KR930023300A - Composition of high strength ultra low heat cement and its manufacturing method - Google Patents

Composition of high strength ultra low heat cement and its manufacturing method Download PDF

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Publication number
KR930023300A
KR930023300A KR1019920008274A KR920008274A KR930023300A KR 930023300 A KR930023300 A KR 930023300A KR 1019920008274 A KR1019920008274 A KR 1019920008274A KR 920008274 A KR920008274 A KR 920008274A KR 930023300 A KR930023300 A KR 930023300A
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KR
South Korea
Prior art keywords
cement
heat
hydration
weight
parts
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KR1019920008274A
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Korean (ko)
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KR940011451B1 (en
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신도철
엄태형
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우덕창
쌍용양회공업 주식회사
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Priority to KR1019920008274A priority Critical patent/KR940011451B1/en
Publication of KR930023300A publication Critical patent/KR930023300A/en
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Publication of KR940011451B1 publication Critical patent/KR940011451B1/en

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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
    • 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

Abstract

최근 콘크리트 구조물의 규모가 대형화되면서 댐(Dam) 이외의 크고 긴 교량의 콘크리트 상판, 교각 등의 하부 구조물, 고층건물의 기초, 원자력 발전소 그리고 항만 구조물공사 등에서 매스콘크리트(Mass concrete)를 시공하는 경우가 증가하고 있다.Recently, as the size of concrete structures has increased, there have been cases where mass concrete has been constructed in concrete structures of large and long bridges other than dams, substructures such as bridges, foundations of high-rise buildings, nuclear power plants, and port structures. It is increasing.

매스 콘크리트에서는 수화열의 발생시 증가하여 콘크리트 구조물의 내부와 외부 간에 일반적으로 약 50℃이상의 온도 차이를 나타나게 되어, 구조물의 내부와 외부간의 온도 응력차에 기인하는 균열 발생의 위험이 따르게 된다.In mass concrete, when the heat of hydration is generated, the temperature difference between the inside and the outside of the concrete structure is generally increased by about 50 ° C. or more, and the risk of cracking is caused by the temperature stress difference between the inside and the outside of the structure.

따라서, 이러한 균열 발생을 방지하기 위해 시공 측면에서도 수화열을 절감시키는 여러 가지 방법들이 사용되고 있으며, 사용 시멘트 측면에서는 가급적 수화열이 낮은 저발열성 시멘트, 즉 클링커 광물중 3CaO Al2O3(C3A)의 함량이 적은 중용열 시멘트나 고로슬래그 및 플라이애쉬 등을 첨가한 혼합 시멘트를 사용하고 있나, 어떤 방법이든 간에 수화열을 낮추는데 한계가 있으며 또 수화열이 낮아지는 것에 비례하여 초기강도 발현율이 저조하므로 오히려 초기재령에서의 온도 균열 발생 위험이 더 클수도 있다는 문제점이 존재한다.Therefore, in order to prevent the occurrence of cracks, various methods for reducing the heat of hydration are used in the construction aspect, and in terms of the cement used, low calorific cement having low heat of hydration, that is, 3CaO Al 2 O 3 (C 3 A) in clinker minerals. Medium-heat cement with low content of petroleum or mixed cement with blast furnace slag and fly ash is used, but there is a limit to lower the heat of hydration in any method, and the initial strength expression rate is low in proportion to lower the heat of hydration. The problem exists that the risk of temperature cracking at an age may be greater.

본 발명은 종래를 기술 또는 연구결과에서 나타난 단점들을 해결하기 위하여, 보통 포틀랜드 시멘트 제조용 클링커(이하 클링커라 칭함)에 무수석고(CaSO4), 무수망초(Na2SO4)및 고로 슬래그 첨가하여 분쇄한 후, 여기에 제지공업에서 폐기물로 산출되는 규산 알루미나질의 제지회분을 적절히 혼합하여서 만든 고강도형 초저발열(高强度型 超底發熱) 시멘트 조성물이다. 즉 중용열 시멘트 또는 혼합 시멘트보다 수화열은 낮으면서도 강도 발현은 양호하며 또한 제조방법이 용이하다는 것을 특징으로 하는 고강형 초저발열 시멘트조성물 및 그 제조방법을 제공하는 것이다.In order to solve the shortcomings of the prior art or research results, the present invention is usually pulverized by adding anhydrous gypsum (CaSO 4 ), anhydrous manganese (Na 2 SO 4 ) and blast furnace slag to a clinker (hereinafter referred to as clinker) for manufacturing Portland cement. After that, it is a high-strength, ultra-low calorific cement composition made by appropriately mixing the alumina siliceous paper ash produced in the papermaking industry. That is, to provide a high-strength ultra-low calorific cement composition and a method for producing the same, characterized in that the heat of hydration is lower than that of the middle heat cement or the mixed cement, and the strength is good.

Description

고강도 초저발열 시멘트를 조성물 및 그 제조방법Composition of high strength ultra low heat cement and its manufacturing method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims (2)

보통 포틀랜드 시멘트 제조용 클링커 100중량부에 대하여 무수석고 6~ 15중량부, 무수망초 2~ 5중량부 및 고로슬래그 200~ 300중량부로 첨가하여 분말도 3000~ 4000㎠/g수준으로 분쇄한 베이스 시멘트 100중량부에 대하여 제지공업을 폐수산물인 제지회분을 10~ 30 중량부로 첨가하는 것을 특징으로 하는 고강도형 초저발열 시멘트의 조성물.100 to 100 parts by weight of clinker for ordinary portland cement, 6 to 15 parts by weight of anhydrous gypsum, 2 to 5 parts by weight of anhydrous manganese, and 200 to 300 parts by weight of blast furnace slag, and ground to 100 to 4000 cm / g. The composition of the high-strength ultra-low calorific cement, characterized by adding 10 to 30 parts by weight of paper ash, which is a waste product, in the paper industry. 보통 포틀랜드 시멘트 제조용 클링커 100중량부에 대하여 무수석고 6~ 15 중량부, 무수망초 2~ 5 중량부 및 고로슬래그 200~ 300중량부로 첨가하여 분말도 3000~ 4000㎠/g 수준으로 분쇄한 베이스 시멘트 100중량 부에 대하여 분말도 8000~ 12000㎠/g 수준으로 분쇄한 제지공업을 폐부산물인 제지회분 분말을 10~ 30중량부로 첨가하여 균질 혼합하여 제조하는 고강도형 초저발열 시멘트의 제조방법.100 to 100 parts by weight of clinker for ordinary portland cement, 6 to 15 parts by weight of anhydrous gypsum, 2 to 5 parts by weight of anhydrous manganese, and 200 to 300 parts by weight of blast furnace slag, and ground to 100 to 4000 cm / g. Method for producing a high strength ultra low heat cement produced by homogeneously mixing by adding 10 ~ 30 parts by weight of the paper ash powder, which is a waste by-product, to the paper mill pulverized to a level of 8000 ~ 12000 ㎠ / g of the powder by weight. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920008274A 1992-05-16 1992-05-16 Process for the preparation of heat cement KR940011451B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920008274A KR940011451B1 (en) 1992-05-16 1992-05-16 Process for the preparation of heat cement

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Application Number Priority Date Filing Date Title
KR1019920008274A KR940011451B1 (en) 1992-05-16 1992-05-16 Process for the preparation of heat cement

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KR930023300A true KR930023300A (en) 1993-12-18
KR940011451B1 KR940011451B1 (en) 1994-12-15

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100544062B1 (en) * 2003-07-24 2006-01-23 주식회사 실크로드시앤티 Crack inhibitor for cement mortar
KR101306182B1 (en) * 2013-02-08 2013-09-09 하나케이텍(주) Plenty of recycling aggregate and environment-friendly block for shore protection binder composition
KR102045081B1 (en) 2019-06-13 2019-11-15 씨엘엠테크(주) High speed hardening and high strength concreate composition comprising basalt fiber for enhancing strength, freezing and thawing resistance
KR102050992B1 (en) 2019-06-13 2019-12-02 씨엘엠건설(주) Manhole repairing method using high speed hardening and high strength concreate composition comprising basalt fiber for enhancing strength, freezing and thawing resistance

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100946351B1 (en) * 2009-03-19 2010-03-09 아세아시멘트주식회사 A composite generation of low heat cement and that of manufacturing method
KR100954592B1 (en) * 2009-10-19 2010-04-26 아세아시멘트주식회사 A composite generation of low heat cement and that of manufacturing method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100544062B1 (en) * 2003-07-24 2006-01-23 주식회사 실크로드시앤티 Crack inhibitor for cement mortar
KR101306182B1 (en) * 2013-02-08 2013-09-09 하나케이텍(주) Plenty of recycling aggregate and environment-friendly block for shore protection binder composition
KR102045081B1 (en) 2019-06-13 2019-11-15 씨엘엠테크(주) High speed hardening and high strength concreate composition comprising basalt fiber for enhancing strength, freezing and thawing resistance
KR102050992B1 (en) 2019-06-13 2019-12-02 씨엘엠건설(주) Manhole repairing method using high speed hardening and high strength concreate composition comprising basalt fiber for enhancing strength, freezing and thawing resistance

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