Non-fired tiles and methods for manufacturing non-fired tiles

Abstract

This invention provides non-fired tiles and a method for manufacturing non-fired tiles that make it possible to reduce carbon dioxide emissions. [Solution] A fired tile containing 1 to 7 parts by weight of Portland cement (1), 18 to 58 parts by weight of blast furnace slag (2), 57 to 77 parts by weight of a carbon dioxide adsorbent (3) which is a powder containing calcium carbonate derived from calcium compounds that chemically adsorbs carbon dioxide, and 0.1 to 5 parts by weight of organic fiber (4) which is a synthetic fiber called vinylon RMS, is manufactured by sequentially carrying out a mixing process, a molding process, a first drying process, a steam curing process, a second drying process, and a coating process.

Description

Technical Field

[0006] , ,

[0001] The present invention relates to non-fired tiles and a method for manufacturing non-fired tiles. More specifically, the present invention relates to non-fired tiles containing a carbon dioxide absorbent and enabling carbon dioxide reduction, and a method for manufacturing non-fired tiles.

Background Art

[0002] Patent Document 1 describes a hydraulic composition containing calcium carbonate that enables reduction of carbon dioxide emissions, stable retention and storage of carbon dioxide, and improvement of fire resistance, and a wall member formed of this hydraulic composition.

[0003] That is, Patent Document 1 describes a hydraulic composition containing a binder containing at least one of blast furnace slag, an expanding material, and slaked lime, and organic fibers and calcium carbonate, wherein the proportion of the calcium carbonate in the powder is in the range of 8.6% to 45% by mass, more preferably in the range of 33% to 45% by mass. According to such a hydraulic composition, reduction of carbon dioxide emissions is possible, and stable retention and storage of carbon dioxide are possible by using calcium carbonate. In addition, since it contains organic fibers, spalling when exposed to high temperatures can be suppressed.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] [[ID=3[8]] Although the hydraulic composition described in Patent Document 1 can reduce carbon dioxide, it is difficult to apply it to "tiles" used in the construction field.

[0006] In other words, when a non-fired tile is manufactured using a mixed material containing a binder, organic fibers, and calcium carbonate, wherein the proportion of calcium carbonate in the powder is in the range of 33% to 45% by mass, the disadvantage of insufficient strength arises, making it difficult to use as a non-fired tile in practice.

[0007] Therefore, the object of the present invention is to provide non-fired tiles and a method for manufacturing non-fired tiles that can reduce carbon dioxide emissions. [Means for solving the problem]

[0008] The means for solving the problems of the present invention are as follows.

[0009] Firstly, 1 to 7 parts by weight, preferably 3 to 5 parts by weight of Portland cement, 18 to 58 parts by weight, preferably 28 to 48 parts by weight of blast furnace slag, 57 to 77 parts by weight, preferably 47 to 67 parts by weight of carbon dioxide adsorbent, A non-fired tile characterized by containing 0.1 to 5 parts by weight, preferably 0.5 to 2.5 parts by weight, of organic fibers.

[0010] Secondly, 1 to 7 parts by weight, preferably 3 to 5 parts by weight of Portland cement, 18 to 58 parts by weight, preferably 28 to 48 parts by weight of blast furnace slag, A carbon dioxide adsorbent containing 57 to 77 parts by weight, preferably 47 to 67 parts by weight of calcium carbonate component, A non-fired tile characterized by containing 0.1 to 5 parts by weight, preferably 0.5 to 2.5 parts by weight, of synthetic fibers.

[0011] Thirdly, 1 to 7 parts by weight, preferably 3 to 5 parts by weight of Portland cement, 18 to 58 parts by weight, preferably 28 to 48 parts by weight of blast furnace slag, 57 to 77 parts by weight, preferably 47 to 67 parts by weight of carbon dioxide adsorbent, A mixing step of mixing a raw material containing 0.1 to 5 parts by weight, preferably 0.5 to 2.5 parts by weight of organic fiber, with water. A molding process in which the material obtained in the mixing process is molded. The first drying step involves drying the material obtained in the molding process. Steam curing process in which the material obtained in the first drying process is steam cured. The second drying process involves drying the material obtained in the steam curing process. A method for manufacturing non-fired tiles, characterized by sequentially performing a coating step in which the material obtained in the second drying step is coated.

[0012] Here, blast furnace slag is a by-product of steelmaking and contains silica, alumina, calcium oxide, etc., and it is particularly desirable to use Nippon Steel Corporation's Blast Furnace Slag Esment (registered trademark).

[0013] Carbon dioxide absorbents can be used without restriction as long as they are suitable for tile manufacturing even when mixed with blast furnace slag. However, it is particularly desirable to use a powdered material containing calcium carbonate derived from calcium compounds, manufactured by Asahi Soft Drinks Co., Ltd., which chemically adsorbs carbon dioxide.

[0014] Using carbon dioxide absorbent powders with a particle size of 2 mm or less is preferable because it allows for easier and more uniform dispersion of the material.

[0015] Organic fibers are fibers made from organic compounds with carbon as the main component. Natural fibers such as cotton, linen, and wool, as well as synthetic fibers such as nylon, polyester, acrylic, vinylon, and rayon can be used, but vinylon fibers are preferable as synthetic fibers.

[0016] The mixing process is the process of uniformly mixing the raw materials, and can be carried out, for example, by kneading using an omni-mixer. [Effects of the Invention]

[0017] According to the present invention, the following effects can be achieved.

[0018] Since blast furnace slag and a carbon dioxide absorbent are used as main raw materials and organic fibers are mixed at a specific ratio, it is possible to use them as non-fired tiles having practical strength, and it is possible to effectively reduce carbon dioxide.

Brief Description of the Drawings

[0019] [Figure 1] It is an explanatory view of a non-fired tile according to the present invention. [Figure 2] It is an explanatory view of a manufacturing process of a non-fired tile according to the present invention.

Mode for Carrying Out the Invention

[0020] Hereinafter, a mode for carrying out the present invention will be described. Note that since the description here is one mode in which the present invention is implemented, the present invention is not limited to the present mode.

Examples

[0021] The non-fired tile of Example 1 is composed of Portland cement 1, blast furnace slag 2, a carbon dioxide adsorbent 3, and organic fibers 4 as shown in the explanatory view of FIG.

[0022] The weight of Portland cement 1 at the time of powder blending during raw material preparation is 84 g, and the ratio to the entire powder is 4.20% by weight.

[0023] The blast furnace slag 2 is blast furnace slag cement (registered trademark) of Nippon Steel Corporation, and the weight at the time of powder blending during raw material preparation is 764 g, and the ratio to the entire powder is 38.24% by weight.

[0024] Carbon dioxide adsorbent 3 is made by Asahi Soft Drinks Co., Ltd. and contains calcium carbonate derived from calcium compounds. It is in powder form, less than 2 mm in size, and chemically adsorbs carbon dioxide. The weight of the powder when mixed as a raw material is 1130 g, and its proportion to the total powder is 55.56% by weight.

[0025] Organic fiber 4 is a synthetic fiber, vinylon fiber manufactured by Kuraray Co., Ltd., with a weight of 20g in the powder formulation during raw material preparation, representing 1.00% by weight of the total powder. [Examples]

[0026] The non-fired tile of this embodiment 2 is composed of Portland cement 1, blast furnace slag 2, carbon dioxide adsorbent 3, and organic fiber 4, similar to embodiment 1.

[0027] Portland Cement 1 has a powder weight of 84g when mixed as a raw material, and its proportion to the total powder is 4.20% by weight.

[0028] Blast furnace slag 2 is Nippon Steel Corporation's blast furnace slag Esment (registered trademark), with a weight of 764g in the powder formulation during raw material production, representing 38.24% by weight of the total powder.

[0029] Carbon dioxide adsorbent 3 is made by Asahi Soft Drinks Co., Ltd. and contains calcium carbonate derived from calcium compounds. It is in powder form, less than 2 mm in size, and chemically adsorbs carbon dioxide. The weight of the powder when mixed as a raw material is 1130 g, and its proportion to the total powder is 56.56% by weight.

[0030] Organic fiber 4 is hemp, a natural fiber, and its weight in the powder formulation at the time of raw material preparation is 20g, representing 1.00% by weight of the total powder. [Examples]

[0031] The fired tile of this embodiment 3 is composed of Portland cement 1, blast furnace slag 2, carbon dioxide adsorbent 3, and organic fibers 4, similar to embodiment 1.

[0032] Portland Cement 1 has a powder weight of 84g when mixed as a raw material, and its proportion to the total powder is 4.20% by weight.

[0033] Blast furnace slag 2 is Nippon Steel Corporation's blast furnace slag Esment (registered trademark), with a weight of 764g in the powder formulation during raw material production, representing 38.24% by weight of the total powder.

[0034] Carbon dioxide adsorbent 3 is made by Asahi Soft Drinks Co., Ltd. and contains calcium carbonate derived from calcium compounds. It is in powder form, less than 2 mm in size, and chemically adsorbs carbon dioxide. The weight of the powder when mixed as a raw material is 1130 g, and its proportion to the total powder is 56.56% by weight.

[0035] Organic fiber 4 is a mixture of vinylon fiber, a synthetic fiber manufactured by Kuraray Co., Ltd., which weighs 10g in the raw material powder formulation and accounts for 0.50% by weight of the total powder, and hemp, a natural fiber, which weighs 10g in the raw material powder formulation and accounts for 0.50% by weight of the total powder. [Examples]

[0036] Next, we will describe the process of manufacturing non-fired tiles using the formulations from Examples 1 to 3 as raw materials.

[0037] Using the formulations from Examples 1 to 3 as raw materials 1 to 3, respectively, and following the same process and conditions as described below, we manufactured Product 1, Product 2, and Product 3 as fired tiles.

[0038] As shown in Figure 2, the manufacturing process consists of the following steps in sequence: mixing, molding, first drying, steam curing, second drying, and coating.

[0039] [Mixing process] Raw material 1 (1998g) and 650g of water were uniformly mixed using an omnimixer. Raw material 2 (1998g) and 700g of water were uniformly mixed using an omnimixer. Raw material 3 (1998g) and 650g of water were uniformly mixed using an omnimixer.

[0040] [Molding process] Each of the compound products obtained from raw materials 1 to 3 in the mixing process was filled into a mold, and then molded by applying a pressure of 100 tons per square centimeter or more to each compound product in the mold using a hydraulic press.

[0041] [First drying process] Each molded product obtained in the molding process was allowed to cure naturally for more than 10 hours while placed on a curing rack, thereby obtaining a first-dried product from each.

[0042] [Steam curing process] Each of the first dried products obtained in the first drying process was subjected to steam curing according to the following procedure to obtain steam-cured products. After each of the first dried materials is placed in the steam curing chamber, the temperature inside the chamber is gradually raised from room temperature to 70°C over a period of 3 hours. During this process, the humidity should always be kept above 99%. Once the temperature reaches 70°C and the humidity reaches 99% or higher, maintain these conditions for 3 hours. By curing the product in a high-temperature, high-humidity environment in this way, the internal drying process proceeds uniformly, preventing cracking and deformation, and also improving its strength. After holding for 3 hours, the temperature was gradually lowered to 30°C while maintaining a humidity of 99% or higher, thereby obtaining steam-cured materials.

[0043] [Second drying process] Each steam-cured material obtained in the steam curing process was dried by natural drying until its moisture content was 10% or less, yielding two dried materials, each weighing 2.2 kg: 2.2 kg of mortar (Material 1), 2.2 kg of mortar (Material 2), and 2.2 kg of mortar (Material 3).

[0044] [Coating process] Each of the second dried products obtained in the second drying process was coated according to the following procedure to produce products 1 through 3, respectively. First, clean the surface of the second dried object to remove dirt and oil thoroughly in order to improve paint adhesion. Then, apply a water-based acrylic clear paint evenly. At this stage, it's important to apply the paint thinly and evenly to ensure a smooth finish, so use a spray or roller to apply it to the entire surface. After applying the paint, the surface is coated by allowing it to dry for a certain period of time. In this case, although water-based acrylic clear paint dries relatively quickly, it is important to allow sufficient time for it to fully harden. Water-based acrylic clear coating protects the product surface and enhances its abrasion resistance. This helps maintain the product's appearance for a long period of time and reduces wear and damage from use. This process is an essential finishing step to enhance the product's durability and provide protection.

[0045] Through the above series of processes, non-fired tiles were manufactured using product 1, product 2, and product 3, respectively.

[0046] [Test Example 1]

[0047] Each of the test specimens obtained by the above manufacturing process—Second Dried Product 1, Second Dried Product 2, and Second Dried Product 3—was subjected to a bending fracture load test in accordance with JIS A5402. The reason why the second dried product before the coating process is used as the test specimen is that the strength, which is an important quality factor for non-fired tiles, is best measured using the dried product before the coating process.

[0048] The specimen of the second dried product 1 used in the test had a weight of 1948.3 g and a thickness of 11.40 mm. The test specimen of the second dried product used in the test weighed 1871.4 g and had a thickness of 10.99 millimeters. The specimen of the second dried product 3 used in the test had a weight of 1914.7 g and a thickness of 11.60 mm.

[0049] The test results are as follows: The test specimen of the second dried product 1 had a maximum point test force of 926.25 N and a maximum point displacement of 5.40 mm. The test specimen of the second dried product showed a maximum point test force of 457.50 N and a maximum point displacement of 1.05 mm. The test specimen of the second dried product 3 showed a maximum point test force of 678.75 N and a maximum point displacement of 2.93 millimeters.

[0050] The analysis of the test results is as follows: The test specimen of the second dried product 1 is tough, does not break easily even when bent, and possesses sufficient quality as a non-fired tile. The test specimen of the second dried product 2 did not exhibit the same strength as the second dried product 1, but it still possessed the quality of a non-fired tile. The test specimen of the second dried material 3 had greater strength than the second dried material 2, but less strength than the second dried material 1; however, it possessed the quality of a non-fired tile. [Examples]

[0051] As shown in the explanatory diagram in Figure 1, the non-fired tile of this embodiment 5 is composed of Portland cement 1, blast furnace slag 2, carbon dioxide adsorbent 3, and organic fibers 4.

[0052] Portland Cement 1 has a weight of 84g when mixed as a powder during the raw material stage.

[0053] Blast furnace slag 2 is Nippon Steel Corporation's blast furnace slag Esment (registered trademark), with a weight of 764g when mixed as a powder during the raw material stage.

[0054] Carbon dioxide adsorbent 3 is made by Asahi Soft Drinks Co., Ltd. and contains calcium carbonate derived from calcium compounds. It is in powder form, less than 2 millimeters in size, and chemically adsorbs carbon dioxide. Its weight when mixed as a raw material is 1130 g.

[0055] Organic fiber 4 is cotton fiber (rayon), and its weight when mixed as a powder during the raw material stage is 13.7g. [Examples]

[0056] As shown in the explanatory diagram in Figure 1, the non-fired tile of this embodiment 6 is composed of Portland cement 1, blast furnace slag 2, carbon dioxide adsorbent 3, and organic fibers 4.

[0057] Portland Cement 1 has a weight of 84g when mixed as a powder during the raw material stage.

[0058] Blast furnace slag 2 is Nippon Steel Corporation's blast furnace slag Esment (registered trademark), with a weight of 764g when mixed as a powder during the raw material stage.

[0059] Carbon dioxide adsorbent 3 is made by Asahi Soft Drinks Co., Ltd. and contains calcium carbonate derived from calcium compounds. It is in powder form, less than 2 millimeters in size, and chemically adsorbs carbon dioxide. Its weight when mixed as a raw material is 1130 g.

[0060] Organic fiber 4 is a crushed denim product, with a weight of 15.9g when mixed as a powder during the raw material stage. [Examples]

[0061] As shown in the explanatory diagram in Figure 1, the non-fired tile of this embodiment 7 is composed of Portland cement 1, blast furnace slag 2, carbon dioxide adsorbent 3, and organic fibers 4.

[0062] Portland Cement 1 has a weight of 84g when mixed as a powder during the raw material stage.

[0063] Blast furnace slag 2 is Nippon Steel Corporation's blast furnace slag Esment (registered trademark), with a weight of 764g when mixed as a powder during the raw material stage.

[0064] Carbon dioxide adsorbent 3 is made by Asahi Soft Drinks Co., Ltd. and contains calcium carbonate derived from calcium compounds. It is in powder form, less than 2 millimeters in size, and chemically adsorbs carbon dioxide. Its weight when mixed as a raw material is 1130 g.

[0065] Organic fiber 4 is cotton fiber (rayon), and its weight when mixed as a powder during the raw material stage is 20g. [Examples]

[0066] As shown in the explanatory diagram in Figure 1, the non-fired tile of this embodiment 6 is composed of Portland cement 1, blast furnace slag 2, carbon dioxide adsorbent 3, and organic fibers 4.

[0067] Portland Cement 1 has a weight of 84g when mixed as a powder during the raw material stage.

[0068] Blast furnace slag 2 is Nippon Steel Corporation's blast furnace slag Esment (registered trademark), with a weight of 764g when mixed as a powder during the raw material stage.

[0069] Carbon dioxide adsorbent 3 is made by Asahi Soft Drinks Co., Ltd. and contains calcium carbonate derived from calcium compounds. It is in powder form, less than 2 millimeters in size, and chemically adsorbs carbon dioxide. Its weight when mixed as a raw material is 1130 g.

[0070] Organic fiber 4 is a crushed denim product, with a weight of 20g when mixed as a powder during the raw material stage. [Examples]

[0071] Next, we will describe the process of manufacturing non-fired tiles using the formulations of Example 1 and Examples 5 to 8 as raw materials.

[0072] The formulations from Example 1 and Example 5 to Example 8 were used as raw material 1 and raw material 5 to raw material 8, respectively. The mixing process, molding process, first drying process, steam curing process, second drying process, and coating process were carried out sequentially under the same conditions as in Example 4, except for the mixing process, to obtain fired tiles 1', 5, 6, 7, and 8, respectively.

[0073] [Mixing process] Raw material 1 (1998g) and 700g of water were uniformly mixed using an omnimixer. A mixture of raw material 5 (1991.7g) and 750g of water was mixed with a softening agent consisting of 100g of water, 10g of Smoother HV to improve fiber dispersibility during kneading, and 1g of Tasupmit ARL 250%, and then uniformly kneaded using an omni mixer. A mixture of raw material 6 (1993.9g) and 750g of water was mixed with a softening agent consisting of 100g of water, 10g of Smoother HV to improve fiber dispersibility during kneading, and 1g of Tasupmit ARL 250%, and then uniformly kneaded using an omni mixer. A mixture of raw material 7 (1998g) and 550g of water was mixed with a softening agent consisting of 300g of water, 10g of Smoother HV to improve fiber dispersibility during kneading, and 1g of Tasupmit ARL 250%, and then uniformly kneaded using an omni mixer. A mixture of raw material 8 (1998g) and 550g of water was mixed with a softening agent consisting of 300g of water, 10g of Smoother HV to improve fiber dispersibility during kneading, and 1g of Tasupmit ARL 250%, and then uniformly kneaded using an omni mixer.

[0074] Subsequently, in the same manner as in Example 4, the molding process, first drying process, steam curing process, and second drying process were carried out sequentially to obtain second dried product 1', second dried product 5, second dried product 6, second dried product 7, and second dried product 8, each weighing 2.5 kg of mortar.

[0075] [Test Example 2]

[0076] Using the second dried product 1', second dried product 5, second dried product 6, second dried product 7, and second dried product 8 obtained through the above manufacturing process as test specimens, a bending fracture load test in accordance with JIS A5402, similar to that in Test Example 1, and a drop ball test were conducted on each of the half-broken pieces obtained from the bending fracture load test by dropping a 500g steel ball from a height of 150 centimeters to test their impact resistance. In this process, the second dried product 1', second dried product 5, and second dried product 6 were each tested using three test specimens (A, B, C) manufactured under identical conditions.

[0077] Here, the specimen of the second dried product 1'A had a weight of 2013.6 g and a thickness of 12.7 millimeters. The specimen of the second dried product 1'B had a weight of 2034.0 g and a thickness of 12.8 mm. The specimen of the second dried product 1'C had a weight of 2037.9 g and a thickness of 12.9 mm. On average, the specimens of the second dried product 1' weighed 2028.5 g and had a thickness of 12.8 millimeters.

[0078] The test specimen of the second dried product 5A had a weight of 2124.2 g and a thickness of 13.0 mm. The test specimen of the second dried product 5B had a weight of 2070.2 g and a thickness of 13.0 mm. The specimen of the second dried product 5C had a weight of 2069.4 g and a thickness of 13.0 mm. On average, the specimens of the second dried product 5 weighed 2087.9 g and had a thickness of 13.0 millimeters.

[0079] The test specimen of the second dried product 6A had a weight of 2132.6 g and a thickness of 13.0 mm. The test specimen of the second dried product 6B had a weight of 2073.7 g and a thickness of 13.1 millimeters. The specimen of the second dried product 6C had a weight of 2058.6 g and a thickness of 13.2 millimeters. On average, the specimens of the second dried product 5 weighed 2088.3 g and had a thickness of 13.1 millimeters.

[0080] The test specimen of the second dried product 7 had a weight of 1983.5 g and a thickness of 13.0 millimeters. The test specimen of the second dried product 8 had a weight of 1963.5 g and a thickness of 13.0 millimeters.

[0081] The results of the bending fracture load test are as follows:

[0082] The test specimen of the second dried product 1'A had a maximum point test force of 1044.00 N and a maximum point displacement of 5.579 mm. The test specimen of the second dried product 1'B had a maximum point test force of 934.50 N and a maximum point displacement of 5.296 mm. The test specimen of the second dried product 1'C had a maximum point test force of 1198.00 N and a maximum point displacement of 6.000 mm. On average, the specimen of the second dried material 1' had a maximum point test force of 1058.83 N and a maximum point displacement of 5.625 mm.

[0083] The test specimen of the second dried product 5A had a maximum point test force of 434.00 N and a maximum point displacement of 1.844 mm. The test specimen of the second dried product 5B showed a maximum point test force of 632.50 N and a maximum point displacement of 2.046 mm. The test specimen of the second dried material 5C showed a maximum point test force of 555.50 N and a maximum point displacement of 2.153 mm. On average, the second dried specimen 5 had a maximum point test force of 540.67 N and a maximum point displacement of 2.014 mm.

[0084] The test specimen of the second dried product 6A showed a maximum point test force of 516.50 N and a maximum point displacement of 1.994 mm. The test specimen of the second dried product 6B showed a maximum point test force of 573.50 N and a maximum point displacement of 2.306 mm. The test specimen of the second dried product 6C showed a maximum point test force of 517.50 N and a maximum point displacement of 2.390 mm. On average, the second dried specimen 6 had a maximum point test force of 535.83 N and a maximum point displacement of 2.230 mm.

[0085] The test specimen of the second dried product 7 had a maximum point test force of 710.00 N and a maximum point displacement of 2.283 millimeters. The test specimen of the second dried product 8 had a maximum point test force of 775.50 N and a maximum point displacement of 2.527 mm.

[0086] The results of the ball drop test are as follows:

[0087] The test specimens (A, B, C) of the second dried product 1' all only slightly dented and did not crack. In all of the test specimens (A, B, C) of the second dried product 5, cracks were observed in the two-part state. In all three test specimens (A, B, C) of the second dried product 6, cracks were observed in the three-part state. Cracks were observed in the test specimen of the second dried product, 7. A small crack was observed in the second dried sample, sample 8.

[0088] The test results can be summarized as follows: The results of the bending fracture load test showed that each specimen had sufficient bending strength as a non-fired tile. In particular, specimen (1') made of vinylon fiber as the organic fiber showed a high value against the bending fracture load, indicating sufficient strength. The results of the ball drop test showed that the test specimen (1') made of vinylon fiber as the organic fiber did not crack at all, indicating high impact resistance and confirming its particular suitability as a non-fired tile. Furthermore, it was confirmed that the test specimens made of denim fibers (6,8) were superior in strength and preferable to the test specimens made of rayon fibers (5,7). [Explanation of Symbols]

[0089] 1. Portland cement 2. Blast furnace slag 3. Carbon dioxide adsorbent 4 Organic Fibers

Claims

1. 1 to 7 parts by weight of Portland cement, 18 to 58 parts by weight of blast furnace slag, 57 to 77 parts by weight of carbon dioxide adsorbent, A non-fired tile characterized by containing 0.1 to 5 parts by weight of organic fibers.

2. 1 to 7 parts by weight of Portland cement, 18 to 58 parts by weight of blast furnace slag, A carbon dioxide adsorbent containing 57 to 77 parts by weight of calcium carbonate, A non-fired tile characterized by containing 0.1 to 5 parts by weight of synthetic fibers.

3. 1 to 7 parts by weight of Portland cement, 18 to 58 parts by weight of blast furnace slag, 57 to 77 parts by weight of carbon dioxide adsorbent, A mixing step of mixing a raw material containing 0.1 to 5 parts by weight of organic fiber with water. A molding process in which the material obtained in the mixing process is molded. The first drying step involves drying the material obtained in the molding process. Steam curing process, in which the material obtained in the first drying process is steam cured. The second drying process involves drying the material obtained in the steam curing process. A method for manufacturing non-fired tiles, characterized by sequentially performing a coating step in which the material obtained in the second drying step is coated.

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