WO2012138088A2 - Composition de béton à hautes performances utilisant du laitier - Google Patents

Composition de béton à hautes performances utilisant du laitier Download PDF

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Publication number
WO2012138088A2
WO2012138088A2 PCT/KR2012/002449 KR2012002449W WO2012138088A2 WO 2012138088 A2 WO2012138088 A2 WO 2012138088A2 KR 2012002449 W KR2012002449 W KR 2012002449W WO 2012138088 A2 WO2012138088 A2 WO 2012138088A2
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WO
WIPO (PCT)
Prior art keywords
weight
slag
concrete
cement
concrete composition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2012/002449
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English (en)
Korean (ko)
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WO2012138088A3 (fr
Inventor
정원경
권기창
강승희
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SAMWOO INNOVATION MAINTENANCE CONSTRUCTION CO Ltd
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SAMWOO INNOVATION MAINTENANCE CONSTRUCTION CO Ltd
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Publication date
Application filed by SAMWOO INNOVATION MAINTENANCE CONSTRUCTION CO Ltd filed Critical SAMWOO INNOVATION MAINTENANCE CONSTRUCTION CO Ltd
Publication of WO2012138088A2 publication Critical patent/WO2012138088A2/fr
Publication of WO2012138088A3 publication Critical patent/WO2012138088A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • C04B28/04—Portland cements
    • 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
    • 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
    • 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
    • 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
    • C04B28/14—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 calcium sulfate cements
    • C04B28/16—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 calcium sulfate cements containing anhydrite, e.g. Keene's cement
    • 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

Definitions

  • the present invention relates to an economical and eco-friendly concrete composition, while improving the overall strength of concrete by utilizing oxidized slag, a by-product generated in an electric furnace steelmaking process, and significantly reducing the content of cement in concrete. 8 to 16% by weight of cement, 3 to 6% by weight of water, 28 to 59% by weight of fine aggregate, 30 to 50% by weight of coarse aggregate, and high performance using slag, characterized in that 30 to 100% of the fine aggregate is slag.
  • slag refers to a solvent, a non-metallic substance, a metal oxide, or the like that floats or remains on waste water when melting iron ore or scrap in a furnace, an electric furnace, a cupola, and the like. It prevents the molten steel surface from being oxidized by air and preserves the surface.
  • the blast furnace slag and steel slag currently occurring in Korea are 9.5 million tons and 7.5 million tons, respectively, totaling 17 million tons, and electric furnace slag is about 3.4 million tons and converter slag is about 4.1 million tons.
  • the slag collected in this way is used as road roadbed, cement admixture, civil engineering material and concrete aggregate.
  • concrete aggregates are commonly used as the main components of mortar or concrete together with cement in the manufacture of concrete, but gravel, crushed stone, crushed stone, crushed sand, and natural sand are generally used, but recently, natural aggregate for concrete is depleted and insufficient.
  • strict regulations are expected in the future for the collection of river aggregates and the development of quarries based on river maintenance and environmental preservation.
  • the conventional concrete composition has a high cement content, the degree of expansion and contraction of the concrete due to the heat of hydration is severe, the dry shrinkage is easy to crack due to the large amount of dry shrinkage, the water resistance is low and the fluidity is low, so a large quantity of concrete is required There was this.
  • the present invention significantly reduces the content of cement constituting the concrete composition and replaces most of the natural aggregates with oxidized slag with electricity, thereby expanding the usability of industrial waste and preventing the deterioration of concrete quality due to depletion of natural aggregates.
  • the present invention has suppressed the expansion and contraction of the initial concrete, can significantly reduce the amount of dry shrinkage, and has developed a high-performance concrete composition that can greatly reduce the amount of water used in the concrete production by increasing the waterproof and fluidity.
  • the present invention was devised to solve the above problems, and provides a high-performance concrete composition that can expand the usability of industrial waste, prevent the deterioration of concrete quality due to the depletion of natural aggregates, as well as obtain the economic effect of cost reduction. Its purpose is to.
  • the present invention by reducing the content of cement, greatly reduces the heat of hydration generated during the concrete hydration reaction to suppress the expansion and contraction of the initial concrete, and drastically reduce the amount of dry shrinkage acting as a major cause of cracking in concrete
  • the purpose is to provide a high performance concrete composition that can be.
  • the present invention can maximize the water-tightness of the concrete to significantly increase the water resistance, and provides a high-performance concrete composition that can greatly reduce the amount of use by significantly increasing the fluidity in the solid state due to the spherical slag particles There is a purpose.
  • the present invention includes fast cement 8 to 16% by weight, water 3 to 6% by weight, fine aggregate 28 to 59% by weight, coarse aggregate 30 to 50% by weight, 30 of the fine aggregate It provides a high-performance concrete composition using slag, characterized in that ⁇ 100% is slag.
  • the particle size of the slag is 1.2 to 5.0mm, and may further include a polymer of 5 to 35% by weight of the fast cement.
  • the polymer is any one selected from the group consisting of SB (60 ⁇ 70% by weight, butadiene 30 ⁇ 40% by weight) latex, PAE emulsion, EVA emulsion, epoxy resin, acrylic resin, polyester, water-soluble MMA It is preferably a water-soluble liquid polymer composed of a mixture of SB (60 ⁇ 70% by weight, butadiene 30 ⁇ 40% by weight) latex, PAE emulsion, EVA emulsion, epoxy resin, acrylic resin, polyester, water-soluble MMA It is preferably a water-soluble liquid polymer composed of a mixture of SB (60 ⁇ 70% by weight, butadiene 30 ⁇ 40% by weight) latex, PAE emulsion, EVA emulsion, epoxy resin, acrylic resin, polyester, water-soluble MMA It is preferably a water-soluble liquid polymer composed of a mixture
  • the fast cement is 20 to 60% by weight of Irwin-based cemented cement, 30 to 55% by weight of Portland cement, 5 to 25% by weight of gypsum, 0.1 to 1.5% by weight of curing agent, 0.1 to 3.0% by weight of curing accelerator, dispersant It is preferable that it is a polymer reforming cement containing 0.3 to 1.5% by weight, and in order not to interfere with the hydration of Portland cement due to the incorporation of the polymer, it is preferable to contain free CaSO 4 .
  • the concrete of the present invention having the configuration as described above can achieve an effect of more than 300kgf / cm2 4 hours strength.
  • the high-performance concrete composition of the present invention unlike the existing concrete composition that the replacement ratio of the slag is very low, 11 ⁇ 30%, replaces most of the aggregate aggregate with the oxidized slag having a uniform density than natural aggregate and significantly reduce the expensive cement content As a result, it is possible to improve the overall strength of concrete, to expand the usability of industrial waste, to prevent the deterioration of concrete quality due to the depletion of natural aggregates, and to obtain the economic effect of cost reduction.
  • the high-performance concrete composition of the present invention by reducing the cement content, significantly lower the heat of hydration generated during the concrete hydration reaction to suppress the expansion and contraction of the initial concrete, the amount of dry shrinkage acting as the largest cause of cracking in concrete It can significantly reduce the water, maximize the water tightness of the concrete to increase the waterproofness, and greatly increase the fluidity can significantly reduce the amount of use in the production of concrete.
  • 1 is a comparison graph of the internal temperature measurement of concrete according to the existing concrete and the composition of the present invention.
  • Figure 2 is a comparison of dry shrinkage measurement of concrete according to the existing concrete and the composition of the present invention.
  • High-performance concrete composition of the present invention includes fast cement 8-16% by weight, water 3-6% by weight, fine aggregate 28-59% by weight, coarse aggregate 30-50% by weight, 30-100% of the fine aggregate slag It is characterized by that.
  • the present invention uses a fast-hard cement for the cement constituting the concrete composition, significantly reducing the content of the cement to 8 to 16% by weight, and replaces 30 to 100% of the natural aggregate used in the manufacture of concrete with oxidized slag This significantly increased the content of oxidized slag in the concrete.
  • the concrete may further include a polymer of 5 to 35% by weight of the fast cement
  • the polymer may be used a variety of materials that can increase the durability, preferably SB ( 60 to 70% by weight of styrene, 30 to 40% by weight of butadiene)
  • SB 60 to 70% by weight of styrene, 30 to 40% by weight of butadiene
  • a water-soluble liquid polymer including any one or more of latex, PAE emulsion, EVA emulsion, epoxy resin, acrylic resin, polyester, water-soluble MMA may be used.
  • the fast-hard cement is 20 ⁇ 60% by weight of excellent stability super fast cement cement, Portland cement 30 ⁇ 55% by weight, gypsum 5 ⁇ 25% by weight, coagulation regulator 0.1 ⁇ 1.5 It is preferable to use a polymer reforming cement comprising a weight%, a curing accelerator 0.1 to 3.0% by weight, and a dispersant 0.3 to 1.5% by weight.
  • the Irwin cemented carbide cements are cemented cement cemented with Arwin-based clinker containing calcium sulfo aluminate. Rapid strength development and reaction with alite, the main mineral of Portland cement, over a long period of time can be more dense, resulting in high strength.
  • the concrete composition having the above configuration can reduce the cost of cement and reduce the cost, and at the same time, the watertightness and filling properties are increased even with a small amount of cement by using an oxide slag having a uniform density than natural aggregates.
  • 4 hours strength is 300 kgf / cm ⁇ 2> or more, Preferably it is possible to manufacture high strength concrete of 400-500 kgf / cm ⁇ 2> of 4 hours strength.
  • the particle size of the slag is preferably 1.2 ⁇ 5.0mm.
  • general concrete is not a complete waterproof body, but when slag is used, the water tightness of the concrete can be maximized, and the waterproofness is greatly increased.
  • the fluidity is greatly increased in the solid state due to the effect of spherical slag particles. It can greatly reduce the quantity to be said and the reduction of such quantity can express the effects of high strength, high performance, shrinkage prevention and the like.
  • Table 1 shows the mixing examples of the existing fast-hard polymer concrete (comparative example) and the concrete composition (Examples 1 to 4) of the present invention
  • Table 2 is a mixing example of the comparative examples and Examples 1 to 4 It shows a star effect.
  • Table 3 and Figure 1 shows the concrete temperature change with time of the concrete composition of the Comparative Example and Examples 2, 4, the concrete using the composition of the present invention is less cement than conventional fast-hard polymer concrete By using, it can be seen that the internal temperature rise due to the heat of hydration is much smaller.
  • Table 4 and Figure 2 shows the concrete shrinkage strain of the composition of the Comparative Examples and Examples 2, 4, the concrete using the composition of the present invention due to the reduction of cement content concrete drying than conventional fast-rigid polymer concrete It was confirmed that the shrinkage is considerably reduced, and this reduction of the dry shrinkage is a major point that can suppress the early cracking of the concrete.
  • the waterproofness of concrete is evaluated by chlorine ion permeation test, and the electrode container is fixed on both sides of the concrete during the test, the circuit is composed of the electrodes from these containers as terminals and the electrolyte is passed through the electrolyte solution.
  • the measured voltage is converted into a current value, and the total amount of electric charge passed is expressed as Coulomb.
  • Table 5 is a table evaluating the permeability characteristics according to the amount of charge passed through the chlorine ion permeation test described above
  • Table 6 shows the measured values of the waterproofness of the Comparative Examples and Examples 2, 4 composition, the cement content of Due to the decrease and increase in the slag content, it can be seen that the concrete using the composition of the present invention has a much higher water resistance than conventional fast-hard polymer concrete.
  • the high-performance concrete composition of the present invention unlike the existing concrete composition, which has a low replacement ratio of slag, replaces most of the aggregates with an oxidized slag having a uniform density to increase the density and filling properties of the concrete.
  • cost savings can be achieved.
  • the high-performance concrete composition of the present invention can significantly reduce the heat of hydration by reducing the cement content, inhibit the expansion and contraction of the initial concrete, significantly reduce the amount of dry shrinkage, maximize the water tightness of the concrete to increase the waterproofness, fluidity In order to increase the amount of concrete used in the manufacture of concrete can be greatly reduced.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

La présente invention porte sur une composition de béton qui est économique et écologique, par : l'utilisation de laitier oxydant, qui est un sous-produit généré pendant un processus de fabrication d'acier au four électrique à arc sous la forme d'un agrégat fin ; l'amélioration de la robustesse globale du béton ; et la réduction considérable de la teneur en ciment à l'intérieur du béton, et porte de façon spécifique sur une composition de béton à hautes performances utilisant du laitier, laquelle composition comprend de 8 à 16 % en poids de ciment à durcissement rapide, de 3 à 6 % en poids d'eau, de 28 à 59 % en poids d'agrégat fin et de 30 à 50 % en poids d'agrégat grossier, de 30 à 100 % de l'agrégat fin étant du laitier. La robustesse peut être améliorée et les coûts de fabrication peuvent être économisés par la réduction de la teneur en ciment constituant la composition de béton mentionnée ci-dessus et le remplacement de la plupart de l'agrégat fin par du laitier oxydant de four électrique à arc.
PCT/KR2012/002449 2011-04-05 2012-04-02 Composition de béton à hautes performances utilisant du laitier Ceased WO2012138088A2 (fr)

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Application Number Priority Date Filing Date Title
KR10-2011-0030948 2011-04-05
KR20110030948A KR101051097B1 (ko) 2011-04-05 2011-04-05 슬래그를 이용한 고성능 콘크리트 조성물

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WO2012138088A2 true WO2012138088A2 (fr) 2012-10-11
WO2012138088A3 WO2012138088A3 (fr) 2012-12-06

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015018952A1 (fr) * 2013-08-03 2015-02-12 Universidad De Cádiz Procédé pour la fabrication de béton de mâchefer
WO2016099238A1 (fr) * 2014-12-19 2016-06-23 Dynasol Elastómeros, S.A. De C.V. Latex de sbs à utiliser dans la modification du béton
ES2683224A1 (es) * 2017-03-23 2018-09-25 Universidad De Burgos Acabado superficial para pavimentos hormigonados y procedimiento de aplicación.

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KR101239075B1 (ko) * 2012-10-19 2013-03-05 (주)삼우아이엠씨 초속경 라텍스개질 콘크리트 조성물
CN103073210B (zh) * 2013-02-02 2014-06-18 李素娥 一种用于道路混凝土的改性高碳铬铁渣骨料及其制备方法
KR101556969B1 (ko) 2013-10-29 2015-10-19 이창용 메틸메타크릴레이트 수지를 포함하는 속경성 도로보수제 및 이를 이용한 도로 보수방법
KR101588722B1 (ko) * 2014-08-11 2016-02-12 주식회사한수나텍 콘크리트 포장 보수용 속경성 및 저온대응형 폴리머 개질 마그네시아-아윈계 복합 시멘트 콘크리트 조성물
KR102031784B1 (ko) * 2019-04-23 2019-10-14 씨텍 주식회사 고로수재슬래그 및 페로니켈 복합잔골재를 사용한 친환경 속경성 콘크리트 조성물
CN112521089A (zh) * 2020-12-07 2021-03-19 东南大学 全洞渣高性能混凝土及制备方法
KR102403945B1 (ko) 2021-12-09 2022-05-31 (주)콘텍이엔지 에폭시 개질 초속경 시멘트 콘크리트 조성물 및 이를 이용한 콘크리트 구조물 및 도로포장의 단면 보수보강 방법
KR102392363B1 (ko) 2021-12-09 2022-05-03 (주)콘텍이엔지 에폭시 개질 초속경 시멘트 모르타르 조성물 및 이를 이용한 콘크리트 구조물 및 도로포장의 단면 보수보강 방법

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KR100755272B1 (ko) 2006-03-03 2007-09-04 쌍용양회공업(주) 라텍스개질 콘크리트용 속경성 시멘트 조성물
KR101048669B1 (ko) * 2007-01-31 2011-07-12 (주)두영티앤에스 보수용 모르타르 및 이를 사용한 터널 보수 공법
KR100873391B1 (ko) 2008-08-08 2008-12-11 주식회사 홍서이엔씨 속경성 콘크리트 조성물, 그 제조방법 및 속경성 콘크리트 조성물을 이용한 콘크리트 포장 보수공법
KR100958535B1 (ko) 2009-12-03 2010-05-18 (주) 지오시스 폴리머개질 초속경 콘크리트 조성물 및 이를 이용한 교면 포장공법

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015018952A1 (fr) * 2013-08-03 2015-02-12 Universidad De Cádiz Procédé pour la fabrication de béton de mâchefer
WO2016099238A1 (fr) * 2014-12-19 2016-06-23 Dynasol Elastómeros, S.A. De C.V. Latex de sbs à utiliser dans la modification du béton
ES2683224A1 (es) * 2017-03-23 2018-09-25 Universidad De Burgos Acabado superficial para pavimentos hormigonados y procedimiento de aplicación.

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Publication number Publication date
WO2012138088A3 (fr) 2012-12-06
KR101051097B1 (ko) 2011-07-21

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