KR102179923B1 - Low absorbency Autoclaved Light weight Concrete block and method thereof - Google Patents
Low absorbency Autoclaved Light weight Concrete block and method thereof Download PDFInfo
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- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
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Abstract
본 발명은 신규 발수제 조성물, 이를 이용한 저흡수성 경량 기포 콘크리트 조성물 및 이의 제조방법에 관한 것으로, 구체적으로 본 발명은 디메틸 메틸옥틸 실록산(Dimethyl,methyloctyl siloxane), 디메틸 실록산 하이드록시 터미네이티드(Dimethyl siloxane, hydroxy-terminated) 및 디메틸 실록산 트리메틸실록시 터미네이티드(Dimethyl siloxane,trimethylsiloxy-terminated)을 유효성분으로 포함하는 신규 발수제 조성물 및 상기 발수제 조성물을 함유한 저흡수성 경량기포 콘크리트 조성물에 관한 것이고, 또한 본 발명은, (a) 규사, 생석회, 시멘트, 석고 및 물을 함께 혼합하여 교반하는 단계; (b) 상기 (a) 단계의 혼합물에 알루미늄 분말 및 제1항의 발수제 조성물을 첨가하여 혼합하는 단계; (c) 타설 및 발포하는 단계; 및 (d) 양생하는 단계를 포함하는 저흡수성 경량 기포 콘크리트 블록의 제조방법 및 상기 방법으로 제조된 저흡수성 경량 기포 콘크리트 블록에 관한 것이다.The present invention relates to a novel water repellent composition, a low-absorption lightweight foamed concrete composition using the same, and a method for manufacturing the same.In particular, the present invention relates to dimethyl methyloctyl siloxane, dimethyl siloxane hydroxy terminated (Dimethyl siloxane, hydroxy-terminated) and dimethyl siloxane trimethylsiloxy-terminated (Dimethyl siloxane, trimethylsiloxy-terminated) as an active ingredient, a novel water repellent composition and a low-absorbent lightweight foam concrete composition containing the water repellent composition, and the present invention Silver, (a) mixing and stirring silica sand, quicklime, cement, gypsum and water together; (b) adding and mixing aluminum powder and the water repellent composition of claim 1 to the mixture of step (a); (c) pouring and foaming; And (d) a method of manufacturing a low-absorption lightweight foamed concrete block comprising the step of curing, and to a low-absorption lightweight foamed concrete block produced by the above method.
Description
본 발명은 신규 발수제 조성물을 이용한 저흡수성 경량 기포 콘크리트 블록 및 이의 제조방법에 관한 것이다.The present invention relates to a low-absorption lightweight foamed concrete block using a novel water repellent composition and a method of manufacturing the same.
일반적으로 고온, 고압의 양생으로 생성된 경량기포콘크리트(이하 'ALC(Autoclaved Light weight Concrete)'라 한다) 내부의 발포기공은 ALC 제품에 경량성, 단열성, 내화성 및 가공성 등의 특성을 부여하지만, 그 반면에 흡수성을 높이는 문제점이 있다. 이런 특성을 갖는 ALC를 사용한 건축물의 시공과 표면보호를 위해 사용되는 조적과 미장용 시멘트 몰탈은 ALC 제품의 흡수율에 의해 작업수나 수화수 등이 다소 손실되고, 이런 원인으로 균열발생, 부착력 저하 및 경화불량 등의 물성저하가 발생한다. In general, the foam pores inside the lightweight foamed concrete (hereinafter referred to as'ALC (Autoclaved Light Weight Concrete)') produced by curing at high temperature and high pressure give the ALC product characteristics such as light weight, heat insulation, fire resistance, and workability. On the other hand, there is a problem of increasing the water absorption. The masonry and cement mortar for plastering used for the construction and surface protection of buildings using ALC with these characteristics lose some work water or hydration water due to the absorption rate of the ALC product, resulting in cracks, lower adhesion and hardening. Deterioration of physical properties such as defects occurs.
이에 ALC의 흡수성에 의해 발생되는 미장 몰탈의 부착력 저하, 탈락현상 등을 감소시키고, 제품의 내후성을 증진시킬 수 있는 방법들이 개발되고 있는데, 그 방법으로는, 원료 중에 발수성, 조막성 물질을 혼입해서 발수성능을 부여하는 방법이 있고, 또는 생산된 제품에 발수물질을 도포 및 함침하는 방법 등이 있다. 그러나 ALC에 방수제 등을 함침 도포하는 방법은 현장시공 중 절단된 부위가 발수성을 갖지 못하는 단점이 있어 현재로서는 주로 원료 중에 발수성 물질을 첨가하는 방법이 적용되고 있다. 그러나 ALC 제조 시, 발수성이나 조막성 물질을 첨가하여 ALC의 흡수성을 감소시키는 종래 기술의 경우, 실리콘계 오일(0.1 내지 5중량부)과 음이온계 계면활성제를 병용 첨가하는 방법이 있고(일본특허 공개소 57-61657호), 실세스키옥키산[(RSiO2/2 )n R : CH3 , C2H5 , C3H7 , C2H3 , C4H5 ], 파라핀계 오일 등을 적게는 0.1 중량부에서 많게는 15 중량부까지 선택 사용하는 방법(일본특허공개소 56-120561호)이 있으나, 이러한 종래 기술의 경우 슬러리상의 ALC 조합원료의 경화속도를 크게 지연시켜 생산성을 저하시킬 뿐만 아니라, ALC의 강도까지 저하시키는 문제점이 있다.Accordingly, methods are being developed to reduce the adhesion and fall off of the plastering mortar caused by the absorption of ALC, and to improve the weather resistance of the product. The method includes mixing water-repellent and film-forming substances in raw materials. There is a method of imparting water-repellent performance, or a method of applying and impregnating a water-repellent material to the produced product. However, the method of impregnating ALC with a waterproofing agent or the like has a disadvantage in that the cut part during field construction does not have water repellency, so a method of adding a water-repellent material to the raw material is mainly applied at present. However, in the case of the prior art for reducing the absorption of ALC by adding a water repellent or film-forming material during ALC production, there is a method of adding a silicone oil (0.1 to 5 parts by weight) and an anionic surfactant in combination (Japanese Patent Publication 57-61657), Silcesquioxic acid [(RSiO2/2)n R: CH3, C2H5, C3H7, C2H3, C4H5 ], paraffinic oil, etc. from 0.1 parts by weight to 15 parts by weight. (Japanese Patent Laid-Open Publication No. 56-120561), but in the case of such a conventional technology, there is a problem in that the curing speed of the slurry-like ALC combination material is significantly delayed, thereby reducing productivity as well as the strength of ALC.
그러므로 이러한 종래 문제점을 해소하면서 경량 기포 콘크리트의 흡수율을 개선할 수 있는 새로운 기술의 개발이 필요한 실정이다. Therefore, there is a need to develop a new technology capable of improving the absorption rate of lightweight aerated concrete while solving these conventional problems.
이에 본 발명자들은 흡수율 저감효과가 우수하고 경제성이 우수한 신규한 발수제 조성물을 제조하였고, 이를 이용하여 흡수성이 효과적으로 저감된 경량 기포 콘크리트 블록을 제조함으로써 본 발명을 완성하였다.Accordingly, the present inventors prepared a novel water repellent composition having excellent water absorption rate reduction effect and excellent economical efficiency, and completed the present invention by manufacturing a lightweight foamed concrete block with effectively reduced water absorption using this.
따라서 본 발명의 목적은 흡수율 저감효과가 우수하고 경제성이 우수한 신규한 발수제 조성물을 제공하는 것이다.Accordingly, an object of the present invention is to provide a novel water repellent composition having excellent absorption rate reduction effect and excellent economical efficiency.
본 발명의 다른 목적은 상기 본 발명의 신규한 발수제 조성물을 이용한 저흡수성 경량 기포 콘크리트 조성물을 제공하는 것이다.Another object of the present invention is to provide a low-absorption lightweight foamed concrete composition using the novel water repellent composition of the present invention.
본 발명의 다른 목적은 저흡수성 경량 기포 콘크리트 블록의 제조방법을 제공하는 것이다.Another object of the present invention is to provide a method of manufacturing a lightweight foamed concrete block with low water absorption.
또한, 본 발명의 다른 목적은 본 발명의 방법으로 제조된 15% 이하의 낮은 흡수율을 갖는 저흡수성 경량 기포 콘크리트 블록을 제공하는 것이다.In addition, another object of the present invention is to provide a low-absorption lightweight foamed concrete block having a low water absorption of 15% or less manufactured by the method of the present invention.
상기와 같은 목적을 달성하기 위해 본 발명은, 디메틸 메틸옥틸실록산(Dimethyl,methyloctyl siloxane), 디메틸 실록산 하이드록시 터미네이티드(Dimethyl siloxane, hydroxy-terminated) 및 디메틸 실록산 트리메틸실록시 터미네이티드(Dimethyl siloxane,trimethylsiloxy-terminated)을 유효성분으로 포함하는, 신규 발수제 조성물을 제공한다.In order to achieve the above object, the present invention, dimethyl methyloctyl siloxane (Dimethyl, methyloctyl siloxane), dimethyl siloxane hydroxy-terminated (Dimethyl siloxane, hydroxy-terminated) and dimethyl siloxane trimethylsiloxy terminated (Dimethyl siloxane). It provides a novel water repellent composition containing, trimethylsiloxy-terminated) as an active ingredient.
본 발명의 일실시예에 있어서, 조성물 100중량%에 대해, 상기 디메틸 메틸옥틸 실록산(Dimethyl,methyloctyl siloxane)은 50~70 중량%,상기 디메틸 실록산 하이드록시 터미네이티드(Dimethyl siloxane,hydroxy-terminated)은 20~30 중량% 및 상기 디메틸 실록산 트리메틸실록시 터미네이티드(Dimethyl siloxane,trimethylsiloxy-terminated)은 20~30 중량% 함유되어 있는 것일 수 있다.In one embodiment of the present invention, with respect to 100% by weight of the composition, the dimethyl methyloctyl siloxane is 50 to 70% by weight, and the dimethyl siloxane hydroxy-terminated (Dimethyl siloxane, hydroxy-terminated) Silver may contain 20 to 30% by weight and 20 to 30% by weight of the dimethyl siloxane trimethylsiloxy-terminated.
또한, 본 발명은 규사 50~60 중량부, 생석회 10~16 중량부, 시멘트 22~30 중량부, 석고 2~5 중량부, 알루미늄 분말 0.05~1.00 중량부, 물은 전체 원료량의 65~75 중량부 및 상기 본 발명의 발수제 조성물 0.1~0.3 중량부를 포함하는, 저흡수성 경량 기포 콘크리트 조성물을 제공한다. In addition, the present invention is silica sand 50 to 60 parts by weight, quicklime 10 to 16 parts by weight, cement 22 to 30 parts by weight, gypsum 2 to 5 parts by weight, aluminum powder 0.05 to 1.00 parts by weight, water is 65 to 75 parts by weight of the total raw material amount. It provides a low-absorption lightweight foamed concrete composition comprising parts by weight and 0.1 to 0.3 parts by weight of the water repellent composition of the present invention.
본 발명의 일실시예에 있어서, 상기 저흡수성 경량 기포 콘크리트 조성물은 15%이하의 낮은 흡수율을 갖는 것일 수 있다. In one embodiment of the present invention, the low-absorption lightweight cellular concrete composition may have a low water absorption of 15% or less.
또한, 본 발명은, (a) 규사, 생석회, 시멘트, 석고 및 물을 함께 혼합하여 교반하는 단계; (b) 상기 (a) 단계의 혼합물에 알루미늄 분말 및 상기 본 발명의 발수제 조성물을 첨가하여 혼합하는 단계; (c) 타설 및 발포하는 단계; 및 (d) 양생하는 단계를 포함하는, 저흡수성 경량 기포 콘크리트 블록의 제조방법을 제공한다.In addition, the present invention, (a) mixing and stirring silica sand, quicklime, cement, gypsum and water together; (b) adding and mixing aluminum powder and the water repellent composition of the present invention to the mixture of step (a); (c) pouring and foaming; And (d) it provides a method for producing a low-absorption lightweight foamed concrete block comprising the step of curing.
본 발명의 일실시예에 있어서, 상기 규사는 50~60 중량부, 생석회는 10~16 중량부, 시멘트는 22~30 중량부, 석고는 2~5 중량부, 알루미늄 분말은 0.05~1.00 중량부, 물은 전체원료량의 65~75 중량부 및 상기 본 발명의 발수제 조성물은 0.1~0.3 중량부로 사용하는 것일 수 있다.In one embodiment of the present invention, the silica sand is 50 to 60 parts by weight, quicklime is 10 to 16 parts by weight, cement is 22 to 30 parts by weight, gypsum is 2 to 5 parts by weight, aluminum powder is 0.05 to 1.00 parts by weight , Water may be used in an amount of 65 to 75 parts by weight of the total raw material amount and 0.1 to 0.3 parts by weight of the water repellent composition of the present invention.
본 발명의 일실시예에 있어서, 상기 (d)단계의 양생은 45℃~50℃의 온도에서 3~5시간 동안 1차 양생을 수행하고, 이후 170℃~190℃의 온도에서 9~11기압 조건으로 5~10시간 동안 2차 양생을 수행하는 것일 수 있다.In an embodiment of the present invention, the curing of step (d) is performed at a temperature of 45°C to 50°C for 3 to 5 hours, and then 9 to 11 atm at a temperature of 170°C to 190°C. As a condition, it may be to perform secondary curing for 5 to 10 hours.
나아가 본 발명은 상기 본 발명의 방법으로 제조된 15%이하의 낮은 흡수율을 갖는 저흡수성 경량 기포 콘크리트 블록을 제공한다.Further, the present invention provides a low-absorption lightweight foamed concrete block having a low water absorption of 15% or less manufactured by the method of the present invention.
본 발명은 신규 발수제 조성물, 이를 이용한 저흡수성 경량 기포 콘크리트 블록 및 이의 제조방법에 관한 것으로, 본 발명의 신규 발수제 조성물은 흡수성 저감 효과가 종래 발수제에 비해 월등히 우수하므로, 이를 이용하여 제조된 경량 기포 콘크리트 블록은 표면의 급결 방지 및 형상의 안정성이 우수하여 표면 안정성이 있고, 저흡수성이 우수하여 누수 방지 효과가 높은 특징이 있으며, 우수한 압축강도를 갖는 효과가 있어, 원가절감, 공기단축 및 시공성 향상 효과를 도출할 수 있다.The present invention relates to a novel water-repellent composition, a low-absorption lightweight foamed concrete block using the same, and a method for manufacturing the same, and the novel water-repellent composition of the present invention has a superior water-repellent reduction effect compared to the conventional water-repellent, Blocks have excellent surface stability due to excellent surface stability and shape stability, and are characterized by high water leakage prevention effect due to excellent low water absorption, and have an effect of excellent compressive strength, thereby reducing cost, reducing construction time and improving workability. Can be derived.
도 1은 본 발명의 발수제와 종래 사용되는 일반 ALC에 대한 흡수율 분석 결과를 나타낸 것이다. 이때 도면에서 파란색 "일반"은 비교군으로 일반 발수제를 사용한 군이고 빨간색 "발수"는 본 발명의 발수제 조성물을 사용한 군이다.
도 2는 본 발명의 발수제와 종래 사용되는 일반 ALC의 각기 다른 함수율에 대한 흡수율 분석 결과를 나타낸 것이다.
도 3은 본 발명의 신규 발수제를 이용하여 제조된 경량 기포 콘크리트 블록에 대한 담수 테스트 과정을 나타낸 것이다.
도 4는 본 발명의 신규 발수제를 이용하여 제조된 경량 기포 콘크리트 블록의 누수 방지 효과를 확인한 결과를 나타낸 것이다.1 shows the results of absorption rate analysis for the water repellent of the present invention and conventional ALC. At this time, in the drawing, blue "normal" is a group using a general water repellent as a comparative group, and red "water repellent" is a group using the water repellent composition of the present invention.
Figure 2 shows the water repellent of the present invention and the conventional ALC absorption rate analysis results for different moisture content.
3 shows a freshwater test process for a lightweight foamed concrete block manufactured using the novel water repellent of the present invention.
Figure 4 shows the result of confirming the leakage preventing effect of the lightweight foamed concrete block manufactured using the novel water repellent of the present invention.
일반적으로 콘크리트, 몰탈, 슬레이트 또는 기와지붕의 무기재료 표면은 많은 모세기공으로 형성되어 있다. 따라서, 염해, 동해, 대기 중의 산이나 알칼리 등의 콘크리트 골재반응으로 노후되어 수명이 단축되고 자연환경에 의한 풍화로 부서지기 쉬운 문제가 있다. 이와 같은 다공질 무기재료 노후화 현상의 주원인은 수분의 침투로 발생하는데, 즉, 수분이 침투되면 물에 용해되어 있는 염화이온이 함께 흡수되어 염해가 발생하고, 동절기에는 모세 기공안의 수분이 동결하여 다공질 무기재료가 동파된다. 또한, 침투된 수분은 시멘트 골재와 화학반응이 일어나 알칼리 성분이 표면에 잔류하는 백화현상으로 노후화된다.In general, the surface of inorganic materials of concrete, mortar, slate or tiled roof is formed with many capillaries. Therefore, there is a problem that the lifespan is shortened due to the reaction of concrete aggregates such as salt damage, winter sea, and acid or alkali in the atmosphere, and it is brittle due to weathering due to the natural environment. The main cause of such aging of porous inorganic materials is the penetration of moisture. That is, when moisture penetrates, chloride ions dissolved in water are absorbed together and salt damage occurs. In winter, the moisture in the capillary pores freezes, resulting in porous inorganic material. The material freezes. In addition, the infiltrated moisture undergoes a chemical reaction with the cement aggregate, resulting in aging due to the whitening phenomenon in which alkali components remain on the surface.
따라서 이러한 문제점을 해소하기 위한 방법으로 발수제를 사용하고 있는데, 종래 발수제들의 경우 슬러리상의 콘크리트 조합원료의 경화속도를 크게 지연시켜 생산성을 저하시킬 뿐만 아니라, 강도까지 저하시키는 문제점이 있다.Therefore, a water repellent is used as a method to solve this problem, and conventional water repellents have a problem of significantly delaying the curing speed of the slurry-like concrete combination material, thereby reducing productivity as well as strength.
이에 본 발명자들은 고강도의 특성을 가지며 경제성이 우수하고 흡수율 저감 효과가 높아 발수성이 증진된 새로운 발수제를 연구하던 중, 디메틸 메틸옥틸 실록산(Dimethyl,methyloctyl siloxane), 디메틸 실록산 하이드록시 터미네이티드(Dimethyl siloxane, hydroxy-terminated), 디메틸 실록산 트리메틸실록시 터미네이티드(Dimethyl siloxane,trimethylsiloxy-terminated)을 유효성분으로 포함하는 발수제 조성물이 이러한 우수한 효능이 있음을 확인하였고, 이를 이용하여 저흡수성 경량 기포 콘크리트 블록의 제조 방법을 확립하였다.Accordingly, the inventors of the present invention were researching a new water repellent with improved water repellency due to high strength characteristics, excellent economical efficiency and high absorption rate reduction effect. Dimethyl methyloctyl siloxane, dimethyl siloxane hydroxy terminated (Dimethyl siloxane) , hydroxy-terminated), and dimethyl siloxane trimethylsiloxy-terminated (Dimethyl siloxane, trimethylsiloxy-terminated) as an active ingredient, it was confirmed that the water repellent composition has such excellent efficacy. The manufacturing method was established.
그러므로 본 발명은 디메틸 메틸옥틸 실록산(Dimethyl,methyloctyl siloxane), 디메틸 실록산 하이드록시 터미네이티드(Dimethyl siloxane, hydroxy-terminated), 디메틸 실록산 트리메틸실록시 터미네이티드(Dimethyl siloxane,trimethylsiloxy-terminated) 을 유효성분으로 포함하는 발수제 조성물을 제공함에 특징이 있으며, 바람직하게 상기 발수제 조성물 100중량%에 대해, 상기 디메틸 메틸옥틸 실록산(Dimethyl,methyloctyl siloxane)은 50~70 중량%, 상기 디메틸 실록산 하이드로 터미네이티드(Dimethyl siloxane, hydroxy-terminated)은 20~30중량%, 상기 디메틸 실록산 트리메틸실록시 터미네이티드(Dimethyl siloxane,trimethylsiloxy-terminated)은 20~30 중량% 로 포함된다.Therefore, in the present invention, dimethyl methyloctyl siloxane, dimethyl siloxane hydroxy-terminated, and dimethyl siloxane trimethylsiloxy-terminated are used as active ingredients. It is characterized in providing a water repellent composition comprising as, and preferably, based on 100% by weight of the water repellent composition, the dimethyl methyloctyl siloxane is 50 to 70% by weight, and the dimethyl siloxane hydroterminated (Dimethyl siloxane, hydroxy-terminated) is contained in 20 to 30% by weight, and the dimethyl siloxane trimethylsiloxy-terminated is contained in 20 to 30% by weight.
여기서 상기 디메틸 메틸옥틸 실록산은 ALC블록의 내부 방수 성능을 증진시키는데 역할을 하는 성분으로 흡수율에 제일 큰 영향을 주는 성분으로, 본 발명에서는 디메틸 메틸옥틸실록산이 상기 발수제 조성물에 대해 50~70 중량%로 첨가되는 것이 바람직하다. 이는 50중량% 미만으로 첨가되는 경우, 방수능의 효능을 도출할 수 없으며, 70중량%를 초과하여 첨가하는 경우, 초과 첨가량에 따른 효능의 증진이 나타나지 않는 바, 경제성이 낮아지는 문제점이 있다.Here, the dimethyl methyloctyl siloxane is a component that plays a role in improving the internal waterproof performance of the ALC block, and is the component that has the greatest influence on the absorption rate.In the present invention, dimethyl methyloctylsiloxane is 50 to 70% by weight based on the water repellent composition. It is preferably added. When it is added in an amount of less than 50% by weight, the effect of waterproofing performance cannot be derived, and when it is added in excess of 70% by weight, there is a problem in that economical efficiency is lowered as a bar does not increase the efficacy according to the amount of excess addition.
또한, 디메틸 실록산 하이드록시 터미네이티드는 ALC 블록의 표면 발수력에 영향을 주는 성분으로, 상기 발수제 조성물에 20~30중량%로 포함되는 것이 바람직하다. 20중량% 미만으로 포함되는 경우 목적하는 효과를 나타내지 못하며 30중량%를 초과하게 되는 경우 초과 첨가량에 따른 효능의 증진이 나타나지 않는 바, 경제성이 낮아지는 문제점이 있다.In addition, dimethyl siloxane hydroxy terminate is a component that affects the surface water repellency of the ALC block, and is preferably included in the water repellent composition in an amount of 20 to 30% by weight. When it is contained in an amount of less than 20% by weight, it does not exhibit the desired effect, and when it exceeds 30% by weight, there is a problem of lowering economic efficiency as a bar does not increase the efficacy according to the excess amount.
또한, 디메틸 실록산 트리메틸실록시 터미네이티드는 ALC 블록의 균일한 방수 성능에 영향을 주는 성분이며 각 물질의 혼합시 균일한 분산에 영향을 준다. 상기 성분은 발수제 조성물에 20~30 중량%의 양으로 포함되는 것이 바람직하며, 만일 20중량% 미만으로 첨가될 경우 목적하는 효과를 나타내지 못하며 30중량%를 초과하게 되는 경우 초과 첨가량에 따른 효능의 증진이 나타나지 않는 바, 경제성이 낮아지는 문제점이 있다.In addition, dimethyl siloxane trimethylsiloxy terminated is a component that affects the uniform waterproofing performance of the ALC block, and affects uniform dispersion when each material is mixed. The component is preferably included in an amount of 20 to 30% by weight in the water repellent composition, and if it is added in an amount of less than 20% by weight, it does not exhibit the desired effect, and if it exceeds 30% by weight, the effect of the excess addition is enhanced. This bar does not appear, there is a problem that the economic efficiency is lowered.
본 발명자들은 본 발명에 따른 신규 발수제 조성물에 대한 발수 효능을 분석하기 위해 종래 발수제품과의 비교 분석을 수행하였는데, 분석 결과, 종래 발수제품은 20% 이상의 흡수율을 보이는 것으로 나타난 반면, 본원발명의 신규 발수제는 15% 미만의 흡수율을 보여 종래 제품에 비해 더 우수한 흡수율 저감 효과가 있음을 알 수 있었다. The present inventors performed a comparative analysis with conventional water repellent products to analyze the water repellent efficacy of the novel water repellent composition according to the present invention. As a result of the analysis, the conventional water repellent product showed an absorption rate of 20% or more, whereas the novel water repellent of the present invention It was found that the water repellent showed an absorption rate of less than 15%, and thus had a better absorption rate reduction effect than the conventional product.
따라서 본 발명의 발수제 조성물 또는 상기 조성물을 이용하여 제조된 경량기포 콘크리트 조성물은 15%이하의 낮은 흡수율, 바람직하게는 10%이하의 낮은 흡수율을 갖는 특징이 있다.Therefore, the water repellent composition of the present invention or the lightweight foamed concrete composition prepared using the composition has a low water absorption rate of 15% or less, preferably 10% or less.
또한, 본 발명은 상기 본 발명의 신규 발수제 조성물을 포함하는 저흡수성 경량 기포 콘크리트 조성물을 제공할 수 있는데, 바람직하게, 상기 규사는 50~60 중량부, 생석회는 10~16 중량부, 시멘트는 22~30 중량부, 석고는 2~5 중량부, 알루미늄 분말은 0.05~1.00 중량부, 물은 전체원료량의 65~75 중량부 및 본 발명의 신규 발수제 조성물 0.1~0.3 중량부를 포함하는, 저흡수성 경량 기포 콘크리트 조성물을 제공한다.In addition, the present invention can provide a low-absorption lightweight aerated concrete composition comprising the novel water repellent composition of the present invention, preferably, the silica sand 50 to 60 parts by weight, quicklime 10 to 16 parts by weight, cement 22 -30 parts by weight, 2 to 5 parts by weight of gypsum, 0.05 to 1.00 parts by weight of aluminum powder, 65 to 75 parts by weight of water, and 0.1 to 0.3 parts by weight of the new water repellent composition of the present invention It provides a lightweight aerated concrete composition.
특히 본 발명에서는 우수한 저흡수성을 가지며 압축강도가 높은 고기능성 경량 기포 콘크리트 블록의 제조방법을 확립하였는데, 상기 방법은 (a) 규사, 생석회, 시멘트, 석고 및 물을 함께 혼합하여 교반하는 단계; (b) 상기 (a) 단계의 혼합물에 알루미늄 분말 및 본 발명의 신규 발수제 조성물을 첨가하여 혼합하는 단계; (c) 타설 및 발포하는 단계; 및 (d) 양생하는 단계를 포함한다. In particular, the present invention has established a method of manufacturing a high-functional lightweight foamed concrete block having excellent low water absorption and high compressive strength, the method comprising the steps of: (a) mixing and stirring silica sand, quicklime, cement, gypsum and water together; (b) adding and mixing aluminum powder and the novel water repellent composition of the present invention to the mixture of step (a); (c) pouring and foaming; And (d) curing.
구체적으로, 본 발명의 저흡수성 경량 기포 콘크리트 블록의 제조는, 먼저 규사, 생석회, 시멘트, 석고 및 물을 함께 혼합하여 교반하는데, 이때 규사는 50~60 중량부, 생석회는 10~16 중량부, 시멘트는 22~30 중량부, 석고는 2~5 중량부, 알루미늄 분말은 0.05~1.00 중량부, 물은 전체원료량의 65~75 중량부 중량부로 첨가하여 혼합한다. Specifically, in the manufacture of the low-absorption lightweight foamed concrete block of the present invention, first, silica sand, quicklime, cement, gypsum, and water are mixed together and stirred, wherein the silica sand is 50 to 60 parts by weight, the quicklime is 10 to 16 parts by weight, Cement is 22 to 30 parts by weight, gypsum is 2 to 5 parts by weight, aluminum powder is 0.05 to 1.00 parts by weight, and water is added in 65 to 75 parts by weight of the total raw material and mixed.
이후 혼합된 혼합물에 알루미늄 분말 및 본 발명의 신규 발수제 조성물을 첨가하여 혼합하는데, 알루미늄 분말은 0.05~1.00 중량부로 첨가하고 신규 발수제 조성물은 0.1~0.3 중량부로 첨가할 수 있다.Thereafter, aluminum powder and the new water repellent composition of the present invention are added to the mixed mixture and mixed. The aluminum powder may be added in an amount of 0.05 to 1.00 parts by weight, and the new water repellent composition may be added in an amount of 0.1 to 0.3 parts by weight.
그 다음으로는 타설 및 발포하는 단계를 수행한다. 보통 경량 기포 콘크리트는 다공질 재료로서 공극이 전체 부피의 70%를 차지하는 건축 재료이다. 공극을 통해서 단열성이 나타나며 균질하게 잘 분포된 공극은 응력 분산을 균일하게 하여 압축 강도를 향상시킨다. 또한 발포는 콘크리트의 비중에 큰 영향을 미치는 인자이며 발포의 영향으로 비중이 낮은 콘크리트가 만들어질 수 있다. 본 발명에서는 발포를 시키기 위해 알루미늄 분말을 교반의 마지막 과정에 섞어 타설 과정을 수행하였다. Next, pouring and foaming are performed. Usually, lightweight aerated concrete is a porous material and is a building material with voids accounting for 70% of the total volume. Thermal insulation is exhibited through the pores, and the pores that are homogeneously well-distributed uniformly distribute the stress to improve compressive strength. In addition, foaming is a factor that has a great influence on the specific gravity of concrete, and the effect of foaming can make concrete with a low specific gravity. In the present invention, in order to foam, aluminum powder was mixed in the final process of stirring to perform a pouring process.
발포 및 타설 과정이 완료되면 이후 양생과정을 수행하게 되며, 본 발명에서는 상기 양생과정을 2단계에 걸쳐 수행하였다.When the foaming and pouring process is completed, the curing process is performed thereafter, and in the present invention, the curing process is performed in two steps.
본 발명의 양생과정은 45℃~50℃의 온도에서 3~5시간 동안 1차 양생을 수행하고, 이후 170℃~190℃의 온도에서 9~11기압 조건으로 5~10시간 동안 2차 양생을 수행한다.In the curing process of the present invention, the first curing is performed at a temperature of 45° C. to 50° C. for 3 to 5 hours, and thereafter, the secondary curing is performed at a temperature of 170° C. to 190° C. under 9 to 11 atmospheres for 5 to 10 hours. Perform.
이상의 방법으로 제조된 본 발명의 저흡수성 경량 기포 콘크리트 블록은 표면의 급결 방지 및 형상의 안정성이 우수하여 표면 안정성을 확보하였고, 저흡수성이 우수하여 누수 방지 효과가 높은 특징이 있다.The low-absorption lightweight foamed concrete block of the present invention manufactured by the above method has excellent surface stability due to excellent prevention of rapid setting and shape stability of the surface, and excellent low-absorption property to prevent leakage.
또한 본 발명자들은 본 발명의 방법으로 제조된 저흡수성 경량 기포 콘크리트의 품질을 평가하기 위해 압축강도와 비중을 분석하였는데, 본 발명에서 제조된 저흡수성 경량 기포 콘크리트 블록은 우수한 압축강도를 나타내었다.In addition, the present inventors analyzed the compressive strength and specific gravity in order to evaluate the quality of the low-absorption lightweight foamed concrete produced by the method of the present invention, and the low-absorbing lightweight foamed concrete block produced in the present invention exhibited excellent compressive strength.
따라서 본 발명의 방법은 고강도의 압축강도를 가지면서 동시에 우수한 흡수율 저감 효과를 갖는 경량 기포 콘크리트 블록의 제조가 가능하여 공기 단축 및 시공성 향상 효과를 도출할 수 있다. Therefore, the method of the present invention can produce a lightweight foamed concrete block having a high strength compressive strength and at the same time having an excellent water absorption reduction effect, thereby shortening the construction period and improving workability.
이하, 실시예를 통하여 본 발명을 보다 상세히 설명하고자 한다. 이들 실시예는 본 발명을 보다 구체적으로 설명하기 위한 것으로, 본 발명의 범위가 이들 실시예에 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail through examples. These examples are for explaining the present invention more specifically, and the scope of the present invention is not limited to these examples.
<실시예 1><Example 1>
신규 발수제 조성물의 제조Preparation of new water repellent composition
본 발명자들은 저흡수성 경량 기포 콘크리트 제조를 위한 신규 발수제를 하기 표 1에 기재된 성분들을 혼합하고 이를 충분히 교반하여 발수제 조성물을 제조하였다. The present inventors prepared a water-repellent composition by mixing the components shown in Table 1 below with a novel water-repellent agent for producing a low-absorbent lightweight foamed concrete, and sufficiently stirring it.
<< 실시예Example 2> 2>
본 발명의 신규 발수제 조성물을 이용한 저흡수성 Low water absorption using the novel water repellent composition of the present invention 경량기포Lightweight foam 콘크리트 블록의 제조 Manufacture of concrete blocks
본 발명에 따른 저흡수성 경량 기포 콘크리트 블록은, (1) 생석회, 규사, 시멘트 및 석고를 혼합하여 교반하는 단계, (2) 타설 및 발포하는 단계, (3) 1차 양생 단계 및 (4) 2차 양생단계를 통해 제조하였다.The low-absorption lightweight foamed concrete block according to the present invention includes (1) mixing and stirring quicklime, silica sand, cement and gypsum, (2) pouring and foaming, (3) first curing and (4) 2 It was prepared through the tea curing step.
보다 구체적인 제조 방법은 하기에 기술된 방법을 통해 제조하였다. A more specific manufacturing method was prepared through the method described below.
먼저, 물 70g, 생석회 12g, 규사 55g, 시멘트 25g 및 석고 3g를 첨가하고 교반하였다. 교반은 발열에 영향이 적은 순서대로 투입이 하였는데, 순서로는 물, 규사, 시멘트, 생석회, 석고 순으로 투입하여 교반하였고, 생석회 투입 후 3분 30초간 교반하여 초기 양생이 필요한 열량을 끌어 올려 이후 제조과정의 기반을 다지도록 하였다. First, 70 g of water, 12 g of quicklime, 55 g of silica sand, 25 g of cement and 3 g of gypsum were added and stirred. Stirring was introduced in the order of less effect on heat generation, and water, silica sand, cement, quicklime, and gypsum were added in the order and stirred.After adding the quicklime, stirring for 3 minutes and 30 seconds to raise the amount of heat required for initial curing. It laid the foundation for the manufacturing process.
상기 교반 과정이 완료되면, 타설 및 발포 과정을 수행하였는데 발포를 위해 상기 교반 단계에서 교반 완료되는 시점을 기준으로 30초 전 알루미늄 분말을 0.06g 첨가하였고, 발수제는 0.2g 첨가하여 타설하였다. When the stirring process was completed, the pouring and foaming process was performed. For foaming, 0.06g of aluminum powder was added 30 seconds before the completion of stirring in the stirring step, and 0.2g of a water repellent was added to pour.
발포가 완료되면 이후 양생 과정을 수행하였는데, 양생 과정은 2단계를 통해 수행하였다. 1차 양생은 48℃ 온도의 양생실에서 3시간 동안 1차 양생을 수행하였고, 1차 양생을 마친 후 180℃ 10기압의 상태에서 6시간 동안 오토클레이브 양생을 수행하여, 본 발명에 따른 저흡수성 경량 기포 콘크리트 블록을 제조하였다.When the foaming was completed, the curing process was then performed, and the curing process was performed through two steps. The first curing was performed in a curing room at a temperature of 48° C. for 3 hours, and after finishing the first curing, autoclave curing was performed at 180° C. for 6 hours at a pressure of 10 atmospheres, and low water absorption according to the present invention A lightweight aerated concrete block was prepared.
<< 비교예Comparative example 1> 1>
상기 실시예 2에서 본 발명의 실시예 1에서 제조한 신규 발수제 대신 종래 사용되고 있는 발수제를 사용한 것을 제외하고는 동일한 방법으로 경량 기포 콘크리트 블록을 제조하였다.In Example 2, a lightweight foamed concrete block was manufactured in the same manner, except that a water repellent conventionally used instead of the new water repellent prepared in Example 1 of the present invention was used.
<< 실험예Experimental example 1> 1>
본 발명의 신규 발수제 조성물의 흡수율 Water absorption rate of the novel water repellent composition of the present invention 저감효과Reduction effect 분석 analysis
상기 실시예 1에 따른 본 발명의 신규 발수제에 대한 흡수율 정도를 분석하였다.The degree of water absorption for the novel water repellent of the present invention according to Example 1 was analyzed.
그 결과, 도 1에 나타낸 바와 같이, 본 발명에서 제조한 신규 발수제가 흡수율 저감율이 매우 우수한 것으로 나타났으며, 함수율에 따른 흡수율 측정 결과에서도 본 발명의 발수제는 함수율별 흡수율 영향이 적음을 알 수 있었다(도 2 참조). 특히 종래 일반 ALC 블록은 20% 이상의 흡수율을 보이는 것으로 나타난 반면, 본원발명의 신규 발수제는 15% 미만의 흡수율을 보여 종래 제품에 비해 더 우수한 흡수율 저감 효과가 있음을 알 수 있었다.As a result, as shown in FIG. 1, the new water repellent prepared in the present invention was found to have a very good absorption rate reduction rate, and the water repellent of the present invention was found to have little effect on the absorption rate by moisture content from the absorption rate measurement result according to the moisture content. (See Fig. 2). In particular, it was found that the conventional general ALC block showed an absorption rate of 20% or more, whereas the novel water repellent of the present invention showed an absorption rate of less than 15%, and thus it was found that there is a better absorption rate reduction effect than the conventional product.
<< 실험예Experimental example 2> 2>
본 발명의 신규 발수제를 이용하여 제조된 경량 기포 콘크리트 블록의 흡수율 분석Analysis of water absorption rate of lightweight foamed concrete blocks manufactured using the novel water repellent of the present invention
상기 실시예 2에서 제조된 본 발명의 저흡수성 경량 기포 콘크리트 블록과 비교예 1의 경량 기포 콘크리트 블록에 대한 흡수율 정도를 분석하였다. 흡수율 분석은 ALC 블록의 흡수율 시험 방법인 KS F 4004(콘크리트벽돌)의 흡수율 시험 방법에 따라 수행하였는데, 구체적으로 시험체인 경량 기포 콘크리트 블록 벽돌 전체의 모양 그대로를 사용하여 25℃의 맑은 물 속에 24시간 침지시킨 후, 즉시 물속에서 꺼내어 철망 위에 놓고 1분간 물기를 뺀 후, 젖은 헝겊으로 표면을 닦아 내고 시험체의 표건질량(m0)을 측정하였다. 이후 110℃의 공기 건조기 안에서 24시간 건조시켜서 시험체의 절건 질량(m1)을 측정한 후, 하기 계산식으로 흡수율을 계산하였다. 분석은 본 발명의 발수 ALC 블록 및 비교예에서 제조한 대조군 일반ALC 블록 각 2개에 대해 측정하였다.The degree of water absorption was analyzed for the low-absorption lightweight foamed concrete block of the present invention prepared in Example 2 and the lightweight foamed concrete block of Comparative Example 1. The absorption rate analysis was performed according to the absorption rate test method of KS F 4004 (concrete brick), which is a water absorption rate test method for ALC blocks. Specifically, using the shape of the entire lightweight aerated concrete block brick as a test, it is used in clear water at 25℃ for 24 hours. After immersion, it was immediately removed from the water, placed on a wire mesh, drained for 1 minute, and then the surface was wiped with a wet cloth, and the surface dry mass (m0) of the test specimen was measured. Thereafter, it was dried in an air dryer at 110° C. for 24 hours to measure the absolute dry mass (m1) of the test body, and then the absorption rate was calculated by the following calculation formula. Analysis was measured for each of the water-repellent ALC block of the present invention and the control general ALC block prepared in Comparative Example.
흡수율 (%/vol.) = (표건질량(m0)-절건질량(m1))/시료부피(㎥)Ⅹ100Absorption rate (%/vol.) = (normal dry mass (m0)-absolute dry mass (m1))/sample volume (㎥) Ⅹ100
분석 결과, 상기 표 2에 나타낸 바와 같이, 본 발명의 방법으로 제조된 발수ALC 블록이 비교예 1의 일반 ALC 블록에 비해 흡수율이 현저하게 저감되어 있는 것으로 나타났다. As a result of the analysis, as shown in Table 2, it was found that the water-repellent ALC block prepared by the method of the present invention had a remarkably reduced absorption rate compared to the general ALC block of Comparative Example 1.
<실험예 3><Experimental Example 3>
본 발명의 신규 발수제를 이용하여 제조된 경량 기포 콘크리트 블록의 담수 테스트Freshwater test of lightweight aerated concrete blocks manufactured using the novel water repellent of the present invention
상기 실시예 2에서 본 발명의 신규 발수제를 이용하여 제조된 경량 기포 콘크리트 블록에 대한 담수 테스트, 즉 누수 여부를 확인하였는데, 이를 위해 경량 기포 콘크리트 블록 100T 2장을 가로로 1면이 되도록 총 4면을 구성하여 1단을 조적하였고, 바닥에 비닐시트를 깐 후 바닥과 ALC 블록면은 ALC 조적용 폼건으로 접착하고 내외부를 실리콘으로 실링하였다. 이후 ALC 블록 사이는 ALC 조적용 몰탈로 접착하였고, ALC 블록 면에 미장용 몰탈을 5mm로 미장하였다. 이때 2면은 일반 미장하였고, 2면은 각각 본 발명의 발수제 및 대조군 발수제를 첨가하여 발수 미장하였다. 양생이 끝난 후 10cm 높이로 물을 채우고 시간 경과에 따라 블록과 미장면 몰탈 접착 부위의 누수를 확인하였다. 상기 실험 방법의 과정은 도 3에 나타내었다.In Example 2, a freshwater test for the lightweight foamed concrete block manufactured using the novel water repellent of the present invention, that is, whether there is any leakage, was confirmed. For this purpose, a total of 4 surfaces were made so that two sheets of lightweight foamed concrete block 100T become one horizontally. The first stage was masonry, and after a vinyl sheet was laid on the floor, the floor and the ALC block surface were adhered with a foam gun for ALC masonry, and the inside and outside were sealed with silicone. Thereafter, the ALC blocks were bonded with an ALC masonry mortar, and a plastering mortar was plastered with 5 mm on the surface of the ALC block. At this time, the two sides were plastered with general, and the two sides were water-repellent by adding the water repellent of the present invention and the control water repellent, respectively. After curing was completed, water was filled to a height of 10 cm, and over time, leakage was observed at the bonding site of the mortar on the plaster surface. The process of the experimental method is shown in FIG. 3.
분석 결과, 본 발명의 발수제 처리 미장군은 물이 미장면까지는 침투하나 블록 내부로 침투하지 않는 것으로 나타났고, 몰탈 줄눈 부분 역시 물이 소량 침투하였을 뿐 대체적으로 양호한 것으로 나타났다. 바닥면의 경우도 물이 거의 침투하지 않는 것으로 나타나, 본 발명의 발수제를 사용하여 각 성분별 특정 함량으로 조합하여 제조된 본 발명의 경량 기포 콘크리트 블록은 흡수율 저감 효과가 매우 우수하여 누수가 발생하지 않음을 알 수 있었다(도 4). As a result of the analysis, the water repellent treatment of the present invention showed that water penetrated to the plaster surface but did not penetrate into the block, and the mortar joint was also found to be generally good only with a small amount of water. It appears that water hardly penetrates even in the case of the bottom surface, and the lightweight foamed concrete block of the present invention, prepared by combining the water repellent of the present invention with a specific content for each component, has a very excellent effect of reducing water absorption and does not cause leakage. It was found that it was not (Fig. 4).
<실험예 4><Experimental Example 4>
본 발명의 경량 기포 콘크리트 블록의 압축강도 및 흡수율 측정Measurement of compressive strength and water absorption of the lightweight aerated concrete block of the present invention
<4-1> 압축강도 측정<4-1> Compression strength measurement
본 발명자들은 상기 실험예 3에 기재된 본 발명의 경량 기포 콘크리트 블록에 대한 압축강도를 종래 압축강도를 측정 방법에 따라 측정하였다.The present inventors measured the compressive strength of the lightweight aerated concrete block of the present invention described in Experimental Example 3 according to a conventional method for measuring compressive strength.
이때 대조군으로는 종래 발수제인 다우코닝 발수제 및 신에츠 발수제를 각각 사용하여 제조한 콘크리트 블록을 사용하였다.At this time, as a control, a concrete block prepared using a conventional water repellent, Dow Corning water repellent and Shin-Etsu water repellent, respectively, was used.
분석 결과, 상기 표 3에 나타낸 바와 같이, 본 발명에 따른 발수제를 사용한 군이 다른 대조군에 비해 가장 우수한 압축 강도를 보이는 것으로 나타났다.As a result of the analysis, as shown in Table 3, it was found that the group using the water repellent according to the present invention showed the best compressive strength compared to other controls.
<4-2> 흡수율 측정<4-2> absorption rate measurement
또한 본 발명자들은 본 발명의 경량 기포 콘크리트 블록에 대한 흡수율 측정을 수행하였고 그 결과를 하기 표 4에 나타내었다.In addition, the present inventors measured the water absorption for the lightweight foamed concrete block of the present invention, and the results are shown in Table 4 below.
분석 결과, 상기 표 4에 나타낸 바와 같이, 본 발명에 따른 발수제를 사용한 군이 대조군에 비해 가장 낮은 흡수율을 보이는 것으로 나타났다.As a result of the analysis, as shown in Table 4, it was found that the group using the water repellent according to the present invention showed the lowest absorption rate compared to the control group.
따라서 이러한 결과들을 통해, 본 발명자들은 본 발명의 신규 발수제를 사용하여 경량 기포 콘크리트 블록을 제조할 경우, 고강도의 압축강도를 가지면서 동시에 우수한 흡수율 저감 효과를 갖는 경량 기포 콘크리트 블록의 제조가 가능하여 공기 단축 및 시공성 향상 효과를 도출할 수 있음을 알 수 있었다.Therefore, through these results, the inventors of the present invention when manufacturing a lightweight foamed concrete block using the new water repellent of the present invention, it is possible to manufacture a lightweight foamed concrete block having high compressive strength and excellent water absorption rate reduction effect. It was found that the effect of shortening and improving workability can be derived.
이제까지 본 발명에 대하여 그 바람직한 실시예들을 중심으로 살펴보았다. 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자는 본 발명이 본 발명의 본질적인 특성에서 벗어나지 않는 범위에서 변형된 형태로 구현될 수 있음을 이해할 수 있을 것이다. 그러므로 개시된 실시예들은 한정적인 관점이 아니라 설명적인 관점에서 고려되어야 한다. 본 발명의 범위는 전술한 설명이 아니라 특허청구범위에 나타나 있으며, 그와 동등한 범위 내에 있는 모든 차이점은 본 발명에 포함된 것으로 해석되어야 할 것이다.So far, the present invention has been looked at around its preferred embodiments. Those of ordinary skill in the art to which the present invention pertains will be able to understand that the present invention can be implemented in a modified form without departing from the essential characteristics of the present invention. Therefore, the disclosed embodiments should be considered from an illustrative point of view rather than a limiting point of view. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope equivalent thereto should be construed as being included in the present invention.
Claims (8)
발수제조성물 100중량 %에 대해, 상기 디메틸메틸옥틸실록산(Dimethyl,methyloctyl siloxane)은 50중량%, 상기 디메틸실록산하이드록시터미네이티드(Dimethyl siloxane,hydroxy-terminated)는 25중량% 및 상기 디메틸실록산트리메틸실록시터미네이티드(Dimethyl siloxane,trimethylsiloxy-terminated)는 25중량%로 함유되어 있는 것을 특징으로 하는, 발수제 조성물.It contains all of dimethylmethyloctylsiloxane, dimethylsiloxane, hydroxy-terminated, and dimethylsiloxane trimethylsiloxy-terminated as active ingredients,
With respect to 100% by weight of the water-repellent composition, the dimethylmethyloctylsiloxane (Dimethyl, methyloctyl siloxane) is 50% by weight, the dimethylsiloxane hydroxy-terminated is 25% by weight, and the dimethylsiloxane trimethylsiloxane Siterminated (Dimethyl siloxane, trimethylsiloxy-terminated) is characterized in that contained in 25% by weight, water repellent composition.
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