JPS6080656A - Construction of coated wall - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wall coating method using a base board composed of a lower iris substrate and a layer of granulated blast furnace slag hydraulic composition, and the purpose and purpose thereof are When constructing earthen walls such as mortar for architectural structures, the base 61j
2. Simplification of 2.8, measuring the reduction in the construction period, and obtaining a painted wall with excellent waterproofing properties without the occurrence of cracks.

Since then, when it comes to directly built mulberry trees, moss has been applied to the outer and inner walls.
, tr , , ;L Mh Lh, > Sound A jd
M +-do(-, small'L ly l?L;-Le bL, nail metal lath on top of it, Suff -]/l/&
The common method is to apply mortar in the order of a base coat, an intermediate coat, and a top coat on the base obtained by nailing the mortar, and then apply a finishing coat on top of that. Since this groundwork is done at a construction site, it has drawbacks such as difficulty in selecting homogeneous materials and the need for a large amount of manpower and construction time. In addition, cracks occur in the mortar due to shrinkage as the mortar dries and hardens, as well as warping of the wood. Currently, cracks that occur are not only aesthetically undesirable, but also cause leakage of rainwater, staining interiors, and rotting pillars and wood grains. Other materials such as dolomite plaster and stucco are made using plasterboard bases and ground flooring, but they have drawbacks such as the complicated process, long construction times, low strength, and not being able to match earthquake-resistant structures. There is. In addition, in recent years, asphalt base materials, synthetic resin emulsions mixed with aggregate, or cement, synthetic resin emulsions, and sand, have been used as mortar base materials.
There is a method that uses a composition made by combining various types of crushed stone and synthetic resin foam that is coated on a wooden board, but it is difficult to apply mortar and adhere well, and it is sensitive to heat. ,
It has the disadvantage that adhesive strength varies.

In addition, by applying a cement mixture to the substrate surface and quickly heating and drying it, the cement hardening reaction was interrupted. Method for constructing mortar walls to complete cement hardening reaction (Special Publication No. 55-18814:'
) can also be seen. This method has the disadvantage that hardening of the cement proceeds even if moisture is supplied by a method other than mortar application. For example, when constructing a 94↓ building, it takes several weeks to several months after the foundation board is installed and the mortar is applied.During that time, moisture is supplied by moisture in the air or rainwater. be done. During this time, cement hardening 1 progresses, and even efflorescence caused by Ca (OH) 2 produced by cement hardening is sometimes observed on the surface.

Granulated furnace slag is obtained by pulverizing blast furnace slag, which is a by-product in blast furnaces during pig iron production, and has latent hydraulic properties, which become significantly hardenable in the presence of an alkaline stimulant. It is also well known that granulated blast furnace slag reacts with slag to produce ettrin guide. Conventionally, granulated blast furnace slag has been used as blast furnace cement and high sulfate cement by taking advantage of its reactivity. Recently, attempts have been made to mix granulated blast furnace slag and slag-based compositions with alkaline irritating substances, fibers, fillers, etc., mold the mixture, and use it as an inorganic molded plate. Although these molded plates have excellent properties such as low curing shrinkage and low surface alkalinity, they also have drawbacks such as low initial strength and low surface hardness.

In view of the above, the present inventors investigated a new wall coating construction method, and found that a layer of granulated blast furnace slag-based hydraulic composition r (, alkaline wall coating materials such as mortar) was applied to the Shimoyama IJ board. The knowledge that an excellent wall coating can be obtained by applying the hydraulic composition to form a wall coating and promoting the curing of the hydraulic composition [(8) has led to the present invention. , the present invention fixes to a wall structure a base plate composed of a lower Jll+ substrate and a granulated blast furnace slag-based hydraulic composition layer made of granulated blast furnace slag, granulated blast furnace slag, ceracola, portland cement, synthetic resin emulsion, and rubber latex. The present invention relates to a wall coating construction method characterized by applying an alkaline wall coating material to the surface thereof.

Next, the present invention will be explained in detail.

Granulated blast furnace slag-based hydraulic composition IS, R according to the present invention
ii, the main ingredients are granulated blast furnace slag, Ceracola, Portland cement, synthetic resin emulsion or synthetic gel, and latex, and the slurry obtained by adding water to these and mixing them is applied to the base substrate, and then the moisture is removed. scattering,
This can be obtained by curing the composition. Since the surface of the hydraulic composition layer is in contact with air, the surface is neutralized by carbon dioxide gas in the air, thereby inhibiting the hardening reaction of the granulated blast furnace slag. This is because C a (OH)2 generated by water utilization of Bortland cement in the composition is neutralized by carbon dioxide gas,
This is because it becomes impossible to maintain a pH sufficient to act as an alkaline stimulant for the granulated blast furnace slag. Therefore, the hydration reaction of granulated blast furnace slag and the formation reaction of IJ guide will be suppressed. By removing moisture in this way, the curing reaction is stopped, and in addition, by means such as applying an alkaline wall coating material to the hydraulic composition whose curing reaction is suppressed by neutralization from the surface, When moisture is supplied and the pH of the hydraulic composition is increased, the curing reaction is restarted and accelerated.

The base plate 1b according to the present invention is a base plate, a wooden board such as a particle board, a fiber board, a wood wool cement board, a wood chip cement board, an inorganic board such as an asbestos cement board, a pulp cement board, a silica board, a magnesium carbonate board, etc. , foamed plastic plates such as foamed urethane, foamed styrene, foamed vinyl chloride, and foamed phenol. A waterproof layer may be formed on these base substrates in advance. Especially when the base substrate is made of wood, it is not only effective to protect the wood board from water, but also to strengthen the surface of the wood board and prevent damage.
It is something that will be done.

A granulated blast furnace slag-based hydraulic composition 1 and a horse chestnut are formed on the base substrate, and the granulated blast furnace slag I'i used for the hydraulic composition is used as described above. It is obtained by pulverizing blast furnace slag, which is produced as a by-product, and is in the form of a fine powder. The Seracola species may be dihydrated, semi-hydrated, or anhydrous. Whether it is portland cementitious cement, early strength portland cement, white portland cement, etc., blast furnace cement, high sulfate cement is also granulated blast furnace slag, and the mixing ratio of portland cement is granulated blast furnace slag weight - 95 weight ratio, senkou type 5 100 parts by weight of a mixture consisting of ~40% by weight of Portolan, Dosenont 3-10
It is t. Etringai when there are few Senoko! If there are too many boxes, the water resistance will be poor.

The amount of raw raw material in Portland cement lucari has decreased, and the amount of granulated blast furnace slag has decreased.
D The effect as an alkaline stimulant is reduced. If Portland cement is used in excess, it will become more alkaline and the adhesive force with mortar will become unstable, causing variations in strength.

The synthetic resin emulsion or rubber latex only needs to be stable when mixed with granulated blast furnace slag materials.
Its action is as a binder, and it not only strengthens the hydraulic composition layer, but also increases the adhesive strength with the base substrate and the coating wall, and gives flexibility to the cured hydraulic composition. It has the effect of giving sex. The mixing ratio of these materials is preferably 2 to 50% by weight based on solid content relative to granulated blast furnace slag, Ceracola, and Portland cement. In addition to the hydraulic composition, weight reduction can be achieved by adding lightweight inorganic materials, foamed plastic particles, silica sand, kansui stone, crushed slag stone, etc. to the hydraulic composition. (lower blade)! The moon can have a wide range of properties. In addition, fibers such as inorganic fibers, natural fibers, and synthetic fibers, thickeners, coagulation modifiers, dispersants, foaming agents, colorants, fillers, etc., which are normally used as long as they do not impede the achievement of the purpose of the invention. '1. It is also possible to add additives.

The formation of a granulated blast furnace slag-based hydraulic composition layer on the base substrate is performed by coating the hydraulic composition slurry with a coating device such as a roll coater or a sedge renotator, or with a spray coating device, and then using a hot air dryer, This is done by drying using an infrared heater or the like to remove moisture. When the surface shape is uneven, the surface area increases, which has the advantage of increasing the adhesion with wall coating materials and making it easier to apply the coated camphor wood. In forming the hydraulic composition, compositions with different compositions may be arranged alternately or in multiple layers. The hydraulic composition, which has dried and evaporated water after coating, hardly reacts and the weight increase due to water utilization reaction is also very small. Moreover, the hydraulic composition layer is gradually neutralized from the surface by carbon dioxide gas in the air, and Pl-1 &:I decreases. At this time, it is more effective to increase the concentration of carbon dioxide in the drying oven or to bring carbon dioxide into direct contact with the drying oven. If the hydraulic composition no longer exhibits its effect as an Alka-11 stimulant, it will not harden simply by adding moisture.

The strength of the hydraulic composition is mainly derived from the synthetic (oil emulsion) rubber latex, so the composition layer is flexible, can be processed properly, and can fully cope with the deformation of the underlying substrate. It is possible.

Just by fixing the base plate obtained in this way to the wall structure such as pillars with nails, it is possible to create a wall base 111. It is often possible to omit the process of undercoating or intermediate coating, which is a complicated process. After fixing to the wall structure, the joints of the base plate are filled with caulking material, etc., or joint tape is applied. It is important to carry out waterproofing treatments such as pasting.

The alkaline wall coating material applied to the surface of the hydraulic composition layer is cement mortar or lime-based plaster, both of which are carbon-based.
a(OH)2IC has strong alkalinity, and by applying these, it supplies moisture to the hydraulic composition layer VC, and the pH of the same layer is Q Merano 1 Ru 1, and the cement mortar is Portland cement. A mixture of cement sand and water with a volume ratio of cement to sand of 1 = 2 to 1.4 is used. Of course, it is also permissible to mix with these commonly used mortar admixtures such as water agents, water retention agents, supplementary materials, anti-crack agents, synthetic resin emulsions, and Muratex. The system of planutato is made of drawphyte plus goo and plaster.

The T-1 method is carried out by a conventional method such as troweling or spray painting. Its coating thickness is several mm to 2 to 3 crt
It's t or 1 near j. At the same time as the wall coating begins to harden due to the coating, the water on the base plate (1
9-weight compositions also begin to harden again 1, these hardening d
dproceeds rapidly for 2 to 4 weeks, and thereafter gradually 1(.And when both are cured, crystals of the hydraulic composition and >,7;l:,i° crystals at the interface. Z,1
, In this way, VC L is 11" 1 cladding wall d using the conventional construction method: [Compared to painted walls, it has excellent features such as strong eyelids, excellent waterproofing, and less occurrence of cranks. have. In addition, the Toρ painting wall construction method allows the production of the lower 1-ply board in a factory, which means that it can be obtained as a homogeneous coating material, that it is easy to construct the base on site, and that it simplifies the process and shortens the construction period. This is an extremely useful construction method in practice, as it can be shortened.

The present invention will be described below in more detail in Example R (although the present invention is not limited to these unless the gist thereof is changed).

Example 1 Plywood (Juchen Kapor ＼thickness 7.5 mm, 5 ply for cotton construction)
A styrene acrylic emulsion (solid content 57%) was applied as a waterproofing agent in an area of 12,097 m2 using a roll coater, and dried at 60°G for 20 minutes.

Next, 80 parts of granulated blast furnace slag, 20 parts of dihydric slag, 25 parts of ordinary Portland cement, 25 parts of styrene-acrylic copolymer emulsion (solid content 57 parts), 1 part of dispersant and other additives. The hydraulic slurry obtained by mixing the water 30:fi meter was coated with a roll coater at a rate of 1.2 #/m20 so that the surface became uneven and rough, and then dried with hot air ( and dried at 80° C. for 1 hour.The hydraulic flrl composition layer of this lower i1+ plate was hardly hydrated.

After nailing the base boards obtained in this way to the pillars, the joints between the V-shaped boards were filled with VC acrylic caulking to make them waterproof, and the base was constructed. . On top of that, pour the mortar obtained by mixing ordinary portolan 1: river sand and water in a volume ratio of 1-3:o, 6:i'il'a; with a trowel to a thickness of about 10 mm. Three weeks after painting, the painted walls were sprayed with synthetic l111 linon coating.

The painted wall obtained in this way is strong and good!
The whole thing has a box-like property, is waterproof, (
:1] It has excellent fire resistance, does not cause cracks, and is very aesthetically pleasing. Also below flaL used 1
It is easy to do and can significantly shorten the construction period. Various exams, exam α'
jl+! The results are shown in Table 1.

, J 2h 11 pieces [9 pieces 2 plywood (wood species: Poitelawan, thickness 7.5 mm, for 5-ply structure) epoxy modified acrylic copolymer emulsion (solid content 40 pieces) was applied as a waterproofing agent using a VC roll coater. /m2-4 parts, applied at 80℃
and dried for 20 minutes.

Next, 80 parts of granulated blast furnace slag, 20 parts by weight of dihydric slag, 25 ft F (1 part) of ordinary Portland cement, and styrene-acrylic copolymer emulsion (solid content 57 parts) were added.
A hydraulic composition slurry obtained by mixing 25 parts by weight), 10 parts by weight of pearlite, 1 part by weight of a dispersant and other additives, and 35 parts by weight of water was coated with a roll coater. k
It was coated at a ratio of g/m2 so that the surface had an uneven surface, and was dried in a hot air dryer at 80'C for 1 hour. The hydraulic composition layer of this base plate is hardly hydrated.

Using the base plate thus obtained, a base plate was constructed in the same manner as in Example 1. From the second step, apply a white portoranod cement-based coating (1'ζ 月 (l), jl, f + ding + m product name: Super Uni Stucco, manufactured by Kenkai Co., Ltd.) with a trowel, and use a roller to create a stucco-like pattern. Okono 1 has a four-dimensional painted wall. In this way −f:)
I) The painted wall was 7tFj, the same as Example 1, and was marked as pine resistant and 119% water and fireproof, but no cracks occurred.

J/Koshita'le/iii I is easy and can significantly shorten Mυj.
Shown in the table.

Table 1: PI of hydraulic composition slurry (: Measured by PH meter PH of surface of hydraulic composition: Sample - Number of 7 days after preparation)
M.I.

Drop a water drop on the surface of the sample and test with Plf test paper 0 river constant 44 (- wall material +JII: Measured with PH meter Adhesion force: Flat tension method ?ll++ constant Water resistance test:
Moisture resistance test after being immersed in water for 30 days, dried at 40'G, and then measured using the flat tension method. Measuring patent applicant Inukura Koto Co., Ltd. agent Patent attorney Ogawa -mi

Claims (1)

[Claims] Underlying substrate, granulated blast furnace slag, slag, pollen, etc.
i゛ A patent for fixing a base plate composed of a granulated blast furnace slag-based hydraulic composition layer made of cement synthetic resin emulsion or rubber latex to a wall structure, and applying an alkaline wall coating material to the surface thereof. Painted wall sister construction method.