JPS6032580B2 - Roof or exterior wall structure coated with polymer cement mortar - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides roofs with excellent weather resistance and excellent physical properties by coating polymer cement mortar on molded thin steel sheets that constitute the roofs or exterior walls of residential and non-residential buildings. Another object of the present invention is to provide an outer wall surface at a lower cost than a conventional asbestos roof.

Since the roofs and exterior walls of residential and non-residential buildings are of course most exposed to the natural environment such as sunlight, wind and rain, it is important to provide membrane resistance that is as durable as possible. It is no exaggeration to say that this has become an issue for those involved in this industry.

In other words, in order to meet the above issues, the following conditions must be met.

{i} Membrane resistance must be maintained at least 1st grade, 'o} No rain leakage, gas leakage, fog formation, etc., 1. Non-flammability and heat insulation, sound insulation, etc., 8. Processing. However, at present, there is no one that completely satisfies the above conditions.

The present invention was created in view of the above problems and to solve them. That is, in the present invention, cement 20 to 50 (
parts by weight, 70 to 95 parts by weight of a compound consisting of 80 to 50 parts by weight of a mixture of blast furnace slag and cinnabar sand, and 30 to 95 parts by weight of an emulsion made of a synthetic resin or an equivalent substance.
This is a roof or exterior wall structure coated with polymer cement mortar, which is characterized in that a coating agent is applied by kneading 5 parts (by weight) with a small amount of water. Therefore, the thin steel sheet molded plate used for the roof or exterior wall structure of the present invention may be an original sheet of material that has the same size as the so-called colored iron plate or galvanized iron plate that is normally used for the roof or exterior wall surface. The coating agent applied to the surface is cement type 20-5 as mentioned above.
0 parts (by weight) of a mixture of blast furnace slag and anchor sand 80-50
(by weight) of a compound consisting of 70 to 95 (by weight) parts
and 3 parts of an emulsion consisting of a synthetic resin or a substance with the same effect.
It is made by kneading 0 to 5 parts by weight with a small amount of water.

This coating agent is an anti-corrosion coating agent mainly used for on-site construction, and the reason why this coating agent was adopted in the present invention is as follows.
With general anti-corrosion paints, there are various restrictions on the surface treatment of steel plates, the painting environment, etc. No matter which factor is considered, it often causes problems for the painting staff and delays the construction period. Accordingly, the present invention aims to improve the anticorrosive effect of the alkali contained in cements and the adhesion by adding a polymer emulsion.

Further, in order to further improve the physical properties, blast furnace slag and cinnabar sand were added to form an even stronger coating. The cement used in the coating agent in the present invention is Bortland cement or blast furnace cement, and its action is to obtain durability. Also, the calcium hydroxide contained in the cement is strongly alkaline. It acts as a rust preventive for iron.

However, even if cement is used alone, long-term durability cannot be expected due to cracking and peeling. Also, even if sand is mixed with it, there are many problems for the same reason, such as rain leakage due to cracks, so in the present invention, sand is used as an extender pigment in the paint to compensate for the above-mentioned drawbacks such as clutching and peeling. A mixture of slag and cinnabar sand is blended. Furthermore, in the present invention, a polymer emulsion is blended to reinforce the adhesive strength of cements. Possible polymer emulsions include water-removalable or water-dilutable aqueous polypinyl alcohol solutions, petroleum resins and synthetic rubber latex produced during naphtha decomposition, and nonionic or cationic dispersants. Examples include emulsions containing surfactants. Therefore, each of the above compounded materials is first mixed with a mixture of cement, blast furnace slag, and cinnabar sand to form a compound, then a polymer emulsion is blended with this using a mixer, and a small amount of water is added. Knead to a paintable consistency. Painting is done with a spray gun, trowel, brush, etc. The effect of the blast furnace slag and ridge sand in the above-mentioned coating agent is that they serve as the aforementioned extender pigments, but the blast furnace slag is made by drying and pulverizing blast furnace misakubo, which is a by-product at a steelworks. used.

This blast furnace slag is active and reacts with the free lime in the cement to produce hardly soluble silicate lime, which stabilizes the coating layer. What is also important is that the slag itself has water-retentive properties (adsorbs water during kneading), and this water prevents rapid drying during coating film formation and prevents the occurrence of hair cracks. Therefore, the particle size of the slag used in this case is preferably 20 mesh or less, and cinnabar sand is added as an extender pigment in the paint with the intention of improving the strength of the coating, and its particle size is natural cinnabar sand. Commercially available No. 4~
Those in the range of No. 8 are preferred. Furthermore, the reason for limiting the blending ratio of each compounding material in the above coating agent is that the optimum range was found based on research results.
This is because it has been confirmed that it is disadvantageous for the purpose of the present invention if each compounding material is less than the lower limit or exceeds the upper limit.

The coating and engraving of the present invention having the above-described structure involves coating the entire surface of an original plate made of a thin iron plate applied to a roof or an external wall surface and the joint part with other construction members to a thickness of about 1 to 5 ribs. be. The effects obtained by this are as follows.

'a} Both the roof and exterior walls are durable and have a service life that is at least longer than the first rank.

'b' Since rain leakage etc. is completely prevented, it is possible to form a lotus house structure in which the roof and the gutter are integrated.

'c} Sealing, bolting, etc. are not required. 'd} If a seal cord is further applied on top of this coating agent coating layer, the waterproof property can be further improved.

{e' The thermal conductivity is significantly lower than that of a metal plate, and it has a heat insulating effect.

{f} It has the effect of blocking the sound of rain.

omitted) A variety of colors can be obtained.

Advantage) Prevents branches, fog, mist, etc.

In addition to the above-mentioned effects, if the present invention is applied to roofs in regions where there is a lot of snowfall in winter, there will be no danger of people slipping and falling when they climb on the roof to remove snow, and It is expected to be effective in preventing people from falling when repairing.

Claims (1)

[Claims] 1. Apply 70 parts of a compound consisting of 20 to 50 parts (by weight) of cement and 80 to 50 parts (by weight) of a mixture of blast furnace slag and silica sand to the surface of the thin steel plate constituting the roof or outer wall surface.
It is characterized by being coated with a coating agent made by kneading ~95 parts (by weight), 30 to 5 parts (by weight) of an emulsion whose main component is a synthetic resin or a substance with the same effect, and a small amount of water. Roof or exterior wall structure coated with polymer cement mortar.