KR20020095895A - a concrete or a mortar having synthetic rubber latex and Waterproof paving method using the concrete and the mortar - Google Patents

a concrete or a mortar having synthetic rubber latex and Waterproof paving method using the concrete and the mortar Download PDF

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KR20020095895A
KR20020095895A KR1020010034229A KR20010034229A KR20020095895A KR 20020095895 A KR20020095895 A KR 20020095895A KR 1020010034229 A KR1020010034229 A KR 1020010034229A KR 20010034229 A KR20010034229 A KR 20010034229A KR 20020095895 A KR20020095895 A KR 20020095895A
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South Korea
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concrete
mortar
synthetic rubber
rubber latex
latex
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KR1020010034229A
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Korean (ko)
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KR100421255B1 (en
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안영기
양영규
김영상
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쌍용엔지니어링 주식회사
주식회사 에이씨이테크
금호석유화학 주식회사
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/24—Macromolecular compounds
    • C04B24/34—Natural resins, e.g. rosin
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Structural Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

PURPOSE: Provided is a water proof mortar or concrete, applied to roads, bridges and walls, which improves durability of construction, bonding strength between water proof materials and concrete construction, and saves maintenance costs by mixing synthetic rubber, latex, with concrete. CONSTITUTION: The concrete composition comprises 5-6wt.% of SBR latex, 16-20wt.% of cement, 43-47wt.% of sand, 23-26wt.% of gravel and 6-8wt.% of water. The mortar composition comprises 1-4wt.% of SBR latex, 20-23wt.% of cement, 67-69wt.% of sand and 6-7wt.% of water. The SBR latex contains 58.3wt.% of styrene, 6wt.% of butadiene, and a small amount of non-ionic surfactant, anion surfactant and potassium persulfate. The paving method of concrete or mortar is as follows: preparing latex-contained concrete or mortar; applying the prepared concrete or mortar to roads, bridges and walls; casting in place; finishing and curing.

Description

합성고무 라텍스를 함유하는 콘크리트 또는 몰탈 및 그들을 이용한 방수포장방법 { a concrete or a mortar having synthetic rubber latex and Waterproof paving method using the concrete and the mortar }Concrete or a mortar having synthetic rubber latex and Waterproof paving method using the concrete and the mortar}

본 발명은 합성고무 라텍스를 포함하는 콘크리트 또는 몰탈 및 그들을 이용한 방수포장방법에 관한 것으로, 더 자세하게는 고분자 화합물인 합성고무 라텍스를 실험에서 얻어진 최적배합비로 콘크리트에 배합하여 합성고무 라텍스가 콘크리트 내부에서 필름 또는 네트워크를 형성하도록 하여 수밀성, 휨강도, 부착강도 등을 증대시킴으로써 교량이나 도로, 건축물을 효율적으로 방수포장할 수 있도록 한 것에 관한 것이다.The present invention relates to concrete or mortar containing synthetic rubber latex and a waterproof packaging method using them. More specifically, the synthetic rubber latex is synthesized by mixing the synthetic rubber latex, which is a high molecular compound, into the concrete at the optimum mixing ratio obtained in the experiment. Or to form a network to increase the watertightness, bending strength, adhesion strength, etc. to efficiently waterproof the bridges, roads, buildings.

일반적으로 도로건설이 시작된 이래로 도로포장의 경우에는 주로 아스팔트 포장(아스팔트 콘크리트 포장)이 그 주류를 이루었던 바, 산업 및 경제규모가 확대됨에 따라 수송수단인 차량의 대형화 및 중량화로 인해서 포장수명이 단축되는 결과를 초래되었으며, 이와 더불어 거듭된 유류파동에 따른 포장 공사비의 상대적 상승과 부존자원의 활용차원에서 콘크리트 포장(시멘트 콘크리트 포장)에 대한 관심을 갖게 되었고, 그에 따른 시공실적도 점차 확대되고 있는 실정이다.In general, asphalt pavement (asphalt concrete pavement) has been the mainstay of road pavement since the beginning of road construction. As the industrial and economic scales expand, the pavement life is shortened due to the increase in size and weight of vehicles. In addition, the interest in concrete pavement (cement concrete pavement) has increased due to the relative increase in the cost of pavement due to repeated oil fluctuations and utilization of existing resources. .

상기에서 콘크리트 포장은 아스팔트 포장에 비해서 내구성, 내마모성 등이 월등히 우수하지만 요구되는 평탄성 확보가 어렵고 교통소음 및 빛에 대한 반사가 심해서 운전에 방해를 주며, 투수성으로 인해서 염화물이 내부로 침투하여 철근의 부식을 유발하고, 그에 따른 콘크리트 표면의 균열이 발생하여 내구성을 저하시킨다.The concrete pavement is superior in durability and abrasion resistance compared to asphalt pavement, but it is difficult to secure the required flatness and interferes with driving due to severe reflection of traffic noise and light. Causing corrosion, resulting in cracking of the concrete surface resulting in poor durability.

이에 비교하여 아스팔트 포장의 경우는 온도나 하중에 대하여 소성변형이 심하여 균열이나 노면변형 등이 유발되고, 이질적인 콘크리트와 아스팔트 포장재료의 사용과 투수나 온도변화 등의 외부적 요인에 의해서 들뜸, 박리, 균열 등이 발생하여 잦은 보수공사가 요구되며, 이러한 아스팔트 포장의 빈번한 보수공사로 인해서 차량통행 제한 등의 사회적 비용 증가와 투입되는 공사비로 인한 경제적 손실 등이 문제시되고 있다.In comparison, asphalt pavement causes severe plastic deformation with respect to temperature and load, causing cracking and road surface deformation, and due to the use of heterogeneous concrete and asphalt pavement materials, and external factors such as permeability and temperature change. Frequent repair work is required due to cracks, and the frequent repair work on such asphalt pavement is causing problems such as increased social costs such as restricting vehicle traffic and economic losses due to the construction cost.

한편 시멘트 몰탈 방수공법은 풍부한 시공실적과 경험으로 인해서 자주 사용되지만 공정의 복잡성과 인건비, 배합에 따른 계량의 어려움 등으로 인해서 품질관리가 거의 불가능하다.On the other hand, cement mortar waterproofing is frequently used due to its rich construction performance and experience, but quality control is almost impossible due to the complexity of the process, labor cost, and difficulty in weighing due to formulation.

따라서 최근에 들어서 일반 건축 구조물에서 방수는 주로 합성수지계열의 에폭시를 주로 사용하고 있는 실정인 바, 에폭시는 강한 결합성이 발휘되고, 내화학성, 내마모성, 내수성 등이 뛰어나지만 경제적이지 않고, 강도에 비해 신장성이 떨어지며, 자연광에 오래 노출될 경우에는 탈색 등의 단점을 가지고 있다.Therefore, in recent years, in general building structures, the waterproofing is mainly using synthetic resin-based epoxy. Epoxy exhibits strong bonding properties, and has excellent chemical resistance, abrasion resistance, and water resistance, but is not economical, and compared with strength. Elongation is poor, and when exposed to natural light for a long time has a disadvantage such as discoloration.

또한 실리칸트 등의 무기질 침투제를 이용한 방수공법은 대부분 프리캐스트(Precast) 형식으로 품질은 보장되나 시공의 어려움과 재료비가 고가라는 단점이 있다.In addition, the waterproofing method using inorganic penetrants such as silicate is mostly precast type, but the quality is guaranteed, but there are disadvantages of difficulty in construction and expensive materials.

상술한 바와 같이 교량 및 도로 그리고 건물의 방수 포장에서 기존 콘크리트와 접합력이 우수하고, 수밀한 방수 포장의 필요성이 부각되고 있다.As described above, in the waterproof pavement of bridges, roads, and buildings, the need for excellent waterproofing and watertight pavement is increasing.

발명은 전술한 종래의 콘크리트 방수방법 등의 문제점을 해결하기 위해 안출한 것이며, 그 목적이 시멘트 콘크리트 포장시에 수밀성과 내구성 등을 향상시킬 수 있도록 하는 합성고무 라텍스를 함유하는 콘크리트 또는 몰탈을 제공하는 데에 있는 것이며, 그 다른 목적이 상기 합성고무 라텍스를 함유하는 콘크리트 또는 몰탈을 이용하여 도로면이나 건축물의 내외벽을 방수포장할 수 있도록 하는 합성고무 라텍스를 함유하는 콘크리트 또는 몰탈을 이용한 방수포장방법을 제공하는 데에 있는 것이다.The present invention has been made to solve the above problems of the conventional concrete waterproofing method, the object is to provide concrete or mortar containing synthetic rubber latex to improve the watertightness and durability, etc. when paving cement concrete The other purpose is a waterproof packaging method using concrete or mortar containing synthetic rubber latex to waterproof the interior and exterior walls of roads or buildings using concrete or mortar containing the synthetic rubber latex. It is in providing.

도 1은 본 발명에 의한 방수포장에 대한 공정도1 is a process chart for waterproof packaging according to the present invention

도 2는 본 발명에 의한 개질 콘크리트의 라텍스 혼입량에 따른 압축강도를 나타낸 그래프2 is a graph showing the compressive strength according to the amount of latex mixing of the modified concrete according to the present invention

도 3은 동 개질 콘크리트의 라텍스 혼입량에 따른 휨강도를 나타낸 그래프3 is a graph showing the flexural strength according to the amount of latex incorporation of copper modified concrete

도 4는 동 개질 콘크리트의 라텍스 혼입량에 따른 인장강도를 나타낸 그래프4 is a graph showing the tensile strength according to the amount of latex incorporation of copper modified concrete

본 발명은 상기의 목적을 달성하기 위하여 스틸렌과 부타디엔을 주성분으로 하는 합성고무 라텍스(KSL363)를 일정비율로 혼합하여 콘크리트 또는 몰탈을 제조하고, 이 콘크리트 또는 몰탈을 사용하여 교량 및 도로, 건축물에 대한 방수포장을 하는 것을 특징으로 하며, 이하 그 구체적인 기술내용을 더욱 자세히 설명하면 다음과 같다.The present invention is to produce a concrete or mortar by mixing a certain ratio of synthetic rubber latex (KSL363) consisting of styrene and butadiene in order to achieve the above object, using the concrete or mortar for bridges, roads, buildings It is characterized in that the waterproof packaging, the following detailed description of the technical details.

즉, 본 발명에 있어서 교면방수포장 및 도로방수포장에 사용되는 개질 콘크리트 조성물은 전체 중량에 대하여 시멘트 16~20%, 합성고무 라텍스(SBR Latex) 5∼6%, 모래 43∼47%, 자갈 23∼26%, 물 6∼8%를 혼합한 것이며, 건축물의 내외벽 방수포장에 사용되는 개질 몰탈 조성물은 시멘트 22~23%, 합성고무 라텍스(SBR Latex) 1∼4%, 모래 67~69%, 물 6∼7%를 혼합한 것이다.That is, in the present invention, the modified concrete composition used for the crosslink waterproofing and road waterproofing is 16 to 20% of cement, 5 to 6% of synthetic rubber latex (SBR Latex), 43 to 47% of sand, 23 to gravel based on the total weight. It is a mixture of 26% to 6% water, and the modified mortar composition used for waterproofing the interior and exterior walls of buildings is 22% to 23% cement, 1% to 4% synthetic rubber latex (SBR Latex), and 67% to 69% sand. , 6-7% of water is mixed.

한편 도 1에는 본 발명의 개질 콘크리트 또는 개질 몰탈을 이용하는 방수포장방법의 공정도가 도시되어 있는 바, 본 발명의 방수포장방법은 표면정리 및 청소를 하는 단계 및 개질 콘크리트 또는 개질 몰탈을 생산하는 단계, 그리고 개질 콘크리트 또는 개질 몰탈을 1차 도포하는 단계, 개질 콘크리트 또는 개질 몰탈을 포설하는 단계, 마감하는 단계, 양생하는 단계로 이루어진다.On the other hand Figure 1 is a process diagram of the waterproof packaging method using the modified concrete or modified mortar of the present invention bar, the waterproof packaging method of the present invention is the step of surface cleaning and cleaning and producing the modified concrete or modified mortar, And it consists of the first step of applying the modified concrete or modified mortar, the step of laying the modified concrete or modified mortar, finishing, curing.

표면정리 및 청소하는 단계에 있어서는 교면방수포장 및 도로방수포장의 경우 노후콘크리트 부분과 철근의 녹을 제거하고 표면을 수분상태로 유지하게 되며, 건축물의 내외벽 방수포장의 경우 표면 평탄화 작업과 이물질을 제거작업을 수행하고 표면을 수분상태로 유지하게 된다.In the stage of cleaning and cleaning the surface, in the case of bridge waterproofing and road waterproofing, it removes the rust of old concrete part and reinforcing bar, and keeps the surface in water state. The work is performed and the surface is kept in water.

개질 콘크리트 또는 개질 몰탈을 생산하는 단계에 있어서는 정해진 비율로 재료를 혼합한 후 1시간 이내에 포설 및 마감이 될 수 있도록 한다.In the production of modified concrete or modified mortar, the materials can be laid and finished within one hour after mixing the materials in a fixed proportion.

개질 콘크리트 또는 개질 몰탈을 1차 도포하는 단계에 있어서는 교면방수포장 및 도로방수포장의 경우 적정량의 개질 콘크리트를 대상표면에 포설하고 브루밍(Blooming)작업으로 표면의 미세공극을 채운 후 표면에 남은 골재를 제거하며, 건축물 내외벽 방수포장의 경우 시공전에 콘크리트 표면의 취약부를 채우고 표면에 남은 골재를 제거한다.In the first step of applying modified concrete or modified mortar, in the case of bridge waterproofing and road waterproofing, an appropriate amount of modified concrete is laid on the target surface, and the aggregate remaining on the surface after filling the micropores of the surface by blooming In the case of waterproof packaging inside and outside the building, fill the weak part of the concrete surface before construction and remove the remaining aggregate on the surface.

개질 콘크리트 또는 개질 몰탈을 포설하는 단계에 있어서는 교면방수포장 및 도로방수포장의 경우 피니셔(Finisher)나 인력으로 포설을 하고, 건축물 내외벽 방수포장의 경우 방수층을 골고루 바르는 한편 이어바르기 겹침폭을 소정의 두께가 되도록 한다.In the step of installing modified concrete or modified mortar, the bridge waterproofing and road waterproofing are laid by finisher or manpower, and in the case of waterproof packaging of inner and outer walls of the building, the waterproofing layer is applied evenly and the overlapping width of the ear spread is prescribed. Make it thick.

마감하는 단계에 있어서는 교면방수포장 및 도로방수포장의 경우 진동기 등을 사용하여 포설면을 다지며 레이킹(Raking)작업으로 포설면으로 거칠게 하고, 건축물 내외벽 방수포장의 경우 공정이 미장공사이면 브러싱(Brushing)작업을 하여 거칠게 마감한다.In the finishing stage, in the case of cross-waterproof pavement and road waterproof pavement, use a vibrator to dig up the pavement surface, and rough it to the pavement surface by raking.In the case of waterproofing pavement inside and outside the building, brushing ( Brushing) to finish roughly.

양생하는 단계에 있어서는 교면방수포장 및 도로방수포장의 경우 7℃이상의 온도로 유지시키면서 비닐이 마대 등으로 덮어서 72시간이상 습윤 양생하며, 건축물 내외벽 방수포장의 경우 직사광선 및 통풍을 피하고 4~5일간 큰 하중이나 진동이 가해지지 않게 하는 동시에 동결이 예상되면 시트 등으로 보온하고 급격한 건조를 막기 위해서 습윤 양생한다.In the curing stage, the cross-waterproof and road-waterproof pavement is kept at a temperature of 7 ℃ or more, and the vinyl is covered with a sack for 72 hours of wet curing.In the case of waterproof packaging inside and outside the building, avoid direct sunlight and ventilation for 4 ~ 5 days. At the same time to prevent excessive loads or vibrations, if the freezing is expected, the sheet is kept wet and cured to prevent rapid drying.

한편 본 발명에 있어서 합성고무 라텍스(SBR Latex)는 표 1과 같이 스틸렌 58.3%, 부타디엔 6%, 소량의 비이온 계면활성제, 음이온 계면활성제, 과황산칼륨으로 이루어진 것(KSL363)을 사용하는 바, 도 2에서 도 4까지에 도시한 바와 같이 전체중량에서 합성고무 라텍스의 중량이 차지하는 비율 5~6% 이상으로 하면 휨강도와 인장강도는 증가하게 되지만 압축강도가 저하되므로 전체중량에서 합성고무 라텍스의 중량이 차지하는 비율은 5~6%로 하는 것이 극히 바람직하게 된다.Meanwhile, in the present invention, synthetic rubber latex (SBR Latex) is made of 58.3% styrene, 6% butadiene, a small amount of nonionic surfactant, anionic surfactant, potassium persulfate (KSL363) as shown in Table 1, As shown in FIGS. 2 to 4, when the ratio of the weight of the synthetic rubber latex to the total weight is 5 to 6% or more, the flexural strength and the tensile strength increase, but the compressive strength is lowered, so the weight of the synthetic rubber latex at the total weight It is extremely preferable that this proportion is 5 to 6%.

본 발명의 합성고무 라텍스(KSL363) 조성표Synthetic rubber latex (KSL363) composition table of the present invention 성분(Material)Material 중량비(%)Weight ratio (%) 스틸렌(Styrene)Styrene 58.358.3 부타디엔(Butadiene)Butadiene 3535 비이온 계면활성제(Nonionic surfactant)Nonionic surfactant 66 음이온 계면활성제(Anionic surfactant)Anionic surfactant 0.20.2 폴리실록산(Polyorganosiloxane)Polyorganosiloxane 0.30.3 과황산칼륨(Potassium persulfate)Potassium persulfate 0.20.2

상기와 같이 구성된 본 발명의 합성고무 라텍스를 함유하는 콘크리트와, 보통 콘크리트, 그리고 기존 라텍스 개질 콘크리트의 배합비와 그 역학적 특성은 표 2 및 표 3과 같은 바, 보통 콘크리트에 비해서 기존 라텍스 개질 콘크리트와 본 발명 제품 모두 뛰어난 강도특성을 발휘하고, 압축강도에서는 초기에 기존 라텍스 개질 콘크리트의 성능이 우수하지만 장기 강도는 오히려 본 발명의 합성고무 라텍스를 함유하는 콘크리트가 우수한 것을 알 수 있다.The compounding ratio and the mechanical properties of the synthetic rubber latex-containing concrete, the normal concrete, and the conventional latex modified concrete of the present invention configured as described above are as shown in Table 2 and Table 3, compared with the conventional concrete and the latex modified concrete All of the inventive products exhibit excellent strength characteristics, and the compressive strength is superior to the performance of the existing latex modified concrete initially, but the long-term strength can be seen that the concrete containing the synthetic rubber latex of the present invention is excellent.

따라서 본 발명의 합성고무 라텍스를 함유하는 콘크리트는 보통 콘크리트에 비해서는 성능이 우수하고, 기존의 라텍스 개질 콘크리트에 비해 성능저하가 없음을 알 수 있었으며, 향후 휨이나 부착강도가 크게 요구되는 교면방수포장, 타일접착, 노후 구조물 보수 등에 효과적으로 적용할 수 있음을 확인할 수 있었다.Therefore, the concrete containing the synthetic rubber latex of the present invention was superior to the conventional concrete, it can be seen that there is no performance degradation compared to the conventional latex modified concrete, cross-section waterproof packaging that requires a large amount of bending or adhesive strength in the future It can be confirmed that it can be applied effectively to tile adhesion, repair of aged structures, etc.

제품별 배합비Formulation Ratio by Product 구분division 단위unit 보통 콘크리트Plain concrete 기존 라텍스개질 콘크리트Conventional Latex Modified Concrete 본 발명 제품Invention Product 단위시멘트량Unit cement amount kgkg 400400 400400 400400 물-시멘트비(W/C)Water-Cement Ratio (W / C) %% 5454 3737 3939 잔골재율(S/a)Fine aggregate rate (S / a) %% 6565 5555 6565 폴리머-시멘트비(P/C)Polymer-Cement Ratio (P / C) %% -- 1515 1515

제품별 역학적 특성(단위 Kg/cm2)Mechanical Characteristics by Product (Unit Kg / cm 2 ) 구 분division 보통 콘크리트Plain concrete 기존 라텍스 개질 콘크리트Original Latex Modified Concrete 본 발명의 콘크리트Concrete of the present invention 압축강도Compressive strength 3일3 days 152152 203203 131131 7일7 days 227227 237237 202202 14일14 days 300300 277277 283283 28일28 days 314314 300300 307307 90일90 days 398398 395395 402402 휨강도Flexural strength 7일7 days 5050 5555 6262 14일14 days -- 5858 -- 28일28 days 5656 6262 8686 인장강도The tensile strength 28일28 days 2525 4747 4848 부착강도Adhesion strength 28일28 days 16.716.7 -- 23.223.2

한편 본 발명의 합성고무 라텍스를 함유하는 콘크리트와 보통 콘크리트의 공기량, 슬럼프, 크랙발생유무 시험, 물흡수계수 시험, 촉진 중성화 시험, 동결융해 시험, 길이변화 시험을 수행한 결과는 표 4와 같다.On the other hand, the results of the air volume, slump, crack generation test, water absorption coefficient test, accelerated neutralization test, freeze-thawing test, length change test of the synthetic rubber latex-containing concrete of the present invention is shown in Table 4.

본 발명의 합성고무 라텍스를 함유하는 콘크리트와 보통 콘크리트의 비교Comparison of Concrete Containing Synthetic Rubber Latex of the Present Invention and Regular Concrete 구 분division 보통 콘크리트Plain concrete 본 발명 제품Invention Product 공기량 (vol.%)Air volume (vol.%) 3.63.6 6.56.5 슬럼프slump 초기(cm)Initial (cm) 2121 2222 1시간 후(cm)1 hour later (cm) 1414 1616 크랙발생유무Crack occurrence 무radish 무radish 물흡수계수 (kg/m2·h0.5)Water Absorption Coefficient (kg / m 2 · h 0.5 ) 0.530.53 0.120.12 촉진 중성화 시험(mm)Accelerated neutralization test (mm) 1313 2.02.0 동결융해 시험 후 강도변화 (%)Strength change after freeze thawing test (%) 27% 강도저하27% strength reduction 18% 강도저하18% strength reduction 길이변화율(재령 7일 기준, %)Length change rate (% of 7 days old) 0.0360.036 0.0370.037

실험결과 표 4와 같이 본 발명의 합성고무 라텍스를 함유하는 콘크리트는 보통 콘크리트에 비하여 방수성능, 중성화 저항성, 동결융해저항성능, 초기 건조수축에 의한 균열저항성이 우수한 것을 알 수 있었으며, 그에 따라 본 발명의 합성고무 라텍스를 함유하는 콘크리트는 보통 콘크리트에 비하여 방수가 요구되는 곳 및 동결융해 및 중성화 우려가 있는 곳의 효과적으로 적용할 수 있을 확인할 수 있었다.Experimental results As shown in Table 4, the concrete containing the synthetic rubber latex of the present invention was found to be superior to the normal concrete, waterproof performance, neutralization resistance, freeze-thawing resistance performance, crack resistance by the initial dry shrinkage, according to the present invention The concrete containing synthetic rubber latex was found to be effectively applied in places where water resistance is required compared to ordinary concrete and where there is a fear of freezing thawing and neutralization.

한편 본 발명의 합성고무 라텍스를 이용한 개질 몰탈을 사용한 건물 내외벽의 방수포장의 경우는 실험을 통하여 물시멘트비는 30∼40%, 라텍스 고형분의 시멘트 중량에 대한 비율은 3∼10%를 사용하는 바, 외벽방수시에는 메틸 셀룰로즈의 경우는 0.6∼1.5%, 카르복실 메틸 셀룰로즈의 경우는 1.5% 이내, 알칼리 팽윤성 이멀젼의 경우는 1% 이내 범위에서 증점제를 첨가하여 사용할 수 있으며, 실험을 통하여 구해진 라텍스 개질 몰탈의 역학적 특성은 표 5와 같다.On the other hand, in the case of the waterproof packaging of the interior and exterior walls of the building using the modified rubber latex using the synthetic rubber latex of the present invention, the water cement ratio is 30 to 40% and the ratio of the latex solids to the cement weight is 3 to 10%. In case of waterproofing the external wall, thickener can be used within 0.6 ~ 1.5% for methyl cellulose, 1.5% for carboxyl methyl cellulose, and within 1% for alkali swellable emulsion. The mechanical properties of the latex modified mortar are shown in Table 5.

본 발명의 합성고무 라텍스를 함유하는 몰탈 역학적 특성Mortar mechanical properties containing synthetic rubber latex of the present invention 항 목Item 실험결과Experiment result 압축강도Compressive strength 100∼110 kg/cm2 100 to 110 kg / cm 2 휨강도Flexural strength 40∼50 kg/cm2 40-50 kg / cm 2 접착강도Adhesive strength 15 kg/cm2이상15 kg / cm 2 or more 흡수율Water absorption 15% 이하15% less than

같이 본 발명은 일정량의 합성고무 라텍스를 이용하여 수밀성 콘크리트 또는 수밀성 몰탈을 제조하고 이를 교면이나 도로, 건축물의 내외벽 방수포장에 적용시킬 수 있도록 한 것으로, 본 발명에 의하면 교량이나 도로, 건축물의 내구성을 크게 증대시킬 수 있게 되고, 교량의 유지보수기간의 증대를 이룰 수 있게 되어 사회적 비용의 감소와 유지보수 비용의 절감을 도모할 수 있게 되는 효과를 얻을 수 있게 되며, 아울러 동일한 콘크리트를 재료의 기본으로 함으로서 방수재료와 기존의 콘크리트 구조물과의 결합력을 높일 수 있게 되는 등의 효과를 얻을 수 있게 된다.As described above, the present invention is to manufacture a watertight concrete or watertight mortar using a certain amount of synthetic rubber latex, and to apply it to the waterproof packaging of bridges, roads, and buildings. According to the present invention, durability of bridges, roads, buildings Can be greatly increased, and the maintenance period of the bridge can be increased, so that the social cost and maintenance cost can be reduced, and the same concrete can be used as the basis of the material. By doing so, it is possible to obtain an effect of increasing the bonding strength between the waterproofing material and the existing concrete structure.

Claims (4)

전체 중량에 대하여 스틸렌 58.3%, 부타디엔 6%, 소량의 비이온 계면활성제, 음이온 계면활성제, 과황산칼륨으로 이루어진 합성고무 라텍스(SBR Latex) 5∼6%, 시멘트 16~20%, 모래 43∼47%, 자갈 23∼26%, 물 6∼8%를 혼합한 것을 특징으로 하는 합성고무 라텍스를 함유하는 콘크리트 조성물.5 to 6% synthetic rubber latex (SBR Latex) consisting of 58.3% styrene, 6% butadiene, small amount of nonionic surfactant, anionic surfactant and potassium persulfate, 16 to 20% cement, 43 to 47% by weight Concrete composition containing synthetic rubber latex characterized by mixing%, 23 to 26% of gravel and 6 to 8% of water. 전체 중량에 대하여 스틸렌 58.3%, 부타디엔 6%, 소량의 비이온 계면활성제, 음이온 계면활성제, 과황산칼륨으로 이루어진 합성고무 라텍스(SBR Latex) 1∼4%, 시멘트 20~23%, 모래 67~69%, 물 6∼7%를 혼합한 것을 특징으로 하는 합성고무 라텍스를 함유하는 몰탈 조성물.1 to 4% synthetic rubber latex (SBR Latex) consisting of 58.3% styrene, 6% butadiene, small amounts of nonionic surfactants, anionic surfactants and potassium persulfate, 20-23% cement, 67-69% by weight %, 6-7% of water, mortar composition containing a synthetic rubber latex, characterized in that. 표면정리 및 청소를 하는 단계, 전체 중량에 대하여 스틸렌 58.3%, 부타디엔 6%, 소량의 비이온 계면활성제, 음이온 계면활성제, 과황산칼륨으로 이루어진 합성고무 라텍스(SBR Latex) 5∼6%, 시멘트 16~20%, 모래 43∼47%, 자갈 23∼26%, 물 6∼8%를 혼합한 합성고무 라텍스를 함유하는 콘크리트를 생산하는 단계, 상기 개질 콘크리트를 시공면에 1차 도포하는 단계, 상기 개질 콘크리트를 시공면에 포설하는 단계, 마감하는 단계, 양생하는 단계로 이루어지는 것을 특징으로 하는 합성고무 라텍스를 함유하는 콘크리트를 이용한 방수포장방법.Surface cleaning and cleaning, 5 to 6% synthetic rubber latex (SBR Latex) consisting of 58.3% styrene, 6% butadiene, small amount of nonionic surfactant, anionic surfactant and potassium persulfate, cement 16 Producing concrete containing synthetic rubber latex mixed with ~ 20%, 43-47% sand, 23-26% gravel, 6-8% water, the first step of applying the modified concrete to the construction surface, the Waterproof packaging method using a concrete containing synthetic rubber latex, comprising the steps of laying the modified concrete on the construction surface, finishing step, curing step. 표면정리 및 청소를 하는 단계, 전체 중량에 대하여 스틸렌 58.3%, 부타디엔 6%, 소량의 비이온 계면활성제, 음이온 계면활성제, 과황산칼륨으로 이루어진 합성고무 라텍스(SBR Latex) 1∼4%, 시멘트 20~23%, 모래 67~69%, 물 6∼7%를 혼합한 것을 특징으로 하는 합성고무 라텍스를 함유하는 몰탈을 생산하는 단계, 상기 개질 몰탈을 시공면에 1차 도포하는 단계, 상기 개질 몰탈을 시공면에 포설하는 단계, 마감하는 단계, 양생하는 단계로 이루어지는 것을 특징으로 하는 합성고무 라텍스를 함유하는 몰탈을 이용한 방수포장방법.Surface cleaning and cleaning, 1 to 4% synthetic rubber latex (SBR Latex) consisting of 58.3% styrene, 6% butadiene, a small amount of nonionic surfactant, anionic surfactant and potassium persulfate, cement 20% by weight Producing mortar containing synthetic rubber latex, characterized in that the mixture of ~ 23%, 67-69% sand, 6-7% water, the first step of applying the modified mortar to the construction surface, the modified mortar Waterproofing method using a mortar containing synthetic rubber latex comprising the step of laying on the construction surface, finishing step, curing step.
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