JP2794468B2 - Surface finishing method for concrete-based artificial stone products - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an improvement in a surface finishing method for a concrete-based pseudo stone product.

[Prior Art] Concrete-based pseudo-stone products such as pseudo-stone tiles and pseudo-stone blocks consist of decorative aggregates called ordinary concrete seeds and cement paste or mortar, or the above materials are placed on the back layer of a concrete block. The surface layer is thus formed, and the surface thereof is subjected to a washing process by washing with water or a polishing finish using a fixed abrasive such as a whetstone, an industrial diamond, or a hitting finish using a shot blast, or a composite finish using them. Often.

[Problem to be Solved by the Invention] Polished concrete-based pseudo stone products have excellent appearance and stain resistance due to their luster, but they are easy to slip, especially dangerously slippery when wet in rainy weather. There was a problem. The beating and washing finishes have a beautiful appearance due to the surface shape and there is no risk of slipping even in rainy weather, but the surface is jagged and it is difficult to remove dirt, so it is inferior in stain resistance and the luster of the seed stone is significantly reduced There was a problem.

Therefore, there has been a demand for a concrete-based pseudo stone product which has good but not bad points of the washing finish, the polished finish and the hitting finish.

The present invention is intended to meet this demand, and has an object to provide a concrete-based pseudo-stone product that has no danger of slipping even in rainy weather, has a glossy surface shape, and has excellent stain resistance. Is to provide a law.

[Means for Solving the Problems] In order to achieve the above object, the present invention employs:
Wet brushing with a synthetic resin brush containing abrasive grains directly on the surface of the surface layer consisting of seed stone and cement paste or mortar, or dry or wet brushing with a metal wire brush, or washing or polishing the surface, Or, after performing a beating finish or a composite finish thereof, further performing wet brushing with a synthetic resin brush containing abrasive grains or dry or wet brushing with a metal wire brush.

When the seed stone is hard crushed stone and pea gravel, for example, mineral hardness 4 or more such as granite, serpentine, hard sandstone, slate, artificial aggregate, etc., it is harder than mortar, so it is not necessary to consider the setting time of mortar No, but limestone with mineral hardness less than 4,
In the case of soft crushed stone such as artificial aggregates and pea gravel, brushing is performed while the mortar is softer than limestone or the like.

 The composition of the surface layer is as follows.

Ordinary white Portland cement: 200 to 700 parts by weight, seed stone particle size 1 to 30 mm: 200 to 3000 parts by weight, fine aggregate (silicic acid, carbonic acid, sulfuric acid, etc.) particle size 0.01 to 3 mm: 0 to 700 parts by weight ， Water: 50〜5
00 parts by weight [Action] When the concrete pseudo stone product is polished,
The surface of the seed and the mortar are flush, but if this is wet brushed with a synthetic resin brush containing abrasive grains or dry or wet brushed with a metal wire brush, the mortar around the seed on the surface will be Since the surface is shaved to produce irregularities, the surface shape becomes an attractive appearance. Also, since the surface of the seed stone and the mortar becomes smooth, it is not shiny but has the same luster as the polished surface. Furthermore, since it is smooth, mud and dust hardly adhere to it, and it has excellent contamination resistance. Since the surface is uneven, there is no danger of slipping even in rainy weather.

When the mortar is finished by tapping, the surface of the mortar is higher or lower than the seed stone, and the surface is jagged, but this is wet brushing with a synthetic resin brush containing abrasive grains or dry or wet brushing with a metal wire brush After finishing the mortar, the mortar is shaved and the seed stone emerges, adding the same luster to the polished surface as the polished finish. In addition, since the surfaces of the seed stone and the mortar become smooth with the unevenness, the mud and dust hardly adhere thereto and the stain resistance is also excellent. Since the surface is uneven, there is no danger of slipping in rainy weather.

When concrete-based artificial stone products are washed out and finished,
The seed stone and the mortar surface are jagged because the seed stone protrudes from the mortar surface, but depending on the seed stone, the cracked skin is often not smooth and lacks luster. When this is subjected to wet brushing with a synthetic resin brush containing abrasive grains or dry or wet brushing with a metal wire brush, the mortar is shaved and a seed stone emerges, giving a quaint surface shape the same luster as the polished finish. In addition, since the surfaces of the seed stone and the mortar become smooth with the unevenness, the mud and dust hardly adhere thereto and the stain resistance is also excellent. Since the surface is uneven, there is no danger of slipping in rainy weather.

The surface after being exposed is covered with mortar, but if wet or dry brushing with a metal wire brush or wet brushing with a synthetic resin brush containing abrasive grains is applied, the mortar around the seed stone is shaved and the seed stone is removed. The surface of the obtained concrete-based pseudo-stone product becomes interesting because it emerges. In addition, although the surface has irregularities, since each surface is smooth, it has the same gloss as a polished finish, and mud and dust are unlikely to adhere. Since there are irregularities on the surface, there is no danger of slipping on rainy days.

[Examples] The method of the present invention will be specifically described based on examples.

Example 1 As shown in FIG. 1, a surface layer 20 having the following composition was provided on a concrete backing layer 10 to form a tile. After being released, they were cured outdoors for one week.

However, as for the washing out, it was treated with a mortar retarder, washed out the next day and then cured outdoors for one week.

White Portland Cement 450Kg Granite Particle Size 5-10mm 1200Kg Calcium Carbonate Particle Size 0.1-0.3mm 380Kg Water 250Kg This tile is given the following different finishes to give four types of finished products A, B, C and D of the present invention. Conventional products E, F and G were obtained.

A: After conventional polishing with fixed abrasive, wet brushing with synthetic resin brush containing abrasive grains B: After hitting finish with shot blasting, wet brushing with synthetic resin brush with abrasive grains C: After washing finish, containing abrasive grains Wet brushing with synthetic resin brush D: Wet brushing with synthetic resin brush containing abrasive grains E: Conventional polishing finish with fixed abrasive F: Conventional hitting finish with shot blast G: Conventional wash finish Carborundum 35
A commercially available rotary hollow circular brush (outer diameter: 430 mm, inner diameter: 350 mm, brush length: 30 mm, rotation number: 460 rpm, 920 rpm) composed of a 1 mm diameter polyamide polishing yarn containing 0.1% by weight was used.

As shown in FIG. 1, finished products A, B, C and D of the present invention
Compared to the polished conventional finish E, the surface is not smooth, and the mortar 24 around the granite grains 22 is shaved and uneven, so the surface shape is interesting, and the unevenness makes it slippery in rainy weather Also prevented. Also, since the surface of the granite grains 22 is polished, the surface is not shiny, but the conventional finished product F or G that has been hit or washed out.
There is considerable luster compared to. Since the surface of the mortar 24 is also brushed, the surface is smooth, and dirt and dust are hardly adhered. Even if it adheres, the mortar 24 can be easily washed away with water, so that the mortar 24 is also excellent in stain resistance.

Although there is not much difference between the finished products A, B, C, and D of the present invention, it is considered that A is smoother, B or C is less slippery, and D is more cost effective than others.

Example 2 The same tile as in Example 1 was used, and dry and wet brushing were performed using a metal wire brush instead of the synthetic resin brush of Example 1. As a metal wire brush,
A commercially available product of the same shape and size as the synthetic resin brush of Example 1 was used. The finished tile is the finished product A of the present invention of Example 1,
It was almost the same as B, C, and D.

Example 3 A tile was formed by providing a surface layer having the following composition on a concrete main layer.

White Portland cement 450Kg Limestone particle size 5-10mm 1200Kg Calcium carbonate particle size 0.1-0.3mm 380Kg Water 250Kg The curing period after exposure is shortened, and the same finishing as in Example 1 is performed before the mortar becomes harder than limestone. Thus, three types of finished products of the present invention and three types of conventional finished products were obtained. As in Example 1, the finished product of the present invention has less unevenness on the surface than a conventional polished product, so that it has less slippage in rainy weather,
Since the surface shape is interesting, the surface of the limestone grains in the convex portions and the surface of the mortar in the concave portions are smoother than those of the conventional hitting finish, so that mud and dust are less likely to adhere thereto and have excellent contamination resistance.

[Effects of the Invention] As described above, the finishing method of the present invention is different from the conventional methods such as a polished finish that is slippery in rainy weather, a washing finish or a hitting finish in which mud and dust easily adhere, and the like, so that the seeds of the pseudo stone surface can be brushed. The mortar around the stone is shaved to extrude the seed stone, which creates quaint irregularities on the surface.The irregularities prevent slipperiness in rainy weather, etc., but the surface is smooth. Since it has the same luster and does not easily adhere to mud and dust, it has excellent contamination resistance.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view schematically showing the condition of the surface of a concrete pseudo-stone tile finished by the method of the present invention and the conventional method. In the figure, reference numeral 10 indicates a back layer, 20 indicates a surface layer, 22 indicates a granite grain (seed stone), and 24 indicates a mortar.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E01C 7/35 E01C 5/06

Claims (5)

(57) [Claims] 1. A pseudo-stone product having a surface layer composed of a seed stone and a cement paste or mortar, wherein after being exposed, the surface is washed out with water or polished with a solid abrasive.
Or after hitting by shot blasting, or after combined processing of polishing and hitting, by applying wet brushing to the surface with a synthetic resin brush containing abrasive grains, it is difficult to slide due to unevenness, stain resistance and tasteful gloss Surface finishing method for concrete-based artificial stone products, characterized by finishing on a rough surface. 2. A pseudo-stone product having a surface layer composed of a seed stone and a cement paste or mortar. The surface is subjected to wet brushing with a synthetic resin brush containing abrasive grains after being exposed, so as to prevent slippage due to unevenness and contamination resistance. A surface finishing method for concrete-based pseudo stone products, characterized by finishing the surface with a subtle luster. 3. A pseudo-stone product having a surface layer composed of a seed stone and a cement paste or mortar, wherein after being exposed, the surface is washed out with water or polished with a solid abrasive.
Or, after the hitting process by shot blasting or the combined process of polishing and tapping, by applying dry or wet brushing to the surface with a metal wire brush, the surface with the slip resistance due to unevenness, stain resistance and quaint gloss A surface finishing method for concrete pseudo stone products characterized by finishing. 4. A pseudo-stone product having a surface layer composed of a seed stone and a cement paste or mortar, the surface of which is subjected to dry or wet brushing with a metal wire brush after being exposed, so as to prevent slippage due to unevenness and contamination resistance. A surface finishing method for concrete-based pseudo stone products, characterized by finishing the surface with a subtle luster. 5. The method according to claim 1, wherein when the seed stone is soft, the dry or wet brushing is performed before the surface mortar becomes harder than the seed stone. Surface finishing method for concrete-based artificial stone products.