KR20110000441A - Alkall-activated masonry products with no cement - Google Patents

Abstract

PURPOSE: Cement-free alkali-activated masonry products with no cement is provided to secure stable strength, workability and durability through the control of alkali-aggregate reaction, quick curing, and strength. CONSTITUTION: Cement-free alkali-activated masonry products include raw materials containing at least one of blast furnace slag, fly ash and metakaolin, a cement-free alkali-activated binder containing Na-free alkaline inorganic material, a fine aggregate including at least one of sand, waste molding sand, stone flour or artificial light light-weight aggregate, and water.

Description

Cemented Alkali-Activated Masonry Products {ALKALL-ACTIVATED MASONRY PRODUCTS WITH NO CEMENT}

The present invention relates to a masonry product using a cement-based alkali binder, more specifically, raw materials containing any one or more of blast furnace slag, fly ash or metakaolin as a substitute for cement, an inorganic material containing no sodium and / or sodium alkaline The present invention relates to an alkali active masonry product comprising a cementless alkali active binder comprising an inorganic material.

In general, the brick or block used in the construction industry is composed by combining the binder and fine aggregate or the binder and aggregate with water, wherein the binder used is generally Portland cement.

The cement is powdered by mixing the raw materials containing silica, alumina, and lime in an appropriate ratio, and adding a portion of gypsum to a molten and sintered clinker to form a powder. Since it must be melted at a high temperature of 1450 ° C., it consumes a large amount of energy (about 30 to 35 l / ton of oil). In addition, it is known to produce about 700 to 870 Kg of carbon dioxide only by chemical reaction of limestone and silicic acid to produce one ton of cement.

As a result, concrete manufacturers around the world are striving to reduce the amount of cement used to reduce the emissions of about 0.8 tonnes of carbon dioxide in the production of one tonne of Portland cement.

As part of this effort, various studies on cement-alkali-active binders to replace cement have been conducted. In particular, Korean Patent Application No. 2007-65185 discloses blast furnace slag; And an alkaline inorganic material including sodium, wherein the alkaline inorganic material is at least one of sodium silicate and liquid water glass, and the weight ratio of sodium to blast furnace slag included in the alkaline inorganic material is 0.038 to 0.088. In addition, the weight of the sodium-based discloses a cement-based alkaline active binder, characterized in that the value converted to Na ₂ 0.

In addition, Korean Patent Application No. 2008-19498 discloses a cement-based alkali activated brick including the cement-based alkali active binder in place of cement, and the binder of the cement-based alkali-activated masonry product invented as described above is a blast furnace. By adding alkali stimulants such as sodium silicate, powdered sodium hydroxide, liquid water glass and liquid sodium hydroxide to industrial by-products such as slag, fly ash and metakaolin, it has advantages such as early strength expression and low hydration heat release.

However, the use of an alkali active stimulant such as sodium silicate may not only cause quenching and alkali aggregate reactions, but also cause deterioration of performances such as local destruction of members and whitening of cracks due to alkali aggregate reactions.

In addition, there is a problem that the strength tends to decrease with the increase in the amount of sodium silicate used, in particular the use of sodium silicate is a cause of strength degradation in aquatic curing.

Accordingly, there is a need for development of masonry product manufacturing technology capable of controlling alkali aggregate reaction and enabling more stable workability and strength expression.

The present inventors have made efforts to solve all the disadvantages and problems of the prior art as described above to complete the present invention by developing a new composition of the composition to control and improve the performance of the product.

Accordingly, an object of the present invention is to reduce the total amount of Na or Na ₂ O by using no sodium-based alkaline inorganic material or to reduce the amount of alkali, so that the total amount of alkali is used since an alkali-active binder having a composition effective in controlling the alkali-aggregate reaction is used. It is to provide Cement Alkali-activated masonry products that are free from the regulation and are very easy to produce and use.

Another object of the present invention is superior economical than when using a cement-based alkali active binder containing only conventional sodium-based alkaline inorganic material, while improving the compressive strength of the masonry product, and has a characteristic that the strength is stably expressed strength It is to provide masonry products.

Still another object of the present invention is to provide a lightweight or ultra-light weight product having appropriate strength while using artificial lightweight aggregate as fine aggregate.

It is still another object of the present invention to have improved workability through the control of the rapid phenomena in the manufacture of masonry products compared to the use of the cement-based alkali-active binder containing only conventional sodium-based alkaline inorganic materials, thereby improving productivity. It is to provide masonry products.

The objects of the present invention are not limited to the above-mentioned objects, and other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, the present invention is a cement-based alkaline active binder comprising a raw material containing any one or more of blast furnace slag, fly ash and metakaolin and sodium-free alkaline inorganic material; Fine aggregate including at least one of sand, waste foundry sand, stone powder or artificial light aggregate; And water; provides a cement-based alkaline active masonry product comprising a.

In a preferred embodiment, the cementless alkaline active binder comprises 0.5 to 20 parts by weight of the sodium-free alkaline inorganic material per 100 parts by weight of the raw material.

In a preferred embodiment, the sodium free alkaline inorganic material is at least one of calcium hydroxide, barium hydroxide or gypsum.

In a preferred embodiment, the calcium hydroxide is contained 0.5 to 15 parts by weight per 100 parts by weight of the raw material.

In a preferred embodiment, the barium hydroxide is contained 0.5 to 5 parts by weight per 100 parts by weight of the raw material.

In a preferred embodiment, the gypsum is 0.5 to 5 parts by weight per 100 parts by weight of the raw material.

In a preferred embodiment, the cementless alkaline active binder further comprises a sodium-based inorganic material comprising any one or more of sodium silicate, sodium sulfate, powdered sodium hydroxide, liquid water glass and liquid sodium hydroxide.

In a preferred embodiment, the weight ratio of Na or Na ₂ O to the raw material contained in the sodium-based alkaline inorganic material in the alkali active binder is 0.005 to 0.14.

In a preferred embodiment, when the raw material is blast furnace slag, the weight ratio of Na or Na ₂ O to the raw material contained in the sodium-based alkaline inorganic material is 0.005 to 0.088.

In a preferred embodiment, when the raw material is a fly ash, the weight ratio of Na or Na ₂ O to the raw material contained in the sodium-based alkaline inorganic material is 0.088 to 0.14.

In a preferred embodiment, the cementless alkali activated masonry is prepared by steam curing at a temperature below 65 ° C.

The present invention has an excellent effect as follows.

Cementium alkali active masonry products of the present invention can be used to reduce the total amount of Na or Na ₂ O by using no sodium-based alkaline inorganic material or the amount of use thereof is reduced, the use of an alkali active binder having a composition effective in controlling the alkali-aggregate reaction Therefore, it is free from the regulation of the total amount of alkali, and its production and use are very easy.

In addition, the cement-based alkali-activated masonry product of the present invention not only reduces the production cost of the masonry product compared to the use of the cement-based alkali-activated binder containing only conventional sodium-based alkaline inorganic material, but also the alkali aggregate reaction, quenching and strength expression characteristics. It is possible to improve the performance, such as better, more stable strength, low heat of hydration reaction, high chemical resistance, high freeze-melting resistance, excellent fire resistance, low inelastic deformation, the bearing wall of masonry building and general concrete or steel It can be effectively used for the curtain wall of a building.

In addition, the cement-based alkali-activated masonry products of the present invention can provide a lightweight or ultra-lightweight masonry products because they provide the appropriate strength while using artificial lightweight aggregates as fine aggregates.

In addition, the cement-based alkali-activated masonry product of the present invention has excellent workability during manufacturing through the performance control of the masonry product compared to the use of the cement-based alkali-active binder containing only conventional sodium-based alkaline inorganic material, thereby improving productivity. .

The terms used in the present invention were selected as general terms as widely used as possible, but in some cases, the terms arbitrarily selected by the applicant are included. In this case, the meanings described or used in the detailed description of the present invention are considered, rather than simply the names of the terms. The meaning should be grasped.

Hereinafter, the technical structure of the present invention will be described in detail with reference to preferred embodiments shown in the accompanying drawings.

However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Like reference numerals designate like elements throughout the specification.

First, the masonry product used in the present invention is a collective name for all products used in the masonry structure of the building, including blocks, bricks.

In addition, the present invention relates to a cement-based alkali-activated composite product using a cement-based alkali-active binder capable of replacing cement without using cement, and in particular, comprising at least one of blast furnace slag, fly ash, or metakaolin. It includes raw materials and sodium-free alkaline inorganic materials, which have technical features.

That is, although the conventional cemented alkali-active binder used only sodium-based inorganic materials such as sodium silicate, powdered sodium hydroxide, liquid water glass, and liquid sodium hydroxide, the present invention does not use any sodium-based inorganic material and does not use sodium-based inorganic materials. By using only or using a combination of sodium-based inorganic material and non-sodium-based inorganic material, it has a composition effective to control the alkali-aggregate reaction, and also has a cement-based alkaline active masonry product having better performance characteristics including stability of workability and strength. Because it provides.

In addition, when only sodium-free inorganic materials are used without using any sodium-based inorganic materials, or when sodium-based inorganic materials and sodium-free inorganic materials are used together, sodium-based inorganic materials are considerably higher in price. Sodium-free inorganic materials are low in cost, so the production cost is reduced and the economy is very excellent. Especially in sodium-based inorganic materials, sodium sulfate is significantly cheaper than other sodium-based inorganic materials, so the economy is excellent.

Therefore, when looking at the Cemental alkali active binder used in the present invention in detail, it can be seen that the Cemental alkali active binder used in the present invention includes a raw material and an alkaline inorganic material.

The raw material includes at least one of blast furnace slag, fly ash, or meta-kaolin, and the alkaline inorganic material includes at least one of calcium hydroxide, barium hydroxide or gypsum. It may be a sodium-free inorganic material, or may be a composition of any one or more sodium-based alkaline inorganic material and sodium-free inorganic material of sodium silicate, sodium sulfate, powdered sodium hydroxide, liquid water glass and liquid sodium hydroxide.

Here, the calcium hydroxide contained in the cementless alkali active binder is preferably 0.5 to 15 parts by weight per 100 parts by weight of the raw material, the barium hydroxide is preferably 0.5 to 5 parts by weight per 100 parts by weight of the raw material, the gypsum is the raw material 100 It is preferable that it is 0.5-5 weight part per weight part. Including such a non-sodium-containing inorganic material in such a weight ratio not only can control the alkali aggregate reaction while ensuring the appropriate strength required for the masonry product, but also excellent workability due to the control of the rapid phenomena.

In addition, in the case where the cementless alkaline active binder further comprises a sodium-based alkaline inorganic material, that is, a composition of a sodium-based alkaline inorganic material and a sodium-free inorganic material, Na or Na ₂ O to the raw material included in the sodium-based alkaline inorganic material The weight ratio of is to be blended so as to be within the range of 0.005 to 0.14, the compounding ratio is the optimal ratio considering the advantage because the strength is excellent but the workability becomes worse when the content of Na or Na ₂ O in the masonry product increases. In addition, the weight ratio of such sodium-based raw materials determines the mechanical properties such as fluidity, strength and dry shrinkage of the cementless alkali activated brick or block of the present invention.

In the weight ratio of Na or Na ₂ O to the raw materials included in the sodium-based alkaline inorganic material of the examples described below, all of the sodium-based weights were used in terms of the weight of Na ₂ O.

That is, the sodium inorganic silicate, sodium sulfate, powdered sodium hydroxide, liquid water glass and liquid sodium hydroxide may be present in the sodium inorganic material, such as Na or Na ₂ O, which is calculated by weight of Na ₂ O and converted. It was.

Therefore, in the present invention, when the weight of sodium system is present as Na ₂ O, the weight was used as it is, and the weight of sodium system in another form was used to convert the weight of Na ₂ O.

It is desirable to determine the use and content of sodium-free inorganic materials and the type and content of sodium-containing inorganic materials in order to obtain cement-based alkali-activated masonry products with improved strength, workability and economy. When the inorganic material is included in the range of 0.5 to 20 parts by weight per 100 parts by weight of raw materials, and at the same time further contains an appropriate amount of sodium-based alkaline inorganic material, it is possible to produce an masonry product with improved strength, workability and economic efficiency.

In this case, when the raw material and the alkaline inorganic material (sodium-free inorganic material and sodium-based alkali inorganic material) are mixed, the weight of the sodium-based alkaline inorganic material is determined so that the weight ratio of the sodium-based raw material can be properly adjusted. When the raw material is blast furnace slag, it is preferable to adjust the amount of the sodium-based alkaline inorganic materials so that the weight ratio of the sodium-based raw material is in the range of 0.005 to 0.088.

In addition, when the raw material is fly ash or metakaolin, it is preferable to adjust the amount of the sodium-based alkaline inorganic materials so that the weight ratio of the sodium-based raw material is in the range of 0.088 to 0.14.

When the sodium-based alkaline inorganic materials mixed with the cement-based alkali active binder contain the liquid sodium hydroxide, it is preferable to use a sodium hydroxide solution of 8 to 16 M.

The fine aggregate included in the preparation of the masonry product of the present invention includes one or more of artificial lightweight aggregate, sand or stone powder. The artificial lightweight aggregate preferably has a specific gravity of 1.2 or less.

Sand or stone powder contained in the fine aggregate is preferably a maximum diameter of 10mm or less, specific gravity of 2.5 or more, more preferably sand has a maximum diameter of 5mm or less, stone powder is 8mm or less. The artificial light weight aggregate contained in the fine aggregate has an internal void, unit volume weight is 300kg / ㎥ to 800kg / ㎥, it is preferable to use a maximum diameter of 10mm or less.

The artificial light aggregate may be a fine aggregate artificially produced by using a ceramic as a main material, for example, when using any one or more of clay, volcanic ash, clinker and fly ash as artificial light aggregate, clay, volcanic ash, By expanding the clinker and the fly ash to have internal voids, it is possible to have a unit volume weight of the artificial lightweight aggregate described above.

As a result, when the fine aggregate using only artificial lightweight aggregate or sand or stone powder in the artificial lightweight aggregate in an appropriate ratio, it is possible to manufacture a lightweight or ultralight cementless alkali activated masonry product.

1 is a photograph showing the shape of the cement-based alkali-activated product of the present invention, Figure 2 is a graph showing the compressive strength of the cement-based alkali-activated product 1 to 6 according to Examples 1 to 6 of the present invention, Figure 3 is a graph showing the absorption rate of Cemented Alkali-Active Composite products 1 to 6 according to Examples 1 to 6 of the present invention.

Examples 1 to 5 of the following embodiments of the present invention have been described by illustrating a general brick, Examples 6 to 11 described a light brick and a block, but are manufactured in various shapes and dimensions shown in FIG. The present invention is not limited thereto, and the content of water and fine aggregates in the manufacture of the masonry products may be appropriately used by those skilled in the art in terms of known content ratios.

In addition, "GGBS" as used in the following description refers to finely ground blast furnace slag powder (Ground Granulated Blast Furance Slag).

Example 1

In order to prepare bricks in the masonry, the components and the blending amounts shown in Table 1 were prepared. The cement-based alkali-active binder includes GGBS and calcium hydroxide, and about 5 parts by weight of calcium hydroxide was used per 100 parts by weight of raw materials. The masonry product 1 is a mixture of Cement Alkali-active binders (GGBS, calcium hydroxide), fine aggregates and water of the contents shown in Table 1 uniformly stirred and compactly filled, such as vibration compression through a known method to form a brick of the desired shape It is produced by steam curing in a curing room below 65 ℃. At this time, the prepared cement-based alkaline activated masonry product 1 was a brick having a length of 190 ± 2mm, a width of 90 ± 2mm, and a height of 57 ± 2mm.

Example 2

Except that the mixing ratio as shown in Table 2 was used to prepare the crude product 2 in the same manner and dimensions as in Example 1, the cement-based alkali active binder used in the crude product 2 contains GGBS and calcium hydroxide, calcium hydroxide is a raw material About 10 parts by weight per 100 parts by weight was used.

Example 3

Except that the mixing ratio as shown in Table 3 was used to prepare the crude product 3 in the same manner and dimensions as in Example 1, the cement-based alkaline active binder used in the crude product 3, including GGBS, calcium hydroxide and sodium silicate, About 5 parts by weight of calcium hydroxide was used per 100 parts by weight of the raw material, and the weight ratio of Na or Na ₂ O to the raw material contained in the sodium-based alkaline mineral material, namely sodium silicate, was 0.015.

Example 4

Except that the compounding ratio as shown in Table 4 was used to prepare the crude product 4 in the same manner and dimensions as in Example 1, the cement-based alkaline active binder used in the crude product 4, including GGBS, calcium hydroxide and sodium silicate, About 5 parts by weight of calcium hydroxide was used per 100 parts by weight of the raw material, and it is 0.03 in terms of the weight ratio of Na or Na ₂ O to the raw material contained in the sodium alkaline mineral material, ie, sodium silicate.

Example 5

Except that the mixing ratio as shown in Table 5 was used to prepare a crude product 5 in the same manner and dimensions as in Example 1, the cement-based alkaline active binder used in the crude product 5, including GGBS, calcium hydroxide and sodium silicate, About 5 parts by weight of calcium hydroxide was used per 100 parts by weight of the raw material, and it is 0.06 in terms of the weight ratio of Na or Na ₂ O to the raw material contained in the sodium alkaline mineral material, ie, sodium silicate.

Example 6

In Table 1, except that artificial lightweight aggregates were used instead of fine aggregates, light bricks and lightweight blocks were manufactured in the same manner as in Example 1, wherein the cemented alkali-active binders used herein included GGBS and calcium hydroxide, and calcium hydroxide was used as a raw material. About 5 parts by weight per 100 parts by weight was used.

Example 7

In Table 2, except that artificial lightweight aggregates were used instead of fine aggregates, light bricks and lightweight blocks were manufactured in the same manner as in Example 1, wherein the cemented alkali-active binders used herein included GGBS and calcium hydroxide, and calcium hydroxide was used as a raw material. About 10 parts by weight per 100 parts by weight was used.

Example 8

Except for using the mixing ratio as shown in Table 6 to produce a light brick and light block in the same manner as in Example 1, wherein the cement-based alkali active binder used herein includes GGBS and calcium hydroxide, calcium hydroxide per 100 parts by weight of raw materials About 15 parts by weight was used.

Example 9

Except for using the mixing ratio as shown in Table 7 to produce a light brick and light block in the same manner as in Example 1, wherein the cement-based alkali-active binder used herein includes GGBS and barium hydroxide, barium hydroxide raw material 100 About 0.5 parts by weight per part by weight was used.

Example 10

Except for using 5.5kg barium hydroxide to prepare a light weight brick and light block in the same manner as in Example 1 in the mixing ratio as shown in Table 7, wherein the cement-based alkali-active binder used to include GGBS and barium hydroxide About 2.5 parts by weight of barium hydroxide was used per 100 parts by weight of the raw material.

Example 11

Except that 11kg barium hydroxide was used to prepare a light weight brick and a light block in the same manner as in Example 1 in the compounding ratio as shown in Table 7, wherein the cement-based alkali active binder used herein includes GGBS and barium hydroxide, About 5 parts by weight of barium hydroxide was used per 100 parts by weight of the raw material.

Examples 12-19

A block was prepared in the same manner as in Example 1, except that the formulation was satisfied to satisfy the mixing conditions as shown in Table 8. In Examples 12, 14, 16, and 18, about 2.5 parts by weight of calcium hydroxide was used per 100 parts by weight of the raw material. Examples 13, 15, 17, and 19 are about 5 parts by weight of calcium hydroxide per 100 parts by weight of the raw material, and when the weight ratio of Na or Na ₂ O to the raw material contained in sodium-based alkaline inorganic material, that is, sodium sulfate 12 and 13 are 0.007, Examples 14 and 15 are 0.014, Examples 16 and 17 are 0.021, and Examples 18 and 19 are 0.028.

Comparative Examples 1 to 5

Comparative Products 1 to 5 were prepared in the same manner and in the same manner as in Example 1, except that the formulations were satisfied so as to satisfy the compounding conditions as shown in Table 9 below.

Binder Type Activator Type Water / raw materials Na ₂ O / raw materials Comparative Example 1 GGBS Sodium silicate 0.49 0.015 Comparative Example 2 GGBS Sodium silicate 0.48 0.025 Comparative Example 3 Fly-ash Sodium silicate 0.51 0.045 Comparative Example 4 GGBS water glass 0.50 0.025 Comparative Example 5 Fly-ash water glass 0.43 0.045

Experimental Example 1

The compressive strength of the masonry products 1 to 5 prepared in Examples 1 to 5 was tested and the results are shown in FIG. 2.

In FIG. 2, OPC refers to the compressive strength of a brick made of a general portland cement and shows 16.0. On the left side of the OPC, the compressive strength of bricks (comparative products 1 to 5 in Comparative Examples 1 to 5) using alkali-activated inorganic binders containing only raw materials (blast furnace slag) and sodium-based alkaline inorganic materials is shown in place of portland cement. On the right side of the OPC, replace Portland cement with raw materials (blast furnace slag) and sodium-free alkaline minerals (e.g. sodium hydroxide), raw materials (blast furnace slag) and sodium-free alkaline minerals (e.g. sodium hydroxide) and The compressive strength of bricks (preparations 1 to 5 of Examples 1 to 5) using an alkali-activated inorganic binder comprising a sodium-based alkaline inorganic material is shown.

Referring to FIG. 2, it can be seen that even when the cementless alkaline active binder includes only raw materials and sodium-free alkaline inorganic materials (for example, sodium hydroxide), its compressive strength is significantly superior to that of a brick using general portland cement. In addition, it can be seen that as the weight ratio of Na or Na ₂ O to raw materials included in the sodium-based alkaline inorganic material in the masonry product increases, the compressive strength increases when the sodium-free alkaline inorganic material (for example, sodium hydroxide) is added.

Experimental Example 2

The absorption rates of the masonry products 1 to 5 prepared in Examples 1 to 5 were tested and the results are shown in FIG. 3.

In FIG. 3, OPC refers to the absorption rate of bricks made of general Portland cement, and is represented by 9.33.

On the left side of the OPC, the absorption rate of bricks (comparative products 1 to 5 of Comparative Examples 1 to 5) using alkali-activated inorganic binders containing only raw materials (blast furnace slag) and sodium-based alkaline inorganic materials instead of portland cement is shown. To the right of the OPC, it replaces Portland cement and replaces raw materials (blast furnace slag) and sodium-free alkaline minerals (e.g. sodium hydroxide), raw materials (blast furnace slag) and sodium-free alkaline minerals (e.g. sodium hydroxide) and sodium Absorption rate of bricks (prepared products 1 to 5 of Examples 1 to 5) using an alkali-active inorganic binder containing a system alkaline inorganic material is shown.

Referring to FIG. 3, the absorption rate when the cementless alkaline active binder includes only the raw material and the sodium-based alkaline inorganic material, includes only the sodium-free alkaline inorganic material in the raw material, or the sodium-based alkaline inorganic material and sodium-based material in the raw material. When the inorganic material is included together, that is, the absorption rate of the masonry products 1 to 5 is generally low, its properties are superior to those of bricks made of general Portland cement or bricks containing only sodium-based alkaline inorganic materials.

Experimental Example 3

The compressive strengths of the light bricks and light blocks manufactured in Examples 6 to 8 and the light bricks and light blocks manufactured according to Examples 9 to 11 were tested, respectively, and the results are shown in FIGS. 4 and 5. Shown.

It can be seen from FIG. 4 and FIG. 5 that the compressive strengths of the light bricks and the light blocks manufactured in Examples 6 to 11 both meet the KS standards and are suitable for use as light bricks and light blocks.

Experimental Example 4

The compressive strengths of the blocks prepared in Examples 12 to 19 were tested, respectively, and the results are shown in FIG. 6.

6 shows that the compressive strength of the blocks prepared in Examples 12 to 19 increases with increasing calcium hydroxide content when the sodium sulfate addition rate is low, but when sodium sulfate addition rate (Na 2 O / raw material) is 0.014 or more, the content of calcium hydroxide is almost It can be seen that irrelevant, when the sodium sulfate addition rate (Na 2 O / raw material) is 0.021 has the best compressive strength regardless of the content of calcium hydroxide.

Therefore, when the alkaline inorganic material containing both sodium sulfate and calcium hydroxide having excellent price competitiveness is used, it is possible to obtain a very good masonry product with excellent strength characteristics and improved workability and even price competitiveness.

Accordingly, the cement-based alkali-activated masonry products of the present invention, which include both general masonry products and lightweight masonry products, can be manufactured to have various shapes, dimensions, and weights at very low cost and with excellent properties. It can be seen that it can be used, in particular, it may be used in a variety of masonry in the construction industry technology field.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, Various changes and modifications will be possible.

1 is a photograph showing the shape of the cement-based alkali-activated product of the present invention.

2 is a graph showing the compressive strength of Cement Alkali-Active Composite products 1 to 5 according to Examples 1 to 5 of the present invention.

Figure 3 is a graph showing the absorption rate of Cemented Alkali-Active masonry products 1 to 5 according to Examples 1 to 5 of the present invention.

Figure 4 is a graph showing the relationship between the calcium hydroxide content and the 28-day compressive strength contained in the cement cement alkali active material used in the light weight blocks and light bricks prepared in Examples 6 to 8, respectively.

Figure 5 is a graph showing the relationship between the barium hydroxide content and the 28-day compressive strength contained in the cement cement alkali active binder used in the light blocks and light bricks prepared in Examples 9 to 11 of the present invention, respectively.

FIG. 6 is a graph showing the relationship between calcium hydroxide and sodium sulfate content and age 28-day compressive strength contained in the cemented-alkali active binders used in the blocks prepared in Examples 12 to 19 of the present invention.

Claims (11)

Cementless alkaline active binder comprising raw material comprising any one or more of blast furnace slag, fly ash and metakaolin and a sodium free alkaline inorganic material; Fine aggregate including at least one of sand, waste foundry sand, stone powder or artificial light aggregate; And Cementum alkaline active masonry product comprising water; The method of claim 1, The cementless alkali active binder is a cement-based alkali active masonry product, characterized in that 0.5 to 20 parts by weight of the sodium-free alkaline inorganic material per 100 parts by weight of the raw material. The method of claim 2, The sodium-free alkaline inorganic material is cementless alkaline active binder, characterized in that at least one of calcium hydroxide, barium hydroxide or gypsum. The method of claim 3, wherein The calcium hydroxide is an alkaline cemented active material, characterized in that contained 0.5 to 15 parts by weight per 100 parts by weight of the raw material. The method of claim 3, wherein The barium hydroxide is a cement-based alkali active binder, characterized in that contained 0.5 to 5 parts by weight per 100 parts by weight of the raw material. The method of claim 3, wherein The gypsum cementless active material, characterized in that it contains 0.5 to 5 parts by weight per 100 parts by weight of the raw material. The method of claim 1, The cementless alkaline active binder further comprises a sodium-based inorganic material comprising any one or more of sodium silicate, sodium sulfate, powdered sodium hydroxide, liquid water glass, and liquid sodium hydroxide. product. The method of claim 7, wherein Cemental alkali active masonry product, characterized in that the weight ratio of Na or Na ₂ O to the raw material contained in the sodium-based alkaline inorganic material in the alkaline active binder material is 0.005 to 0.14. The method of claim 7, wherein When the raw material is blast furnace slag, Cement Alkali-activated masonry product, characterized in that the weight ratio of Na or Na ₂ O to the raw material contained in the sodium-based alkaline mineral material is 0.005 to 0.088. The method of claim 7, wherein When the raw material is a fly ash, Cement Alkali-activated crude product, characterized in that the weight ratio of Na or Na ₂ O to the raw material contained in the sodium-based alkaline inorganic material is 0.088 to 0.14. The method according to any one of claims 1 to 10, Cementium alkali active masonry product is cementless alkali active masonry product, characterized in that produced by steam curing at a temperature of 65 ℃ or less.

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