KR20090114231A - Ready-mixed concrete composition using bottom ash aggregate and its manufacturing method - Google Patents

Ready-mixed concrete composition using bottom ash aggregate and its manufacturing method Download PDF

Info

Publication number
KR20090114231A
KR20090114231A KR20080040061A KR20080040061A KR20090114231A KR 20090114231 A KR20090114231 A KR 20090114231A KR 20080040061 A KR20080040061 A KR 20080040061A KR 20080040061 A KR20080040061 A KR 20080040061A KR 20090114231 A KR20090114231 A KR 20090114231A
Authority
KR
South Korea
Prior art keywords
water
ready
bottom ash
mixed concrete
aggregate
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.)
Granted
Application number
KR20080040061A
Other languages
Korean (ko)
Other versions
KR100946237B1 (en
Inventor
박병욱
Original Assignee
바텀애쉬콘주식회사
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 바텀애쉬콘주식회사 filed Critical 바텀애쉬콘주식회사
Priority to KR20080040061A priority Critical patent/KR100946237B1/en
Publication of KR20090114231A publication Critical patent/KR20090114231A/en
Application granted granted Critical
Publication of KR100946237B1 publication Critical patent/KR100946237B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00Use 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
    • C04B18/04Waste materials; Refuse
    • C04B18/06Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
    • C04B18/061Ashes from fluidised bed furnaces
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00Use 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
    • C04B18/04Waste materials; Refuse
    • C04B18/06Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
    • C04B18/08Flue dust, i.e. fly ash
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00Use 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
    • C04B18/04Waste materials; Refuse
    • C04B18/14Waste materials; Refuse from metallurgical processes
    • C04B18/146Silica fume
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions 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
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039Premixtures of ingredients
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/30Water reducers, plasticisers, air-entrainers, flow improvers
    • C04B2103/302Water reducers
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • C04B2201/52High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use 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)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)

Abstract

본 발명은 석탄화력발전소에서 배출되는 바텀애쉬를 골재로 이용하여 기존의 레미콘을 대체하기 위한 레미콘 조성물 및 그 제조 방법에 관한 것으로서, 물, 시멘트, 골재를 배합하여 제조되는 레미콘 조성물에 있어서, 상기 레미콘 조성물은 시멘트 25∼35중량%, 불특정의 함수비를 갖는 자연 상태의 바텀애쉬 굵은 골재 30∼50중량% 및 바텀애쉬 잔골재 20∼35중량%, 감수제가 첨가된 혼합물에 물을 첨가하되, 상기 레미콘의 제조 장치에 마련된 수분측정 장치에 의해 상기 골재에 함유된 함수량을 측정하고, 물/시멘트 비가 40∼50%의 범위에서 유지되도록 상기 레미콘의 제조 장치는 상기 측정된 함수량을 제외한 물을 공급하고 혼합하여 슬럼프 10.0㎝±2.0, 공기량 3∼5% 및 28일 압축강도 300∼600㎏/㎠가 되도록 제조된다.The present invention relates to a ready-mixed concrete composition for replacing the existing ready-mixed concrete using the bottom ash discharged from coal-fired power plant as an aggregate, and a method for manufacturing the same, in the ready-mixed concrete composition prepared by mixing water, cement, aggregate, The composition is 25 to 35% by weight of cement, 30 to 50% by weight of natural bottom ash coarse aggregate having an unspecified water content and 20 to 35% by weight of bottom ash fine aggregate, water is added to the mixture with a water reducing agent, The moisture content contained in the aggregate is measured by a moisture measuring device provided in the manufacturing apparatus, and the manufacturing apparatus of the ready-mixed concrete is supplied and mixed except for the measured moisture content so that the water / cement ratio is maintained in the range of 40 to 50%. It is manufactured to have a slump of 10.0 cm ± 2.0, an air content of 3 to 5%, and a compressive strength of 300 to 600 kg / cm 2 for 28 days.

석탄화력발전소에서 발생되는 폐기물인 바텀애쉬를 콘크리트의 골재(굵은 골재, 잔골재)로 사용할 수 있고, 대량으로 소요되는 레미콘 조성물을 공급할 수 있는 효과가 있다.Bottom ash, which is a waste generated from coal-fired power plants, can be used as aggregate of concrete (coarse aggregate, fine aggregate), and it is effective to supply a ready-mixed concrete composition required in large quantities.

Description

바텀애쉬 골재를 이용한 레미콘 조성물 및 그 제조 방법{Compositions and Method for production of ready mix concrete by using bottom ash as aggregates}Composition and method for production of ready-mixed concrete using bottom ash aggregates {Compositions and Method for production of ready mix concrete by using bottom ash as aggregates}

본 발명은 석탄화력발전소에서 배출되는 바텀애쉬 골재를 이용한 레미콘 조성물 및 그 제조 방법에 관한 것으로서, 더욱 상세하게는 일반 골재를 이용한 레미콘과 동등하거나 그 이상의 강도를 가지며, 레미콘을 제조하기 위해 바텀애쉬 골재에 함유된 함수량을 제외하고 첨가하여야 할 물을 공급하여 제조되는 바텀애쉬 골재를 이용한 레미콘 조성물 및 그 제조 방법에 관한 것이다.The present invention relates to a ready-mixed concrete composition using a bottom ash aggregate discharged from a coal-fired power plant and a method for manufacturing the same, and more specifically, having a strength equal to or greater than that of a ready-mixed concrete using a general aggregate, and bottom ash aggregate to manufacture ready-mixed concrete The present invention relates to a ready-mixed concrete composition using a bottom ash aggregate prepared by supplying water to be added except water content, and a method of manufacturing the same.

일반적인 레미콘은 시멘트, 골재(조골재, 모래), 혼화재 및 물을 사용하여 표준 시방배합에 따라 제조한다.General ready-mixed concrete is manufactured according to standard specification using cement, aggregate (crude aggregate, sand), admixture and water.

이러한 레미콘에서 사용되는 골재는 천연의 골재를 사용하고 있으며, 천연 골재는 국내에서 공급이 부족하여 외국으로부터 수입하여 사용하던가, 암석을 분쇄하여 사용하고 있다.Aggregates used in these ready-mixed concrete is used natural aggregates, natural aggregates are imported from foreign countries because of insufficient supply in the country, or used to crush the rock.

이러한 골재부족 문제를 해결하기 위하여 바텀애쉬를 사용한 고강도 콘크리트 조성물에 관한 기술이 대한민국 공개특허공보 10-2005-0001983호에 개시되어 있 다.In order to solve the problem of aggregate shortage, a technology related to a high-strength concrete composition using bottom ash is disclosed in Korean Unexamined Patent Publication No. 10-2005-0001983.

상기 공보에 개시된 기술은 물, 시멘트, 모래, 중간 골재, 굵은 골재 등을 배합하여 사용하는 고강도 콘크리트 조성물에 있어서, 상기 콘크리트 구성성분이 시멘트 30∼40중량% , 모래 대체재로서 바텀애쉬 15∼25중량%, 중간 골재 대체재로서 바텀애쉬 10∼20중량%, 굵은 골재 대체재로서 바텀애쉬 10∼20중량%, 미분 5∼10중량%를 포함하고, 혼화제(라텍스)를 첨가하여 이루어진다.The technique disclosed in the above publication is a high-strength concrete composition using water, cement, sand, intermediate aggregate, coarse aggregate, etc., wherein the concrete component is 30 to 40% by weight of cement, 15 to 25% by weight of bottom ash as a substitute for sand %, 10 to 20% by weight of bottom ash as an intermediate aggregate substitute, 10 to 20% by weight of bottom ash as a coarse aggregate substitute, 5 to 10% by weight of fine powder, and is made by adding a admixture (latex).

또한, 바텀애쉬를 사용한 고성능 콘크리트 조성물에 관한 기술이 대한민국 공개특허공보 10-2005-0082083호에 개시되어 있다.In addition, a technique related to a high-performance concrete composition using a bottom ash is disclosed in Republic of Korea Patent Publication No. 10-2005-0082083.

상기 공보에 개시된 기술은 물, 시멘트, 골재, 일반 모래를 배합하여 사용하는 고성능 콘크리트의 조성물에 있어서, 상기 골재는 천연쇄석 굵은 골재이며, 상기 천연쇄석 굵은 골재의 사이즈는 10 내지 25㎜이고, 상기 일반 모래의 대체재로서 화력발전소에서 발생되는 폐기물인 바텀애쉬 모래가 사용되고, 상기 바텀애쉬 모래의 사이즈는 5㎜이하이며, 상기 콘크리트 조성물의 구성 성분으로서 상기 바텀애쉬 모래가 ㎥당 총 소요 조성물 구성성분의 20 내지 26중량% 포함되고, 상기 천연쇄석 굵은 골재가 ㎥당 총 소요 조성물 구성성분의 34 내지 46중량% 포함되며, 상기 조성물에 혼화재, 유동화제 및 감수제가 첨가되고, 물의 혼합수량은 상기 시멘트에 대해 20 내지 25중량%로 하여 수중양생 함으로써, 콘크리트의 설계 강도가 600 내지 800kg/㎠에 적용되는 것이다.The technique disclosed in the publication is a composition of high-performance concrete used by mixing water, cement, aggregate, and general sand, wherein the aggregate is a natural crushed coarse aggregate, the size of the natural crushed coarse aggregate is 10 to 25 mm, Bottom ash sand, which is a waste generated from a thermal power plant, is used as a substitute for general sand, and the size of the bottom ash sand is 5 mm or less, and the bottom ash sand is a component of the concrete composition. 20 to 26% by weight, the natural stone coarse aggregate comprises 34 to 46% by weight of the total required composition components per m 3, admixtures, glidants and water reducing agents are added to the composition, the mixed amount of water is added to the cement By curing in water at 20 to 25% by weight, the design strength of concrete is applied to 600 to 800kg / ㎠ The.

상기 공보에 개시된 바와 같은 바텀애쉬를 사용한 콘크리트 조성물들은 주로 실험실에서 이루어지거나 적은 양의 콘크리트인 경우에 그 실효성이 있다.Concrete compositions using bottom ash as disclosed in the above publication are effective in the case of mainly made in the laboratory or a small amount of concrete.

그러나 상기 공보에 개시된 기술에서는 바텀애쉬를 이용하여 대규모로 레미콘을 일관 생산하기 위한 방법이 개시되어 있지 않고, 그러한 시도는 현재까지도 없다.However, the technique disclosed in this publication does not disclose a method for producing a ready-mixed concrete on a large scale using bottom ash, and no such attempt has been made.

이는 바텀애쉬 만을 골재로 사용하여 일반 레미콘과 동일한 압축강도 등 제반 물성을 가진 제품을 생산하기 위한 조업 데이터가 없기 때문이고, 화력발전소의 매립장에 매립된 바텀애쉬는 그 크기가 다양하고 함수비가 18∼35%로서 불특정의 함수비를 갖는 바텀애쉬를 대규모로 사용하는 레미콘의 골재에 적용하기에는 한계가 있었기 때문이다.This is because there is no operation data for producing products with the same physical properties as the general ready-mixed concrete using only bottom ash as aggregate, and bottom ash embedded in the landfill of thermal power plants has various sizes and water content. This is because there was a limitation in applying the ready-mixed concrete ready-to-use concrete bottom ash, which has an unspecified water content of 35%.

따라서, 본 발명의 목적은 상기와 같은 종래의 문제점을 해결하기 위한 것으로서, 바텀애쉬를 골재(굵은 골재 또는 잔골재)로 사용하여 저 비용으로 종래의 레미콘과 동일하거나 보다 고강도의 제품을 생산할 수 있는 바텀애쉬를 이용한 레미콘 조성물 및 그 제조 방법을 제공하기 위한 것이다.Therefore, an object of the present invention is to solve the conventional problems as described above, by using the bottom ash aggregate (coarse aggregate or fine aggregate), the bottom can produce a product of the same or higher strength than the conventional ready-mixed concrete at low cost It is to provide a ready-mixed concrete composition using ash and a method for producing the same.

또한, 본 발명의 다른 목적은 물/시멘트 비를 정확하게 제어함으로써, 레미콘의 물성을 향상시킬 수 있으며, 레미콘 수요자의 요구에 따르는 물성을 갖는 레미콘 조성물 및 그 제조 방법을 제공하기 위한 것이다.In addition, another object of the present invention is to provide a ready-mixed concrete composition and a method of manufacturing the same, which can improve the physical properties of the ready-mixed concrete, by controlling the water / cement ratio, and has the properties according to the requirements of the ready-mixed concrete consumer.

또한, 본 발명의 다른 목적은 물(경수) 대신 연수를 사용함으로써, 감수 효과를 증진시켜 압축강도와 워커빌리티를 향상시킬 수 있으며, 레미콘의 응고시간을 단축시킬 수 있는 레미콘 조성물 및 그 제조 방법을 제공하기 위한 것이다. In addition, another object of the present invention by using soft water instead of water (hard water), to improve the water-reducing effect to improve the compressive strength and workability, to provide a ready-mixed concrete composition and a method for manufacturing the same that can shorten the solidification time of ready-mixed concrete It is to.

상기 목적을 달성하기 위한 본 발명에 따른 레미콘 조성물은 물, 시멘트, 골재를 배합하여 제조되는 레미콘 조성물에 있어서, 상기 레미콘 조성물은 시멘트 25∼35중량%, 불특정의 함수비를 갖는 자연 상태의 바텀애쉬 굵은 골재 30∼50중량% 및 바텀애쉬 잔골재 20∼35중량%, 감수제가 첨가된 혼합물에 물을 첨가하되, 상기 레미콘의 제조 장치에 마련된 수분측정 장치에 의해 상기 골재에 함유된 함수량을 측정하고, 물/시멘트 비가 40∼50%의 범위에서 유지되도록 상기 레미콘의 제조 장치는 상기 측정된 함수량을 제외한 물을 공급하고 혼합하여 슬럼프 10.0㎝±2.0, 공기량 3∼5% 및 28일 압축강도 300∼600㎏/㎠가 되도록 제조되는 것을 특징으로 한다.The ready-mixed concrete composition according to the present invention for achieving the above object is prepared by mixing water, cement, aggregate, the ready-mixed concrete composition is 25 to 35% by weight of cement, natural ash ash thick with an unspecified water content Water is added to the mixture of 30 to 50% by weight of aggregate and 20 to 35% by weight of bottom ash fine aggregate and water reducing agent, and the water content of the aggregate is measured by a moisture measuring device provided in the production apparatus of the ready-mixed concrete, and water In order to maintain the cement ratio in the range of 40 to 50%, the ready-mixed concrete manufacturing device supplies and mixes water except the measured water content, and slumps 10.0 cm ± 2.0, air volume 3 to 5%, and 28 days compressive strength of 300 to 600 kg. It is characterized in that it is manufactured to be / cm2.

또, 본 발명에 따른 레미콘 조성물에 있어서, 상기 물은 연수인 것을 특징으로 한다.In addition, in the ready-mixed concrete composition according to the present invention, the water is characterized in that the soft water.

또, 본 발명에 따른 레미콘 조성물에 있어서, 상기 감수제는 PCA(poly carbonate acid)로서 상기 시멘트 양의 0.2∼0.8중량%가 첨가되는 것을 특징으로 한다.In addition, in the ready-mixed concrete composition according to the present invention, the water reducing agent is characterized in that 0.2 to 0.8% by weight of the cement amount is added as poly carbonate acid (PCA).

또, 본 발명에 따른 레미콘 조성물에 있어서, 상기 혼합물은 흄드 실리카 1∼5중량%와 후라이애쉬 3∼10중량%를 포함하는 것을 특징으로 한다.In addition, in the ready-mixed concrete composition according to the present invention, the mixture is characterized in that it comprises 1 to 5% by weight of fumed silica and 3 to 10% by weight of fry ash.

또한, 상기 목적을 달성하기 위한 본 발명에 따른 레미콘 제조 방법은 시멘트, 바텀애쉬 굵은 골재, 바텀애쉬 잔 골재 및 혼화재를 공급하는 각각의 사일로와, 물과 혼화제를 공급하는 각각의 탱크와, 상기 각각의 사일로와 상기 각각의 탱 크에서 공급하는 각각의 원료를 혼합하는 믹서를 이용한 레미콘 제조 방법에 있어서, 시멘트 25∼35중량%, 상기 바텀애쉬 굵은 골재와 바텀애쉬 잔 골재는 불특정의 함수비를 갖는 자연상태의 골재로서 바텀애쉬 굵은 골재 30∼50중량% 및 바텀애쉬 잔 골재 20∼35중량%, 혼화재 5∼15중량%를 공급하는 고형물 공급단계; 상기 고형물 공급단계에서 공급되는 상기 바텀애쉬 굵은 골재와 상기 바텀애쉬 잔골재로부터 바텀애쉬 골재들에 포함된 수분의 양을 측정하는 함수량 측정단계; 40∼50%의 물/시멘트 비의 범위에서 미리 설정된 물의 양에서 상기 함수량 측정단계에서 측정된 함수량을 제외한 물을 공급하는 물 공급단계; 혼화제를 공급하는 첨가제 공급단계; 상기 고형물, 물, 혼화제를 혼합하는 혼합단계; 를 포함하는 것을 특징으로 한다.In addition, the ready-mixed concrete manufacturing method according to the present invention for achieving the above object is a silo for supplying cement, bottom ash coarse aggregate, bottom ash fine aggregate and admixture, and each tank for supplying admixture with water, respectively In the ready-mixed concrete manufacturing method using a mixer for mixing the silo and each raw material supplied from the respective tanks, 25 to 35% by weight of cement, the bottom ash coarse aggregate and the bottom ash fine aggregate is a natural having an unspecified water content Solids supply step of supplying 30 to 50% by weight of bottom ash coarse aggregate, 20 to 35% by weight of bottom ash fine aggregate, and 5 to 15% by weight of admixture as aggregate in the state; A water content measuring step of measuring an amount of water contained in bottom ash aggregates from the bottom ash coarse aggregate and the bottom ash fine aggregate supplied in the solids supplying step; A water supply step of supplying water excluding the water content measured in the water content measurement step from a predetermined amount of water in the range of water / cement ratio of 40-50%; An additive supplying step of supplying a admixture; A mixing step of mixing the solid, water, and admixture; Characterized in that it comprises a.

또, 본 발명에 따른 레미콘 제조 방법에 있어서, 상기 혼화제는 감수제로서 상기 시멘트 양의 0.2∼0.8중량%를 공급하는 것을 특징으로 한다.Further, in the ready-mixed concrete manufacturing method according to the present invention, the admixture is characterized in that 0.2 to 0.8% by weight of the amount of the cement is supplied as a water reducing agent.

또, 본 발명에 따른 레미콘 제조 방법에 있어서, 상기 혼화재는 흄드 실리카 및 후라이애쉬인 것을 특징으로 한다.In addition, in the ready-mixed concrete manufacturing method according to the invention, the admixture is characterized in that the fumed silica and fry ash.

또, 본 발명에 따른 레미콘 제조 방법에 있어서, 상기 혼합된 레미콘은 슬럼프 10.0㎝±2.0, 공기량 3∼5% 및 28일 압축강도 300∼600㎏/㎠를 갖는 것을 특징으로 한다.In addition, in the ready-mixed concrete manufacturing method according to the present invention, the mixed ready-mixed concrete is characterized in that it has a slump of 10.0 cm ± 2.0, 3 to 5% air volume and 300 to 600 kg / ㎠ compressive strength for 28 days.

상술한 바와 같이, 본 발명에 따른 바텀애쉬 골재를 이용한 레미콘 조성물 및 그 제조 방법에 의하면, 석탄화력발전소에서 연간 약 100만톤이 매립장에 폐기되는 바텀애쉬를 골재(굵은골재, 잔골재)로 사용하여 레미콘을 대량 생산함으로써 폐기물을 재활용하는 효과가 얻어진다.As described above, according to the ready-mixed concrete composition using the bottom ash aggregate according to the present invention and a method for manufacturing the same, the ready-mixed bottom ash (coarse aggregate, fine aggregate) using bottom ash, which is about 1 million tons per year in landfills in coal-fired power plants By mass production of this, the effect of recycling the waste is obtained.

또한, 본 발명에 따른 바텀애쉬 골재를 이용한 레미콘 조성물 및 그 제조 방법에 의하면, 바텀애쉬를 골재로 사용함으로써, 고갈되어 가는 자연산 골재를 대체할 수 있는 효과도 있다.In addition, according to the ready-mixed concrete composition and the manufacturing method using the bottom ash aggregate according to the present invention, by using the bottom ash aggregate, there is an effect that can replace the natural aggregate that is depleted.

또한, 본 발명에 따른 바텀애쉬 골재를 이용한 레미콘 조성물 및 그 제조 방법에 의하면, 물/시멘트 비를 정확하게 제어함으로써, 레미콘의 물성을 향상시킬 수 있으며, 레미콘 수요자의 요구에 따르는 물성을 갖는 레미콘을 공급할 수 있는 효과도 있다.In addition, according to the ready-mixed concrete composition using the bottom ash aggregate according to the present invention and a method for manufacturing the same, by controlling the water / cement ratio accurately, it is possible to improve the properties of the ready-mixed concrete, supply a ready-mixed concrete having the properties according to the requirements of the ready-mixed concrete consumer There is also an effect.

또한, 본 발명에 따른 바텀애쉬 골재를 이용한 레미콘 조성물 및 그 제조 방법에 의하면, 물 대신 연수를 사용하는 경우에는 압축강도와 워커빌리티를 향상시킬 수 있으며, 레미콘의 응고시간을 단축시킬 수 있는 효과도 있다.In addition, according to the ready-mixed concrete composition and the manufacturing method using the bottom ash aggregate according to the present invention, when using soft water instead of water can improve the compressive strength and workability, there is also an effect that can shorten the solidification time of ready-mixed concrete. .

본 발명은 석탄화력발전소에서 발생되는 바텀애쉬를 분쇄, 사별하여 조골재의 최대 골재크기를 결정하고 잔골재 부분은 일반 하상 모래의 입도와 동일한 입도로 분급하여 사일로에 저장하여 일반 강도의 레미콘은 시멘트, 바텀애쉬 굵은 골재, 바텀애쉬 잔골재, 유동화제(감수제 등) 및 물을 혼합하여 생산하고, 고강도 레미콘은 시멘트, 고강도 혼화재(흄드 실리카, 후라이애쉬)와 시멘트/물 비를 조정하여 배처 플랜트의 믹서로 혼합하여 제조하는 방법을 사용하였다.The present invention is to determine the maximum aggregate size of coarse aggregate by crushing and sifting bottom ash generated from coal-fired power plant, and the fine aggregate portion is classified into the same particle size of ordinary bed sand and stored in silos, so that the ready-mixed concrete of concrete strength is bottom, Ash coarse aggregate, bottom ash fine aggregate, fluidizing agent (resining agent, etc.) and water are mixed, and high-strength ready mixed concrete is mixed with cement, high-strength admixture (fumed silica, fry ash) and cement / water ratio by mixer of batcher plant It was used to prepare a method.

이하, 본 발명을 상세히 설명한다.Hereinafter, the present invention will be described in detail.

본 발명의 레미콘 조성물에서 사용되는 시멘트는 일반 포트랜드시멘트, 속경성 CSA시멘트 등을 사용할 수 있다.The cement used in the ready-mixed concrete composition of the present invention may use general portland cement, fast-hard CSA cement, and the like.

고강도의 레미콘 제조를 위해 혼화재를 사용할 수 있으며, 그 혼화재는 금속 실리콘이나 페로실리콘 등의 실리콘 합금을 전기로 등에서 제조할 때에 부산물로서 발생되는 구형의 초미립자로 주성분이 SiO2 이며 입자크기는 약 1.5㎛이하인 흄드 실리카를 사용할 수 있고, 석탄화력발전소에서 발생되는 석탄연소 후 구형의 비산 회분으로 입자의 크기는 보일러의 연소조건 또는 포집방법에 따라 달라지나 보통 최대입자가 약 20㎛인 후라이애쉬를 사용할 수 있다. Admixtures can be used for the production of high-strength ready-mixed concrete, which is a spherical ultrafine particle that is produced as a by-product when a silicon alloy such as metal silicon or ferrosilicon is produced in an electric furnace, and has a main component of SiO 2 and a particle size of about 1.5㎛. Fumed silica below can be used, and spherical fly ash after coal combustion in coal-fired power plant. The size of the particles varies depending on the combustion conditions or the collection method of the boiler, but a frying ash with a maximum particle size of about 20㎛ can be used. have.

혼화재의 사용량은 시멘트 사용량의 1∼30중량% 범위에서 사용할 수 있다. 후라이애쉬는 입자의 크기에 따라 그 사용량이 달라질 수 있지만, 흄드 실리카와 후라이애쉬를 혼합하여 사용하는 경우에는 시멘트 사용량의 3∼15중량%를 사용하는 것이 바람직하고, 이때 흄드 실리카와 후라이애쉬는 흄드 실리카는 1∼5중량%, 후라이애쉬는 3∼10중량% 범위 내에서 사용하는 것이 바람직하다.The amount of the admixture can be used in the range of 1 to 30% by weight of the amount of cement used. The amount of the fried ash may vary depending on the size of the particles, but in the case of mixing the fumed silica and the fried ash, it is preferable to use 3 to 15% by weight of the cement, wherein the fumed silica and the fried ash are fumed Silica is preferably used in an amount of 1 to 5% by weight and frying ash in a range of 3 to 10% by weight.

흄드 실리카의 사용량을 증가시키면 콘크리트의 압축강도는 증가시킬 수 있으나 인장강도의 증가효과는 크지 않으며, 감수제와 병용할 경우 레미콘 조성물의 유동성을 증가시킬 수 있게 된다.Increasing the amount of fumed silica can increase the compressive strength of the concrete, but the effect of increasing the tensile strength is not great, and when used in combination with a water reducing agent can increase the fluidity of the ready-mixed concrete composition.

흄드 실리카의 사용량이 시멘트 사용량의 1중량%이하인 경우에는 압축강도의 증가효과가 크게 향상되지 않으며, 5%이상인 경우에는 유동성 향상이나 강도 증가 효과에 비교하여 경제성이 떨어지게 된다.If the amount of fumed silica is less than 1% by weight of cement, the effect of increasing the compressive strength is not significantly improved. If the amount of fumed silica is more than 5%, the economy is inferior to the effect of improving fluidity or increasing strength.

본 발명에 따른 레미콘 조성물 중에서 가장 중요한 역할을 담당하는 바텀애 쉬 골재는 화력발전소의 보일러에서 발생되는 석탄 연소 후 회분의 응결체로서 그 비중이 평균 2.0∼2.5이며 보일러 하부로 떨어지는 치밀한 유리질 혹은 다공성 무기물로서 전체 회분발생 양의 15∼20%정도이다. 발전소에서는 이 괴상의 회분을 크러셔로 분쇄하여 매립장에 매립한다.Bottom ash aggregate, which plays the most important role among ready-mixed concrete compositions according to the present invention, is a coagulant of ash generated after coal combustion generated in a boiler of a thermal power plant, and its specific gravity is 2.0 to 2.5, and dense glassy or porous inorganic material falls below the boiler. It is about 15 to 20% of the total ash generation. In power plants, this mass ash is crushed by crushers and landfilled in landfills.

이와 같은 바텀애쉬를 본 발명에 따른 레미콘 조성물 중의 골재로 사용하기 위해서 굵은 골재용으로 5∼30㎜, 잔골재용으로 5㎜이하로 분급 사별하여 구분한다.In order to use the bottom ash as an aggregate in the ready-mixed concrete composition according to the present invention, the classification is divided into 5-30 mm for coarse aggregates and 5 mm or less for fine aggregates.

본 발명에 따른 레미콘 조성물의 조성 비율은 굵은 골재 30∼50중량%, 잔골재 20∼35중량%, 시멘트 25∼35중량%, 슬럼프를 10.0㎝±2.0, 공기량을 3∼5%가 되도록 물/시멘트 비를 40∼50% 범위에서 조정하고, 필요로 하는 강도에 따라 감수제와 고강도 혼화재를 적량 혼합하여 표준 시방배합에 따른 레미콘을 제조하게 된다.The composition ratio of the ready-mixed concrete composition according to the present invention is 30 to 50% by weight of coarse aggregate, 20 to 35% by weight of fine aggregate, 25 to 35% by weight of cement, slump of 10.0 cm ± 2.0, and air amount of 3 to 5%. The ratio is adjusted in the range of 40 to 50%, and the reducing agent and the high strength admixture are appropriately mixed according to the required strength to prepare ready-mixed concrete according to the standard specification.

표 1은 상기한 바텀애쉬 굵은 골재의 입도분포를 나타낸 것이고, 표 2는 바텀애쉬 잔 골재의 입도분포를 나타낸 것이다.Table 1 shows the particle size distribution of the bottom ash coarse aggregate, Table 2 shows the particle size distribution of the bottom ash fine aggregate.

입도(㎜)Particle size (mm) 중량%weight% 누적중량%Cumulative weight% +30 30/20 20/15 15/10 10/5 -5+30 30/20 20/15 15/10 10/5 -5 5.0 21.5 15.0 23.5 33.5 1.55.0 21.5 15.0 23.5 33.5 1.5 5.0 26.5 41.5 65.0 98.5 100.05.0 26.5 41.5 65.0 98.5 100.0

입도(mesh)Particle size 중량%weight% 누적중량%Cumulative weight% +4 4/8 8/16 16/30 30/50 50/100 -100+4 4/8 8/16 16/30 30/50 50/100 -100 5.7 14.8 21.7 14.1 8.0 17.1 18.65.7 14.8 21.7 14.1 8.0 17.1 18.6 5.7 20.5 42.2 56.3 64.3 81.4 100.05.7 20.5 42.2 56.3 64.3 81.4 100.0

본 발명에 따른 레미콘 조성물에서 슬럼프 등의 물성 조정을 위한 감수제는 PCA(poly carbonate acid)를 사용하고, 시멘트양의 0.2∼0.8중량%를 첨가한다.In the ready-mixed concrete composition according to the present invention, a water reducing agent for adjusting physical properties such as slump is used using PCA (poly carbonate acid), and 0.2 to 0.8 wt% of the amount of cement is added.

이하에서는 상기와 같은 조성비를 갖는 본 발명에 따른 레미콘의 제조 방법에 대해 설명한다.Hereinafter, a manufacturing method of the ready-mixed concrete according to the present invention having the composition ratio as described above will be described.

도 1은 본 발명에 따른 바텀애쉬를 이용한 레미콘을 제조하기 위한 플랜트의 개념도이다.1 is a conceptual diagram of a plant for manufacturing ready-mixed concrete using bottom ash according to the present invention.

도 1에 있어서, 도면 부호 1 내지 4는 고형물인 바텀애쉬 굵은 골재, 바텀애쉬 잔 골재, 시멘트 및 혼화재를 저장하는 사일로이고, 도면 부호 5는 물을 공급하기 위한 물탱크이며, 도면 부호 6은 감수제를 공급하기 위한 감수제 탱크이다. 각각의 사일로와 각각의 탱크에는 이들에 저장된 원료를 계량하여 공급하기 위한 계량장치(M1∼M6)가 설치되어 있고, 각각의 사일로(1)(2)(3)(4)에는 사일로로부터 고형물이 원활히 공급될 수 있도록 진동기가 설치되어 있다.In Fig. 1, reference numerals 1 to 4 denote silos for storing bottom ash coarse aggregate, bottom ash fine aggregate, cement and admixture which are solids, reference numeral 5 denotes a water tank for supplying water, and reference numeral 6 denotes a water reducing agent. Reducing agent tank for supplying Each silo and each tank is provided with metering devices M1 to M6 for metering and supplying the raw materials stored therein, and each silo 1, 2, 3, 4 is provided with solids from the silo. The vibrator is installed to supply smoothly.

그리고 도면 부호 7은 물탱크(5)와 감수제 탱크(6)로부터 공급되는 물과 감수제를 혼합하는 혼합탱크이다. 혼합탱크(7)에도 물과 감수제의 혼합액을 계량하여 공급하기 위한 계량장치(M7)가 설치되어 있다.Reference numeral 7 denotes a mixing tank in which water supplied from the water tank 5 and the water reducing tank 6 is mixed with the water reducing agent. The mixing tank 7 is also provided with a metering device M7 for metering and supplying a mixed liquid of water and a water reducing agent.

사일로(1)(2)(3)(4)에서는 벨트 콘베이어(8)로 각각의 고형물 원료가 공급된다.In the silos 1, 2, 3, 4, the solids raw materials are fed to the belt conveyor 8.

도면 부호 S1과 S2는 바텀애쉬 굵은 골재와 바텀애쉬 잔골재에 함유된 함수량을 측정하기 위한 수분감지센서이다. 수분감지센서(S1)(S2)는 바텀애쉬 굵은 골재와 바텀애쉬 잔골재가 사일로(1)와 사일로(2)에서 벨트 콘베이어(8)로 각각 공급되는 과정에서 각각의 바텀애쉬 골재에 포함된 함수량에 대한 정보를 검출하게 된다.Reference numerals S1 and S2 are moisture detection sensors for measuring the water content contained in the bottom ash coarse aggregate and bottom ash fine aggregate. Moisture sensor (S1) (S2) is the bottom ash coarse aggregate and bottom ash aggregate aggregate is supplied to the water content contained in each bottom ash aggregate in the process of supplying the belt conveyor (8) from the silos (1) and silos (2), respectively To detect information about the system.

상술한 바텀애쉬 굵은 골재와 바텀애쉬 잔골재에 함유된 함수량에 대한 정보는 도 1에 의한 레미콘 제조 플랜트를 제어하는 도시되지 않은 제어 회로로 전달되고, 제어 회로에서는 함수량에 대한 정보를 이용하여 미리 저장되어 있는 물/시멘트 비에 의한 물의 양에서 바텀애쉬 골재들이 함유하고 있는 수분의 양을 뺀 물의 양을 산출하고, 그 산출된 물의 양만큼만 물탱크(5)에서 물을 공급하도록 물탱크(5)에 설치되어 있는 계량장치(M5)를 구동시킨다. 이와 같은 과정에 의해 바텀애쉬에 함유된 함수량과 물탱크(5)에서 공급되는 물은 필요로 하는 물/시멘트의 비에 의한 물의 양을 정확하게 공급하게 되어 레미콘의 물성 즉, 슬럼프, 공기량, 압축강도 등을 정확하게 제어할 수 있게 되고, 물/시멘트 비를 필요에 따라 조절함으로써, 레미콘 수요자가 원하는 물성(슬럼프, 공기량)에 맞추어 레미콘을 제조할 수도 있게 된다.The information on the water content contained in the bottom ash coarse aggregate and the bottom ash fine aggregate described above is transmitted to a control circuit (not shown) controlling the ready-mixed concrete manufacturing plant according to FIG. 1, and the control circuit is stored in advance using information on the water content. Calculate the amount of water minus the amount of water the bottom ash aggregate contains by the amount of water by the water / cement ratio present, and supply the water to the water tank 5 to supply water from the water tank 5 only by the calculated amount of water. The metering device M5 is driven. By this process, the water content contained in the bottom ash and the water supplied from the water tank 5 supply the amount of water by the ratio of water / cement needed, so that the properties of ready-mixed concrete, slump, air amount, and compressive strength It is possible to precisely control the back and the like, by adjusting the water / cement ratio as needed, the ready-mixed concrete can be manufactured according to the physical properties (slump, air amount) desired by the ready-mixed concrete consumer.

각각의 고형물 원료는 벨트 콘베이어(8)에 실려 드럼 믹서(9)로 공급되고, 물과 감수제 혼합액도 혼합탱크(7)에서 도시되지 않은 펌핑 장치에 의해 드럼 믹서(9)로 공급되어 고형물 원료와 액체 원료가 드럼 믹서(9)에서 혼합됨으로써 본 발명에 따른 레미콘이 제조된다.Each solid material is loaded on the belt conveyor 8 to the drum mixer 9, and the water and the reducing agent mixture are also supplied to the drum mixer 9 by a pumping device not shown in the mixing tank 7 to supply the solid material and The ready-mixed concrete according to the present invention is produced by mixing the liquid raw material in the drum mixer 9.

이와 같이 혼합 완료된 레미콘은 트럭(10)으로 출하한다.In this way, the mixed ready-mixed concrete is shipped to the truck 10.

이하에서는 본 발명에 따른 레미콘 조성물의 구체적인 실시형태를 실시예를 통하여 설명한다.Hereinafter, specific embodiments of the ready-mixed concrete composition according to the present invention will be described through examples.

[실시예]EXAMPLE

실시예 1 내지 9는 시멘트, 바텀애쉬 굵은 골재, 바텀애쉬 잔 골재, 혼화재인 흄드 실리카 및 후라이애쉬, 감수제 및 물을 표 3에 나타난 바와 같은 조성비율로 배합 혼합하여 레미콘의 표준 시방 배합하여 시편을 만들어 28일 양생 압축강도를 측정한 결과이다. 여기서 물/시멘트 비는 바텀애쉬 굵은 골재 및 바텀애쉬 잔 골재에 함유된 수분을 포함한 것으로서, 물/시멘트 비를 정확하게 유지하기 위해 바텀애쉬 굵은 골재 및 바텀애쉬 잔 골재에 함유된 수분을 측정하고, 물/시멘트 비에 따른 물의 양에서 바텀애쉬 골재들에 포함된 수분의 양을 뺀 나머지 양의 물을 공급하였다.Examples 1 to 9 are cement, bottom ash coarse aggregate, bottom ash fine aggregate, blended fumed silica and frying ash, water reducing agent, and water in the mixing ratio as shown in Table 3 by mixing the standard specifications of ready-mixed concrete specimens It is the result of measuring 28 days curing compressive strength. Here, the water / cement ratio includes the water contained in the bottom ash coarse aggregate and the bottom ash fine aggregate, to measure the water contained in the bottom ash coarse aggregate and the bottom ash fine aggregate to maintain the water / cement ratio accurately, The amount of water was subtracted from the amount of water according to the ratio of / cement, minus the amount of water contained in the bottom ash aggregates.

실시예 1 및 2는 혼화재를 사용하지 않은 것이고, 실시예 3 내지 5는 혼화재로서 후라이애쉬만을 사용한 것이며, 실시예 6 내지 9는 혼화재로서 흄드 실리카와 후라이애쉬를 사용한 것이다.Examples 1 and 2 do not use admixtures, Examples 3 to 5 use only frying ash as the admixture, and Examples 6 to 9 use fumed silica and frying ash as admixture.

이들의 실시예들은 표 3에서 보는 바와 같이 바텀애쉬 굵은 골재 조성비율 30∼42중량%, 바텀애쉬 잔 골재 조성비율(5㎜이하) 22∼35중량%, 시멘트 29∼33중량% 범위에서 각각 사용하였으며, 슬럼프 8.0∼10.0㎝, 공기량 3∼5%의 범위가 되도록 물/시멘트 비를 40∼50% 범위에서 각각 조정하고, 감수제와 고강도 혼화재를 필요로 하는 강도에 따라 적량 혼합하여 시편을 제조하였다.As shown in Table 3, these examples are used in the bottom ash coarse aggregate composition ratio of 30 to 42 wt%, the bottom ash fine aggregate composition ratio (less than 5 mm) of 22 to 35 wt%, and the cement 29 to 33 wt%, respectively. The specimens were prepared by adjusting the water / cement ratio in the range of 40 to 50% so as to have a slump of 8.0 to 10.0 cm and an air content of 3 to 5%, and appropriately mixing the water reducing agent and the high strength admixture according to the strength required. .

구 분  division 레미콘 조성물 및 배합비율(중량%)Ready-mixed concrete composition and compounding ratio (% by weight) 레미콘 물성Ready-mixed concrete 시멘트 cement 긁은 골재Scraped aggregate 잔골 재Fine ash 흉드 실리카Breasted silica 후라이 애쉬Fry Ash 감수제 (PCA)Reducing Agent (PCA) 물/ 시멘트Water / cement 슬럼프 slump 공기량 (%)Air volume (%) 압축강도 (㎏/㎠)Compressive strength (㎏ / ㎠) 실시예1Example 1 3030 4242 2828 -- -- 0.250.25 5050 1010 55 320320 실시예2Example 2 3535 4343 2222 -- -- 0.250.25 5050 1010 55 370370 실시예3Example 3 3030 3737 3030 -- 3 3 0.550.55 4040 88 33 400400 실시예4Example 4 3030 3434 3030 -- 6 6 0.500.50 4040 88 33 420420 실시예5Example 5 3030 3030 3030 -- 1010 0.500.50 4040 88 33 450450 실시예6Example 6 3333 3535 2525 1One 6 6 0.750.75 4040 88 33 450450 실시예7Example 7 3232 2525 3535 22 6 6 0.750.75 4040 88 33 470470 실시예8Example 8 3131 3030 3030 33 6 6 0.750.75 4040 88 33 490490 실시예9Example 9 2929 3030 3030 55 6 6 0.750.75 4040 88 33 530530

* 감수제 : 시멘트량에 대한 첨가량* Reducing agent: Addition amount to cement amount

[비교예][Comparative Example]

비교예는 상기 실시예와 동일한 방법으로 시편을 제조하였고, 골재는 자연산 골재로 분쇄자갈 또는 하상 모래를 사용하였다.Comparative Example was prepared in the same manner as in the above Example, the aggregate was used as natural aggregates crushed gravel or bed sand.

구 분  division 레미콘 조성물 및 배합비율(중량%)Ready-mixed concrete composition and compounding ratio (% by weight) 레미콘 물성Ready-mixed concrete 시멘트 cement 긁은 골재Scraped aggregate 잔골 재Fine ash 흉드 실리카Breasted silica 후라이 애쉬Fry Ash 감수제 (PCA)Reducing Agent (PCA) 물/ 시멘트Water / cement 슬럼프 slump 공기량 (%)Air volume (%) 압축강도 (㎏/㎠)Compressive strength (㎏ / ㎠) 비교예1Comparative Example 1 3030 4242 2828 -- -- 0.250.25 5050 1010 55 330330 비교예2Comparative Example 2 3535 4343 2222 -- -- 0.250.25 5050 1010 55 380380

* 감수제 : 시멘트량에 대한 첨가량* Reducing agent: Addition amount to cement amount

본 발명의 실시예에 의한 시편은 물/시멘트 비를 정확하게 유지시켜 주면 비교예의 자연산 골재를 사용한 경우와 동일한 정도의 압축강도를 얻을 수 있음을 알 수 있고, 고강도의 레미콘이 필요한 경우에는 각종의 혼화재(흄드 실리카, 후라이애쉬)와 감수제를 첨가함으로써, 수요자가 원하는 레미콘 물성을 얻을 수 있음을 알 수 있다.When the specimen according to the embodiment of the present invention maintains the water / cement ratio accurately, it can be seen that the same compressive strength as the case of using the natural aggregate of the comparative example can be obtained, and when a high strength ready-mixed concrete is needed, various mixed materials By adding (fumed silica, frying ash) and a water reducing agent, it can be seen that the desired concrete properties can be obtained by the consumer.

상기 실시예에서는 일반적인 물(경수)을 사용하였지만, 연수를 사용하여 물/시멘트 비를 맞춘 경우에는 시멘트의 알칼리 성분을 감소시킬 수 있으므로 워거빌리티를 향상시킬 수 있고, 물(연수) 사용량을 줄임으로써 압축강도를 향상시킬 수 있었으며, 시편 제작시에는 응고시간이 단축되는 것을 확인하였다.In the above embodiment, although general water (hard water) is used, when the water / cement ratio is adjusted by using soft water, the alkali component of the cement can be reduced, thereby improving the durability and reducing the water (soft water) usage. Compressive strength could be improved and solidification time was shortened when specimen was produced.

본 발명의 바텀애쉬 골재를 이용한 레미콘 조성물은 일반 자연산 골재나 쇄석 골재를 사용한 레미콘과 비교하여 그 성능의 차이가 없고, 단위 부피당의 무게가 자연산 골재보다 가벼우므로 건물의 바닥재 콘크리트로 사용하면 상대적인 하중의 경감을 얻을 수 있는 이점이 있다.The ready-mixed concrete composition using the bottom ash aggregate of the present invention has no difference in performance compared to the ready-mixed concrete using natural aggregates or crushed aggregates, and the weight per unit volume is lighter than that of natural aggregates. There is an advantage that can be obtained.

도 1은 본 발명에 따른 바텀애쉬를 이용한 레미콘을 제조하기 위한 플랜트의 개념도1 is a conceptual diagram of a plant for manufacturing ready-mixed concrete using bottom ash according to the present invention

*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

1 : 굵은 골재 사일로 2 : 잔 골재 사일로1: coarse aggregate silo 2: fine aggregate silo

3 : 시멘트 사일로 5 : 물탱크3: cement silo 5: water tank

9 : 믹서 10 : 펌핑 트럭9: mixer 10: pumping truck

M1∼M7 : 계량장치 S1, S2 : 수분감지센서M1 ~ M7: Weighing device S1, S2: Moisture sensor

Claims (8)

물, 시멘트, 골재를 배합하여 제조되는 레미콘 조성물에 있어서,In the ready-mixed concrete composition prepared by mixing water, cement, aggregate, 상기 레미콘 조성물은 시멘트 25∼35중량%, 불특정의 함수비를 갖는 자연상태의 바텀애쉬 굵은 골재 30∼50중량% 및 바텀애쉬 잔 골재 20∼35중량%, 감수제가 첨가된 혼합물에 물을 첨가하되, 상기 레미콘의 제조 장치에 마련된 수분측정 장치에 의해 상기 골재에 함유된 함수량을 측정하고, 물/시멘트 비가 40∼50%의 범위에서 유지되도록 상기 레미콘의 제조 장치는 상기 측정된 함수량을 제외한 물을 공급하고 혼합하여 슬럼프 10.0㎝±2.0, 공기량 3∼5% 및 28일 압축강도 300∼600㎏/㎠가 되도록 제조되는 것을 특징으로 하는 레미콘 조성물.The ready-mixed concrete composition is 25 to 35% by weight of cement, 30 to 50% by weight of the natural bottom ash coarse aggregate having an unspecified water content and 20 to 35% by weight of bottom ash fine aggregate, water is added to the mixture is added, The moisture content contained in the aggregate is measured by a moisture measuring device provided in the production apparatus of the ready-mixed concrete, and the manufacturing apparatus of the ready-mixed concrete is supplied water except the measured water content so that the water / cement ratio is maintained in the range of 40-50% And mixed to prepare a slump of 10.0 cm ± 2.0, the amount of air 3 to 5% and 28 days compressive strength of 300 to 600 kg / ㎠. 제 1항에 있어서,The method of claim 1, 상기 물은 연수인 것을 특징으로 하는 레미콘 조성물.The ready-mixed concrete composition, characterized in that the water is soft water. 제 1항에 있어서,The method of claim 1, 상기 감수제는 PCA(poly carbonate acid)로서 상기 시멘트 양의 0.2∼0.8중량%가 첨가되는 것을 특징으로 하는 레미콘 조성물.The reducing agent is a ready-mixed concrete composition, characterized in that 0.2 to 0.8% by weight of the cement amount is added as poly carbonate acid (PCA). 제 1항에 있어서,The method of claim 1, 상기 혼합물은 흄드 실리카 1∼5중량%와 후라이애쉬 3∼10중량%를 포함하는 것을 특징으로 하는 레미콘 조성물.The mixture is a ready-mixed concrete composition, characterized in that it comprises 1 to 5% by weight of fumed silica and 3 to 10% by weight of fry ash. 시멘트, 바텀애쉬 굵은 골재, 바텀애쉬 잔 골재 및 혼화재를 공급하는 각각의 사일로와, 물과 혼화제를 공급하는 각각의 탱크와, 상기 각각의 사일로와 상기 각각의 탱크에서 공급하는 각각의 원료를 혼합하는 믹서를 이용한 레미콘 제조 방법에 있어서,Mixing each silo supplying cement, bottom ash coarse aggregate, bottom ash fine aggregate and admixture, each tank supplying water and admixture, and each raw material supplied from each silo and each tank In the ready-mixed concrete manufacturing method using a mixer, 시멘트 25∼35중량%, 상기 바텀애쉬 굵은 골재와 바텀애쉬 잔골재는 불특정의 함수비를 갖는 자연상태의 골재로서 바텀애쉬 굵은 골재 30∼50중량% 및 바텀애쉬 잔골재 20∼35중량%, 혼화재 5∼15중량%를 공급하는 고형물 공급단계;25 to 35% by weight cement, the bottom ash coarse aggregate and bottom ash fine aggregate is a natural aggregate having an unspecified water content, the bottom ash coarse aggregate 30 to 50% by weight and bottom ash fine aggregate 20 to 35% by weight, admixture 5 to 15 A solid supply step of supplying a weight%; 상기 고형물 공급단계에서 공급되는 상기 바텀애쉬 굵은 골재와 상기 바텀애쉬 잔골재로부터 바텀애쉬 골재들에 포함된 수분의 양을 측정하는 함수량 측정단계;A water content measuring step of measuring an amount of water contained in bottom ash aggregates from the bottom ash coarse aggregate and the bottom ash fine aggregate supplied in the solids supplying step; 40∼50%의 물/시멘트 비의 범위에서 미리 설정된 물의 양에서 상기 함수량 측정단계에서 측정된 함수량을 제외한 물을 공급하는 물 공급단계;A water supply step of supplying water excluding the water content measured in the water content measurement step from a predetermined amount of water in the range of water / cement ratio of 40-50%; 혼화제를 공급하는 첨가제 공급단계;An additive supplying step of supplying a admixture; 상기 고형물, 물, 혼화제를 혼합하는 혼합단계;A mixing step of mixing the solid, water, and admixture; 를 포함하는 것을 특징으로 하는 바텀애쉬를 이용한 레미콘 제조 방법.Ready-mixed concrete manufacturing method using a bottom ash, characterized in that it comprises a. 제 5항에 있어서,The method of claim 5, 상기 혼화제는 감수제로서 상기 시멘트 양의 0.2∼0.8중량%를 공급하는 것을 특징으로 하는 바텀애쉬를 이용한 레미콘 제조 방법.The admixture is a ready-mixed concrete manufacturing method using a bottom ash, characterized in that to supply 0.2 to 0.8% by weight of the cement amount as a water reducing agent. 제 5항에 있어서,The method of claim 5, 상기 혼화재는 흄드 실리카 및 후라이애쉬인 것을 특징으로 하는 바텀애쉬를 이용한 레미콘 제조 방법. The admixture is a ready-mixed concrete manufacturing method using bottom ash, characterized in that the fumed silica and fry ash. 제 5항 내지 제 7항 중 어느 한 항에 있어서,The method according to any one of claims 5 to 7, 상기 혼합된 레미콘은 슬럼프 10.0㎝±2.0, 공기량 3∼5% 및 28일 압축강도 300∼600㎏/㎠를 갖는 것을 특징으로 하는 바텀애쉬를 이용한 레미콘 제조 방법.The mixed ready-mixed concrete prepared by using a bottom ash, characterized in that it has a slump of 10.0 cm ± 2.0, the amount of air 3 to 5% and 28 days compressive strength 300 to 600 kg / ㎠.
KR20080040061A 2008-04-29 2008-04-29 Ready-mixed concrete composition using bottom ash aggregate and its manufacturing method Expired - Fee Related KR100946237B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR20080040061A KR100946237B1 (en) 2008-04-29 2008-04-29 Ready-mixed concrete composition using bottom ash aggregate and its manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR20080040061A KR100946237B1 (en) 2008-04-29 2008-04-29 Ready-mixed concrete composition using bottom ash aggregate and its manufacturing method

Publications (2)

Publication Number Publication Date
KR20090114231A true KR20090114231A (en) 2009-11-03
KR100946237B1 KR100946237B1 (en) 2010-03-09

Family

ID=41555485

Family Applications (1)

Application Number Title Priority Date Filing Date
KR20080040061A Expired - Fee Related KR100946237B1 (en) 2008-04-29 2008-04-29 Ready-mixed concrete composition using bottom ash aggregate and its manufacturing method

Country Status (1)

Country Link
KR (1) KR100946237B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PT107170A (en) * 2013-09-20 2015-03-20 Inst Politécnico De Setúbal CONCRETE AND MORTARS, THEIR METHOD OF OBTAINING AND USING
CN117164381A (en) * 2023-08-31 2023-12-05 中建商品混凝土有限公司 Low-carbon foam concrete based on coal-based ash and regenerated micro powder and preparation method thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102155825B1 (en) * 2014-02-13 2020-09-14 강원대학교산학협력단 The high-performance or fast hardening concrete and manufacturing method thereof
KR20190023410A (en) 2017-08-29 2019-03-08 유연표 Manufacturing method of bottom ash and bottom thereby the same that

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100470676B1 (en) 2002-01-28 2005-03-08 한국후라이애쉬시멘트공업(주) Concrete composition using of bottom ash as replacement of aggregate for concrete mixing
KR100526037B1 (en) * 2003-06-28 2005-11-08 한국후라이애쉬시멘트공업(주) Concret compositions having high compression intensity by using bottom-ash
KR20050003714A (en) * 2003-07-04 2005-01-12 한국후라이애쉬시멘트공업(주) Harbor and coastal structures for using bottom ash as replacement of aggregate for concrete mixing
KR100660386B1 (en) 2004-02-17 2006-12-21 한국후라이애쉬시멘트공업(주) High-performance concrete composition using bottom ash, its concrete product and method of manufacturing the product

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PT107170A (en) * 2013-09-20 2015-03-20 Inst Politécnico De Setúbal CONCRETE AND MORTARS, THEIR METHOD OF OBTAINING AND USING
CN117164381A (en) * 2023-08-31 2023-12-05 中建商品混凝土有限公司 Low-carbon foam concrete based on coal-based ash and regenerated micro powder and preparation method thereof

Also Published As

Publication number Publication date
KR100946237B1 (en) 2010-03-09

Similar Documents

Publication Publication Date Title
Popovics Concrete materials: Properties, specifications, and testing
US20220106227A1 (en) Modification of properties of pozzolanic materials through blending
KR101247707B1 (en) Additive for cement, mortar and concrete comprising ferronickel slag
US9067824B1 (en) Modification of pozzolanic chemistry through blending
Assaad et al. Valorizing the use of recycled fine aggregates in masonry cement production
KR20140134693A (en) Method for manufacturing of supplementary cementitious materials (scms)
Patil et al. Effect of copper slag and granite dust as sand replacement on the properties of concrete
KR101001310B1 (en) Plant for manufacturing ready-mixed concrete using bottom ash aggregate and its manufacturing method
KR100946237B1 (en) Ready-mixed concrete composition using bottom ash aggregate and its manufacturing method
CN113754331A (en) Red mud-based cementing material and preparation method and application thereof
Assaad et al. Limestone replacements by fine crushed concrete and ceramic wastes during the production of Portland cement
EP2087946A1 (en) Process for producing granular solid matter from coal ash as raw material and apparatus therefor
JP2008037685A (en) Cement additive and cement composition
EP2085366A2 (en) Method for producing hydraulic binding agent in a form of activated fly ash, activated fly ash, hydraulic binding agent, sulfur or cement concrete, mineral-asphalt mixture and application of the activated fly ash
JP2015009993A (en) Method for producing high-strength mortar composition
McKenna et al. Ceramic waste sludge as a partial cement replacement.
Amartey et al. Mechanical properties of palm kernel shell ash blended cement concrete
KR100668953B1 (en) Precision, Compressive Strength, Slump Compensation Method of Concrete Using Landfill Coal
Rahmawati et al. The effects of substitution of the natural sand by steel slag in the properties of eco-friendly concrete with the 1: 2: 3 ratio mixing method
KR100862917B1 (en) Cement clinker and cement manufacturing method using LCD waste glass, LCD waste glass cement manufactured by the method
Rajendran et al. Self–compacting concrete made with partial replacement of lime stone and quarry dust powder
Junior et al. Strength characteristics of concrete partially replaced with glass powder and palm kernel shells
Choi et al. A study on the strength properties and life cycle assessment of recycled fine aggregate concrete
JP4984112B2 (en) Cement-based filling solidification material
Elinwa et al. Characteristics of polyvinyl chloride powder cement paste and concrete

Legal Events

Date Code Title Description
A201 Request for examination
PA0109 Patent application

Patent event code: PA01091R01D

Comment text: Patent Application

Patent event date: 20080429

PA0201 Request for examination
E902 Notification of reason for refusal
PE0902 Notice of grounds for rejection

Comment text: Notification of reason for refusal

Patent event date: 20090615

Patent event code: PE09021S01D

PG1501 Laying open of application
E701 Decision to grant or registration of patent right
PE0701 Decision of registration

Patent event code: PE07011S01D

Comment text: Decision to Grant Registration

Patent event date: 20100111

GRNT Written decision to grant
PR0701 Registration of establishment

Comment text: Registration of Establishment

Patent event date: 20100302

Patent event code: PR07011E01D

PR1002 Payment of registration fee

Payment date: 20100303

End annual number: 3

Start annual number: 1

PG1601 Publication of registration
FPAY Annual fee payment

Payment date: 20130304

Year of fee payment: 4

PR1001 Payment of annual fee

Payment date: 20130304

Start annual number: 4

End annual number: 4

FPAY Annual fee payment

Payment date: 20150211

Year of fee payment: 6

PR1001 Payment of annual fee

Payment date: 20150211

Start annual number: 6

End annual number: 6

FPAY Annual fee payment

Payment date: 20160609

Year of fee payment: 7

PR1001 Payment of annual fee

Payment date: 20160609

Start annual number: 7

End annual number: 7

FPAY Annual fee payment

Payment date: 20170904

Year of fee payment: 8

PR1001 Payment of annual fee

Payment date: 20170904

Start annual number: 8

End annual number: 8

FPAY Annual fee payment

Payment date: 20180329

Year of fee payment: 9

PR1001 Payment of annual fee

Payment date: 20180329

Start annual number: 9

End annual number: 9

LAPS Lapse due to unpaid annual fee
PC1903 Unpaid annual fee

Termination category: Default of registration fee

Termination date: 20191213