KR102533370B1 - Mortar compound for achitectural 3d-printer - Google Patents
Mortar compound for achitectural 3d-printer Download PDFInfo
- Publication number
- KR102533370B1 KR102533370B1 KR1020200145667A KR20200145667A KR102533370B1 KR 102533370 B1 KR102533370 B1 KR 102533370B1 KR 1020200145667 A KR1020200145667 A KR 1020200145667A KR 20200145667 A KR20200145667 A KR 20200145667A KR 102533370 B1 KR102533370 B1 KR 102533370B1
- Authority
- KR
- South Korea
- Prior art keywords
- mortar
- weight
- printer
- admixture
- construction
- Prior art date
Links
Images
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/001—Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
-
- 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
- C04B14/38—Fibrous materials; Whiskers
- C04B14/42—Glass
-
- 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
- C04B16/04—Macromolecular compounds
- C04B16/06—Macromolecular compounds fibrous
- C04B16/0675—Macromolecular compounds fibrous from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B16/0683—Polyesters, e.g. polylactides
-
- 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
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/2623—Polyvinylalcohols; Polyvinylacetates
-
- 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
-
- 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
- C04B2103/10—Accelerators; Activators
- C04B2103/12—Set accelerators
-
- 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
- C04B2103/302—Water reducers
-
- 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
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00181—Mixtures specially adapted for three-dimensional printing (3DP), stereo-lithography or prototyping
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
Abstract
본 발명은 건축용 3D 프린터를 위한 몰탈 조성물에 관한 것으로, 더욱 상세하게는 건축용 3D 프린터에서 사용되는 몰탈의 배합비를 특정함으로써, 3D 프린터를 이용하여 건축물을 프린팅하는 경우에도 몰탈이 일정강도를 가져 적층시 몰탈이 퍼지는 것을 방지할 수 있는 건축용 3D 프린터를 위한 몰탈 조성물에 관한 발명으로서,
건축용 3D 프린터를 위한 몰탈 조성물에 있어서, 시멘트 44 ~ 52 중량%, 모래 19.2 ~ 23 중량%, 물 28 ~ 32 중량% 및 혼화제 0.8 ~ 1 중량%로 이루어지는 것을 특징으로 하는 건축용 3D 프린터를 위한 몰탈 조성물을 제공한다.The present invention relates to a mortar composition for a 3D printer for construction, and more particularly, by specifying a mixing ratio of mortar used in a 3D printer for construction, even when a building is printed using a 3D printer, the mortar has a certain strength during stacking As an invention related to a mortar composition for a 3D printer for construction that can prevent the spread of mortar,
A mortar composition for a 3D printer for construction, comprising 44 to 52% by weight of cement, 19.2 to 23% by weight of sand, 28 to 32% by weight of water, and 0.8 to 1% by weight of an admixture. provides
Description
본 발명은 건축용 3D 프린터를 위한 몰탈 조성물에 관한 것으로, 더욱 상세하게는 건축용 3D 프린터에서 사용되는 몰탈의 배합비를 특정함으로써, 3D 프린터를 이용하여 건축물을 프린팅하는 경우에도 몰탈이 일정강도를 가져 적층시 몰탈이 퍼지는 것을 방지할 수 있는 건축용 3D 프린터를 위한 몰탈 조성물에 관한 발명이다.The present invention relates to a mortar composition for a 3D printer for construction, and more particularly, by specifying a mixing ratio of mortar used in a 3D printer for construction, even when a building is printed using a 3D printer, the mortar has a certain strength during stacking The invention relates to a mortar composition for a 3D printer for construction that can prevent the spread of mortar.
일반적으로 철근콘크리트 구조물은 높은 압축강도를 가져 각종 건축물의 벽체, 슬라브 등의 구조물로 널리 시공되고 있다.In general, reinforced concrete structures have high compressive strength and are widely used as structures such as walls and slabs of various buildings.
이러한 철근콘크리트 구조물은 일반적으로 기초물 상에 철근을 배열하여 설치하고 상기 설치된 철근을 둘러싸는 거푸집(형틀)을 조성하여 그 사이에 콘크리트를 타설한 후 콘크리트가 양생되면 다시 형틀을 제거하는 공정을 거쳐 시공되었다.Such a reinforced concrete structure generally arranges and installs reinforcing bars on a foundation, forms a formwork (formwork) surrounding the installed reinforcing bars, pours concrete therebetween, and then removes the formwork again when the concrete is cured. has been constructed
그런데 이러한 종래의 철근콘크리트 구조물의 시공방법에 의하면, 거푸집을 설치해야만 하고, 콘크리트가 양생된 후에는 다시 거푸집을 일일이 해체해야 하기 때문에 공정의 수가 많고 복잡하여 작업이 번거롭고 작업공수가 늘어나게 하는 요인이 됨으로써 전체 건축공기를 지연시키는 문제점이 있었으며, 또한 거푸집은 항구적인 구성요소가 아니라 철거해야 하는 요소이므로 거푸집을 조성하고 해체하는 것은 필수적으로 물자와 건축비용의 낭비를 초래한다는 문제점이 있었다.However, according to the conventional construction method of reinforced concrete structures, since the formwork must be installed and the formwork must be dismantled again after the concrete is cured, the number of processes is many and complicated, which makes the work cumbersome and increases the work man-hours. There was a problem of delaying the entire construction period, and since the formwork is not a permanent component but an element that must be demolished, creating and dismantling the formwork inevitably causes waste of materials and construction costs.
최근에는 프린팅을 통해 3차원 형상의 제품을 성형하는 3D 프린팅 제조기술이 각광받고 있으며, 상기한 종래의 문제 해결을 위하여 3D 프린팅을 이용하여 건축물을 제조하려는 시도가 이루어지고 있다.Recently, 3D printing manufacturing technology for shaping three-dimensional products through printing has been in the limelight, and attempts have been made to manufacture buildings using 3D printing to solve the above conventional problems.
한편, 각종 건축 및 토목 구조물의 구조체로 사용되는 몰탈은 물과 시멘트, 모래 등이 섞여있는 물질로서, 시멘트가 물과 반응하여 굳어지는 수화반응을 이용하는데, 3D 프린팅 기법으로 별도 거푸집 없이 다양한 형상의 건축물을 제조하고자 할 경우 압출헤드에서 압출되는 속도에 비해 콘크리트의 응고 속도가 느려서, 3D 프린터에 의한 3D 형상 제작시간이 응고속도에 큰 영향을 받게 된다.On the other hand, mortar used as a structure for various architectural and civil engineering structures is a mixture of water, cement, and sand, and uses a hydration reaction in which cement reacts with water to harden. When manufacturing a building, the solidification speed of concrete is slow compared to the speed extruded from the extrusion head, so the 3D shape production time by the 3D printer is greatly affected by the solidification speed.
즉, 3D 프린터의 압출헤드는 빠른 속도로 움직이면서 콘크리트를 압출하게 되나, 압출된 콘크리트의 응고에 상당한 시간이 소요되는 관계로, 완전히 응고되지 않은 층 위로 다시 콘크리트가 압출되는 경우, 고른 적층이 이루어지지 않고 제품의 형상이 뭉개질 수 있다는 문제점이 있다.That is, the extrusion head of the 3D printer extrudes concrete while moving at a high speed, but it takes a considerable amount of time for the extruded concrete to solidify, so when the concrete is extruded again onto a layer that has not completely solidified, an even layering may not be achieved. There is a problem that the shape of the product may be crushed without it.
또한, 한층을 적층하고 응고되어 어느 정도의 강도를 가지도록 한 후, 다시 그 위의 3D 프린터로 층을 적층하는 방식으로 작업을 진행하는 경우에는, 작업 시간이 현저하게 증가되어 생산성이 저하되는 문제가 있다.In addition, when a layer is laminated and solidified to have a certain level of strength, and then the layer is laminated again with a 3D printer thereon, the work time is significantly increased and productivity is lowered. there is
건축물을 몰탈을 이용하여 3D 프린터로 제조하기 위해서는 일정한 강도를 가진 몰탈의 지속적인 공급이 가능해야 하고, 3D 프린터로 몰탈을 적층하는 경우 몰탈의 변형이 적어야 하며, 적층을 위한 안정화 시간이 짧아야 하고, 제조된 건축물이 기본적인 품질 특성을 만족할만한 강도, 내구성을 만족시켜야 하는 어려움이 있다.In order to manufacture a building with a 3D printer using mortar, it is necessary to continuously supply mortar with a certain strength, and when laminating mortar with a 3D printer, the deformation of the mortar must be small and the stabilization time for stacking must be short. There is a difficulty in satisfying the strength and durability of a building to satisfy the basic quality characteristics.
본 발명은 상기와 같은 문제점을 해결하기 위해 안출된 것으로서, 건축용 3D 프린터에 사용이 가능한 몰탈 조성물을 제공함을 목적으로 한다.The present invention has been made to solve the above problems, and an object of the present invention is to provide a mortar composition that can be used in a 3D printer for construction.
또한, 본 발명은 건축용 3D 프린팅시 강도를 유지함으로써 몰탈의 퍼짐없이 작업이 가능한 건축용 3D 프린터에 사용이 가능한 몰탈 조성물을 제공함을 목적으로 한다.In addition, an object of the present invention is to provide a mortar composition that can be used in an architectural 3D printer capable of working without mortar spreading by maintaining strength during architectural 3D printing.
또한, 본 발명은 건축용 3D 프린터로 프린팅시 크랙이나 뒤틀림을 방지할 수 있는 건축용 3D 프린터에 사용이 가능한 몰탈 조성물을 제공함을 목적으로 한다.In addition, an object of the present invention is to provide a mortar composition that can be used in a 3D printer for construction, which can prevent cracks or warping during printing by the 3D printer for construction.
또한, 본 발명은 건축용 3D 프린터로 프린팅시 충분한 인장강도가 유지됨으로써 슬럼프 값이 일정한 범위 이상을 가지는 건축용 3D 프린터에 사용이 가능한 몰탈 조성물을 제공함을 목적으로 한다.In addition, an object of the present invention is to provide a mortar composition that can be used in a 3D printer for construction, having a slump value greater than or equal to a certain range by maintaining sufficient tensile strength during printing with the 3D printer for construction.
상기의 목적을 달성하기 위해 본 발명은, 건축용 3D 프린터를 위한 몰탈 조성물에 있어서, 시멘트 44 ~ 52 중량%, 모래 19.2 ~ 23 중량%, 물 28 ~ 32 중량% 및 혼화제 0.8 ~ 1 중량%로 이루어지는 것을 특징으로 하는 건축용 3D 프린터를 위한 몰탈 조성물을 제공한다.In order to achieve the above object, the present invention provides a mortar composition for a 3D printer for construction, consisting of 44 to 52% by weight of cement, 19.2 to 23% by weight of sand, 28 to 32% by weight of water and 0.8 to 1% by weight of admixture. It provides a mortar composition for a 3D printer for construction, characterized in that.
본 발명에서 혼화제는, 유리섬유와, 급결제와 폴리메쉬 및 감수제로 이루어지고, 상기 혼화제는 전체 혼화제 중량을 기준으로, 유리섬유 4.5 ~ 6.7 중량%, 급결제 53.3 ~ 54.5 중량%, 폴리메쉬 13.3 ~ 13.7 중량% 및 감수제 26.7 ~ 27.3 중량%로 이루어지는 것을 특징으로 한다.In the present invention, the admixture is composed of glass fiber, an accelerator, a polymesh, and a water reducing agent, and the admixture contains 4.5 to 6.7% by weight of glass fiber, 53.3 to 54.5% by weight of accelerator, and 13.3 polymesh based on the total weight of the admixture. ~ 13.7% by weight and 26.7 ~ 27.3% by weight of the water reducing agent.
본 발명에서 유리섬유는 12㎜로 이루어지는 것을 특징으로 한다.In the present invention, the glass fiber is characterized in that it consists of 12 mm.
본 발명에서 혼화제는, PVA 분말과, 급결제와 폴리메쉬 및 감수제로 이루어지고, 상기 혼화제는 전체 혼화제 중량을 기준으로, PVA 분말 4.5 ~ 6.7 중량%, 급결제 53.3 ~ 54.5 중량%, 폴리메쉬 13.3 ~ 13.7 중량% 및 감수제 26.7 ~ 27.3 중량%로 이루어지는 것을 특징으로 한다.In the present invention, the admixture is composed of PVA powder, an accelerator, a polymesh, and a water reducing agent, and the admixture contains 4.5 to 6.7% by weight of PVA powder, 53.3 to 54.5% by weight of an admixture, and 13.3 polymesh based on the total weight of the admixture. ~ 13.7% by weight and 26.7 ~ 27.3% by weight of the water reducing agent.
본 발명에서 몰탈은, 10회 슬럼프 콘 테스트 평균값이 15 ~ 16 ㎝인 것을 특징으로 한다.In the present invention, the mortar is characterized in that the average value of the 10-time slump cone test is 15 to 16 cm.
본 발명에서 몰탈은, 건축용 3D 프린터의 노즐로 공급하는 믹서기에서 20℃로 유지되는 것을 특징으로 한다.In the present invention, the mortar is characterized in that it is maintained at 20 ° C. in the mixer supplied to the nozzle of the architectural 3D printer.
본 발명은 몰탈이 쉽게 퍼지는 것이 방지될 수 있기 때문에 건축용 3D 프린터에 사용이 가능하다는 장점을 가진다.The present invention has the advantage that it can be used in a 3D printer for construction because the mortar can be easily prevented from spreading.
또한, 본 발명은 건축용 3D 프린팅시 강도를 유지함으로써 몰탈의 퍼짐없이 작업이 가능하기 때문에 프린팅 속도를 증가시킬 수 있다는 장점을 가진다.In addition, the present invention has the advantage of increasing the printing speed because it is possible to work without spreading the mortar by maintaining strength during 3D printing for construction.
또한, 본 발명은 유리섬유 등이 들어가기 때문에 건축용 3D 프린터로 프린팅시 크랙이나 뒤틀림을 방지할 수 있다는 장점을 가진다.In addition, the present invention has the advantage that cracks or distortion can be prevented when printing with a 3D printer for construction because glass fibers and the like are included.
또한, 본 발명은 슬럼프 값이 일정한 범위 이상을 가지기 때문에 건축용 3D 프린터로 프린팅시 충분한 인장강도가 유지될 수 있는 장점이 있다.In addition, the present invention has the advantage that sufficient tensile strength can be maintained when printing with a 3D printer for construction because the slump value has more than a certain range.
도 1은 본 발명에 따른 콘크리트 배합물 제조공정도.1 is a process diagram for manufacturing a concrete mixture according to the present invention.
본 발명의 추가적인 목적들, 특징들 및 장점들은 다음의 상세한 설명 및 첨부도면으로부터 보다 명료하게 이해될 수 있다.Additional objects, features and advantages of the present invention may be more clearly understood from the following detailed description and accompanying drawings.
본 발명의 상세한 설명에 앞서, 본 발명은 다양한 변경을 도모할 수 있고, 여러 가지 실시 예를 가질 수 있는바, 아래에서 설명되고 도면에 도시된 예시들은 본 발명을 특정한 실시 형태에 대해 한정하려는 것이 아니며, 본 발명의 사상 및 기술 범위에 포함되는 모든 변경, 균등물 내지 대체물을 포함하는 것으로 이해되어야 한다.Prior to the detailed description of the present invention, the present invention may make various changes and may have various embodiments, and the examples described below and shown in the drawings are not intended to limit the present invention to specific embodiments. No, it should be understood to include all changes, equivalents or substitutes included in the spirit and scope of the present invention.
본 발명에 따른 건축용 3D 프린터를 위한 몰탈 조성물은, 시멘트 44 ~ 52 중량%, 모래 19.2 ~ 23 중량%, 물 28 ~ 32 중량% 및 혼화제 0.8 ~ 1 중량%의 비로 이루어진다. 몰탈은 시멘트와 물 및 모래를 혼합하여 조성되는 조성물을 말한다. 시멘트와 물 및 모래만을 혼합하여 몰탈을 조성하는 경우, 시멘트의 경화시간이 더디기 때문에 몰탈에 혼화제가 들어가지 않는 경우에는 3D 프린터에 사용하기는 곤란하다. 그에 따라 혼화제가 일정비율로 투입된다.The mortar composition for a 3D printer for construction according to the present invention consists of 44 to 52% by weight of cement, 19.2 to 23% by weight of sand, 28 to 32% by weight of water, and 0.8 to 1% by weight of admixture. Mortar refers to a composition formed by mixing cement with water and sand. When a mortar is formed by mixing only cement, water, and sand, it is difficult to use it in a 3D printer without an admixture in the mortar because the hardening time of the cement is slow. Accordingly, the admixture is added in a certain ratio.
혼화제는, 유리섬유와, 급결제와 폴리메쉬 및 감수제로 이루어진다. 혼화제는 전체 혼화제 중량을 기준으로, 유리섬유 4.5 ~ 6.7 중량%, 급결제 53.3 ~ 54.5 중량%, 폴리메쉬 13.3 ~ 13.7 중량% 및 감수제 26.7 ~ 27.3 중량%로 이루어진다.The admixture consists of glass fibers, a quick-settling agent, a poly mesh, and a water reducing agent. The admixture is composed of 4.5 to 6.7 wt% of glass fiber, 53.3 to 54.5 wt% of quick setting agent, 13.3 to 13.7 wt% of poly mesh and 26.7 to 27.3 wt% of water reducing agent based on the total weight of the admixture.
혼화제의 유리섬유는 일정길이로 투입되는데 길이는 12㎜정도로 투입된다. 유리섬유는 몰탈내에서 유리섬유가 서로 엉키는 성질을 이용한 것으로서 유리섬유와 몰탈이 서로 엉키게 되고, 그에 따라 몰탈의 강도를 증가시키는 방법이 될 수 있다. 유리섬유에 의해 몰탈은 건조 후 크랙이나 뒤틀림이 방지되는 효과를 가진다.The glass fibers of the admixture are injected at a certain length, and the length is injected at about 12 mm. Glass fiber uses the property that glass fibers are entangled in mortar, and glass fibers and mortar are entangled with each other, thereby increasing the strength of the mortar. The mortar has an effect of preventing cracks or distortion after drying by the glass fiber.
혼화제의 급결제는, 몰탈이 빨리 건조될 수 있도록 한다. 급결제는 알루미네이트계 액상급결제, 알칼리프리계 액상급결제 등이 있다. 알루미네이트(Alkali Sodium Aluminate)계 액상급결제는 Na2O와 Al2O3가 약 1.3 ~ 1.6 몰비로 구성된 pH 11±1의 담황색액체이며, 공기와 접촉시 표면에 탄산나트륨을 생성하며 피막을 형성한다. 장기간 노출시에는 탄산나트륨이 지속적으로 석출되어 표면에 흰색 분말이 생성된다. 알칼리프리(Aluminium Phosphate)계 액상급결제는, pH값이 11 ~ 14에 달하는 기존 급결제의 알카리와 골재간의 반응에 의한 콘크리트내부의 팽창으로 인한 강도 저하와 인체에 대한 유해성, 친환경적이지 못한점을 해결하고자 제조된 알카리성 이온 즉, Na2O + K2O의 함량이 1% 미만인 에트링자이트(ettringite)의 생성을 촉진하여 급결력을 발생시키는 연백색 또는 황색의 액상이며, 종류로는 액상형 시멘트광물형이 있다. 액상형의 주요원료는 황산알미늄(Al2(SO4)3)이다. 그리고 시멘트광물형의 주요성분은 산화칼슘(CaO)과 산화알미늄(Al2O3)으로 pH는 높지만 알칼리계는 아니다. 바람직하게 본 발명에 사용되는 급결제는 알칼리프리계 액상급결제가 사용된다. 알칼리프리계 액상급결제를 이용함으로써 종래의 알칼리성을 띄는 기존의 급결제의 문제점인 강도저하가 발생할 수 있기 때문에 알칼리프리계 액상급결제가 사용된다. 급결제는 몰탈의 조기 양생과 방수가 가능하게 한다.The rapid setting of the admixture allows the mortar to dry quickly. There are an aluminate-based liquid quick-setting agent and an alkali-free liquid quick-setting agent. Aluminate (Alkali Sodium Aluminate)-based liquid quick-drying agent is a pale yellow liquid with a pH of 11±1 composed of Na 2 O and Al 2 O 3 in a molar ratio of about 1.3 to 1.6, and forms a film by generating sodium carbonate on the surface when in contact with air. do. When exposed for a long time, sodium carbonate is continuously precipitated and a white powder is formed on the surface. Alkali-free (Aluminium Phosphate)-based liquid quick-setting agent has a pH value of 11 ~ 14, and the alkali of the existing quick-setting agent reaches 14. It is a light white or yellow liquid phase that generates quick-setting force by promoting the production of ettringite, which is manufactured to solve the alkaline ion, that is, Na 2 O + K 2 O content is less than 1%. There is a cementitious type. The main raw material of the liquid type is aluminum sulfate (Al 2 (SO 4 ) 3 ). And the main components of the cement mineral type are calcium oxide (CaO) and aluminum oxide (Al 2 O 3 ), which have a high pH but are not alkaline. Preferably, an alkali-free liquid quick-setting agent is used as the quick-setting agent used in the present invention. By using an alkali-free liquid quick-setter, an alkali-free liquid quick-setter is used because a decrease in strength, which is a problem of conventional quick-setters that are alkaline, may occur. Rapid setting enables early curing and waterproofing of mortar.
혼화제의 폴리메쉬는, 폴리에스터 또는 플라스틱으로 된 폴리메쉬로서, 폴리메쉬는 섬유로 엮어져 형성되는 것이고, 메쉬 홀을 통해서 몰탈이 통과할 수 있기 때문에 몰탈의 인장강도를 크게 하는 장점을 가진다. 폴리메쉬는 길이방향으로 일정길이를 가지도록 성형되어 몰탈에 투입된다.The polymesh of the admixture is a polymesh made of polyester or plastic, and the polymesh is formed by being woven with fibers, and has the advantage of increasing the tensile strength of the mortar because the mortar can pass through the mesh holes. The polymesh is molded to have a certain length in the longitudinal direction and put into the mortar.
혼화제의 감수제는 몰탈의 작업성 향상을 위해 넣는 것으로, 추가로 물을 넣으면 몰탈의 경화 특성에 해가 될 수 있기 때문에 추가적으로 물을 넣지 않기 위해 추가하는 혼화제이다. 감수제는 시멘트 입자의 이동성을 증가시킴으로써 작업성을 확보한다. 콘크리트 슬럼프 테스트를 해보면 감수제를 넣은 굳지 않은 콘크리트는 슬럼프가 증가한다. 감수제의 종류는 감수 범위에 따라 나뉘며, 고범위 감수제는 유동화제 또는 고성능감수제라고 부른다. 감수제의 사용으로 간접적인 강도 향상을 노릴 수 있으며, 배합수의 양을 줄이고 물과 시멘트의 비를 줄임으로써 강도 향상에 도움이 될 수 있다. 또한, 감수제의 사용은 콘크리트나 몰탈의 배합 비용 절감의 주된 원인인 시멘트 사용량 감소에 기여할 수 있다.The water reducing agent of the admixture is added to improve the workability of the mortar, and it is an admixture added to avoid adding additional water because adding water may harm the hardening properties of the mortar. The water reducing agent secures workability by increasing the mobility of cement particles. In the concrete slump test, the slump of unhardened concrete with water reducing agent increases. The type of water reducing agent is divided according to the water reducing range, and the high range water reducing agent is called a fluidizing agent or a high performance water reducing agent. Strength can be improved indirectly by using a water reducing agent, and strength can be improved by reducing the amount of mixing water and reducing the ratio of water to cement. In addition, the use of a water reducing agent can contribute to reducing the amount of cement used, which is the main cause of reducing the mixing cost of concrete or mortar.
또한, 혼화제는, PVA 분말과, 급결제와 폴리메쉬 및 감수제로 이루어지고, 상기 혼화제는 전체 혼화제 중량을 기준으로, PVA 분말 4.5 ~ 6.7 중량%, 급결제 53.3 ~ 54.5 중량%, 폴리메쉬 13.3 ~ 13.7 중량% 및 감수제 26.7 ~ 27.3 중량%의 비로 이루어질 수도 있다.In addition, the admixture consists of PVA powder, an accelerator, a polymesh, and a water reducing agent, and the admixture contains 4.5 to 6.7% by weight of PVA powder, 53.3 to 54.5% by weight of an admixture, and 13.3 to 13.3 to 54.5% by weight of polymesh based on the total weight of the admixture. 13.7% by weight and 26.7 to 27.3% by weight of the water reducing agent.
혼화제는 PVA(POLY VINYL ALCOHOL) 분말을 사용할 수 있다. PVA 분말은 친수성을 가진 것으로서 물과 결합하여 접착제로서의 역할을 수행한다. 그에 따라 몰탈에 혼합되는 경우 몰탈이 경화되면서 함께 접착되기 때문에 크랙이나 뒤틀림방지 등이 가능해진다. 나머지 혼화제의 성분은 앞서 설명하였으므로 상세한 설명은 생략하기로 한다.As the admixture, PVA (POLY VINYL ALCOHOL) powder may be used. PVA powder is hydrophilic and functions as an adhesive by combining with water. Accordingly, when mixed with mortar, it is possible to prevent cracking or distortion because the mortar is hardened and bonded together. Since the components of the other admixture have been described above, a detailed description thereof will be omitted.
다음으로 건축용 3D 프린터를 위한 몰탈 조성물의 제조과정을 도 1의 공정도를 참조하여 설명하기로 한다.Next, the manufacturing process of the mortar composition for the 3D printer for construction will be described with reference to the process diagram of FIG.
1. 몰탈 제조과정1. Mortar manufacturing process
물과 시멘트 및 모래 일정량을 준비한다. 믹서에 물과 시멘트 및 모래를 투입한 후 교반장치를 이용하여 일정하게 교반을 하여 몰탈을 형성한다. 몰탈의 생성과 교반은 15 ~ 25℃에서 이루어짐이 바람직하다.Prepare a certain amount of water, cement and sand. After putting water, cement and sand in a mixer, they are constantly stirred using an agitator to form mortar. Creation and stirring of mortar is preferably performed at 15 to 25 ° C.
2. 혼화제 투입과정2. Admixture input process
몰탈이 믹서를 통해서 제조가 되면, 몰탈에 일부 혼화제를 투입한다. 몰탈에 투입되는 혼화제는 유리섬유나 PVA 분말, 폴리메쉬 및 감수제이다. 혼화제는 유리섬유 또는 PVA 분말, 폴리메쉬, 및 감수제를 준비하여 투입한다. 혼화제 중 급결제를 제외한 혼화제를 믹서에 투입하여 함께 교반한다.When the mortar is prepared through a mixer, some admixtures are added to the mortar. The admixture added to the mortar is glass fiber or PVA powder, poly mesh, and water reducing agent. The admixture is prepared by preparing glass fiber or PVA powder, polymesh, and water reducing agent. Among the admixtures, the admixtures excluding the quick-settling agent are put into a mixer and stirred together.
3. 건축용 3D 프린터를 이용한 건축물 성형과정3. Building molding process using a 3D printer for construction
혼화제가 포함된 몰탈은 공급펌프를 통해서 건축용 3D 프린터로 공급된다. 건축용 3D 프린터의 노즐을 통해서 몰탈이 공급되고 노즐에 급결제가 함께 투입된다. 노즐은 노즐을 통해서 몰탈이 공급되도록 노즐의 상부측에 마련되는 믹서를 통해서 공급되며, 믹서는 바람직하게는 20℃ 정도의 온도를 유지하면서 몰탈이 공급된다. 급결제는 믹서로 몰탈과 함께 투입되고, 노즐을 통해서 건축물을 성형하게 된다.The mortar containing the admixture is supplied to the 3D printer for construction through a supply pump. Mortar is supplied through the nozzle of the construction 3D printer, and a quick-setting agent is injected into the nozzle. The nozzle is supplied through a mixer provided on the upper side of the nozzle so that mortar is supplied through the nozzle, and the mixer is preferably supplied with mortar while maintaining a temperature of about 20 ° C. The quick-setting agent is put into the mixer together with the mortar, and the building is molded through the nozzle.
[실시예 1][Example 1]
본 실시예는 시멘트 120kg, 모래 50kg, 물 60리터와 혼화제 2.2kg을 준비하였다. 먼저 시멘트 모래 및 물을 믹서기에서 믹싱하여 몰탈을 제조하였다. 제조된 몰탈에 급결제를 제외한 나머지 혼화제를 투입하고 믹싱하였다. 믹싱된 몰탈을 3D 프린터의 노즐에 공급하면서 노즐에 급결제도 함께 투입하였다. 3D 프린터의 노즐로 몰탈을 공급하는 믹서의 온도는 20℃를 유지하였다. 그러한 상태로 3D 프린터를 통하여 공급되는 몰탈에 대하여 콘크리트 콘 테스트를 수행하였다.In this example, 120 kg of cement, 50 kg of sand, 60 liters of water and 2.2 kg of admixture were prepared. First, mortar was prepared by mixing cement sand and water in a mixer. The remaining admixtures except for the quick-setting agent were added to the prepared mortar and mixed. While supplying the mixed mortar to the nozzle of the 3D printer, an accelerator was also added to the nozzle. The temperature of the mixer supplying the mortar to the nozzle of the 3D printer was maintained at 20°C. In such a state, a concrete cone test was performed on the mortar supplied through the 3D printer.
[실시예 2][Example 2]
본 실시예는 시멘트 120kg, 모래 60kg, 물 70리터와 혼화제 2.25kg을 준비하였다. 먼저 시멘트 모래 및 물을 믹서기에서 믹싱하여 몰탈을 제조하였다. 제조된 몰탈에 급결제를 제외한 나머지 혼화제를 투입하고 믹싱하였다. 믹싱된 몰탈을 3D 프린터의 노즐에 공급하면서 노즐에 급결제도 함께 투입하였다. 3D 프린터의 노즐로 몰탈을 공급하는 믹서의 온도는 20℃를 유지하였다. 그러한 상태로 3D 프린터를 통하여 공급되는 몰탈에 대하여 콘크리트 콘 테스트를 수행하였다.In this example, 120 kg of cement, 60 kg of sand, 70 liters of water and 2.25 kg of admixture were prepared. First, mortar was prepared by mixing cement sand and water in a mixer. The remaining admixtures except for the quick-setting agent were added to the prepared mortar and mixed. While supplying the mixed mortar to the nozzle of the 3D printer, an accelerator was also added to the nozzle. The temperature of the mixer supplying the mortar to the nozzle of the 3D printer was maintained at 20°C. In such a state, a concrete cone test was performed on the mortar supplied through the 3D printer.
[실시예 3][Example 3]
본 실시예는 시멘트 120kg, 모래 60kg, 물 80리터와 혼화제 2.25kg을 준비하였다. 먼저 시멘트 모래 및 물을 믹서기에서 믹싱하여 몰탈을 제조하였다. 제조된 몰탈에 급결제를 제외한 나머지 혼화제를 투입하고 믹싱하였다. 믹싱된 몰탈을 3D 프린터의 노즐에 공급하면서 노즐에 급결제도 함께 투입하였다. 3D 프린터의 노즐로 몰탈을 공급하는 믹서의 온도는 20℃를 유지하였다. 그러한 상태로 3D 프린터를 통하여 공급되는 몰탈에 대하여 콘크리트 콘 테스트를 수행하였다.In this example, 120 kg of cement, 60 kg of sand, 80 liters of water and 2.25 kg of admixture were prepared. First, mortar was prepared by mixing cement sand and water in a mixer. The remaining admixtures except for the quick-setting agent were added to the prepared mortar and mixed. While supplying the mixed mortar to the nozzle of the 3D printer, an accelerator was also added to the nozzle. The temperature of the mixer supplying the mortar to the nozzle of the 3D printer was maintained at 20°C. In such a state, a concrete cone test was performed on the mortar supplied through the 3D printer.
상기 콘크리트 콘 테스트를 시행한 결과 10회 테스트에서 슬럼프 값은 15 ~ 16으로 나타났다. 슬럼프 값이 높다는 의미는 응집력이 크다는 것을 의미하는 것이고, 몰탈이 서로 이탈되어서 내려앉지 않았다는 것을 의미하므로 건축용 3D 프린터에 충분히 사용가능하다는 것을 의미하고 있다.As a result of the concrete cone test, the slump value was 15 to 16 in 10 tests. A high slump value means that the cohesive force is high, and it means that the mortars are separated from each other and do not sink, which means that they can be used sufficiently for construction 3D printers.
본 발명에서 살펴본 바와 같이, 본 발명에 따른 몰탈 조성물은 건축용 3D 프린터에 적용하는 경우 일정시간 건조 후 강도가 강하고, 또 급결제를 통해서 양생속도가 빠르기 때문에 건축용으로 사용되는데 큰 무리가 없음을 알 수 있다.As reviewed in the present invention, when applied to a 3D printer for construction, the mortar composition according to the present invention has strong strength after drying for a certain period of time and a fast curing speed through rapid setting, so it can be seen that there is no great difficulty in using it for construction. there is.
본 명세서에서 설명되는 실시 예와 첨부된 도면은 본 발명에 포함되는 기술적 사상의 일부를 예시적으로 설명하는 것에 불과하다. 따라서, 본 명세서에 개시된 실시 예는 본 발명의 기술적 사상을 한정하기 위한 것이 아니라 설명하기 위한 것이므로, 이러한 실시 예에 의하여 본 발명의 기술 사상의 범위가 한정되는 것은 아님은 자명하다. 본 발명의 명세서 및 도면에 포함된 기술적 사상의 범위 내에서 당업자가 용이하게 유추할 수 있는 변형 예와 구체적인 실시 예는 모두 본 발명의 권리범위에 포함되는 것으로 해석되어야 할 것이다.The embodiments described in this specification and the accompanying drawings merely illustrate some of the technical ideas included in the present invention by way of example. Therefore, since the embodiments disclosed in this specification are not intended to limit the technical idea of the present invention but to explain it, it is obvious that the scope of the technical idea of the present invention is not limited by these embodiments. All modified examples and specific examples that can be easily inferred by those skilled in the art within the scope of the technical idea included in the specification and drawings of the present invention should be construed as being included in the scope of the present invention.
S10 ~ S12 : 공정순서번호S10 ~ S12: process sequence number
Claims (6)
상기 몰탈 조성물은, 시멘트 44 ~ 52 중량%, 모래 19.2 ~ 23 중량%, 물 28 ~ 32 중량% 및 혼화제 0.8 ~ 1 중량%로 이루어지되;
상기 혼화제는
12㎜의 섬유길이를 갖는 유리섬유와, 알칼리프리계 액상급결제와, 폴리에스터 또는 플라스틱 재질의 섬유로 엮여진 일정길이의 폴리메쉬와, 감수제로 구성되며,
혼화제의 전체중량을 기준으로, 유리섬유 4.5 ~ 6.7 중량%, 액상급결제 53.3 ~ 54.5 중량%, 폴리메쉬 13.3 ~ 13.7 중량%, 감수제 26.7 ~ 27.3 중량%로 이루어져,
15 ~ 25℃로 유지되는 믹서기에서 몰탈, 유리섬유, 폴리메쉬, 감수제가 교반되며, 유리섬유와 엉켜진 몰탈을 3D프린터의 노즐에 공급하면서 액상급결제를 몰탈에 투입하여 슬럼프 값이 15 ~ 16 cm인것을 특징으로 하는 건축용 3D 프린터를 위한 몰탈 조성물.
In the mortar composition for a 3D printer for construction,
The mortar composition is composed of 44 to 52% by weight of cement, 19.2 to 23% by weight of sand, 28 to 32% by weight of water, and 0.8 to 1% by weight of an admixture;
The admixture
It is composed of glass fiber having a fiber length of 12 mm, an alkali-free liquid quick-setting agent, a poly mesh of a certain length woven with polyester or plastic fibers, and a water reducing agent.
Based on the total weight of the admixture, it consists of 4.5 to 6.7% by weight of glass fiber, 53.3 to 54.5% by weight of liquid quick-settling agent, 13.3 to 13.7% by weight of poly mesh, and 26.7 to 27.3% by weight of water reducing agent,
In a mixer maintained at 15 ~ 25 ℃, mortar, glass fiber, polymesh, and water reducing agent are stirred, and while supplying the glass fiber and entangled mortar to the nozzle of the 3D printer, the liquid quick-settling agent is injected into the mortar so that the slump value is 15 ~ 16 Mortar composition for a 3D printer for construction, characterized in that cm.
상기 몰탈 조성물은, 시멘트 44 ~ 52 중량%, 모래 19.2 ~ 23 중량%, 물 28 ~ 32 중량% 및 혼화제 0.8 ~ 1 중량%로 이루어지되;
상기 혼화제는
PVA(POLY VINYL ALCOHOL) 분말, 알칼리프리계 액상급결제와, 폴리에스터 또는 플라스틱 재질의 섬유로 엮여진 일정길이의 폴리메쉬와, 감수제로 구성되며,
혼화제의 전체중량을 기준으로, PVA 분말 4.5 ~ 6.7 중량%, 액상급결제 53.3 ~ 54.5 중량%, 폴리메쉬 13.3 ~ 13.7 중량%, 감수제 26.7 ~ 27.3 중량%로 이루어져,
15 ~ 25℃로 유지되는 믹서기에서 몰탈, PVA 분말, 폴리메쉬, 감수제가 교반되며, PVA 분말과 접착된 몰탈을 3D프린터의 노즐에 공급하면서 액상급결제를 몰탈에 투입하여 슬럼프 값이 15 ~ 16 cm인 것을 특징으로 하는 건축용 3D 프린터를 위한 몰탈 조성물.In the mortar composition for a 3D printer for construction,
The mortar composition is composed of 44 to 52% by weight of cement, 19.2 to 23% by weight of sand, 28 to 32% by weight of water, and 0.8 to 1% by weight of an admixture;
The admixture
It is composed of PVA (POLY VINYL ALCOHOL) powder, an alkali-free liquid quick-drying agent, a certain length of poly mesh woven with polyester or plastic fibers, and a water reducing agent.
Based on the total weight of the admixture, it consists of 4.5 to 6.7% by weight of PVA powder, 53.3 to 54.5% by weight of liquid quick-settling agent, 13.3 to 13.7% by weight of polymesh, and 26.7 to 27.3% by weight of water reducing agent,
Mortar, PVA powder, polymesh, and water reducing agent are stirred in a mixer maintained at 15 ~ 25 ℃, and liquid quick-settling agent is injected into the mortar while supplying the mortar bonded with the PVA powder to the nozzle of the 3D printer, so that the slump value is 15 ~ 16 Mortar composition for a 3D printer for construction, characterized in that cm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020200145667A KR102533370B1 (en) | 2020-11-04 | 2020-11-04 | Mortar compound for achitectural 3d-printer |
| KR1020230059548A KR20230087417A (en) | 2020-11-04 | 2023-05-09 | Mortar compound for achitectural 3d-printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020200145667A KR102533370B1 (en) | 2020-11-04 | 2020-11-04 | Mortar compound for achitectural 3d-printer |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020230059548A Division KR20230087417A (en) | 2020-11-04 | 2023-05-09 | Mortar compound for achitectural 3d-printer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20220060107A KR20220060107A (en) | 2022-05-11 |
| KR102533370B1 true KR102533370B1 (en) | 2023-05-16 |
Family
ID=81606877
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020200145667A KR102533370B1 (en) | 2020-11-04 | 2020-11-04 | Mortar compound for achitectural 3d-printer |
| KR1020230059548A KR20230087417A (en) | 2020-11-04 | 2023-05-09 | Mortar compound for achitectural 3d-printer |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020230059548A KR20230087417A (en) | 2020-11-04 | 2023-05-09 | Mortar compound for achitectural 3d-printer |
Country Status (1)
| Country | Link |
|---|---|
| KR (2) | KR102533370B1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101620075B1 (en) * | 2015-03-27 | 2016-05-13 | 동산콘크리트산업(주) | Mortar for 3D Printing, Concrete and Manufacturing Method of the Concrete using it |
| KR102031736B1 (en) * | 2018-11-20 | 2019-10-14 | (재)한국건설생활환경시험연구원 | Ceramic composites used for 3d printing for manufacturing of building exterior materials and performance improvement method of building exterior materials printed using this |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100559150B1 (en) | 2004-09-25 | 2006-03-10 | 백종명 | Composition with nano level inorganic polymer for repairing crevis on concrete structure |
| KR100966322B1 (en) | 2008-06-17 | 2010-06-28 | ㈜익성텍 | Panel manufacturing composition and its process and its panel product with fireproof resistance |
| KR101620074B1 (en) | 2015-03-27 | 2016-05-13 | 동산콘크리트산업(주) | Concrete composition for 3D Printing, Concrete and Manufacturing Method of the Concrete using it |
-
2020
- 2020-11-04 KR KR1020200145667A patent/KR102533370B1/en active IP Right Grant
-
2023
- 2023-05-09 KR KR1020230059548A patent/KR20230087417A/en not_active Application Discontinuation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101620075B1 (en) * | 2015-03-27 | 2016-05-13 | 동산콘크리트산업(주) | Mortar for 3D Printing, Concrete and Manufacturing Method of the Concrete using it |
| KR102031736B1 (en) * | 2018-11-20 | 2019-10-14 | (재)한국건설생활환경시험연구원 | Ceramic composites used for 3d printing for manufacturing of building exterior materials and performance improvement method of building exterior materials printed using this |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20220060107A (en) | 2022-05-11 |
| KR20230087417A (en) | 2023-06-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7041167B2 (en) | Low density accelerant and strength enhancing additive for cementitious products and methods of using same | |
| KR101057132B1 (en) | Eco organic inorganic hybrid repair mortar composition and repair method of construction using the same | |
| JP2008513340A (en) | Flexible hydraulic composition | |
| US20030084826A1 (en) | Cementitious material | |
| CN110423074B (en) | High-thixotropy quick-hardening self-compacting concrete for construction of CRTS III plate type track skylight and preparation method | |
| US20050103234A1 (en) | Cementitious composition | |
| EP3442928A1 (en) | Aerated concrete moulded body comprising an overlayer and/or underlayer | |
| US20230150877A1 (en) | Dry cementitious material mixture for 3d-printing | |
| KR101380171B1 (en) | High durable cement for semi-rigid pavement having chloride resistant cement and Semi-rigid pavement method using filling the same in asphalt with vibrating | |
| KR102533370B1 (en) | Mortar compound for achitectural 3d-printer | |
| RU2291846C1 (en) | Fibro-cement compound for production of composite material | |
| KR20220156749A (en) | Surface protection material composition for neutralizing concrete structure and preventing salt damage and surface repair method of concrete structure using the same | |
| CN114436604A (en) | Pre-activated clay-fluoroaluminate cement-based grouting material and preparation method thereof | |
| KR20130108229A (en) | High strength composition for repairing and reinforcing concrete structure | |
| GB1593121A (en) | Method of producing building elements | |
| US11873251B1 (en) | Concrete composition for use in construction and methods of applying the same | |
| KR102547030B1 (en) | High Strength Concrete Composition for Polygons Shaped Precast Concrete | |
| CN112723815B (en) | Full-industrial solid waste high-strength artificial marble and preparation method thereof | |
| RU2531981C1 (en) | Production of self-compacting super strong reactive powder fibro-mortar with high fluidity and method for production of concrete articles from said mix | |
| JP2000263541A (en) | Manufacture of cement cured body | |
| CN115582903A (en) | Preparation method of cement flower brick | |
| JP2530637B2 (en) | Method for producing cement molded body | |
| JPS62179903A (en) | Manufacture of high-strength glass fiber reinforced cement cured body | |
| JP4220781B6 (en) | Low density calcium silicate hydrate strength accelerator additive for cementitious products | |
| KR101347550B1 (en) | High strength composition for repairing and reinforcing concrete structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| E902 | Notification of reason for refusal | ||
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant |