KR100987118B1 - Method of manufacturing cement with waterproof property - Google Patents

Method of manufacturing cement with waterproof property Download PDF

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KR100987118B1
KR100987118B1 KR1020100058066A KR20100058066A KR100987118B1 KR 100987118 B1 KR100987118 B1 KR 100987118B1 KR 1020100058066 A KR1020100058066 A KR 1020100058066A KR 20100058066 A KR20100058066 A KR 20100058066A KR 100987118 B1 KR100987118 B1 KR 100987118B1
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cement
particle size
particles
shear
powder
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KR1020100058066A
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Korean (ko)
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오덕균
이재현
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에스피몰탈 주식회사
(주)청우종합건축사사무소
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00Hydraulic cements
    • C04B7/34Hydraulic lime cements; Roman cements ; natural cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/60Agents for protection against chemical, physical or biological attack
    • C04B2103/65Water proofers or repellants

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

PURPOSE: A manufacturing method of cement is provided to improve the compressive strength of the cement by optimizing the content of calcium oxide and calcium carbonate, without using a functional additive. CONSTITUTION: A manufacturing method of cement with the waterproof property comprises the following steps: drying washed shells in 60~80 deg C, and crushing in to shear particle pulverulent bodies; supplying argon gas to the shear particle pulverulent bodies of crushed shells inside a kiln in 700~800 deg C to oxidizing the surface of the bodies into calcium oxide; crushing the oxidized shear particle pulverulent bodies; and uniformly mixing 10 parts of shear particle pulverulent bodies by weight with 350~450 parts of cement by weight.

Description

방수능이 일체화된 시멘트의 제조방법{Method of manufacturing cement with waterproof property}Method of manufacturing cement with waterproof property

본 발명은 방수능이 일체화된 시멘트의 제조방법에 관한 것으로서, 더욱 상세하게는 종래의 시멘트 혼합물에 이용되는 각종 기능성 첨가재를 별도로 사용하지 아니하고, 방수성능과 시공후 압축강도가 우수한 방수능이 일체화된 시멘트의 제조방법에 관한 것이다.The present invention relates to a method of manufacturing cement having integrated waterproof performance, and more particularly, it does not separately use various functional additives used in conventional cement mixtures, and the waterproof performance and the waterproof performance excellent in compressive strength after construction are integrated. It relates to a method for producing cement.

종래에 콘크리트, 시멘트에 사용되는 첨가제로 방수제, 조기 강도 촉진제와 같은 기타의 충진재가 있었으나, 그 효과가 단일 목적에 그쳤고 복합적인 효과를 얻고자 할 때에는 이들을 둘 이상 혼합하여 그 사용량이나 혼합방법이 복잡할 뿐만 아니라, 어떤 경우에는 부반응이 일어나는 등의 문제가 있었다.Conventionally, there were other fillers such as waterproofing agents and early strength accelerators as additives used in concrete and cement, but the effect was only for a single purpose, and in order to obtain a complex effect, two or more of them were mixed to make a complicated use or mixing method. In addition, there were problems such as side reactions in some cases.

또한, 시멘트, 콘크리트는 특수한 경우를 제외하고는 골재로서 천연모래 또는 자갈을 혼합하여 사용함이 일반적인데 이와 같은 골재는 그 산지에 따라 입도가 달라져 이와 같은 골재를 사용하여 시멘트, 콘크리트를 제조할 때에는 골재 사이에 공극이 생기는 문제가 발생하여 기계적 강도에 악영향을 미치고 있었다.In addition, cement and concrete are generally used by mixing natural sand or gravel as aggregates, except for special cases. Such aggregates have different particle sizes depending on the place of origin. There was a problem of voids in between, adversely affecting the mechanical strength.

한편, 이와 같은 시멘트, 콘크리트의 공극을 감소시키기 위하여 진동법, 원심법 등 다양한 가공법을 사용하여 공극을 조절하여 강도를 증대시키는 효과를 얻기도 하였으나 이와 같은 방법은 막대한 시설이 소요되므로 원가가 비싸다는 문제점이 있었다.On the other hand, in order to reduce the voids of cement and concrete, various processing methods such as vibration and centrifugal methods are used to obtain the effect of increasing the strength by adjusting the voids, but such a method requires expensive facilities, which is expensive. There was a problem.

본 발명이 해결하고자 하는 기술적 과제는 종래의 시멘트 혼합물에 이용되는 각종 기능성 첨가재를 별도로 사용하지 아니하고, 방수성능과 시공후 압축강도가 우수한 방수능이 일체화된 시멘트의 제조방법을 제공하는 것이다.The technical problem to be solved by the present invention is to provide a method of manufacturing cement which is integrated with a waterproof performance excellent in waterproof performance and compressive strength after construction without using a variety of functional additives used in the conventional cement mixture.

본 발명은 상술한 기술적 과제를 해결하기 위하여, 패각(貝殼)을 세척후 60 내지 80℃ 분위기에서 건조하고 평균입도 200 내지 500㎛ 크기인 전단입자 분말체로 준비하는 S1단계와 아르곤기체를 0.01 내지 0.04ft3/min 속도로 공급하며 700 내지 800℃ 온도가 유지된 소성로에서 상기 전단입자의 표면을 산화칼슘(CaO)으로 산화시키는 S2단계와 상기 산화된 전단입자 분말체를 평균입도 20 내지 50 ㎛인 입자 분말체로 분쇄하는 S3단계 및 상기 입자 분말체 10 중량부에 대하여 평균입도 20 내지 50 ㎛인 입자로 구성된 시멘트 350 내지 450 중량부와 균일하게 혼합하는 S4단계를 포함하는 것을 특징으로 하는 방수능이 일체화된 시멘트의 제조방법을 제공한다.The present invention, in order to solve the above technical problem, after washing the shell (건조) and dried in an atmosphere of 60 to 80 ℃ and prepared with a shear particle powder having an average particle size of 200 to 500㎛ size S1 and argon gas 0.01 to 0.04 S2 step of oxidizing the surface of the shear particles with calcium oxide (CaO) in a firing furnace maintained at a temperature of 700 to 800 ℃ and supplied at a rate of ft 3 / min and the average particle size of the particle size of 20 to 50 ㎛ S3 step of pulverizing into a particle powder and S4 step of uniformly mixing with 350 to 450 parts by weight of cement composed of particles having an average particle size of 20 to 50 ㎛ with respect to 10 parts by weight of the particle powder It provides a method for producing integrated cement.

본 발명의 일 실시예에 의하면, 상기 세척은 pH 4 내지 5 산성수용액 분위기에서 수행될 수 있다.According to one embodiment of the present invention, the washing may be performed in an acidic pH 4 to 5 aqueous solution atmosphere.

본 발명의 다른 실시예에 의하면, 상기 S3단계에서의 탄산칼슘과 산화칼슘의 상대적인 비율은 중량비로 1:0.5 내지 1:1.5일 수 있다.According to another embodiment of the present invention, the relative ratio of calcium carbonate and calcium oxide in step S3 may be 1: 0.5 to 1: 1.5 by weight.

본 발명의 또 다른 실시예에 의하면, 상기 S3단계에서의 입자와 상기 S4단계에서의 시멘트 분말은 24㎛체 통과량이 45% 이상인 입도분포와 블레인 공기투과장치에 의한 비표면적 1500 내지 2500 ㎠/g의 분말도를 가질 수 있다.According to another embodiment of the present invention, the particles in the step S3 and the cement powder in the step S4 has a specific surface area of 1500 to 2500 cm 2 / g by a particle size distribution and a bladder air permeation device having a passage volume of 24 μm or more and 45% or more. It may have a powder degree of.

본 발명에 따르는 방수능이 일체화된 시멘트의 제조방법에 의한 시멘트는 방수성능과 시공후 압축강도가 우수한 효과를 가진다.Cement according to the method of manufacturing a cement having waterproof performance according to the present invention has an excellent waterproof performance and compressive strength after construction.

도 1은 본 발명에 따르는 제조예 1과 비교예 1에 의한 시멘트 혼합물을 시간이 경과함에 따라, 6개월 부터 12개월까지, 6년까지의 압축강도를 측정하여 그래프화한 그림이다. 1 is a graph of the cement mixture measured according to the present invention Preparation Example 1 and Comparative Example 1 by measuring the compressive strength from 6 months to 12 months, up to 6 years with time.

이하에서는 본 발명을 더욱 상세하게 설명한다. 그러나, 이는 어디까지나 본 발명의 이해를 돕기 위함이며 어떠한 경우에도 본 발명의 기술적 범위를 이에 제한하여 해석되어서는 아니된다.Hereinafter, the present invention will be described in more detail. However, this is for the purpose of understanding the present invention only, and in no case should it be interpreted to limit the technical scope of the present invention.

먼저, 패각(貝殼)을 세척후 60 내지 80℃ 분위기에서 건조하고 평균입도 200 내지 500㎛ 크기인 전단입자 분말체로 준비하는 S1단계를 살펴본다.First, after washing the shell (1) to look at the step S1 to dry in an atmosphere of 60 to 80 ℃ and prepare a shear particle powder having an average particle size of 200 to 500㎛ size.

상기 패각은 바지락, 꼬막, 굴껍데기 등과 같이 바다에서 서식하는 생물의 껍질을 말하는 것으로 주요 구성성분 탄산칼슘(CaCO3)와 각종 염류, 미네랄로 이루어져 있는데, 상기 탄산칼슘은 석회암이나 방해석, 아라고나이트(AragonIte)의 주성분과 화합물은 동일하나 다른 물성을 가지고 있는 것으로 알려져 있다.The shell is a shell of a creature inhabiting the sea such as clam, cockle, oyster shell, etc. The main component is calcium carbonate (CaCO 3 ), various salts and minerals, and the calcium carbonate is limestone, calcite, aragonite ( The main components and compounds of AragonIte) are known to have the same physical properties.

또한, 상기 패각은 각종 유기물들이 존재하므로 이를 제거하기 위하여 세척을 하는데, 세척은 통상 물을 이용할 수도 있으나 약한 산성으로 pH 4 내지 5 수용액에서 이루어지는 것이 바람직한데, 여기서 산 물질로는 염산을 사용할 수 있다. 만일 산도가 상기 범위 미만이면, 패각 표면에 조도(roughness)를 증가시켜 후공정 소성에서 산화(oxidation)반응이 과하게 진행될 수 있으며 반대로 상기 범위를 초과하면, 유기물 제거가 비효율적일 수 있다.In addition, the shell is washed in order to remove it because there are a variety of organic materials, washing may be generally used water, but is preferably made in a pH 4 to 5 aqueous solution with a weak acid, hydrochloric acid may be used as the acid material. . If the acidity is less than the above range, the roughness on the shell surface may be increased, so that oxidation reaction may proceed excessively in post-process firing, and if the above range is exceeded, organic matter removal may be inefficient.

이어서, 상기 세척 공정이 종료된 후에 물로서 수차례 헹굼(rinsing) 공정을 추가할 수 있음은 당연하다.Subsequently, it is natural to add a rinsing process several times with water after the washing process is finished.

또한, 상기 건조는 60 내지 80℃ 분위기에서 건조로의 내부로 열풍을 조사하면서 상기 패각을 프로펠러로 회전시키며 수행되는데, 만일 상기 범위 미만이면 건조시간이 과하여 제조상 비효율적일 수 있으며, 반대로 80℃를 초과하면, 패각표면에 오염이 발생할 수 있다.In addition, the drying is carried out by rotating the shell with a propeller while irradiating hot air into the interior of the drying furnace in an atmosphere of 60 to 80 ℃, if less than the above range may be inefficient in manufacturing due to excessive drying time, on the contrary, if it exceeds 80 ℃ In addition, contamination may occur on the shell surface.

아울러, 상기 건조이후에 상기 패각을 분쇄하게 되는데, 분쇄되는 전단입자의 평균입도 200 내지 500㎛ 크기가 되게 한다. 만일 , 상기 범위가 하한치 미만이면, 후공정 소성에서 패각의 탄산칼슘이 모두 산화되어 산화칼슘으로 될 우려가 있으며, 반대로 상기 범위를 초과하면 산화칼슘의 비율이 낮아져서 시공후 시멘트의 강도가 저하될 수 있다.In addition, the shell is to be pulverized after the drying, the average particle size of the crushed shear particles to 200 to 500㎛ size. If the above range is less than the lower limit, all of the calcium carbonate in the shell may be oxidized to become calcium oxide during post-process firing. On the contrary, if the above range is exceeded, the ratio of calcium oxide may be lowered, thereby decreasing the strength of cement after construction. have.

또한, 상기 분쇄는 통상의 분쇄기를 이용할 수 있으나, 바람직하게는 튜브밀(tube mill)이나 싸이클론밀(cyclone mill)을 사용할 수 있다.In addition, the pulverization may use a conventional pulverizer, preferably a tube mill or a cyclone mill may be used.

한편, 아르곤기체를 0.01 내지 0.04ft3/min 속도로 공급하며 700 내지 800℃ 온도가 유지된 소성로에서 상기 전단입자의 표면을 산화칼슘(CaO)으로 산화시키는 단계를 살펴본다.Meanwhile, the step of oxidizing the surface of the shear particles with calcium oxide (CaO) in a kiln with argon gas at a rate of 0.01 to 0.04 ft 3 / min and maintaining a temperature of 700 to 800 ° C. will be described.

상기 아르곤기체(argon gas)는 불활성으로서 산화반응시 급격한 반응을 방지하는 분위기기체 역할을 하는데, 이때 공급되는 양은 0.01 내지 0.04ft3/min(feet3/분(分))로서 만일 하한치 미만이면 분위기 기체의 역할이 미진하며, 반대로 상한치를 초과하면, 탄산칼슘이 산화칼슘으로 반응하는 과정에서 발생되는 이산화탄소(CO2)의 발생을 방해하여 산화반응의 효율이 저감될 수 있다.The argon gas is inert and serves as an atmosphere gas to prevent a sudden reaction during the oxidation reaction, in which the amount supplied is 0.01 to 0.04 ft 3 / min (feet 3 / min) if the atmosphere is less than the lower limit. If the role of the gas is insufficient, on the contrary, if the upper limit is exceeded, the efficiency of the oxidation reaction may be reduced by preventing the generation of carbon dioxide (CO 2 ) generated during the reaction of calcium carbonate with calcium oxide.

또한, 상기 소성로의 온도는 700 내지 800℃가 바람직한데, 만일 700℃ 미만이면, 산화반응의 효율이 저감될 수 있고, 반대로 800℃를 초과하면 과도한 반응으로 산화칼슘이 증가되어 본 발명에 따르는 시멘트의 방수능에 저해될 수 있다.In addition, the temperature of the kiln is preferably 700 to 800 ℃, if less than 700 ℃, the efficiency of the oxidation reaction can be reduced, on the contrary, if it exceeds 800 ℃ the calcium oxide is increased by an excessive reaction cement according to the present invention May impair its waterproofing ability.

여기서, 상기 소성로에서 상기 전단입자의 표면을 산화시키는 것이 바람직한데, 이는 본 발명에 따르는 시멘트의 방수능을 확보함과 동시에 강도를 구현하기 위한 것으로 표면이 산화된 전단입자는 후공정에서 미세하게 분쇄되어 매우 균일한 분포를 가지는 탄산칼슘과 산화칼슘의 입자를 제조할 수 있게 된다.Here, it is preferable to oxidize the surface of the shear particles in the firing furnace, which is to ensure the waterproofing ability of the cement according to the present invention and at the same time to implement the strength, the surface particles are oxidized shear particles finely crushed in a later step This makes it possible to produce particles of calcium carbonate and calcium oxide having a very uniform distribution.

또한, 상기 탄산칼슘과 산화칼슘의 상대적인 비율은 중량비로 1:0.5 내지 1:1.5가 바람직한데, 만일 상기 하한치 미만이면, 방수성능을 확보할 수 있으나, 본 발명에 따르는 시멘트의 강도가 저감될 수 있으며, 반대로 상한치를 초과하면 강도를 증가시킬 수는 있으나, 방수능이 저하되는 문제가 생길 수 있다.In addition, the relative ratio of the calcium carbonate and calcium oxide is preferably 1: 0.5 to 1: 1.5 by weight ratio, if less than the lower limit, it is possible to ensure the waterproof performance, the strength of the cement according to the invention can be reduced On the contrary, if the upper limit is exceeded, the strength may be increased, but the water resistance may be degraded.

다음으로, 상기 산화된 전단입자를 평균입도 20 내지 50 ㎛로 분쇄하는 단계를 살펴본다.Next, look at the step of grinding the oxidized shear particles to an average particle size of 20 to 50 ㎛.

튜브밀과 같은 분쇄기로 상기 산화된 전단입자를 투입하여 분쇄되고, 미세하게 분쇄되지 아니한 입자는 다시 분쇄기로 재투입되어 분쇄공정이 반복된다. 상기 분쇄기를 통하여 일정 크기 범위 이내로 분쇄된 분말은 메인 백필터 백필터(bag filter)에서 포집되어 입자가 준비된다.The oxidized shearing particles are introduced into a mill such as a tube mill, and then pulverized. Particles that are not finely ground are again fed into the mill, and the milling process is repeated. The powder pulverized within a predetermined size range through the grinder is collected in a main bag filter bag filter to prepare particles.

또한, 상기 입자는 탄산칼슘과 산화칼슘이 혼재된 성상을 가지는 것으로 방수능과 강도를 부여하게 된다.In addition, the particles have a mixture of calcium carbonate and calcium oxide to impart waterproofing performance and strength.

여기서, 상기 평균입도 20 내지 50 ㎛인 입자는 24㎛체 통과량이 45% 이상인 입도분포와 블레인 공기투과장치에 의한 비표면적 1500 내지 2500 ㎠/g의 분말도를 가진다.Here, the particles having an average particle size of 20 to 50 μm have a particle size distribution having a passage amount of 45 μm or more and a powder degree of 1500 to 2500 cm 2 / g with a specific surface area by the air blower.

만일, 상기 평균입도가 하한치 미만이면, 시멘트, 물과 함께 교반할 때 많은 물이 필요하고, 유동성이 저하될 수 있으며, 반대로 상한치를 초과하면 강도와 방수능이 악화될 수 있다. If the average particle size is less than the lower limit, a lot of water is required when stirring together with cement and water, the fluidity may be lowered, and if the upper limit is exceeded, strength and waterproofing performance may deteriorate.

다음으로, 상기 입자분말체 10 중량부에 대하여 평균입도 20 내지 50 ㎛인 입자로 구성된 시멘트 350 내지 450 중량부와 균일하게 혼합하는 단계를 살펴본다.Next, the step of uniformly mixing with 350 to 450 parts by weight of cement composed of particles having an average particle size of 20 to 50 ㎛ with respect to 10 parts by weight of the particle powder.

상기 입자분말체 10 중량부에 대하여 시멘트 350 내지 450 중량부를 사용하게 되는데, 만일 상기 하한치 미만이면, 유동성과 내구성, 부착성이 감소될 수 있으며, 반대로 상한치를 초과하면 방수능과 강도가 저감될 수 있다.The cement powder is used in 350 to 450 parts by weight with respect to 10 parts by weight of the powder, if less than the lower limit, fluidity and durability, adhesion can be reduced, on the contrary, if the upper limit is exceeded, waterproof performance and strength can be reduced. have.

또한, 상기 시멘트를 구성하는 입자는 튜브밀과 같은 분쇄기에서 앞서 설명한 반복 분쇄공정에 의하여 준비되어 평균입도가 20 내지 50 ㎛이고, 24㎛체 통과량이 45% 이상인 입도분포와 블레인 공기투과장치에 의한 비표면적 1500 내지 2500 ㎠/g의 분말도인 특징을 가지는데, 이는 탄산칼슘과 산화칼슘이 혼재된 성상을 가지는 입자 분말체와의 혼화성을 증가시키고, 시멘트의 입자들 사이에 형성된 공극을 메우는(packing) 효율을 증가시키기 위함이다.In addition, the particles constituting the cement are prepared by a repeat milling process described above in a mill such as a tube mill, and have an average particle size of 20 to 50 µm, a particle size distribution having a passage amount of 24 µm or more and 45% or more, and a ratio due to the air blower. It is characterized by a powder degree of 1500 to 2500 cm 2 / g surface area, which increases the miscibility with the particle powder having a mixed state of calcium carbonate and calcium oxide, filling the voids formed between the particles of the cement ( This is to increase the packing efficiency.

실시예 1Example 1

먼저, 바지락, 꼬막, 굴껍데기으로 구성된 패각무더기를 염산수용액(pH 4)에 침지하여 1시간동안 교반하여 유기물을 산화시킨 후 다량의 물로 반복하여 세척하고 IR(적외선)건조기에 투입하여 80℃ 분위기로 2시간동안 건조한 후 분쇄기에 투입하여 평균입도 250㎛ 크기로 분쇄하여 전단입자 분말체를 준비하였다. 다음으로, 소성로의 온도를 800℃로 세팅하고, 아르곤 기체를 0.02ft3/min 속도로 공급하며 상기 전단입자의 표면을 산화칼슘(CaO)으로 산화시켰다. 다음으로, 상기 산화된 전단입자 분말체를 튜브밀에 투입하여 평균입도 24.9 ㎛이고, 24㎛체 통과량이 45.9%인 입도분포와 블레인 공기투과장치에 의한 비표면적 1906 ㎠/g의 분말도를 가지는 입자 분말체가 되도록 분쇄하였다. 다음으로, 상기 입자 분말체와 평균입도 25 ㎛인 입자로 구성된 시멘트를 중량비로 1:40으로 혼합하되, 균일성을 부여하기 위하여 60rpm 회전속도로 2시간동안 교반하여 본 발명에 따르는 방수능이 일체화된 시멘트를 제조하였다.First, the shell pile consisting of clam, cockle, and oyster shell was immersed in aqueous hydrochloric acid solution (pH 4), stirred for 1 hour to oxidize the organics, washed repeatedly with a large amount of water, and put into an IR (infrared) dryer, and then heated to 80 ° C. After drying for 2 hours in a pulverizer it was ground to an average particle size of 250㎛ size to prepare a shear particle powder. Next, the temperature of the kiln was set to 800 ° C., argon gas was supplied at a rate of 0.02 ft 3 / min, and the surface of the shear particles was oxidized with calcium oxide (CaO). Next, the oxidized shear particle powder was put into a tube mill and had an average particle size of 24.9 μm, a particle size distribution having a flow rate of 4 μm of 24 μm, and a specific surface area of 1906 cm 2 / g by a blame air permeation device. It grind | pulverized so that it might become particle powder. Next, while mixing the cement powder consisting of the particle powder and the particles having an average particle size of 25 ㎛ in a weight ratio of 1:40, in order to give uniformity, stirring at 60 rpm rotation speed for 2 hours to integrate the waterproofing capability according to the present invention. Cement was prepared.

제조예 1Preparation Example 1

상기 실시예에 의하여 제조된 방수능이 일체화된 시멘트 60㎏중에 플라이애쉬 15㎏중, 고로스래그분말 25㎏중, 천연모래 20㎏중 및 물 5㎏중을 첨가하고 교반하여 두께 20㎝의 콘크리트 각편을 성형하여 건조하였다.In 60 kg of cement having integrated waterproof ability according to the above embodiment, 15 kg of fly ash, 25 kg of high-loss rag powder, 20 kg of natural sand and 5 kg of water were added and stirred, and the concrete was 20 cm thick. Each piece was molded and dried.

비교예 1Comparative Example 1

통상 포틀랜드시멘트 60㎏중에 플라이애쉬 15㎏중, 고로스래그분말 25㎏중, 천연모래 20㎏중 및 물 5㎏중을 첨가하고 교반하여 두께 20㎝의 콘크리트 각편을 성형하여 건조하였다.In 60 kg of Portland cement, 15 kg of fly ash, 25 kg of high-loss rag powder, 20 kg of natural sand and 5 kg of water were added and stirred to form a concrete piece of 20 cm in thickness and dried.

실험예Experimental Example

상기 제조예 1과 비교예 1에 의한 각편 샘플(sample)에 대하여 방수능과 압축강도를 측정하여 각각 표 1과 도 1에 나타내었다.Water resistance and compressive strength of each piece sample according to Preparation Example 1 and Comparative Example 1 were measured and shown in Table 1 and FIG. 1, respectively.

구분division 실험방법Experiment method 실험결과Experiment result 제조예 1Preparation Example 1 KS F 4002에 따라 흡수율 측정Absorption rate measurement according to KS F 4002 0.7%0.7% 비교예 1Comparative Example 1 KS F 4002에 따라 흡수율 측정Absorption rate measurement according to KS F 4002 2%2%

<표 1>를 참조하면, 본 발명의 제조방법에 의한 시멘트가 비교예 1보다 약 30%정도의 방수성능이 개선됨을 알 수 있으며, 도 1을 참조하면, 본 발명의 제조방법에 의한 시멘트가 압축강도 면에서 종래 시멘트보다 약 10% 이상 증대되었음을 알 수 있어, 본 발명의 시멘트가 우수함을 이해할 수 있다.Referring to <Table 1>, it can be seen that the cement by the manufacturing method of the present invention improves the waterproofing performance by about 30% compared to Comparative Example 1. Referring to FIG. 1, the cement by the manufacturing method of the present invention is In terms of compressive strength it can be seen that increased by about 10% or more than the conventional cement, it can be understood that the cement of the present invention is excellent.

Claims (4)

패각(貝殼)을 세척후 60 내지 80℃ 분위기에서 건조하고 평균입도 200 내지 500㎛ 크기인 전단입자 분말체로 준비하는 S1단계;
아르곤기체를 0.01 내지 0.04ft3/min 속도로 공급하며 700 내지 800℃ 온도가 유지된 소성로에서 상기 전단입자의 표면을 산화칼슘(CaO)으로 산화시키는 S2단계;
상기 산화된 전단입자 분말체를 평균입도 20 내지 50 ㎛인 입자 분말체로 분쇄하는 S3단계; 및
상기 입자 분말체 10 중량부에 대하여 평균입도 20 내지 50 ㎛인 입자로 구성된 시멘트 350 내지 450 중량부와 균일하게 혼합하는 S4단계;를 포함하는 것을 특징으로 하는 방수능이 일체화된 시멘트의 제조방법.
S1 step of washing the shell (貝殼) after drying in an atmosphere of 60 to 80 ℃ and preparing a shear particle powder having an average particle size of 200 to 500㎛ size;
Supplying argon gas at a rate of 0.01 to 0.04 ft 3 / min and oxidizing the surface of the shear particles to calcium oxide (CaO) in a firing furnace maintained at a temperature of 700 to 800 ° C .;
S3 step of grinding the oxidized shear particle powder into a particle powder having an average particle size of 20 to 50 ㎛; And
S4 step of uniformly mixing with 350 to 450 parts by weight of the cement composed of particles having an average particle size of 20 to 50 ㎛ with respect to 10 parts by weight of the particle powder body.
제 1 항에 있어서,
상기 세척은 pH 4 내지 5 산성수용액 분위기에서 수행되는 것을 특징으로 하는 방수능이 일체화된 시멘트의 제조방법.
The method of claim 1,
The washing is a method of producing a cement having a waterproof capability, characterized in that the pH 4 to 5 is performed in an acidic aqueous solution atmosphere.
제 1 항에 있어서,
상기 S3단계에서의 탄산칼슘과 산화칼슘의 상대적인 비율은 중량비로 1:0.5 내지 1:1.5인 것을 특징으로 하는 방수능이 일체화된 시멘트의 제조방법.
The method of claim 1,
The relative ratio of calcium carbonate and calcium oxide in the step S3 is 1: 0.5 to 1: 1.5 by weight ratio of the production method of the cement having a waterproof capability, characterized in that integrated.
제 1 항에 있어서,
상기 S3단계에서의 입자와 상기 S4단계에서의 시멘트 분말은 24㎛체 통과량이 45% 이상인 입도분포와 블레인 공기투과장치에 의한 비표면적 1500 내지 2500 ㎠/g의 분말도를 가지는 것을 특징으로 하는 방수능이 일체화된 시멘트의 제조방법.
The method of claim 1,
The particles in the step S3 and the cement powder in the step S4 is characterized in that the particle size distribution of the passage amount of 45㎛ more than 45% and the specific surface area 1500 to 2500 cm 2 / g by the air blower Method for producing cement with integrated water repellent.
KR1020100058066A 2010-06-18 2010-06-18 Method of manufacturing cement with waterproof property KR100987118B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3214752B2 (en) 1993-02-05 2001-10-02 株式会社豊田中央研究所 cement
KR20020039408A (en) * 2000-11-21 2002-05-27 이승헌 A filler manufacturing method for cement by using the shells of oysters and filler made thereby
KR20020093204A (en) * 2001-06-07 2002-12-16 한국해양연구원 Solidificator Manufacturing Method with Waste Oyster Shell
KR100937399B1 (en) 2008-03-28 2010-01-18 경남대학교 산학협력단 Method for Preparing Calcium aluminate Clinker by Hydrate-Burning process

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3214752B2 (en) 1993-02-05 2001-10-02 株式会社豊田中央研究所 cement
KR20020039408A (en) * 2000-11-21 2002-05-27 이승헌 A filler manufacturing method for cement by using the shells of oysters and filler made thereby
KR20020093204A (en) * 2001-06-07 2002-12-16 한국해양연구원 Solidificator Manufacturing Method with Waste Oyster Shell
KR100937399B1 (en) 2008-03-28 2010-01-18 경남대학교 산학협력단 Method for Preparing Calcium aluminate Clinker by Hydrate-Burning process

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