• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a process for producing concrete. In the process, cement, water and air-porous preparations are mixed in stone material containing quartz in order to form concrete mass. Then a plasticizing additive is added to the mixed concrete mass and mixed again and finally the silane is added to the concrete mass containing a plasticizing additive and mixed again.
    公开号:FI20195441A1
    申请号:FI20195441
    申请日:2019-05-27
    公开日:2020-11-28
    发明作者:Raija Korhonen；Sirkku Saarelainen；Seppo Saarelainen
    申请人:Invest Saarelainen Oy；
    IPC主号:
    专利说明:

    [0001] The invention relates to waterproof and frost-resistant concrete and to a method for producing the same.
    [0002] One problem with previously known waterproof and frost-resistant concretes has been that it has been difficult to produce concrete of uniform quality and properties.
    [0003] In known solutions for waterproofing, the water tightness is mainly based on coating the concrete layer with a waterproofing layer, which requires an additional work step. In practice, such a coated waterproofing layer has also not remained tight long enough, and even a small crack or hole in the coating will ruin the waterproofing of the concrete. Brief description of the invention
    [0004] It is therefore an object of the invention to develop a method so that the above-mentioned problems can be solved. The object of the invention is achieved by a method which is characterized by what is stated in the independent claims. Preferred embodiments of the invention are the subject of dependent claims. Brief description of the figures
    [0005] The invention will now be described in more detail in connection with preferred embodiments, with reference to the accompanying drawing, in which:
    [0006] Figure 1 shows an embodiment of a method of manufacturing concrete;
    [0007] Figure 2 shows another embodiment of a method of manufacturing concrete; Fig. 3 shows a third embodiment of a concrete manufacturing method, Fig. 4 shows a fourth embodiment of a concrete manufacturing method, and Fig. 5 shows an internal structure of a waterproof and frost-resistant concrete. field diagram. Detailed description of the invention> A mixture of cement and water is called a cement adhesive. With the help of cement glue, the natural stone granules can be glued together and the resulting concrete mass can be used to cast pieces of the desired shape. Once the cement adhesive has hardened, it is called cement stone. Hardened concrete consists of cement stone and natural stone granules. Cementstone has pores of different sizes. These are: 1. sealing pores, 2. protective pores, 3. capillary pores and 4. gel pores.
    [0012] Waterproof and frost-resistant concrete can be prepared by mixing cement and water in a quartz-containing aggregate to form a concrete mass and adding a blowing agent and mixing, adding a plasticizer and mixing, and adding a silane-containing additive and mixing. In practical experiments, it has been found that an excellent result is obtained when the concrete mass is otherwise prepared and only in the last stage is silane added to the otherwise completed concrete mass.
    [0013] The admixtures can be added in several different steps, for example in the step of preparing the concrete mass, to the finished concrete mass or to the finished concrete. Figure 1 shows an embodiment of a method of manufacturing waterproof and frost-resistant concrete, in which step A a quartz-containing aggregate, cement, a water blowing agent and a plasticizer are mixed. By mixing, a concrete mass is obtained.
    [0014] In step C, silane is added to the concrete mass, after which the concrete mass is mixed. In practice, in this example, the silane is added to the concrete mass towards the end of its manufacturing step.
    [0015] The method of Figure 1 provides a concrete mass from which the structure is thoroughly frost-resistant and water-resistant. This is a very advantageous solution, because if, for example, a hole is drilled in the structure later, this is also not water-resistant in the concrete mass at the bottom of the hole and on the inner walls. This is not the case in known solutions where the water resistance is based on coating with a waterproofing layer, because if a hole is drilled through the coating layer, its bottom or inner walls are not waterproof. > In another embodiment of Figure 2, cement, water and a blowing agent are mixed with the quartz-containing aggregate O to form a concrete mass A1. N A plasticizer is then added to the concrete mass and mixed B. Finally, an admixture comprising silane is added to the concrete mass containing the porosifier and plasticizer and mixed with C. E In step A3, the blowing agent 3 is mixed with water and then the water containing the blowing agent is mixed with the mixture of aggregate 2 and cement. The plasticizer is then added to the concrete mass N 35 and mixed B, and finally silane is added to the concrete mass and mixed C.
    [0018] In the third embodiment of Figure 4, in step A4, cement and water are mixed with the aggregate comprising quartz. In step A5, a porator is added and mixed. In step B, a plasticizer is added and mixed. Finally, in step C, silane is added and mixed.
    [0019] The blowing agent and the silane-containing additive are important ingredients for the watertightness and frost resistance of concrete. The pores reduce the surface tension of the concrete water and form the desired amount of protective pores in the concrete, leaving room for the frozen water to expand and thus improve the frost resistance of the concrete.
    [0020] The silane to be added to the concrete mass as an additive clogs the capillary pores and gel pores of the cement stone, so that water cannot be absorbed through them into the concrete. The silanes react with the cement components to form small bristle nanomolecular hairs evenly throughout the concrete mass. These molecular hairs have a very large surface area, which changes the angle of incidence of the water so that water cannot penetrate the concrete.
    [0021] When trying to get through the hardened concrete, water does not get through a single natural stone granule, but finds its way through a cement stone with different pores. When trying to get through the hardened concrete, the water also tries to find a passage at the interface between the cement stone and the natural stone. However, such pathways are not found because the cement adhesive seals the interface between the quartz-containing aggregate granule and the cement rock by forming a separate phase at the interface when the cement adhesive is absorbed into the aggregate pores 0.3-0.5% by weight of the aggregate and the silane clogs both capillary and gel pores. The phase formed at the interface between the aggregate and the cement stone is illustrated in Figure 5, which shows a schematic diagram of the internal structure of waterproof and frost-resistant concrete. Figure 5 shows by way of example a quartz-containing stone granule 1, a silane-containing cement stone 2, and a> crude surface phase formed between the stone granule 1 and the cement stone 2. D The waterproof interface phase arises from the chemical-physical bond between the silane and the quartz mineral. The waterproof interface phase is formed when the carbon atom (C) of the silane is covalently bonded directly to the silicon atom (Si) of the quartz mineral. However, N 30 Silane does not support the protective pores formed by the aerator, which preserves the frost resistance of the concrete E. Thus, in the production of waterproof and frost-resistant concrete, it is important to use a quartz-containing aggregate in order to form the interface phase between the aggregate and the cement stone. Examples of such rock types are granite, granite N 35 - granite and quartz-rich granitoid. An example of a blowing agent comprises an acrylonitrile polymer. Such a blowing agent is sold, for example, by OY Sika Finland AB under the trademark SikaAer & Solid. Alternatively, the blowing agent may contain a surfactant. Such a blowing agent is sold, for example, by OY Sika Finland AB under the trademark SikaAir & ProV5. An example of a plasticizer comprises polycarboxylate. Such a plasticizer is sold, for example, by OY Sika Finland AB under the trademark Sika & ViscoCrete & -2026RB. The silane additive, on the other hand, may comprise, for example, triethoxyoctylsilane or the like.
    [0024] In embodiments of the method, the aggregate in the concrete mass is about 58-72% by volume; typically about 64% by volume, also a minor amount of 58% by volume or may be as high as about 72% by volume. Cement in concrete masses is about 7-19% by volume; typically about 12% by volume, sometimes less than about 7% by volume, or may be as high as about 19% by volume. Water in concrete masses is about 15-30% by volume; typically about 19% by volume, sometimes a smaller amount of about 15% by volume, or may be as high as about 30% by volume.
    [0025] An embodiment for producing waterproof and frost-resistant concrete is described below by way of example. First, the concrete mass is prepared by mixing 385 kg of cement, 1772.9 kg of aggregate and dosing water, a total of 130.7 kg, which was replaced by 9.4 kg of polymer water containing silane. The liquid substitute according to the invention is easy to add because the bulk density of the additive used in the invention, i.e. the polymer water, is almost the same as the water. The concrete is then mixed and both a porosifier and a plasticizer are added to the finished concrete mass. The liquid according to the embodiment, i.e. the polymer water, can also be used in considerably larger or smaller amounts than those described in the example above, depending on the intended use, the qualities of the aggregates and other additives, such as various fibers. The polymer water used in the process can also be used in concrete joints, post-castings and light gravel products.
    D The waterproof and frost-resistant N concrete produced by said method thus comprises quartz-containing aggregate, cement, water and additives. In addition, the concrete comprises as additive one or more of the following: a blowing agent, a plasticizer and an N 30 silane additive, wherein the blowing agent may comprise e.g. an acrylonitrile polymer, the plasticizer may comprise e.g. polycarboxylate and the silane additive may comprise e.g. triethoxyoc. or similar.
    It will be apparent to those skilled in the art that as technology advances, the basic idea of the invention may be implemented in many different ways. The invention and its embodiments are not limited to the examples described above but may vary within the scope of the claims.
    权利要求:
    Claims (9)
    [1]
    A method for producing concrete, characterized in that: a quartz-containing aggregate, cement, water, a blowing agent and a plasticizer (A, B) are mixed, and after mixing, a silane is added and mixed (C).
    [2]
    A method according to claim 1, wherein the mixing is carried out: first mixing cement, water and a blowing agent to form a concrete mass (A1) with a quartz-containing aggregate, adding a plasticizer to the mixed concrete mass and mixing (B), adding silane to the plasticizer-containing concrete mass and mixing (0).
    [3]
    The method according to claim 1, wherein the mixing is carried out by mixing the cement (A2) with the quartz-containing aggregate, mixing the blowing agent with water, mixing the quartz-containing aggregate and the cement to form a concrete mass (A3), adding a plasticizer to the mixed concrete mass and mixing ( ), and silane is added to the concrete mass containing the plasticizer and mixed (OC).
    [4]
    A method according to claim 1, wherein the mixing is carried out by mixing cement and water (A4) in a quartz-containing aggregate, adding a blowing agent when the quartz-containing aggregate, cement and water are - mixed to form a concrete mass (A5) o a plasticizer is added to the mixed concrete mass and mixed (B), and> silane is added to the concrete mass containing the plasticizer and O (O) is mixed. K
    [5]
    A method of making concrete according to any one of claims 1 to 4, wherein said blowing agent comprises an acrylonitrile polymer. E
    [6]
    A method of making concrete according to any one of claims 1 to 5, wherein said blowing agent comprises a surfactant. D
    [7]
    A method of making concrete according to any one of claims 1 to 6, wherein said plasticizer comprises a polycarboxylate. N 35
    [8]
    A process for preparing concrete according to any one of claims 1 to 7, wherein the silane is triethoxyoctylsilane.
    [9]
    A method for producing concrete according to any one of claims 1 to 8, wherein 58 to 72% by volume of aggregate is added, 7 to 19% by volume of cement is added and 15 to 30% by volume of water is added.
    o
    O
    OF
    LÖ <Q
    MN
    OF
    I a a 5+
    LO
    O
    O
    OF
    类似技术:
    公开号 | 公开日 | 专利标题
    FI72962C|1987-08-10|Additive mixture for concrete and use, process for its preparation and its use.
    US20180007191A1|2018-01-04|Lightweight synthetic particle and method of manufacturing same
    RU2471738C1|2013-01-10|Repair-waterproofing composition and additive in form of wollastonite complex for repair-waterproofing composition, mortar, concrete and articles based thereon
    CN108996962A|2018-12-14|Anti-permeation cracking-resistant concrete and preparation method thereof
    AU2002212131B2|2006-05-11|Method for producing concrete or mortar using a vegetal aggregate
    US6402830B1|2002-06-11|Lightweight concrete composition
    KR20180101324A|2018-09-12|A contact layer having a solid filler component
    CN108484211A|2018-09-04|A kind of preparation method of foamed concrete thermal insulation board
    KR101138669B1|2012-04-25|Polymer modified concrete compostion and bridge pavement method using the same
    RU2408553C2|2011-01-10|Mixture for preparing waterproofing sutural composition having penetrating effect
    US4767461A|1988-08-30|Method for manufacturing concrete
    CN101508539A|2009-08-19|Polymer glue powder and method of use thereof
    FI129330B|2021-12-15|Method for producing concrete
    RU2254987C1|2005-06-27|Method of production of items out of a concrete mixture
    KR20030070251A|2003-08-30|Fiber reinforced permeating concrete block and method for manufacturing same
    CN104261780A|2015-01-07|Dry-mixed mortar for exterior wall
    RU2309133C1|2007-10-27|Dry plaster mix for covering cellular concrete
    CN109265117A|2019-01-25|Specific density light aggregate foam concrete with heat insulation function and preparation method thereof
    KR100510085B1|2005-08-25|A manufacturing method of dry mortar
    JP2002284551A|2002-10-03|Admixture for lightweight concrete and light weight concrete
    CN112500107A|2021-03-16|Gypsum mortar containing vitrified micro bubbles
    KR100376751B1|2003-03-19|A manufacturing method of polymer concrete filter pipe
    RU2132828C1|1999-07-10|Concrete mix for hydroinsulation and method of preparing concrete mix for hydroinsulation
    JP6334310B2|2018-05-30|Method for producing hydraulic composition and hydraulic composition
    RU2214376C1|2003-10-20|Dry mortar mixture
    同族专利:
    公开号 | 公开日
    EP3744703A1|2020-12-02|
    FI129330B|2021-12-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE19747794A1|1997-10-30|1999-05-06|Degussa|Process for the production of concrete which has been rendered hydrophobic in the mass|
    US7288147B2|2004-06-15|2007-10-30|Construction Research&Technology Gmbh|Providing freezing and thawing resistance to cementitious compositions|
    WO2017149207A1|2016-03-04|2017-09-08|Invest Saarelainen Oy|Method for manufacturing of concrete and concrete product|
    CN109574566B|2019-01-12|2021-07-13|武汉中阳明建材有限公司|Concrete and preparation method thereof|
    法律状态:
    2021-12-15| FG| Patent granted|Ref document number: 129330 Country of ref document: FI Kind code of ref document: B |
    优先权:
    申请号 | 申请日 | 专利标题
    FI20195441A|FI129330B|2019-05-27|2019-05-27|Method for producing concrete|FI20195441A| FI129330B|2019-05-27|2019-05-27|Method for producing concrete|
    EP20176533.6A| EP3744703A1|2019-05-27|2020-05-26|Method for manufacturing concrete|
    [返回顶部]