing the consumption of cement per 1 meter of product by 25-30 kg, to save on one outer panel about one ruble. In addition, the quality and durability of the textured layer is significantly improved, eliminating the need for costly repairs. The invention claims the manufacture of building products, including laying the textured layer of crushed material into the underlying layer of sand, applying a latex coating, pouring the concrete mix, vibrating it and then heat treating the product, characterized in that, in order to increase the density of the textured layer and improve its adhesion particles with a cement stone, in the process of vibrating the concrete mixture, the sand layer is evacuated at a vacuum of 0.4-0.9 at. Sources of information taken into account in the examination 1. Manual on the technology of forming concrete products. M., stroiizdat, 1977.

2. Authors certificate of the USSR N 481579, cl. B 28 B 11/00, 1973.