KR102616772B1 - Mortar composition of floor structure reducing inter-floor noise - Google Patents
Mortar composition of floor structure reducing inter-floor noise Download PDFInfo
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- KR102616772B1 KR102616772B1 KR1020210132241A KR20210132241A KR102616772B1 KR 102616772 B1 KR102616772 B1 KR 102616772B1 KR 1020210132241 A KR1020210132241 A KR 1020210132241A KR 20210132241 A KR20210132241 A KR 20210132241A KR 102616772 B1 KR102616772 B1 KR 102616772B1
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- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 62
- 239000000203 mixture Substances 0.000 title claims abstract description 47
- 239000002893 slag Substances 0.000 claims abstract description 43
- 239000004568 cement Substances 0.000 claims abstract description 20
- 229910000863 Ferronickel Inorganic materials 0.000 claims abstract description 18
- 229920003043 Cellulose fiber Polymers 0.000 claims abstract description 16
- 239000002562 thickening agent Substances 0.000 claims abstract description 10
- 239000004571 lime Substances 0.000 claims abstract description 8
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 7
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 7
- 238000010521 absorption reaction Methods 0.000 claims abstract description 7
- 239000010440 gypsum Substances 0.000 claims abstract description 7
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000004576 sand Substances 0.000 claims description 9
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 8
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims description 3
- 206010033307 Overweight Diseases 0.000 abstract description 4
- 238000009408 flooring Methods 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 45
- 230000000694 effects Effects 0.000 description 19
- 239000000843 powder Substances 0.000 description 12
- 238000001035 drying Methods 0.000 description 10
- 238000000926 separation method Methods 0.000 description 10
- 238000010276 construction Methods 0.000 description 9
- 238000002156 mixing Methods 0.000 description 9
- 230000000740 bleeding effect Effects 0.000 description 7
- 230000007774 longterm Effects 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 5
- 238000005336 cracking Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 3
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 239000011083 cement mortar Substances 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- LNAZSHAWQACDHT-XIYTZBAFSA-N (2r,3r,4s,5r,6s)-4,5-dimethoxy-2-(methoxymethyl)-3-[(2s,3r,4s,5r,6r)-3,4,5-trimethoxy-6-(methoxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6r)-4,5,6-trimethoxy-2-(methoxymethyl)oxan-3-yl]oxyoxane Chemical compound CO[C@@H]1[C@@H](OC)[C@H](OC)[C@@H](COC)O[C@H]1O[C@H]1[C@H](OC)[C@@H](OC)[C@H](O[C@H]2[C@@H]([C@@H](OC)[C@H](OC)O[C@@H]2COC)OC)O[C@@H]1COC LNAZSHAWQACDHT-XIYTZBAFSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 description 1
- 206010024264 Lethargy Diseases 0.000 description 1
- 229920001732 Lignosulfonate Polymers 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 229920003086 cellulose ether Polymers 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 239000011381 foam concrete Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229920003063 hydroxymethyl cellulose Polymers 0.000 description 1
- 229940031574 hydroxymethyl cellulose Drugs 0.000 description 1
- 239000001863 hydroxypropyl cellulose Substances 0.000 description 1
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000580 poly(melamine) Polymers 0.000 description 1
- 229920005646 polycarboxylate Polymers 0.000 description 1
- 229920000417 polynaphthalene Polymers 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
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- 238000007665 sagging Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- 230000009466 transformation Effects 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
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Classifications
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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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- 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
- 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
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/26—Carbonates
- C04B14/28—Carbonates of calcium
-
- 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
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/02—Cellulosic materials
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
- C04B18/144—Slags from the production of specific metals other than iron or of specific alloys, e.g. ferrochrome slags
-
- 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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/08—Acids or salts thereof
- C04B22/14—Acids or salts thereof containing sulfur in the anion, e.g. sulfides
- C04B22/142—Sulfates
- C04B22/143—Calcium-sulfate
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/34—Flow improvers
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/44—Thickening, gelling or viscosity increasing agents
-
- 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
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
-
- 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
- C04B2111/52—Sound-insulating materials
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
본 발명은 바닥용 모르타르 조성물에 관한 것으로서, 고중량, 고강도의 모르타르 타설이 가능하도록 시멘트, 고로 슬래그, 석고석회계 균열방지제, 유동화제, 증점제, 셀룰로오스 섬유, 및 페로니켈 슬래그 골재를 포함하여 이루어지되, 상기 고로 슬래그는 분말도가 2,500 내지 3,000㎠/g이며, 상기 페로니켈 슬래그 골재는 밀도가 3.1 내지 3.2 g/㎤이며, 흡수율이 0.5 내지 0.7%인 것을 특징으로 한다.The present invention relates to a mortar composition for flooring, which includes cement, blast furnace slag, a gypsum lime-based crack preventer, a fluidizing agent, a thickener, cellulose fiber, and ferronickel slag aggregate to enable high-weight, high-strength mortar pouring, The blast furnace slag has a fineness of 2,500 to 3,000 cm2/g, and the ferronickel slag aggregate has a density of 3.1 to 3.2 g/cm3 and an absorption rate of 0.5 to 0.7%.
Description
본 발명은 층간 소음 저감형 바닥용 모르타르 조성물에 관한 것으로서, 더욱 상세하게는, 강화된 기준에 따른 층간 소음 저감형 바닥 구조를 제조하기에 적합한 품질의 바닥용 모르타르 조성물에 관한 것이다.The present invention relates to a mortar composition for floors with reduced inter-floor noise, and more specifically, to a mortar composition for floors with a quality suitable for manufacturing a floor structure with reduced inter-floor noise in accordance with strengthened standards.
주택, 상용건물, 구조물 등과 같은 대부분의 건축물에 있어서 바닥 공사의 마감재료로서 보편적으로 사용되는 시멘트 조성물을 바닥용 모르타르 조성물로 분류하여 사용하고 있다. 상기 바닥용 모르타르 조성물은 골재와 시멘트를 임의의 비율로 혼합하고 여기에 물을 혼합하여 소정의 점착력을 가진 상태의 시멘트 조성물로서 모르타르 시공시 발생하는 하자, 특히, 층간 소음을 저감시킬 수 있도록 개발되고 있다.Cement compositions, which are commonly used as finishing materials for floor construction in most buildings such as houses, commercial buildings, and structures, are classified and used as floor mortar compositions. The floor mortar composition is a cement composition that has a predetermined adhesive force by mixing aggregate and cement in a random ratio and mixing it with water. It was developed to reduce defects that occur during mortar construction, especially noise between floors. there is.
바닥 충격음에 대해서는 사전인정제도를 통해 층간 소음을 규제하고 있었으나, 최근 주택법 및 관련 규정이 강화되는 방향으로 개정되고 있으며, 강화된 기준에 따르면 준공 후 성능확인제도가 도입되어 30세대 이상의 공동주택에 대해 전체 세대의 5%를 측정하고 성능확인결과를 제출하도록 하고 있다.Inter-floor noise was regulated through a prior recognition system for floor impact noise, but the Housing Act and related regulations have recently been revised to be strengthened, and according to the strengthened standards, a post-completion performance verification system has been introduced for apartment complexes of 30 or more households. We are required to measure 5% of all households and submit performance verification results.
종래에는 콘크리트 슬래브에 30㎜ 두께의 완충제를 시공한 후 그 위에 50㎜ 두께의 기포 콘크리트를 타성하고 40㎜ 두께의 바닥용 모르타르를 타설하여 시공하고 있는데, 이러한 시공방법으로는 강화된 기준을 충족할 수 없어 부적합 판정을 받게 된다.Conventionally, construction is done by constructing a 30mm-thick buffer on a concrete slab, then pouring 50mm-thick foam concrete on top of it and pouring 40mm-thick floor mortar. This construction method cannot meet the strengthened standards. If it cannot be done, it will be judged as unsuitable.
강화된 기준을 충족하기 위해서는, 예를 들어, 콘크리트 슬래브에 60㎜ 두께의 완충재를 시공하고 70㎜ 두께의 바닥용 모르타르를 시공하는 등 시공 두께를 두껍게 하는 방안이 있으나, 이 경우 타설 두께가 너무 두꺼워 블리딩이 증가하고 침하되는 문제가 발생하게 된다. 또한, 타설량이 증가함에 따라 타설 가능한 세대수가 감소하며, 이러한 문제를 해결하기 위한 작업성(플로우)의 증가가 요구된다. 또한, 완충재 상부에 타설할 때 균열 발생이 증가하는 문제점도 해결해야 한다.In order to meet the strengthened standards, there is a way to increase the thickness of the construction, for example by constructing a 60mm thick cushioning material on the concrete slab and constructing a 70mm thick floor mortar, but in this case, the pouring thickness is too thick. Bleeding increases and sinking problems occur. In addition, as the amount of pouring increases, the number of households that can be poured decreases, and an increase in workability (flow) is required to solve this problem. In addition, the problem of increased crack occurrence when pouring on top of the cushioning material must be resolved.
따라서 기존의 바닥용 모르타르보다 높은 중량과 강도가 요구되며, 이에 적합한 바닥용 모르타르 조성물의 개발이 필요한 실정이다.Therefore, higher weight and strength are required than existing floor mortars, and there is a need to develop a floor mortar composition suitable for this.
본 발명은 상기와 같은 종래기술의 문제점을 해결하기 위하여 안출된 것으로, 고중량, 고강도의 바닥용 모르타르를 타설할 수 있는 조성물을 제공하는 것을 그 목적으로 한다.The present invention was developed to solve the problems of the prior art as described above, and its purpose is to provide a composition that can pour high-weight, high-strength floor mortar.
또한, 소성수축, 건조수축에 의한 균열을 저감시키고 바닥 충격음(층간 소음)을 저감시킬 수 있도록 단위 용적 질량 및 압축 강도를 증가시킬 수 있는 바닥용 모르타르 조성물을 제공하는 것을 그 목적으로 한다.In addition, the purpose is to provide a mortar composition for flooring that can increase unit volume mass and compressive strength to reduce cracks due to plastic shrinkage and drying shrinkage and reduce floor impact noise (interfloor noise).
상기와 같은 과제를 해결하기 위한 본 발명의 바닥용 모르타르 조성물은 시멘트, 고로 슬래그, 석고석회계 균열방지제, 유동화제, 증점제, 셀룰로오스 섬유, 및 페로니켈 슬래그 골재를 포함하여 이루어지며, 상기 고로 슬래그는 분말도가 2,500 내지 3,000㎠/g이며, 상기 페로니켈 슬래그 골재는 밀도가 3.1 내지 3.2 g/㎤이며, 흡수율이 0.5 내지 0.7%인 것을 특징으로 한다.The floor mortar composition of the present invention for solving the above problems includes cement, blast furnace slag, a gypsum lime-based cracking preventer, a fluidizing agent, a thickener, cellulose fiber, and ferronickel slag aggregate, and the blast furnace slag is The fineness is 2,500 to 3,000 cm2/g, the ferronickel slag aggregate has a density of 3.1 to 3.2 g/cm3, and the water absorption rate is 0.5 to 0.7%.
특히, 상기 바닥용 모르타르 조성물은 시멘트 20 내지 40 중량부, 저분말도 슬래그 3 내지 10 중량부, 석고석회계 균열저감재 2 내지 5 중량부, 유동화제 0.03 내지 0.3 중량부, 증점제 0.05 내지 0.15 중량부, 셀룰로오스 섬유 0.2 내지 2.0 중량부, 및 페로니켈 슬래그 골재 30 내지 70 중량부로 이루어지는 것이 바람직하다.In particular, the floor mortar composition includes 20 to 40 parts by weight of cement, 3 to 10 parts by weight of low-powder slag, 2 to 5 parts by weight of gypsum lime-based crack reducing material, 0.03 to 0.3 parts by weight of fluidizer, and 0.05 to 0.15 parts by weight of thickener. , 0.2 to 2.0 parts by weight of cellulose fibers, and 30 to 70 parts by weight of ferronickel slag aggregate.
또한, 상기 셀룰로오스 섬유는 단섬유이며, 탄산칼슘과 혼합한 혼합물일 수 있다.Additionally, the cellulose fibers are short fibers and may be a mixture mixed with calcium carbonate.
또한, 상기 바닥용 모르타르 조성물은 단위 용적 질량이 2,200 내지 2,400㎏/㎥이며, 압축강도가 25MPa 이상일 수 있다.In addition, the floor mortar composition may have a unit volume mass of 2,200 to 2,400 kg/㎥ and a compressive strength of 25 MPa or more.
본 발명의 모르타르 조성물을 이용하면 고중량, 고강도의 바닥용 모르타르를 타설할 수 있는 효과를 나타낸다.Using the mortar composition of the present invention has the effect of pouring a high-weight, high-strength floor mortar.
또한, 소성수축, 건조수축에 의한 균열을 저감시키고 바닥 충격음(층간 소음)을 저감시킬 수 있도록 단위 용적 질량 및 압축 강도를 증가시킬 수 있는 효과를 나타낸다.In addition, it has the effect of increasing unit volume mass and compressive strength to reduce cracks due to plastic shrinkage and drying shrinkage and to reduce floor impact noise (inter-floor noise).
이하 본 발명을 상세하게 설명한다.Hereinafter, the present invention will be described in detail.
본 발명의 바닥용 모르타르 조성물은 층간 소음 저감을 위한 바닥 시공용 모르타르 조성물에 관한 것으로서, 특히 공동주택의 세대 내 바닥 시공에 적합한 특성을 가진 것이다. 상기 바닥용 모르타르 조성물은 전술한 바와 같이 강화된 바닥 충격음에 대한 기준을 충족시킬 수 있는 고중량, 고강도의 모르타르 타설에 적합한 특성을 나타낸다.The mortar composition for flooring of the present invention relates to a mortar composition for floor construction to reduce noise between floors, and has properties particularly suitable for floor construction within a unit of an apartment complex. As described above, the floor mortar composition exhibits properties suitable for pouring high-weight, high-strength mortar that can meet the standards for enhanced floor impact noise.
구체적으로 본 발명의 바닥용 모르타르 조성물은 시멘트, 고로 슬래그, 석고석회계 균열방지제, 유동화제, 증점제, 셀룰로오스 섬유, 및 페로니켈 슬래그 골재를 포함하여 이루어진다. 상기 조성물을 구성하는 고로 슬래그로는 종래의 고로 슬래그와 달리 저분말도의 고로 슬래그를 사용하고 있으며, 구체적으로는 분말도가 2,500 내지 3,000㎠/g인 것을 사용한다. 또한, 페로니켈 슬래그 골재는 밀도가 3.1 내지 3.2 g/㎤이며, 흡수율이 0.5 내지 0.7%인 것을 사용한다.Specifically, the floor mortar composition of the present invention includes cement, blast furnace slag, gypsum lime-based cracking preventer, fluidizer, thickener, cellulose fiber, and ferronickel slag aggregate. As the blast furnace slag constituting the above composition, unlike conventional blast furnace slag, blast furnace slag of low fineness is used. Specifically, blast furnace slag with a fineness of 2,500 to 3,000 cm2/g is used. In addition, the ferronickel slag aggregate has a density of 3.1 to 3.2 g/cm3 and an absorption rate of 0.5 to 0.7%.
본 발명의 바닥용 모르타르 조성물을 구성하는 시멘트는 통상의 바닥용 모르타르 조성물에 사용되는 시멘트를 사용할 수 있으며, 구체적으로, 포틀랜드 1종 시멘트, 초속경 시멘트(DENKA Super Cement) 또는 이들의 혼합물을 사용할 수 있다. 초속경 시멘트를 사용할 경우, 포틀랜드 1종 시멘트 성분에 분쇄한 칼슘설포알루미네이트를 적정량 배함하여 적절한 경화시간을 유지함으로써 높은 초기 강도 값을 발현할 수도 있다. 이때, 시멘트 혼합물 형태로 사용할 경우, 포틀랜드 1종 시멘트와 초속경 시멘트는 0.5~2:8~9.5의 중량비율로 혼합하여 사용함으로써 경제성 및 물성을 확보할 수 있다.The cement constituting the floor mortar composition of the present invention can be a cement used in a normal floor mortar composition. Specifically, Portland type 1 cement, DENKA Super Cement, or a mixture thereof can be used. there is. When using ultra-fast hardening cement, a high initial strength value can be achieved by adding an appropriate amount of pulverized calcium sulfoaluminate to the Portland type 1 cement component and maintaining an appropriate curing time. At this time, when used in the form of a cement mixture, Portland type 1 cement and ultra-fast hardening cement can be mixed and used in a weight ratio of 0.5 to 2:8 to 9.5 to ensure economic efficiency and physical properties.
상기 시멘트는 20 내지 40 중량부의 범위에서 사용하는 것이 바람직하다. 상기 시멘트의 함량이 너무 적으면 초기 강도 저하 및 접착력 저하의 문제가 발생할 수 있고, 너무 많으면 경화가 지나치게 빠르고 수화열이 많이 발생하여 초기 균열 및 수축에 의한 균열 발생의 문제가 있기 때문이다.The cement is preferably used in the range of 20 to 40 parts by weight. If the content of the cement is too small, problems of reduced initial strength and adhesion may occur, and if it is too high, hardening is too fast and a lot of hydration heat is generated, which may lead to problems of initial cracking and cracking due to shrinkage.
또한, 균열저감재로는 석고석회계 균열저감재를 사용하는 것이 바람직하다. 상기 석고석회계 균열저감재는 시멘트 성분과 화학적으로 반응하여 초기 수화열을 저감시켜 균열발생을 최소화시키고 모르타르의 수밀성을 향상시킴으로써 내구성을 향상시킬 수 있다. 상기 석고석회계 균열저감재는 2 내지 5 중량부의 범위에서 사용하는 것이 바람직한데, 상기 범위를 벗어날 경우 모르타르의 수밀성을 향상시키는 효과를 얻을 수 없으므로 상기 범위 내에서 사용하는 것이 바람직하다.In addition, it is preferable to use a gypsum lime-based crack reducing material as a crack reducing material. The gypsum-lime-based crack reducing material reacts chemically with cement components to reduce the initial heat of hydration, thereby minimizing the occurrence of cracks and improving durability by improving the water tightness of the mortar. The gypsum lime-based crack reducing material is preferably used in the range of 2 to 5 parts by weight. If it is out of the above range, the effect of improving the watertightness of the mortar cannot be obtained, so it is preferable to use it within the above range.
또한, 유동화제로는 폴리카르본산계, 리그닌술포네이트계, 폴리나프탈렌술포네이트계 및 폴리멜라민술포네이트계 중 어느 하나 또는 이들의 조합을 사용할 수 있다. 상기 유동화제를 함유함으로써 바닥용 모르타르 조성물의 유동성을 높여 작업성을 유지하면서 물 혼합량을 줄일 수 있는 효과를 얻을 수 있다. 이를 통해 바닥용 모르타르 내의 공극수량을 감소시키켜 강도향상 및 건조에 의한 수축현상을 완화시키는 효과도 얻을 수 있게 된다. 상기 유동화제는 유동성의 향상 및 블리딩 및 재료분리의 안정성을 고려하여 사용되는데, 0.03 내지 0.3 중량부의 함량 범위 내에서 사용되는 것이 바람직한 것으로 나타났다.Additionally, as the fluidizing agent, any one of polycarboxylic acid-based, lignin sulfonate-based, polynaphthalene sulfonate-based, and polymelamine sulfonate-based or a combination thereof may be used. By containing the fluidizing agent, the fluidity of the floor mortar composition can be increased, thereby maintaining workability and reducing the amount of water mixed. Through this, it is possible to reduce the amount of voids in the floor mortar, thereby improving strength and alleviating shrinkage due to drying. The fluidizing agent is used in consideration of the improvement of fluidity and the stability of bleeding and material separation, and it was found to be preferable to use it within the content range of 0.03 to 0.3 parts by weight.
또한, 상기 증점제는 바닥용 모르타르 조성물의 재료분리 안정성을 위하여 사용된다. 구체적으로는 메틸 셀룰로오스, 에틸 셀룰로오스, 히드록시메틸 셀룰로오스, 히드록시에틸 셀룰로오스, 카복시메틸 셀룰로오스, 히드록시프로필 셀룰로오스 등의 비이온성 셀룰로오스 에테르류 및 폴리사카라이드 수용성 폴리머 중 어느 하나 또는 이들의 조합을 사용할 수 있다. 상기 증점제는 재료분리 안정성 및 작업성을 고려하여 0.05 내지 0.15 중량부의 범위에서 사용할 수 있다. 상기 증점제의 함량이 너무 적으면 재료분리방지 효과가 미미하고, 너무 많아도 시멘트 모르타르 점성이 과도하게 높아져 작업성이 저하되기 때문이다.Additionally, the thickener is used to ensure material separation stability of the floor mortar composition. Specifically, any one or a combination of nonionic cellulose ethers and polysaccharide water-soluble polymers such as methyl cellulose, ethyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, carboxymethyl cellulose, and hydroxypropyl cellulose can be used. there is. The thickener can be used in the range of 0.05 to 0.15 parts by weight in consideration of material separation stability and workability. If the content of the thickener is too small, the effect of preventing material separation is minimal, and if it is too high, the viscosity of the cement mortar increases excessively and workability deteriorates.
또한, 본 발명의 바닥용 모르타르 조성물은 저분말도 슬래그를 함유할 수 있으며, 상기 저분말도 슬래그로는 고로 슬래그를 사용할 수 있다. 고로 슬래그의 경우 종래의 바닥용 모르타르 조성물에 적용할 때 초기 압축강도가 저하되는 것을 보상하고, 장기강도를 증진하기 위해 4,000 내지 5,000㎠/g의 고분말도의 슬래그를 사용하였다. 그러나 고분말도의 슬래그는 초기 반응에 의한 자기수축과 장기적인 건조수축 균열발생 측면에서 불리한 특성을 나타냈다. 따라서 본 발명에서는 분말도가 2,500 내지 3,000㎠/g의의 저분말도 슬래그를 사용하고 있다. 상기 저분말도 슬래그를 사용하면 기존의 고로 슬래그와는 달리 분말도의 차이에 따른 혼수량이 줄어들기 때문에 28일 압축강도 기준 동일강도 수준을 나타내고 초기 소성수축과 장기 건조수축이 적어 균열발생이 낮아지는 것을 확인하였다.Additionally, the floor mortar composition of the present invention may contain low-powder slag, and blast furnace slag may be used as the low-powder slag. In the case of blast furnace slag, slag with a high powder fineness of 4,000 to 5,000 cm2/g was used to compensate for the decrease in initial compressive strength when applied to a conventional floor mortar composition and to improve long-term strength. However, high-powder slag showed unfavorable characteristics in terms of self-contraction due to the initial reaction and the occurrence of long-term drying shrinkage cracks. Therefore, in the present invention, low-powder slag with a fineness of 2,500 to 3,000 cm2/g is used. When using the low-powder slag, unlike conventional blast furnace slag, the mixing amount due to the difference in fineness is reduced, so it shows the same strength level based on 28-day compressive strength and has less initial plastic shrinkage and long-term drying shrinkage, which reduces the occurrence of cracks. confirmed.
상기 저분말도 슬래그는 상기와 같은 효과를 고려하여 3 내지 10 중량부의 범위에서 사용하는 것이 바람직하다.Considering the above effects, the low-powder slag is preferably used in the range of 3 to 10 parts by weight.
또한, 상기 셀룰로오스 섬유는 식물성 섬유로 합성섬유와는 달리 섬유 내 모세관을 통해 수분함유와 전달이 용이한 특징을 나타낸다. 따라서 상기 셀룰로오스 섬유를 바닥용 모르타르 조성물에 함유함으로써 작업성을 증대시키고 가사시간을 연장하는 효과를 얻을 수 있다. 또한, 상기 셀룰로오스 섬유는 길이 40㎛의 단섬유로써 단위수량을 증가시키지 않는 장점이 있다. 또한, 점도를 높여 모르타르의 재료분리와 처짐을 방지하고 보수성을 증대하는 효과도 얻을 수 있다. 이러한 효과로 인하여 타설 후 초기에 발생하는 소성균열을 방지하고, 타설 후 양생 시에는 함수율의 완만한 감소를 일으키고, 인장강도를 증대시켜 크랙 저항 및 수축저감 효과를 얻을 수 있다.In addition, the cellulose fiber is a vegetable fiber, and unlike synthetic fibers, it has the characteristic of easily containing and transferring moisture through capillaries within the fiber. Therefore, by including the cellulose fibers in the floor mortar composition, the effect of increasing workability and extending pot life can be obtained. In addition, the cellulose fiber is a single fiber with a length of 40㎛ and has the advantage of not increasing the unit quantity. In addition, by increasing the viscosity, it is possible to prevent material separation and sagging of the mortar and increase water retention. Due to this effect, plastic cracks that occur early after pouring can be prevented, moisture content can be gently reduced during curing after pouring, and tensile strength can be increased to achieve crack resistance and shrinkage reduction effects.
일반적인 셀룰로오스 섬유의 경우 흐름성이 낮아 제품 생산 시 계량 시간이 많이 소요되어 생산효율을 저하시키는 문제점이 있다. 따라서 상기 셀룰로오스 섬유를 바닥용 모르타르 조성물에 혼합할 때 셀룰로오스 섬유와 탄산칼슘를 50:50의 중량비로 혼합하여 사용하면 흐름성을 개선하여 생산효율을 증가시키고, 물 혼합시 섬유의 분산성능을 높이는 효과를 얻을 수 있는 것으로 나타났다.In the case of general cellulose fibers, there is a problem in that the flowability is low and a lot of weighing time is required during product production, which reduces production efficiency. Therefore, when mixing the cellulose fibers with the floor mortar composition, mixing cellulose fibers and calcium carbonate at a weight ratio of 50:50 improves flowability, increases production efficiency, and increases the dispersion performance of the fibers when mixed with water. It turned out to be obtainable.
상기 셀룰로오스 섬유의 사용량은 이러한 조성물 내에서 효과를 감안하여 결정되며 0.2 내지 2.0 중량부의 범위에서 사용하는 것이 바람직하다.The amount of the cellulose fiber used is determined considering its effects in the composition, and is preferably used in the range of 0.2 to 2.0 parts by weight.
또한, 본 발명에서는 페로니켈 슬래그를 골재 성분으로 사용하고 있다.Additionally, in the present invention, ferronickel slag is used as an aggregate component.
상기 페로니켈 슬래그 골재는 Fe, Ni 성분을 함유한 천연광석을 전기로에서 용융하고 비중치를 이용하여 금속 성분을 생산하고 남은 슬래그를 골재로 가공한 것이다. 상기 페로니켈 슬래그 골재로는 밀도가 3.1 내지 3.2g/㎤인 것을 사용하는 것이 바람직하다. 일반 골재의 밀도는 2.5 내지 2.8g/㎤인데 비하여 상기 페로니켈 슬래그 골재는 밀도가 상대적으로 높아 바닥용 모르타르 조성물에 함유됨으로써 모르타르의 단위 용적 중량을 증가시키는 효과를 나타내게 된다. 이로 인하여 중량 충격음 저감에 대한 효과를 증대시킬 수 있다. 또한, 상기 페로니켈 슬래그 골재는 흡수율이 0.5 내지 0.7%인 것을 사용하는데, 일반 골재의 흡수율 0.8 내지 1.2%보다 낮기 때문에 바닥용 모르타르의 혼수량을 감소시켜 압축강도를 증진시키는 효과를 얻을 수 있다.The ferronickel slag aggregate is obtained by melting natural ore containing Fe and Ni components in an electric furnace, producing metal components using specific gravity, and processing the remaining slag into aggregate. It is preferable to use the ferronickel slag aggregate having a density of 3.1 to 3.2 g/cm3. While the density of general aggregate is 2.5 to 2.8 g/cm3, the density of the ferronickel slag aggregate is relatively high, so when it is included in the floor mortar composition, it has the effect of increasing the unit volume weight of the mortar. As a result, the effect on reducing weight impact noise can be increased. In addition, the ferronickel slag aggregate is used with a water absorption rate of 0.5 to 0.7%, which is lower than the water absorption rate of general aggregates of 0.8 to 1.2%, so it can achieve the effect of improving compressive strength by reducing the mixing amount of floor mortar.
상기 페로니켈 슬래그 골재는 30 내지 70 중량부의 범위에서 사용하는데, 상기 범위에서 바닥용 모르타르에 요구되는 단위 용적 중량 증가, 압축강도 증진의 효과가 우수한 것으로 나타났다.The ferronickel slag aggregate is used in the range of 30 to 70 parts by weight, and in this range, the effect of increasing the unit volume weight required for floor mortar and improving compressive strength was found to be excellent.
또한, 상기 페로니켈 슬래그 골재와 함께 건조사를 혼합하여 사용할 수 있다. 상기 건조사는 0 내지 40 중량부의 범위에서 포함할 수 있다. 건조사를 함유하는 경우 모르타르의 마감시간 촉진과 균열발생을 억제하는 효과를 얻을 수 있다. 상기 건조사로는 함수율이 0.3% 이하인 것을 사용하는데, 함수율이 너무 높아도 건조사를 사용함에 따른 효과를 얻을 수 없기 때문에 바닥용 모르타르 조성물의 제조시 상기 건조사의 함수율을 상기 범위 내로 하여 혼합하는 것이 바람직하다.Additionally, dried sand can be mixed and used with the ferronickel slag aggregate. The dried yarn may be included in the range of 0 to 40 parts by weight. Containing dry sand can have the effect of accelerating the mortar finishing time and suppressing the occurrence of cracks. The dried sand is used with a moisture content of 0.3% or less. Since the effect of using dried sand cannot be obtained even if the moisture content is too high, it is preferable to mix the dried sand with the moisture content within the above range when producing a floor mortar composition. do.
이하 실시예를 통하여 본 발명의 바닥용 모르타르 조성물의 효과를 설명한다.The effect of the floor mortar composition of the present invention will be explained through the following examples.
[재료][ingredient]
본 발명의 실시예 및 비교예에 따른 바닥용 모르타르 조성물 및 모르타르층을 제조하기 위해 다음과 같이 재료를 준비하였다.To prepare the floor mortar composition and mortar layer according to the examples and comparative examples of the present invention, materials were prepared as follows.
골재 A: 밀도 2.6~2.7g/㎤의 해사(세척사) 및 부순잔골재Aggregate A: Sea sand (washed sand) and crushed fine aggregate with a density of 2.6~2.7g/㎤
골재 B: 밀도 3.1~3.2g/㎤, 흡수율 0.5~0.7%의 페로니켈 슬래그 골재Aggregate B: ferronickel slag aggregate with density 3.1~3.2g/cm3 and water absorption rate 0.5~0.7%
결합재: 밀도 3.1±1g/㎤의 포틀랜드 시멘트Binder: Portland cement with density 3.1±1g/cm3
혼화재 A: 밀도 2.9±1g/㎤의 석회석 분말Admixture A: Limestone powder with density 2.9±1g/cm3
혼화재 B: 밀도 2.9±1g/㎤의 고분말도(4,000~5,000㎠/g) 고로 슬래그Admixture B: High-powder fineness (4,000~5,000㎠/g) blast furnace slag with a density of 2.9±1g/㎤
혼화재 C: 밀도 2.9±1g/㎤의 저분말도(2,500~3,000㎠/g) 고로 슬래그Admixture C: Low-powder fineness (2,500~3,000㎠/g) blast furnace slag with a density of 2.9±1g/㎤
혼화재 D: 밀도 2.9±1g/㎤의 균열방지재Admixture D: Crack prevention material with a density of 2.9±1g/cm3
혼화제 A: 폴리카르복실레이트계 분산제Admixture A: Polycarboxylate-based dispersant
혼화제 B: 하이드록시에틸셀룰로오스 증점제Admixture B: Hydroxyethylcellulose thickener
혼화제 C: 길이 40㎛의 셀룰로오스 섬유 (섬유와 탄산칼슘을 50:50 중량비로 혼합)Admixture C: Cellulose fiber with a length of 40㎛ (fiber and calcium carbonate mixed at a weight ratio of 50:50)
[실시예 1][Example 1]
하기 표 1에서와 같이 모르타르 조성물 100 중량부를 기준으로, 골재 B 68 중량부, 결합재 24 중량부, 혼화재 C 6 중량부, 혼화재 D 2 중량부, 혼화제 A 0.1중량부, 혼화제 B 0.1 중량부, 혼화제 C 1.0 중량부를 믹서에 투입하여 혼합하여 모르타르 조성물을 제조하였다.As shown in Table 1 below, based on 100 parts by weight of the mortar composition, 68 parts by weight of aggregate B, 24 parts by weight of binder, 6 parts by weight of admixture C, 2 parts by weight of admixture D, 0.1 part by weight of admixture A, 0.1 part by weight of admixture B, admixture 1.0 parts by weight of C was added to a mixer and mixed to prepare a mortar composition.
[실시예 2][Example 2]
하기 표 1에서와 같이 모르타르 조성물 100 중량부를 기준으로, 골재 A 34 중량부, 골재 B 34 중량부, 결합재 24 중량부, 혼화재 C 6 중량부, 혼화재 D 2 중량부, 혼화제 A 0.1 중량부, 혼화제 B 0.1 중량부, 혼화제 C 1.0 중량부를 믹서에 투입하여 혼합하여 모르타르 조성물을 제조하였다.As shown in Table 1 below, based on 100 parts by weight of the mortar composition, 34 parts by weight of aggregate A, 34 parts by weight of aggregate B, 24 parts by weight of binder, 6 parts by weight of admixture C, 2 parts by weight of admixture D, 0.1 part by weight of admixture A, admixture A mortar composition was prepared by adding 0.1 parts by weight of B and 1.0 parts by weight of admixture C into a mixer and mixing.
[비교예 1 내지 비교예 10][Comparative Examples 1 to 10]
하기 표 1에 나타낸 배합비로 비교예 1 내지 비교예 10에 따른 모르타르 조성물을 제조하였다. 표 1에서 단위는 중량부이다.Mortar compositions according to Comparative Examples 1 to 10 were prepared using the mixing ratios shown in Table 1 below. In Table 1, the unit is parts by weight.
[실험예][Experimental example]
실시예 1 내지 2 및 비교예 1 내지 10의 물성을 실험하여 그 결과를 표 2 및 표 3에 나타내었다. The physical properties of Examples 1 to 2 and Comparative Examples 1 to 10 were tested, and the results are shown in Tables 2 and 3.
구체적으로 플로우는 작업성을 측정하기 위한 것으로 KS L 5111에 명시된 윗지름 70㎜, 아래지름 100㎜, 높이 50㎜로 된 플로우콘을 사용하여 플로우콘에 채운 후 다짐을 하지 않은 상태에서 플로우콘을 들어올려 플로우를 측정하였다. 단위용적중량은 1ℓ 용기에 모르타르를 채워 무게를 측정하는 방법으로, 압축강도는 KS L 5220 방법(건조 시멘트 모르타르)으로, 블리딩 및 재료분리는 KS F 2433 방법(주입 모르타르의 블리딩률 및 팽창률 시험방법)으로, 건조수축율 측정은 상기 각 물혼합비빔된 모르타르를 40mm× 40mm× 160mm의 몰드에 채운후 온도 20± 2℃, 포화습도상태에서 24시간동안 존치한 후 탈형하여, 마이크로메터 게이지로 초기 길이를 측정하고, 표준온도 20± 2℃, 습도 65± 5%의 양생조건에서 28일동안 양생한 후 모르타르의 나중 길이를 측정하여, 백분율로 모르타르의 수축 길이변화율을 계산 방법으로 각각 측정하였다.Specifically, flow is used to measure workability. A flow cone with an upper diameter of 70 mm, a lower diameter of 100 mm, and a height of 50 mm specified in KS L 5111 is used to fill the flow cone and then compact the flow cone. The flow was measured by lifting. The unit volume weight is measured by filling a 1 liter container with mortar, the compressive strength is measured by the KS L 5220 method (dry cement mortar), and the bleeding and material separation are measured by the KS F 2433 method (bleeding rate and expansion rate test method for injection mortar). ), the drying shrinkage rate is measured by filling each water-mixed mortar into a mold of 40 mm was measured, and the final length of the mortar was measured after curing for 28 days under curing conditions of a standard temperature of 20 ± 2°C and humidity of 65 ± 5%, and the rate of change in shrinkage length of the mortar in percentage was measured by calculating each method.
(%)lethargy
(%)
(㎜)flow value
(㎜)
(㎏/㎡)Unit usage
(kg/㎡)
(%)change in length
(%)
실시예 1 내지 2의 결과를 살펴보면, 고밀도 페로니켈 슬래그 골재를 사용하여 단위 용적 질량이 높아졌다. 또한, 비교예 1 및 2와 플로우가 유사하면서도 재료분리나 블리딩이 발생하지 않으며, 길이변화도 유사하여 건설현장 실적용 시 작업성이나 내구성의 안정성을 확보한 배합인 것으로 확인하였다.Looking at the results of Examples 1 and 2, the unit volume mass was increased by using high-density ferronickel slag aggregate. In addition, although the flow was similar to Comparative Examples 1 and 2, material separation or bleeding did not occur, and the change in length was also similar, so it was confirmed that it was a formulation that ensured stability in workability and durability when used in construction sites.
실시예 1 내지 2에서 높은 단위 용적 질량을 유지하기 위하여 혼화제 A(분산제)를 사용하여 밀도가 낮은 물의 혼합량을 감소시킬 수 있었다. 구체적으로, 저점도의 하이드록시에틸셀루로오스 증점제와 셀룰로오스 섬유를 사용하여 재료분리방지와 높은 작업성을 달성할 수 있었다.In Examples 1 and 2, the mixing amount of low-density water could be reduced by using admixture A (dispersant) in order to maintain a high unit volume mass. Specifically, it was possible to prevent material separation and achieve high workability by using a low-viscosity hydroxyethylcellulose thickener and cellulose fiber.
비교예 1은 경량골재(해사, 부순잔골재)를 사용한 기존에 널리 사용되고 있는 일반 강도 건조 모르타르이며, 비교예 2는 고강도 건조 모르타르와 같은 정도의 결과를 얻었다.Comparative Example 1 is a widely used general strength dry mortar using lightweight aggregate (sea sand, crushed fine aggregate), and Comparative Example 2 obtained the same results as high strength dry mortar.
또한, 비교예 3의 경우 중량잔골재에 비해 분체량이 과소하여 재료분리 및 블리딩이 발생하는 것으로 나타났다. In addition, in the case of Comparative Example 3, the amount of powder was small compared to the heavy fine aggregate, resulting in material separation and bleeding.
또한, 비교예 4의 경우 결합재량 과다로 점성이 높아 작업성이 떨어지고, 건조수축률이 증가하여 실시예 1 내지 2 대비 장기적으로 균열발생이 클 수 있는 것으로 파악되었다.In addition, in the case of Comparative Example 4, the viscosity was high due to an excessive amount of binder, resulting in poor workability and increased drying shrinkage, which resulted in greater crack occurrence in the long term compared to Examples 1 and 2.
또한, 비교예 5는 혼화재 B의 효과가 미미해 초기 압축 강도 값이 크고, 건조수축률이 증가하여 실시예 1 내지 2 대비 장기적으로 균열이 발생할 수 있는 것으로 나타났다.In addition, Comparative Example 5 showed that the effect of admixture B was insignificant, so the initial compressive strength value was large and the drying shrinkage rate increased, leading to long-term cracking compared to Examples 1 and 2.
또한, 비교예 6은 혼화재 B의 사용량이 과다하여 실시예 1 내지 2 대비 압축강도가 저하되는 결과를 얻었다.In addition, in Comparative Example 6, the amount of admixture B used was excessive, resulting in a decrease in compressive strength compared to Examples 1 and 2.
또한, 비교예 7은 균열 방지재를 혼합하지 않아 실시예 1 내지 2에 비해 건조수축률이 3배 이상 높게 나타났으며, 균열발생이 클 것으로 파악되었다.In addition, in Comparative Example 7, the drying shrinkage rate was more than 3 times higher than that of Examples 1 and 2 because the crack prevention material was not mixed, and the occurrence of cracks was found to be large.
또한, 비교예 8은 혼화재 B로 인한 압축강도 증대로 건조수축률이 증가하여 실시예 1 내지 2 대비 장기적으로 균열발생이 클 것으로 파악되었다.In addition, in Comparative Example 8, the drying shrinkage rate increased due to the increase in compressive strength due to the admixture B, and it was found that the occurrence of cracks was greater in the long term than in Examples 1 and 2.
또한, 비교예 9는 혼화제C(섬유) 사용량 과다로 인한 점성 증가로 실시예 1 내지 2 대비 작업성 저하가 발생할 수 있을 것으로 파악되었다.In addition, it was found that in Comparative Example 9, workability may be reduced compared to Examples 1 and 2 due to increased viscosity due to excessive use of admixture C (fiber).
또한, 비교예 10은 골재 B의 치환량이 적기 때문에 단위 용중값이 낮아 실시예 1 내지 2 대비 층간소음 효과가 떨어질 것으로 파악되었다.In addition, Comparative Example 10 was found to have a low unit load value because the substitution amount of aggregate B was small, and thus the interfloor noise effect would be lower than that of Examples 1 and 2.
따라서 본 발명에 따른 바닥용 모르타르 조성물의 성분과 그 조합에 의해 층간 소음 저감 효과를 얻을 수 있는 모르타르 시공에 적합한 물성을 얻을 수 있는 것으로 파악되었다.Therefore, it was found that the components of the floor mortar composition according to the present invention and their combination can be used to obtain physical properties suitable for mortar construction that can achieve an inter-floor noise reduction effect.
본 발명은 상술한 바와 같이 바람직한 실시예를 들어 도시하고 설명하였으나, 상기 실시예에 한정되지 아니하며 본 발명의 정신을 벗어나지 않는 범위 내에서 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의해 다양한 변형과 변경이 가능하다. 그러한 변형예 및 변경예는 본 발명과 첨부된 특허청구범위의 범위 내에 속하는 것으로 보아야 한다.Although the present invention has been shown and described with reference to preferred embodiments as described above, it is not limited to the above embodiments and may be modified in various ways by those skilled in the art without departing from the spirit of the invention. Transformation and change are possible. Such modifications and variations should be considered to fall within the scope of the present invention and the appended claims.
Claims (4)
상기 고로 슬래그는 분말도가 2,500 내지 3,000㎠/g이며,
상기 페로니켈 슬래그 골재는 밀도가 3.1 내지 3.2 g/㎤이며, 흡수율이 0.5 내지 0.7%인 것을 특징으로 하는 바닥용 모르타르 조성물.
20 to 40 parts by weight of cement, 3 to 10 parts by weight of blast furnace slag, 2 to 5 parts by weight of gypsum lime-based crack prevention material, 0.03 to 0.3 parts by weight of fluidizing agent, 0.05 to 0.15 parts by weight of thickener, 0.2 to 2.0 parts by weight of cellulose fiber, A floor mortar composition consisting of 30 to 70 parts by weight of ferronickel slag aggregate and 0 to 40 parts by weight of dry sand,
The blast furnace slag has a fineness of 2,500 to 3,000㎠/g,
The ferronickel slag aggregate has a density of 3.1 to 3.2 g/cm3 and a water absorption rate of 0.5 to 0.7%.
상기 셀룰로오스 섬유는 단섬유이며, 탄산칼슘과 혼합한 혼합물인 것을 특징으로 하는 바닥용 모르타르 조성물.
In claim 1,
A floor mortar composition, characterized in that the cellulose fibers are short fibers and are a mixture mixed with calcium carbonate.
상기 바닥용 모르타르 조성물은 단위 용적 질량이 2,200 내지 2,400㎏/㎥이며, 압축강도가 25MPa 이상인 것을 특징으로 하는 바닥용 모르타르 조성물.In claim 1,
The mortar composition for floors has a unit volume mass of 2,200 to 2,400 kg/㎥ and a compressive strength of 25 MPa or more.
Priority Applications (1)
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004525845A (en) * | 2000-11-06 | 2004-08-26 | インスティテュート オブ ペーパー サイエンスアンド テクノロジー インコーポレイテッド | Fiber reinforced mineral base material and method for producing the same |
| JP2010189202A (en) * | 2009-02-16 | 2010-09-02 | Dc Co Ltd | Cement composition, cement admixture and concrete using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100340296B1 (en) | 1999-09-28 | 2002-06-12 | 정환진 | Composition of flat mortar |
| KR100873156B1 (en) | 2007-12-27 | 2008-12-10 | (주)유성테크 | Environmental mortar compositons |
| KR101052602B1 (en) | 2008-08-25 | 2011-07-29 | 한일시멘트 (주) | High performance floor mortar composition using fluidizing compound and method for preparing same |
| KR101276085B1 (en) | 2011-08-12 | 2013-06-18 | 한일시멘트 (주) | flooring cement mortar composition which can crack prevention |
| KR101788080B1 (en) * | 2016-01-20 | 2017-10-19 | 한일시멘트 (주) | Cement Based Non-Plastering Floor Screed Mortar Composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004525845A (en) * | 2000-11-06 | 2004-08-26 | インスティテュート オブ ペーパー サイエンスアンド テクノロジー インコーポレイテッド | Fiber reinforced mineral base material and method for producing the same |
| JP2010189202A (en) * | 2009-02-16 | 2010-09-02 | Dc Co Ltd | Cement composition, cement admixture and concrete using the same |
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