KR20200027632A - Reaction accelerator for non-sintering cement concrete and composition of non-sintering cement concrete comprising it - Google Patents

Abstract

The present invention relates to: a reaction accelerator for non-sintered cement concrete comprising a polyhydric hydroxy group-containing aromatic compound produced by the reaction of an aromatic acid with glycerin or glycol; and a non-sintered cement composition comprising the same. The workability of non-sintered cement concrete can be improved by providing dispersibility by comprising a hydrophobic functional group and a hydrophilic functional group, and when the calcium hydroxide in a hardened body is consumed to form a C-S-H phase, the C-S-H phase is formed to be small and densely developed to increase the compressive strength of non-sintered cement concrete, and to be used with general admixtures without restrictions on use.

Description

Reaction accelerator for non-sintering cement concrete and composition of non-sintering cement concrete comprising it}

The present invention relates to a reaction accelerator for non-calcined cement concrete, and more specifically, to increase compressive strength, including a benzene ring functional group having an effect of electrostatic repulsion and a polyvalent hydroxy group that affects solubility in water and steric hindrance, Reaction accelerator for non-calcined cement concrete for improving fluidity and non-calcined cement concrete composition comprising the same.

Recently, as global warming has become a global issue, environmental policies to limit the generation of carbon dioxide (CO ₂ ), such as the climate change agreement and carbon credit trading system, have been implemented worldwide.

Since the amount of carbon dioxide emitted from the cement production process as a construction material reaches about 7% of the amount of carbon dioxide emitted worldwide, various efforts to reduce carbon dioxide in the construction industry have been attempted.

Portland cement, which is currently most widely used in the construction industry, is obtained by crushing and mixing lime raw materials, clay raw materials, and iron raw materials in suitable proportions, and then sintering them at a high temperature of about 1,600 ° C to produce calcium silicate and aluminate phases. During this firing process, a large amount of carbon dioxide, the main cause of global warming, is released, and is recognized as a negative material that increases the environmental load.

Accordingly, studies on low-carbon non-plastic cement binders to replace existing cements are actively being conducted. In particular, various studies to replace existing cement by recycling blast furnace slag, a by-product of the steel industry, and various ashes, which are by-products of the power generation industry, have been actively conducted worldwide. These materials are characterized by less energy consumption and less carbon dioxide emissions than Portland cement, which is commonly used as an environmentally friendly raw material to reduce environmental pollutants.

Blast furnace slag and fly ash are widely used in combination with cement as a binder, and extensive research is being conducted to utilize them as non-fired cement raw materials.

In studies using blast furnace slag or fly ash as a non-calcined cement raw material, potassium hydroxide (KOH), sodium hydroxide (NaOH), water glass (sodium silicate), etc. are used to activate the reaction of non-calcined cement to form a hydrated or cured body. The same strong alkaline stimulants are mainly used. In such strong alkaline stimulators, OH ^- ions react with the slag surface to elute Si ⁴⁺ , Al ³⁺ , Ca ²⁺ , Mg ²⁺ , Na ⁺ ions inside the slag, and Si ⁴⁺ and Al ³ among the eluted ions. is ⁺ OH ^- ions in combination with Si (OH) ₃ O ^- anion to form a ^-, Al (OH) _4. Strong alkaline stimulators have a disadvantage of limiting the use of concrete admixtures such as water reducing agents used to improve workability due to the high pH, which reduces the workability because it acts directly on the hydration phase of the curing agent.

In order to solve this problem, a study to secure a fluidity and form a relatively stable cured body by suppressing a rapid reaction by using a calcium-based stimulant such as calcium hydroxide (Ca (OH) ₂ ) and calcium sulfide (CaS) instead of a strong alkaline stimulant Is going on. The use of these stimulants facilitates the use of concrete admixtures, such as water reducing agents, to enhance strength and workability.

Circulating Fluidized Bed Combustion Ash (CFBC) can be used as a calcium-based stimulant. The circulating fluidized bed ash is made by blowing air at an appropriate speed into a mixed powder bed of properly crushed coal particles and limestone, which is a fluid medium, to make a floating fluidized bed state to combust, and can burn even low-quality coal or biomass by-products and burn sulfur dioxide during combustion ( In order to increase the removal efficiency of SO ₂ ) and nitrogen oxides (NO _X ), limestone is used as a fluid medium, which is characterized by having a desulfurization effect in the boiler through a sulfidation reaction.

Ash generated in the circulating fluidized bed combustion type boiler is generated at a relatively low combustion temperature of 800 to 900 ° C and has an irregular shape. When the fluid medium is limestone, the decarbonation reaction proceeds, and limestone (CaCO ₃ ) releases carbon dioxide (CO ₂ ), becomes calcium oxide (CaO), and sulfur trioxide (SO ₃ ) generated in a desulfurization circulating fluidized bed boiler. The calcium oxide reacts to form calcium sulfate (CaSO ₄ ). Therefore, the main components of the circulating fluidized bed ash are silicon oxide (SiO ₂ ) together with calcium oxide and calcium sulfate. Silicon oxide and calcium oxide react to form a dense hydrated phase of calcium silicate (CaO-SiO ₂ -H ₂ O) to give strength to non-calcined cement concrete.

In Korean Patent Registration No. 10-1713828, blast furnace crushed slag, fly ash, or a mixture thereof is used as a raw material, and when using a calcium-based stimulant to produce a cementless cured body, glycerin or glycerin is used as an accelerating component. Cement-promoting admixtures comprising a mixture of triethanolamine are disclosed. When these admixtures are used, the triol group compound promotes hardening and calcium hydroxide is consumed, resulting in a C-S-H (Calcium Silicate Hydrates) phase as an important hydration phase for strength development. Since the C-S-H phase is small and densely developed, it forms a hydrated image that is advantageous for strength development, and thus has the advantage of enhancing the strength of the resulting cemented cured product by 20-60%. However, there is a problem of reduced workability caused by using a triol group compound, and there is a need to further improve strength.

Republic of Korea Patent Publication No. 10-2005-0041439 Republic of Korea Patent Publication No. 10-2010-0040143 Republic of Korea Patent Publication No. 10-2010-0126736 Republic of Korea Patent Registration No. 10-1317647 Republic of Korea Patent Registration No. 10-1713828

In the present invention, in the process of manufacturing non-fired cement concrete using blast furnace slag, fly ash, and mixtures thereof as a main raw material, a calcium-based stimulant, and a triol compound as a curing aid, the triol compound In order to solve the problem of workability deterioration caused by the use of and to further improve the strength, in the present invention, it is possible to solve the problem of workability deterioration by extending the fluidity and to simultaneously improve the compressive strength of non-fired cement concrete. It is an object to provide a reaction accelerator for non-calcined cement concrete containing a hydroxy group-containing aromatic compound and a non-calcined cement concrete composition comprising the same.

In order to achieve the above object, in the present invention,

(a) blast furnace slag or fly ash or mixtures thereof;

(b) calcium-based stimulants;

(c) a triol group compound that is a curing aid; And

(d) A non-calcined cement concrete composition comprising a reaction accelerator which is a polyhydric hydroxy group-containing aromatic compound produced by the reaction of an aromatic acid with glycerin or glycols.

The composition may further include at least one selected from amines, glycerins, glycols, and lignins as reaction accelerators.

In addition, in the present invention,

Blast furnace slag or fly ash or a mixture thereof; Calcium-based stimulants; In the reaction accelerator for promoting the reaction of the non-calcined cement concrete containing a triol compound that is a curing aid,

The reaction accelerator provides a reaction accelerator for non-calcined cement concrete comprising a polyhydric hydroxy group-containing aromatic compound produced by the reaction of an aromatic acid with glycerin or glycols.

In addition, the present invention provides an active mortar comprising the non-calcined cement concrete composition.

In addition, the present invention provides an active concrete comprising the non-calcined cement concrete composition.

In addition, the present invention provides a non-calcined cement concrete product made of the non-calcined cement concrete composition. The concrete product is preferably one of brick, block, tile, water pipe, sewer pipe, boundary stone, concrete pile, prestressed concrete pile, concrete panel, concrete pipe, manhole, bubble concrete and concrete structure.

The non-calcinated cement reaction accelerator of the present invention improves workability and compressibility by extending fluidity in a non-calcined cement concrete composition comprising blast furnace slag, fly ash or a mixture thereof as a raw material and a triol group compound as a calcium-based stimulant and a curing aid. Strength can be enhanced. That is, the triol group compound, a curing aid added when preparing non-calcined cement concrete using a calcium-based stimulant, promotes hardening and enhances strength, and a reaction promoter containing hydrophilic and hydrophobic groups in the molecule improves dispersibility. By contributing to improve workability, the carboxyl group (-COOH) contained in the hydrophobic group of the reaction accelerator interacts with calcium (Ca ²⁺ ) cations, and the CSH hydration phase formed by consumption of calcium hydroxide is small and densely developed, resulting in strength By forming a hydrated image favorable for expression, the strength of the non-fired cement concrete is further improved.

In addition, the reaction accelerator of the present invention can be mixed with a general concrete admixture, so there is no restriction in use, and when manufacturing non-fired cement concrete, it is possible to reduce the amount of powder used at the same strength, thereby reducing the cost.

The present invention provides a non-calcined cement concrete composition comprising a reaction accelerator for non-calcined cement concrete. Non-fired cement concrete composition of the present invention, (a) blast furnace slag or fly ash or a mixture of the main raw material; (b) calcium-based stimulants; (c) a triol group compound that is a curing aid; And (d) a reaction accelerator for non-calcined cement concrete. In addition, it provides an active mortar and active concrete containing the non-calcined cement concrete composition, and provides a non-calcined cement concrete product made of the non-calcined cement concrete composition. Each will be described below.

1. Reaction accelerator for non-fired cement concrete

The reaction accelerator for non-calcined cement concrete of the present invention includes a polyvalent hydroxy group-containing aromatic compound. The polyhydric hydroxy group-containing aromatic compound includes a compound produced by the reaction of an aromatic acid with glycerin or glycols, and includes both a final product as well as a side reaction product and an intermediate compound produced during the reaction.

It is preferable to use phthalic anhydride, phthalic anhydride, isophthalic acid, benzoic acid, or benzene and naphthalene having two or more acetic acid substituents, and it is more preferable to use phthalic anhydride.

It is preferable to use at least one selected from glycerin, diglycerin, triglycerin, polyglycerin, phosphoglycerin, diphosphoglycerin, and triphosphoglycerin. Glycerin is particularly preferably used as a biodiesel by-product.

It is preferable to use at least one selected from propylene glycol, dipropylene glycol, tripropylene glycol, polypropylene glycol, monoethylene glycol, diethylene glycol, triethylene glycol, and polyethylene glycol.

The aromatic acid and glycerin or glycols are preferably reacted in a molar ratio of 1: 1 to 2, but are not limited thereto.

Representative examples of the polyhydric hydroxy group-containing aromatic compound produced by the reaction of the aromatic acid and glycerin or glycols of the present invention include compounds of the following Formulas 1 to 4.

The polyvalent hydroxy group-containing aromatic compound as described above includes both a hydrophilic group and a hydrophobic group in a molecule to improve dispersibility and improve workability. In addition, the benzene ring functional group has the effect of electrostatic repulsion, and the carboxyl group (Carboxyl group; -COOH) contained in the hydrophobic group interacts with the calcium (Ca ²⁺ ) cation to form a small and dense CSH hydration image formed by consuming calcium hydroxide. It is developed to improve the compressive strength of non-calcined cement concrete and improve the fluidity by forming a hydrated image that is advantageous for strength development.

The reaction accelerator for non-calcined cement concrete may further include at least one selected from amines, glycerins, glycols, and lignins.

Amines include monoethanolamine, diethanolamine, triethanolamine, triisopropanolamine, N, N -bis (2-hydroxypropyl) ethanolamine, N, N -bis (2-hydroxyethyl) amino-2-propanol and N -methyl diethanolamine, 1-[(2-hydroxyethyl) amino] -2-propanol {1-[(2-hydroxyethyl) amino] -2-propanol}.

Glycerins include glycerin, diglycerin, triglycerin, polyglycerin, phosphoglycerin, diphosphoglycerin and triphosphoglycerin. Glycerin is particularly preferably used as a biodiesel by-product.

Glycols include propylene glycol, dipropylene glycol, tripropylene glycol, polypropylene glycol, monoethylene glycol, diethylene glycol, triethylene glycol and polyethylene glycol.

Lignins include calcium lignosulfonate and sodium lignosulfonate.

When it further contains at least one selected from amines, glycerins, glycols and lignins, it is preferable to mix the reaction accelerator for non-fired cement concrete with these components in a weight ratio of 1: 1 to 3.

The reaction accelerator for non-fired cement concrete of the present invention is used as an admixture in non-fired cement concrete.

The reaction accelerator for non-calcined cement concrete may further include one or more admixtures for general Portland cement concrete.

2. Arsenic  Cement concrete composition

(1) Main raw materials

It is preferable to use blast furnace slag or fly ash or a mixture thereof as a main raw material for preparing non-fired cement concrete.

(2) Calcium-based stimulants

It is preferable to use at least one selected from calcium sulfate, calcium nitrate, calcium silicate, calcium hydroxide, calcium chloride, calcium stearate, calcium metaphosphate, calcium lactate and calcium oxide. Calcium-based stimulants have a stable response compared to strong alkaline stimulants.

As a calcium-based stimulant, it is more preferable to use CFBC ash containing both calcium sulfate and calcium oxide. Calcium sulfate of CFBC ash reacts with aluminum oxide (Al ₂ O ₃ ) and silicon dioxide (SiO ₂ ) components in the blast furnace slag to produce a hydrated phase of ettringite, and calcium oxide is brought into contact with CaO + H ₂ O-> Ca (OH) ₂ reacts to produce calcium hydroxide, which acts as a stimulator of blast furnace slag. The resulting calcium hydroxide reacts with blast furnace slag to form a compact hydrated phase (hardened phase) of CS-H hydrated phase (CaO-SiO ₂ -H ₂ O) to give strength to blast furnace slag-based cement. Calcium hydroxide is a weak alkaline stimulant that is very advantageous for the initial and long-term compressive strength, and is very effective in controlling the initial fluidity of cement and the loss of fluidity over time because it has a very stable reaction with water-cracked slag. The calcium oxide component of CFBC ash is produced at a high temperature and has activity, thereby exhibiting a higher intensity of expression than a commercially available quick lime component.

Fly ash has no magnetic properties such as blast furnace slag, but when it has an irritant such as calcium hydroxide, it hydrates and hardens. Fly ash has relatively less amorphous (glassy component) compared to blast furnace slag, but has a very stable reaction with a calcium hydroxide stimulant, which is advantageous for long-term strength development rather than initial strength development.

(3) Triol group compound that is a curing aid

The triol group compound is a compound containing three triol groups, ie, an alcohol group or a hydroxy group (-OH) at the terminal, and the representative triol group compound is preferably glycerin, triethanolamine (TEA) or a mixture thereof. It is not limited.

The triol group compound promotes hardening when the cement is manufactured using a calcium-based stimulant to enhance strength.

(4) Reaction accelerator for non-fired cement concrete

Description of the reaction accelerator for non-fired cement concrete is as described above.

The reaction accelerator for non-calcined cement concrete and the triol compound are preferably mixed in a weight ratio of 1: 8 to 10, and particularly preferably mixed in a weight ratio of 1: 9.

In the non-calcined cement concrete composition of the present invention, the reaction accelerator for the non-calcined cement concrete is the main raw material 100 parts by weight  0.001 ~ 30 parts by weight  It is preferred to use, 0.01 ~ 15 parts by weight  It is more preferable to use, 0.1 to 10 Parts by weight It is more preferable to use as.

3. Active mortar, active concrete and non-fired cement concrete products

Using the non-calcined cement concrete composition, an active mortar, activated concrete, or non-calcined cement concrete product may be prepared by a conventional method used in the art.

Typical non-calcined cement concrete products include bricks, blocks, tiles, water pipes, sewer pipes, boundary stones, concrete piles, prestressed concrete piles, concrete panels, concrete pipes, manholes, bubble concrete, and concrete structures.

In the process of producing non-calcined cement concrete products, curing conditions are similar to those of the general Portland cement concrete manufacturing method, but steam curing is preferred at a temperature of 60 to 100 ℃, and steam curing at a temperature of 65 to 85 ℃ It is more preferable.

The present invention will be described in more detail through the following examples. The following examples illustrate the invention, and the scope of the invention is not limited thereto.

<Example 1>

Preparation of reaction accelerator: reaction of phthalic anhydride and glycerin

After mixing 148.10 g (1.00 mol) of phthalic anhydride and 92.1 g (1.0 mol) of glycerol (glycerol) in a 500 mL round-bottomed flask and heating while stirring, the reaction proceeds while maintaining the temperature at 120-130 ° C for about 2 hours 30 minutes. Did.

<Example 2>

Preparation of reaction accelerator: reaction of phthalic anhydride and monoethylene glycol

148.10 g (1.00 mol) of phthalic anhydride and 62.1 g (1.0 mol) of monoethylene glycol were mixed in a 500 mL round bottom flask and heated while stirring to maintain the temperature at 120-130 ° C. for about 2 hours and 30 minutes, and the reaction proceeded. .

<Example 3>

Preparation of reaction accelerator: reaction of phthalic anhydride and diethylene glycol

148.10 g (1.00 mol) of phthalic anhydride and 106.1 g (1.0 mol) of diethylene glycol were mixed in a 500 mL round-bottom flask and heated while stirring to maintain the temperature at 120-130 ° C. for about 2 hours and 30 minutes to proceed the reaction. .

<Example 4>

Mixing of reaction accelerator and curing aid: Mixing reaction product of phthalic anhydride and glycerin with crude glycerin

An 84% aqueous solution was prepared by mixing the reaction accelerator of Example 1 with the triol group compound crude glycerin (CG) in a weight ratio of 1: 9 and adding water.

<Example 5>

Mixing of reaction accelerator and curing aid: Mixing reaction product of phthalic anhydride and ethylene glycol with crude glycerin

84% aqueous solution was prepared by mixing the reaction accelerator of Example 2 with the triol group compound glycerin in a weight ratio of 1: 9, and then adding water.

<Example 6>

Mixing of reaction accelerator and curing aid: Mixing of reaction product of phthalic anhydride and diethylene glycol and crude glycerin

84% aqueous solution was prepared by mixing the reaction accelerator of Example 3 with the triol group compound glycerin in a weight ratio of 1: 9, and then adding water.

<Production Examples 1 to 3>

Arsenic  Production of cement concrete products

As the main raw material, blast furnace slag was used. For the blast furnace slag, a commercially available S company was used, and the specific surface area was 4,700 cm 2 / g.

CFBC ash was used as a calcium-based stimulant. CFBC ash used as a calcium stimulant was pulverized with a vibration mill to have a specific surface area of 5000 cm 2 / g.

Blast furnace slag was mixed with 75 parts by weight of CFBC ash and 1 part by weight of the mixture of the reaction accelerators of Examples 4 to 6 and the triol group compound. The ratio of the reaction accelerator and the triol group compound in the mixture was 1: 9.

After dry mixing the ingredients, a predetermined number of blended water was added and mixed in a mortar mixer. The dough mixed with the ingredients was placed in a molded mold, left standing at room temperature (20 ° C) for 2 hours, and then steamed at 65 ° C for 4 hours. As a mold of the molded body, a (5 × 5 × 5) cm 3 cubic type mold was used, and after curing at 65 ° C., the mold was demolded to obtain a non-fired cement concrete product.

< Comparative example  1 to 3>

Comparative Examples 1 to 3 in the same manner as in Preparation Examples 1 to 3, except that the polyhydric hydroxy group-containing aromatic compound of Examples 1 to 3, which is a reaction accelerator, was used and the triol group compound that is a curing aid was not used. Concrete products were prepared.

<Experimental Example 1>

Confirmation of compressive strength of reaction accelerator for non-calcined cement concrete

The compressive strengths of the non-fired cement concrete products of Preparation Examples 1 to 3 were confirmed as follows.

As a control, a non-calcined cement concrete product was prepared in the same manner using a representative triol group compound glycerin. As glycerin, 99% glycerin (G) and crude glycerin (CG) were used.

The compressive strength of the samples using the reaction accelerators and curing aids in the samples of Preparation Examples 1 to 3 and the control using 99% glycerin (G) and crude glycerin (CG) was used on the 1st, 7th and 28th compressive strength meters. Was measured. The results are shown in Table 1 below.

division W / B blast furnace
Slag CFBC
ash additive Compressive strength (MPa) 1 day 7 days 28 days G 48.5 75 25 1.0 20.86 26.59 37.32 CG 48.5 75 25 1.0 19.05 24.94 36.25 Preparation Example 1 48.5 75 25 1.0 21.72 26.45 40.45 Preparation Example 2 48.5 75 25 1.0 18.54 25.63 36.56 Preparation Example 3 48.5 75 25 1.0 19.20 26.18 37.83 ※ Compounding strength (25-24-180), binder (non-calcined cement) 340kg / m ³ , AD 24kg / m ³

As can be seen from the results of Table 1, Preparation Examples 1 to 3, which are concrete samples prepared by using both reaction accelerators and curing aids, are similar or higher when compared with glycerin, a control using only a triol compound as a curing aid. Compressive strength is shown.

<Experimental Example 2>

Confirmation of flow characteristics of reaction accelerator for non-calcined cement concrete

The flow characteristics of the non-fired cement concrete products of Preparation Examples 1 to 3 were confirmed as follows.

For comparison, the non-calcined cement concrete products of Comparative Examples 1 to 3 were used. As a control, a non-calcined cement concrete product was prepared in the same manner using a representative triol group compound glycerin. As glycerin, 99% glycerin (G) and crude glycerin (CG) were used.

The flow characteristics were using a mortar flow tester, and the test method was measured according to KS L 5111. The flow characteristics immediately after and 60 minutes after the production of non-calcined cement concrete were confirmed and the results are shown in Table 2 below.

division Additive usage
(Parts by weight) Hit Count Flow (mm) Immediately after manufacture 60 minutes later G 1.0 15 165 121 CG 1.0 15 170 131 Comparative Example 1 1.0 15 192 159 Comparative Example 2 1.0 15 184 136 Comparative Example 3 1.0 15 177 141 Preparation Example 1 1.0 15 211 173 Preparation Example 2 1.0 15 191 148 Preparation Example 3 1.0 15 80 153 Non-fired concrete formulation: binder (non-fired cement) 320kg, s / a = 48.5
99% glycerin (G), crude glycerin (CG)

The flow characteristics of Comparative Examples 1 to 3 in which a polyhydroxy group-containing aromatic compound was used as a reaction accelerator were excellent compared to a control group using only glycerin, a triol group compound. In addition, the preparations 1 to 3 using both the reaction accelerator and the curing aid triol group compound have better flow characteristics compared to the control using only glycerin or the comparative examples 1 to 3 using only the reaction accelerator, and sufficient workability is secured even after 60 minutes. It can be seen that it has a flow value of.

Claims (18)

(a) blast furnace slag or fly ash or a mixture of main ingredients thereof;
(b) calcium-based stimulants;
(c) a triol group compound that is a curing aid; And
(d) A non-calcined cement concrete composition comprising a reaction accelerator which is a polyvalent hydroxy group-containing aromatic compound produced by the reaction of an aromatic acid with glycerin or glycols. According to claim 1,
The calcium-based stimulant is at least one selected from calcium sulfate, calcium nitrate, calcium silicate, calcium hydroxide, calcium chloride, calcium stearate, calcium metaphosphate, calcium lactate, and calcium oxide. According to claim 1,
The triol compound is glycerin, triethanolamine (TEA) or a mixture thereof, characterized in that, non-calcined cement concrete composition. According to claim 1,
The reaction accelerator is characterized in that contained in 0.001 to 30 parts by weight per 100 parts by weight of the main raw material, non-calcined cement concrete composition. The method according to any one of claims 1 to 4,
As a reaction accelerator, characterized in that it further comprises at least one selected from amines, glycerins, glycols and lignins, non-calcined cement concrete composition. The method of claim 5,
The amines are monoethanolamine, diethanolamine, triethanolamine, triisopropanolamine, N, N -bis (2-hydroxypropyl) ethanolamine, N, N -bis (2-hydroxyethyl) amino-2-propanol And N -methyl diethanolamine and 1-[(2-hydroxyethyl) amino] -2-propanol {1-[(2-hydroxyethyl) amino] -2-propanol}. Fired cement concrete composition. The method of claim 5,
The lignin is one or more selected from calcium lignosulfonate and sodium lignosulfonate, a non-calcined cement concrete composition. Blast furnace slag or fly ash or a mixture thereof; Calcium-based stimulants; In the reaction accelerator for promoting the reaction of the non-calcined cement concrete containing a triol compound that is a curing aid,
The reaction accelerator comprises a polyhydric hydroxy group-containing aromatic compound produced by the reaction of an aromatic acid with glycerin or glycols. The method of claim 8,
The aromatic acid is phthalic anhydride, phthalic anhydride, isophthalic acid, benzoic acid, and a reaction accelerator for non-calcined cement concrete, characterized in that selected from benzene and naphthalene having two or more acetic acid substituents. The method of claim 8,
The glycerin is a reaction accelerator for non-calcined cement concrete, characterized in that it is selected from glycerin, diglycerin, triglycerin, polyglycerin, phosphoglycerin, diphosphoglycerin and triphosphoglycerin. The method of claim 8,
The glycols are propylene glycol, dipropylene glycol, tripropylene glycol, polypropylene glycol, monoethylene glycol, diethylene glycol, triethylene glycol, and polyethylene glycol reaction accelerator, characterized in that selected from among those. The method of claim 8,
The reaction of the aromatic acid and glycerin or glycols, a reaction accelerator for non-calcined cement concrete, characterized in that the aromatic acid and glycerin or glycols react at a molar ratio of 1: 1 to 2. The method of claim 8,
The reaction accelerator is a reaction accelerator for non-calcined cement concrete, further comprising at least one selected from amines, glycerins, glycols and lignins. The method according to any one of claims 8 to 13,
The reaction accelerator is a reaction accelerator for non-calcined cement concrete, characterized in that used as 0.001 to 30 parts by weight per 100 parts by weight of the main raw material. An active mortar comprising the non-calcined cement concrete composition of claim 1. Active concrete comprising the non-calcined cement concrete composition of claim 1. A non-fired cement concrete product made of the non-fired cement concrete composition of any one of claims 1 to 4. The method of claim 17,
The non-calcined cement concrete product is any one of brick, block, tile, water pipe, sewer pipe, boundary stone, concrete pile, prestressed concrete pile, concrete panel, concrete pipe, manhole, bubble concrete and concrete structure. Cement concrete products.