KR101008570B1 - Manufacturing method of material having the green cement - Google Patents

Abstract

PURPOSE: A method for manufacturing a formed product having environmentally-friendly cement with fermented liquid is provided to build eco-friendly environment. CONSTITUTION: A method for manufacturing a formed product having environmentally-friendly cement with fermented liquid comprises: a step of mixing 3 weight% of Saccharomyces cerevisiae, 57 weight% of grain meal, and 40 weight% of black sugar; a step of adding the mixture in 10 times weight of water; a step of fermenting at 30°C for 7-10 days; a step of mixing the fermented liquid with cement slurry; and a step of molding the cement slurry and curing. The cement slurry is cement mortar slurry or cement concrete slurry.

Description

Manufacturing method of eco-friendly cement-containing moldings added with fermentation broth {Manufacturing method of material having the green cement}

The present invention relates to a method for producing cement-containing moldings, such as concrete columns, concrete slabs, retaining wall blocks, raft blocks, bricks, etc., which are used as civil engineering materials and building materials. It relates to a method for producing an environmentally friendly cement-containing molding to which the fermentation broth is added.

Until now, cement-containing moldings have been mainly used for human living or structures in rivers and rivers.

However, the cement-containing moldings, having strong alkalinity and containing a lot of harmful components, had a lot of adverse effects on humans or living organisms living in a structure made of cement-containing moldings.

In particular, since the cement-containing moldings maintain their harmfulness even after a long period of time, the ecosystem is continuously destroyed.

 Accordingly, there has been a need for the invention of a method that can produce environmentally friendly cement-containing moldings that do not adversely affect humans or organisms.

The present invention has been made in accordance with the above-described demands, and an object of the present invention is to provide a method for producing an environmentally friendly cement-containing molding product to which a fermentation broth is added which can produce a cement-containing molding product containing no harmfulness.

The present invention for solving the above problems, after mixing 3% by weight of Saccharomyces cerevisiae , 57% by weight of grain gourd, and 40% by weight of brown sugar to produce a mixture, the mixture in water equivalent to 10 times the weight of the mixture Mixing and mixing the liquid fermentation broth produced by fermentation at a room temperature of 30 ° C. for 7 to 10 days with 3% to 5% of the weight of the cement slurry to the cement slurry (a); It characterized in that it comprises the step (b) of molding and curing the cement slurry mixed with the fermentation broth of step (a).
The present invention is also characterized in that the cement slurry is a cement mortar slurry in which cement, sand and water are mixed, or a cement concrete slurry in which cement, sand, water, and gravel are mixed.

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According to the present invention as described above, it is possible to produce a cement-containing molding having no harmful effects through the fermentation broth, and when the cement-containing molding prepared according to the present invention is used as civil engineering and building materials, it is harmful to humans and living organisms. There is an effect to create a living and ecological environment that does not have an effect.

Hereinafter, the present invention will be described in detail.

First, the cement containing slurry for manufacturing a cement containing molded article is manufactured.

The cement-containing slurry is not particularly limited as long as it is well known in the art, such as cement, sand, cement mortar slurry containing water, or cement concrete slurry containing cement, sand, gravel, water, and the manufacturing process is also special. no limits.

Next, the fermentation broth is mixed with the cement-containing slurry.

At this time, it is preferable that the fermentation broth contains 3% to 5% of the weight of the cement used to prepare the cement-containing slurry.

Table 1 below shows the cement slurry reaction state when various fermentation broths were added to the cement slurry.

Experimental name cement
Weight
Compounding ratio Reaction to cement containing moldings Cement smell
(Immediate blending) Curing time
problem 28 days curing
Compressive strength ① Commercial grain rice wine 3% radish Swell weakness 5% radish Swell weakness 10% radish Swell Very weak ② 10% by weight of microorganisms + 90% by weight of grain gourd (10-day culture) 3% U Swell weakness 5% U Swell weakness 10% U Swell Very weak ③ 20% by weight of microorganisms + 80% by weight of grain gourd (20 days culture) 3% U Swell Very weak 5% U Swell Very weak 10% U Swell Very weak ④ Microbial 20% by weight + grain gourd 80% by weight + water 10 times (20 days culture)

3%
U
Swell
normal 5% U Swell weakness 10% U Swell Very weak ⑤ 20% by weight of microorganisms + 80% by weight of grain gourd + 20 times of water (20 days culture)
3%

U
Swell slightly
normal 5% U Swell slightly normal 10% radish Swell heavily weakness ⑥ 5% by weight of microorganisms + 95% by weight of grain gourd + 10 times of water (30 ℃ 10 days culture)
3%

U
Swell
normal 5% U Swell normal 10% radish Swell weakness ⑦ 5% by weight of microorganisms + 95% by weight of grain gourd + water 20 times (30 ℃ 10 days culture)
3%

U
normal
normal 5% U normal normal 10% radish Swell weakness ⑧Microorganism 5% by weight + grain gourd 60% by weight + brown sugar 35% by weight + water 10 times (30 ℃ 10 days culture)
3%
U
normal
normal 5% radish Swell slightly weakness 10% radish Swell heavily normal ⑨3% by weight of microorganisms 60% by weight of grain gourd + 37% by weight of brown sugar + 10 times of water (30 ℃ 10 days culture)
3%

radish
normal
normal 5% radish normal normal 10% radish Swell weakness 3Microorganism 3% by weight + grain gourd 57% by weight + brown sugar 40% by weight + water 10 times (30 ℃ 10 days culture)
3%
radish
normal
normal 5% radish normal normal 10% radish normal weakness

Referring to Table 1, the fermentation broth used in the present invention is the most effective fermentation broth.

Experimental results of Table 1 ① ~ ⑨ As in experiments, microorganisms { Saccharomyces cerevisiae-> Purchasing method: Daejong Corporation, 911-1, Sinjeong 5-dong, Yangcheon-gu, Seoul, TEL. 02-2606-3052, homepage www.dienzyme.com} When the amount is large (5% to 10% of the ratio of cement weight), the swelling phenomenon occurs in the curing chamber of the cement-containing molding. If the amount of microorganisms is small (below 5% of the blending ratio of the cement weight), the organic fermentation may not be good, resulting in problems of odor removal and strength when applied to cement-containing moldings.

On the other hand, as in the experiment No. 1 of Table 1, the microorganism is added only a small amount and the addition of brown sugar to promote the fermentation rate is faster fermentation rate. At this time, when the fermentation broth produced by the second experiment is blended 3% to 5% of the cement weight in the cement slurry can be produced the best cement-containing molding.

That is, as shown in Table 1, the fermentation broth produced by the second experiment, 3% by weight of microorganisms ( Saccharomyces cerevisiae ), and 57% by weight of grain gourds (rice bran, soybean meal, brewing gourd, vegetal gourd, Jeonbuk gourd, etc.) And, after mixing 40% by weight of brown sugar to produce a mixture, the resulting mixture is mixed with water corresponding to 10 times the weight of the mixture is produced through the process of fermentation at room temperature 30 ℃ for 7 days to 10 days. At this time, the fermentation broth has a golden color, and becomes a perfect fermentation broth mixed with a slight smell of rice wine along with a sweet smell.

In addition, when the fermentation broth is blended 3% to 5% in the cement slurry, as shown in Table 1, the odor present in the cement slurry disappears and the harmful components in the cement slurry are neutralized.

Subsequently, the cement slurry containing the fermentation broth is placed in a mold or a molding mold and then cured. This process follows a conventional process as it is.

The cement-containing molded article thus formed has the following effects.
Table 2 below is a comparison table for analyzing the harmful components of the conventional cement-containing moldings curing the existing cement concrete slurry and the cement-containing moldings cured by adding the fermentation broth according to the present invention to the cement concrete slurry. At this time, the mixing ratio of cement + (sand, aggregate) + water is 1: 3: 1, it is cured for 30 days.

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Item

Standard value (soil)
Conventional cement-containing moldings
5% application of fermentation broth
Cement-containing moldings
salt
(Nacl)

1.0% or less

0.5%-1.5%
0.5%-0.7% arsenic 25mg / kg or less 40mg / kg ~ 60mg / kg 20mg / kg ~ 30mg / kg Cadmium Less than 5mg / kg 8mg / kg ~ 10mg / kg 5mg / kg ~ 6mg / k Mercury Less than 2mg / kg 0.1mg / kg ~ 4mg / kg 0.09mg / kg ~ 2mg / kg lead Less than 150mg / kg 120mg / kg ~ 170mg / kg 117mg / kg ~ 130mg / kg chrome Less than 300mg / kg 640mg / kg ~ 500mg / kg 299mg / kg ~ 300mg / kg Copper 500mg / kg or less 320mg / kg ~ 500mg / kg 310mg / kg ~ 400mg / kg zinc 900mg / kg or less 850mg / kg ~ 1000mg / kg 800mg / kg ~ 900mg / kg nickel Less than 50mg / kg 45mg / kg ~ 70mg / kg 40mg / kg ~ 50mg / kg

Looking at the Table 2, the conventional cement-containing moldings currently exceed most soil contamination standards, but the cement-containing moldings added with the fermentation broth according to the present invention can be seen to be close to the soil reference value, the cement containing according to the present invention The moldings can be seen as much more environmentally friendly than conventional cement concrete.

In addition, when the fermentation broth is added to the cement slurry, odor reduction effect, neutralization of harmful substances, harmful substances decomposition effect, the final decomposition function of organic substances.

Table 3 below is a table showing the fish survival in the cement-containing moldings curing the existing cement concrete slurry and the cement-containing molding in which the fermentation broth according to the present invention is added to the cement concrete slurry. Experimental data were obtained through 20 cement-containing moldings, 20 cement-containing moldings containing 5% fermentation broth according to the present invention, 10 goldfish in each tank, and oxygen supply to each tank.

Survival Fermented liquid applied concrete Existing Cement Concrete Oxygen
supply 1 day feed
supply Survival Oxygen supply Daily feed Survival 24 hours supply 1 supply per day 10 supply 1 supply per day 0 30 days supply 1 supply per day 10 supply 1 supply per day 0 180 days supply 1 supply per day 10 supply 1 supply per day 0 300 days supply 1 supply per day 10 supply 1 supply per day 0 600 days supply 1 supply per day 10 supply 1 supply per day 0 1200 days supply 1 supply per day 10 supply 1 supply per day 0

Referring to Table 3, in the conventional cement-containing molding, all 10 goldfish were killed in 24 hours, and in the cement-containing molding to which the fermentation broth according to the present invention was added, it was found that they survived after 4 years. have.

This is because conventional cement-containing moldings contain a large amount of sodium hydroxide (NaOH), goldfish are difficult to survive due to sodium hydroxide dissolved in water, whereas the cement-containing molding according to the present invention is a fermentation solution of sodium hydroxide contained in cement This is because it can play a role in neutralizing the goldfish can survive safely.

That is, the fermentation broth neutralizes and decomposes sodium hydroxide, so that even if the organism inhabits the cement-containing molding, it is not affected by the harmful substances.

Claims (2)

(a) 3% by weight of Saccharomyces cerevisiae , 57% by weight of grain gourd, and 40% by weight of brown sugar to form a mixture, and then, the mixture is mixed with water corresponding to 10 times the weight of the mixture, and 7 to 30 ° C at room temperature. Mixing the liquid fermentation broth produced by fermentation for 10 days to the cement slurry at 3% to 5% by weight of the cement slurry; (b) forming a cement slurry mixed with the fermentation broth of step (a) and curing the cement-containing molding product containing the fermentation broth, characterized in that it comprises the step of curing. The method of claim 1, The cement slurry is a cement mortar slurry mixed with cement, sand and water or a cement concrete slurry mixed with cement, sand, water and gravel.