KR100938928B1 - Agent for surface treatment of concrete - Google Patents

Abstract

The present invention relates to a concrete surface treatment agent used in the manufacture of concrete products and mortar, and more particularly, when used in concrete products, it does not generate harmful substances such as strong alkalis and volatile organic compounds, and is excellent in antifungal properties as well as atopy. It relates to an environmentally friendly concrete surface treatment agent that can prevent various dermatitis.

Concrete, Surface Treatment

Description

Concrete Surface Treatment Agent {AGENT FOR SURFACE TREATMENT OF CONCRETE}

The present invention relates to a concrete surface treatment agent used in the manufacture of concrete products and mortar, and more particularly, when used in concrete products, it does not generate harmful substances such as strong alkalis and volatile organic compounds, and is excellent in antifungal properties as well as atopy. It relates to an environmentally friendly concrete surface treatment agent that can prevent various dermatitis.

In general, concrete surface treatment agent is to use to keep the surface of concrete products in the production of concrete bricks and mortars such as concrete bricks, hollow concrete blocks, boundary stones, interlocking blocks, vegetation blocks, reinforced concrete, bench plum, culvert, ready-mixed concrete.

However, in the case of the conventional concrete surface treatment agent, various alkaline dermatitis, such as atopic dermatitis, is a new house syndrome spreading prevalently among children and the elderly, as strong alkaline and volatile organic compounds are released during production.

The present invention for solving the problems of the conventional concrete surface treatment agent does not generate harmful substances such as strong alkalis and volatile organic compounds when producing products such as concrete and mortar as well as concrete products having excellent properties such as strength The purpose is to provide a concrete surface treatment agent that can be produced.

The present invention for achieving the above object, characterized in that consisting of 15 to 40 parts by weight of ionic AE agent, 3 to 10 parts by weight of the sap vinegar and 15 to 30 parts by weight of jijangsu with respect to 100 parts by weight of water-soluble rosin Provide concrete surface treatment agent.

In particular, it is preferable that 1 to 4 parts by volume of the polycarboxylic acid-based water reducing agent is included with respect to 100 parts by volume of the water-soluble rosin.

In addition, it provides a concrete product, characterized in that manufactured using the concrete surface treatment agent.

Hereinafter, the concrete surface treatment agent and the concrete product of the present invention will be described in detail.

Concrete surface treatment agent of the present invention can prevent the occurrence of various dermatitis such as atopy without generating strong alkali and volatile organic compounds in the production of concrete products and mortar, water-soluble rosin, ionic AE agent, wood sap and It is made by including the number of obstacles.

The water-soluble rosin is intended to impart antimicrobial properties and enhance the adhesion and air entrainment of the product. The method for producing the water-soluble rosin is not particularly limited, and for example, may be prepared by mixing rosin and sodium hydroxide in water.

In addition, the ionic AE agent is used to disperse the cement particles to improve workability and to maintain a smooth surface of the product.

When the ionic AE agent is mixed in less than 15 parts by volume, the air entraining action does not occur smoothly, so that product molding is not smoothly formed, and the surface of the product is roughly formed. This increases the bonding strength of the cement, there is a problem that physical properties such as strength is not good.

The wood sap is to prevent various types of dermatitis such as atopic dermatitis by giving antimicrobial activity to the product and reducing the occurrence of strong alkaline, and 3 to 10 parts by volume of 100 parts by weight of the water-soluble rosin is used.

When the wood sap is mixed in less than 3 parts by volume can not prevent the antibacterial and strong alkaline generation required to prevent dermatitis, etc. If the mixture is more than 10 parts by volume the production cost of the product is increased have.

In addition, the jijangsu is to impart far-infrared rays and ion-releasing effect and deodorizing effect to the product, and is used by mixing 15-30 parts by volume with respect to 100 parts by volume of the water-soluble rosin.

When the jitter water is mixed at less than 15 parts by volume, far infrared rays and ion release effects and deodorizing effects are insufficient, and thus, when the mixture is mixed at less than 30 parts by volume, physical properties such as strength of the product may be deteriorated. .

In particular, the jijangsu is preferably used jijisu prepared using a fine clay powder of 4000 ~ 6000g / ㎠ in order to impart far-infrared emission effect without lowering the physical properties of the product.

On the other hand, in order to further improve physical properties such as strength of concrete products and mortar, it is preferable to use 1 to 4 parts by volume of a polycarboxylic acid-based water reducing agent with respect to 100 parts by volume of the water-soluble rosin, and to use more than 4 parts by volume. In this case, there is a problem that the moldability is greatly reduced, such as the material is separated and the deflection force and fluidity is large.

Concrete surface treatment agent of the present invention can be widely used in the production of mortar as well as concrete products such as concrete bricks, boundary stone, interlocking block, vegetation block, bench plum, culvert, ready-mixed concrete, and unlike the conventional surface treatment agent strong alkali, volatile Not only does not generate organic compounds, but also has excellent physical properties such as strength.

Unlike the conventional surface treatment agent, the concrete surface treatment agent of the present invention can not only neutralize concrete products and mortar, but also have excellent antifungal properties without generating harmful substances such as strong alkalis and volatile organic compounds. It is not only environmentally friendly, but also has excellent effects such as strength.

Hereinafter, the concrete surface treatment agent of the present invention will be described in more detail with reference to Examples.

Example 1

The concrete surface treatment agent of Example 1 was prepared by slowly stirring 20 parts by volume of the ionic AE agent, 5 parts by weight of the sap vinegar, and 20 parts by weight of the jizo water to 100 parts by weight of the aqueous rosin.

Example 2

15 parts by weight of the ionic AE agent, 10 parts by weight of the sap vinegar and 30 parts by weight of jizo water were slowly stirred with respect to 100 parts by weight of the aqueous rosin to prepare a concrete surface treatment agent of Example 2.

Example 3

40 parts by weight of the ionic AE agent, 3 parts by weight of sap vinegar and 15 parts by weight of jizo water were slowly stirred with respect to 100 parts by weight of the aqueous rosin to prepare a concrete surface treatment agent of Example 3.

Example 4

20 parts by weight of the ionic AE agent, 5 parts by weight of the sap solution, 20 parts by weight of Jijisu and 4 parts by weight of the polycarboxylic acid-based water reducing agent were slowly stirred with respect to 100 parts by weight of the aqueous rosin to prepare a concrete surface treatment agent of Example 4.

Example 5

20 parts by weight of the ionic AE agent, 5 parts by weight of the sap solution, 20 parts by weight of Jijisu and 1 part by weight of the polycarboxylic acid-based water reducing agent were slowly stirred with respect to 100 parts by weight of the aqueous rosin to prepare a concrete surface treatment agent of Example 5.

Comparative Example 1

As Comparative Example 1, a commercially available surface treatment agent was purchased and used.

The surface treatment agents of Examples 1 to 5 and Comparative Example 1 were respectively measured three times by using a test PH measuring device, the average value is shown in Table 1 below.

[Table 1] PH measurement result

Example 1 Example 2 Example 3 Example 4 Example 5 Comparative Example 1 PH 7.5 7.4 7.5 7.3 7.3 10.0

As confirmed in Table 1 above, in the case of Comparative Example 1, the pH value is 10.0, and the alkali is strong while the surface treatment agents of Examples 1 to 5 of the present invention all showed neutral pH as 7.3 to 7.5.

[Manufacture of Concrete Bricks]

General Portland cement, fine aggregate and water, and the surface treatment agents of Examples 1 to 5 and Comparative Example 1 were mixed, respectively, to prepare a concrete brick of 57 × 90 × 190 mm. At this time, the concrete brick was manufactured by mixing 800 parts by weight of natural aggregate and crushed fine aggregate in 100 parts by weight of general Portland cement, 800 parts by weight of fine aggregate, 25 parts by weight of water, and 0.5 parts by weight of surface treatment agent.

And concrete mixtures were tested for slump, water loss and air volume. The slump test was tested by KS F 2402 (slump test method), and the susceptibility test was tested by KS F 2560 (chemical admixture for concrete), and the air volume test was conducted by KS F 2421 (air volume test method by the volume of concrete that is not firm). ), And the results are shown in Table 2 below.

[Table 2] Test results of slump, water loss rate and air volume

Example 1 Example 2 Example 3 Example 4 Example 5 Comparative Example 1 Slump (mm) 120 122 121 122 122 115 % Reduction 15 17 16 17 15 11 Air volume (%) 17 16 17 17 16 10

In addition, the compressive strength of the manufactured concrete bricks were tested, and the compressive strength test was tested by KS F 2405 (compressive strength test method of concrete), and the results are shown in Table 3 below.

[Table 3] Compressive strength test results

o 3 days of age

Example 1 Example 2 Example 3 Example 4 Example 5 Comparative Example 1 Compressive strength (N / ㎡) 6.5 6.5 6.7 6.4 6.7 5.2

o 7 days of age

Example 1 Example 2 Example 3 Example 4 Example 5 Comparative Example 1 Compressive strength (N / ㎡) 13.5 13.6 13.9 13.5 13.8 12.2

o 28 days of age

Example 1 Example 2 Example 3 Example 4 Example 5 Comparative Example 1 Compressive strength (N / ㎡) 20.2 21.0 20.4 20.3 21.8 18.0

And, it was measured for the anion generation and far-infrared emissivity of the manufactured concrete bricks, the measurement results are shown in Table 4 below. At this time, the amount of anion generation was measured by the measurement method of KICM-FIR-1042, the far-infrared emissivity was measured by the measurement method of KICM-FIR-1005.

[Table 4] Measurement of Anion Generation and Far Infrared Emissivity

Example 1 Example 2 Example 3 Example 4 Example 5 Comparative Example 1 Anion generation amount (ion / cc) 116 120 111 115 115 - Far Infrared Emissivity (5 ~ 20㎛) 0.911 0.921 0.901 0.910 0.909 -

In addition, the anti-mildew characteristics of the manufactured concrete bricks were tested and tested according to ASTM G21. The strains used were Aspergillus niger ATCC 9642, Penicillium pinophillum ATCC 11797, Cheatomium globosum ATCC 6205, Gliosiadium virens ATCC 9645, Aureobasidium pullulans ATCC 15233.

The antifungal properties test results are shown in Table 5 below.

[Table 5] Antifungal characteristics test results

Example 1 Example 2 Example 3 Example 4 Example 5 Comparative Example 1  Mold development 1 week 0 0 0 0 0 30% ↑ 2 weeks 0 0 0 0 0 60% ↑ 3 weeks 0 0 0 0 0 60% ↑ 4 Weeks 10% ↓ 10% ↓ 10% ↓ 10% ↓ 10% ↓ 60% ↑

In Comparative Example 1, the growth of bacteria was continuously recognized, but in Examples 1 to 5, the growth of bacteria was not recognized for 4 weeks or more.

Claims (3)

15 to 40 parts by weight of ionic AE agent, 3 to 10 parts by weight of sap vinegar, and 15 to 30 parts by weight of zirconia with respect to 100 parts by weight of water-soluble rosin. The concrete surface treatment agent according to claim 1, wherein 1 to 4 parts by weight of a polycarboxylic acid-based water reducing agent is included with respect to 100 parts by weight of the water-soluble rosin. The concrete product, characterized in that produced using the concrete surface treatment agent of claim 1.