KR100834856B1 - Manufacturing method of composition using waste concrete and its composition - Google Patents

Manufacturing method of composition using waste concrete and its composition Download PDF

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KR100834856B1
KR100834856B1 KR20070019104A KR20070019104A KR100834856B1 KR 100834856 B1 KR100834856 B1 KR 100834856B1 KR 20070019104 A KR20070019104 A KR 20070019104A KR 20070019104 A KR20070019104 A KR 20070019104A KR 100834856 B1 KR100834856 B1 KR 100834856B1
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South Korea
Prior art keywords
waste concrete
stone powder
composition
silo
powder
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KR20070019104A
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Korean (ko)
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최헌근
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최헌근
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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
    • 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
    • C04B18/16—Waste materials; Refuse from building or ceramic industry
    • C04B18/167—Recycled materials, i.e. waste materials reused in the production of the same materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/10—Mixing in containers not actuated to effect the mixing
    • B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/0007—Pretreatment of the ingredients, e.g. by heating, sorting, grading, drying, disintegrating; Preventing generation of dust
    • 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
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02—Treatment
    • C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Civil Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

A manufacturing method of aggregate composition is provided to recycle waste concrete for the environment and to reduce the cost for construction by employing recycled sand from waste concrete. A manufacturing method of aggregate composition comprises steps of: preparing recycled sand by grinding waste concrete and stone powder which are separated from foreign matters in a beater until the particle size of the material reaches 0.3-3mm; and mixing 50% by weight of waste concrete, 30% by weight of stone powder and cement particle for the remnant. The recycled sand is prepared in a process comprising steps of: grinding waste concrete and stone powder in a beater until the particle size reaches 0.3-3mm; sieving the ground waste concrete and stone powder through reciprocating screen having sieve of at most 3mm in order to separate the ground waste concrete and stone powder having particle size of 0.3-3mm under the reciprocating screen; transporting the separated particles on a belt conveyer in order to store in the primary silo while returning the particles bigger than 3mm to the beater for grinding. The recycled sand in the primary silo and cement powder in a secondary silo are both transported to a stirrer by means of a transporter for mixing.

Description

폐콘크리트를 이용한 조성물의 제조방법 및 그 조성물{Manufacturing method of composition using waste concrete and its composition}Manufacturing method of composition using waste concrete and its composition {Manufacturing method of composition using waste concrete and its composition}

도 1은 본 발명의 일실시예에 따른 공정도.1 is a process chart according to an embodiment of the present invention.

본 발명은 각종 건축공사시 발생하는 폐콘크리트를 이용하여 재생모래를 제조하고 여기에 적정비율의 시멘트 가루를 첨가 혼합하여 천연골재를 대체할 수 있는 조성물을 제조함으로써, 건설업계의 심각한 골재난을 해결함은 물론 건설자재 상승에 따른 건축비 상승을 막고 건축비를 획기적으로 낮출 수 있도록 한 폐콘크리트를 이용한 조성물의 제조방법 및 그 조성물에 관한 것이다.The present invention solves the severe aggregate problems in the construction industry by producing a composition that can replace the natural aggregate by producing recycled sand using waste concrete generated during various construction work and by adding and mixing the cement powder in an appropriate ratio Of course, the present invention relates to a method for producing a composition using waste concrete and to prevent the increase in construction costs due to the rise of construction materials and to significantly lower the construction cost.

최근 토목공사, 각종 건설공사시 양질의 골재 확보의 어려움으로 인해 공사기간 지연 및 공사경비 증가로 각 건설업체들의 어려움이 가중되고 있다.Recently, due to the difficulty in securing high-quality aggregates in civil engineering and various construction projects, the difficulty of each construction company is increasing due to delays in construction period and increased construction cost.

그리고 이러한 건설업체의 골재 확보의 어려움은 무분별한 석산 개발, 하천, 해상의 골재채취로 이어지고 있는 실정이다.In addition, the difficulty of securing the aggregate of such construction companies is leading to the indiscriminate development of quarries, rivers, and marine aggregates.

그러나 무분별한 석산 개발은 지반침하 및 토사붕괴 등 환경파괴를 가져오고, 하천 및 해상의 무분별한 골재 채취는 주변 지역의 수질 악화는 물론 식물성 플랑크톤, 어류 등의 개체수를 감소시키며, 강바닥 진흙층을 휘젓는 작업공정으로 인해 물속 탁도(濁度·흐린 정도)를 증가시키는 한편 바닥에 붙어있는 오염물질까지 방출시키는 환경 파괴의 요인이 되고 있다.However, the indiscriminate development of quarries leads to environmental degradation such as ground subsidence and soil disintegration. Indiscriminate collection of rivers and seas reduces the quality of surrounding areas, reduces the number of phytoplankton, fish, etc. This increases the turbidity in the water and releases pollutants on the floor, causing environmental damage.

따라서, 당업계에서는 무분별한 석산 개발이나 하천, 해상 등의 골재 채취로 인한 자연환경 훼손을 방지할 수 있는 대안으로 떠오르고 있는 재생골재의 기술 개발이 시급한 실정이다.Therefore, there is an urgent need in the art for the development of recycled aggregate technology, which has emerged as an alternative to prevent damage to the natural environment due to indiscriminate development of quarries or collection of rivers, seas, and the like.

본 발명은 상기와 같은 문제점을 해결하기 위해 안출된 것으로, 본 발명의 목적은, 각종 건축공사시 발생하는 폐콘크리트를 이용하여 재생모래를 제조하고 여기에 적당량의 시멘트 가루를 혼합하여 천연골재를 대체할 수 있는 조성물을 생산함으로써, 건설자재 상승에 따른 건축비 상승을 막을 수 있도록 한 폐콘크리트를 이용한 조성물의 제조방법 및 그 조성물을 제공함에 그 목적이 있다.The present invention has been made to solve the above problems, an object of the present invention is to produce recycled sand using waste concrete generated during various construction work and to replace the natural aggregate by mixing an appropriate amount of cement powder It is an object of the present invention to provide a method for producing a composition using waste concrete and a composition for preventing the increase in construction cost due to the construction material rise by producing a composition that can be.

상기와 같은 기술적 과제를 해결하기 위해 본 발명의 폐콘크리트를 이용한 조성물의 제조방법은, (1) 폐콘크리트 및 석분을 수거하여 이물질 제거한 다음 파쇄기에 넣고 0.3~3㎜ 크기로 분쇄하여 재생모래를 생산하는 재생모래 생산과정과; (2) 폐콘크리트 50중량%, 석분 30중량%에 나머지 시멘트 가루를 잔부로 하여 천연골재를 대체하는 조성물을 제조하는 혼합과정을; 포함하여 이루어짐을 특징으로 한다.In order to solve the technical problems as described above, the method for producing a composition using the waste concrete of the present invention, (1) to collect the waste concrete and stone powder to remove foreign substances and then put into the crusher to produce a reclaimed sand by grinding to 0.3 ~ 3㎜ size Recycled sand production process; (2) 50% by weight of waste concrete, 30% by weight of stone powder, the remaining mixture of cement powder to produce a composition for replacing the natural aggregate; It is characterized by including the.

또한, 상기 재생모래 생산과정은, 폐콘크리트 및 석분을 파쇄기에 넣어 0.3~3㎜ 크기로 분쇄하고, 이 분쇄된 폐콘크리트 및 석분을 3mm 이하의 그물눈을 가진 진동스크린에 투입하여 0.3~3mm 크기로 분쇄된 폐콘크리트 및 석분은 진동스크린의 아래로 떨어지게 한 다음 벨트컨베이어로 이송하여 제1사일로에 저장하고 진동스크린 그물눈을 통과하지 못한 3㎜를 초과하는 폐콘크리트 및 석분은 다시 파쇄기로 재투입하여 0.3~3㎜ 크기로 분쇄한 후 제1사일로에 저장함을 특징으로 한다.In addition, in the regeneration sand production process, the waste concrete and stone powder is put into a crusher and crushed into 0.3 ~ 3mm size, and the crushed waste concrete and stone powder is put into a vibration screen having a mesh of 3mm or less to 0.3 ~ 3mm size. The pulverized waste concrete and stone powder fall to the bottom of the vibrating screen, and then transferred to the belt conveyor to be stored in the first silo. After crushing to a size 3 ~ characterized in that the storage in the first silo.

또한, 상기 혼합과정은, 제1사일로에 저장된 폐콘크리트 및 석분으로 이루어진 재생모래와 제2사일로에 저장된 시멘트 가루를 스크루컨베이어에 의해 교반기로 이송하여 교반기에서 혼합함을 특징으로 한다.In addition, the mixing process, characterized in that the recycled sand consisting of waste concrete and stone powder stored in the first silo and cement powder stored in the second silo are transferred to the stirrer by a screw conveyor and mixed in the stirrer.

또한, 폐콘크리트를 이용한 조성물은 (1) 폐콘크리트 및 석분을 수거하여 이물질 제거한 다음 파쇄기에 넣고 0.3~3㎜ 크기로 분쇄하여 재생모래를 생산하는 재생모래 생산과정과; (2) 폐콘크리트 50중량%, 석분 30중량%에 나머지 시멘트 가루를 잔부로 하여 천연골재를 대체하는 조성물을 제조하는 혼합과정을; 포함하여 이 루어짐을 특징으로 한다.In addition, the composition using the waste concrete is (1) the process of producing recycled sand to collect the waste concrete and stone powder to remove foreign substances and then put into the crusher to grind to 0.3 ~ 3㎜ size to produce the reclaimed sand; (2) 50% by weight of waste concrete, 30% by weight of stone powder, the remaining mixture of cement powder to produce a composition for replacing the natural aggregate; It is characterized by including this.

이하 첨부되는 도면을 참조하여 본 발명의 폐콘크리트를 이용한 조성물의 제조방법 및 그 조성물에 대해 설명하기로 한다.Hereinafter, a method for preparing a composition using the waste concrete of the present invention and a composition thereof will be described with reference to the accompanying drawings.

1) 재생모래 생산과정1) Recycled sand production process

각종 건설공사시 발생하는 폐콘크리트 및 석분을 수거하여 이물질을 제거한 다음 이물질이 제거된 폐콘크리트 및 석분을 파쇄기에 넣고 일정 크기로 분쇄한다.Waste concrete and stone powder generated during various construction works are collected to remove foreign substances, and then the waste concrete and stone powder from which foreign substances are removed are put in a crusher and crushed to a certain size.

이때, 파쇄되는 폐콘크리트 및 석분은 0.3~3㎜ 크기로 분쇄되며, 분쇄된 다음에는 3㎜ 이하의 그물눈을 가진 진동스크린에 투입되어 선별작업을 통해 0.3~3mm 크기의 폐콘크리트 및 석분은 제1사일로(silo)에 저장되고, 3㎜ 이상의 폐콘크리트 및 석분은 다시 파쇄기로 보내져 재분쇄과정을 통해 0.3~3㎜ 크기가 되면 제1사일로 보내지게 된다.At this time, the crushed waste concrete and stone powder is crushed into 0.3 ~ 3㎜ size, and after being crushed is put into a vibrating screen having a mesh of less than 3mm and the waste concrete and stone powder of 0.3 ~ 3mm size through the sorting operation is the first Stored in a silo, waste concrete and stone powder of 3 mm or more are sent back to the crusher to be sent to the first silo when the size is 0.3 to 3 mm through the regrinding process.

즉, 선별작업에 사용되는 진동스크린은 3㎜ 이하의 그물눈을 가지기 때문에 0.3~3㎜ 크기의 폐콘크리트 및 석분은 그물망을 통과하여 그물망 아래로 떨어지고, 3㎜를 초과하는 크기의 폐콘크리트 및 석분은 그물눈을 통과하지 못하고 그물눈 위에 남게 된다.That is, since the vibrating screen used for screening has a mesh of 3 mm or less, waste concrete and stone powder having a size of 0.3 to 3 mm pass through the mesh and fall below the mesh, and waste concrete and stone powder having a size exceeding 3 mm It can't pass through the eye and remains on the eye.

따라서, 진동스크린의 아래로 떨어진 0.3~3㎜ 크기의 폐콘크리트 및 석분은 벨트컨베이어에 의해 제1사일로로 이동되고, 진동스크린 위에 남은 3㎜를 초과하는 크기의 폐콘크리트 및 석분은 벨트컨베이어를 따라 다시 파쇄기로 재투입되어 0.3~3mm 크기로 재분쇄된 후 제1사일로에 저장된다.Therefore, the waste concrete and stone powder having a size of 0.3 to 3 mm dropped below the vibrating screen is moved to the first silo by the belt conveyor, and the waste concrete and stone powder having a size exceeding 3 mm remaining on the vibrating screen along the belt conveyor. It is re-injected into the crusher and regrind into 0.3 ~ 3mm size and stored in the first silo.

이와 같이 0.3~3㎜의 미세한 크기로 분쇄된 폐콘크리트 및 석분은 천연모래를 대체하는 재생모래로 사용된다.As such, waste concrete and stone powder ground to a fine size of 0.3 to 3 mm are used as reclaimed sand to replace natural sand.

2) 시멘트 혼합과정2) Cement Mixing Process

이 과정은 폐콘크리트 및 석분을 0.3~3㎜ 크기로 분쇄하여 얻은 재생모래에 시멘트 가루를 혼합하여 천연골재를 대체할 수 있는 조성물을 제조하는 과정으로서, 스크루컨베이어에 의해 제1사일로에 저장된 재생모래와 제2사일로에 저장된 시멘트 가루는 교반기로 이동된다.This process is a process for producing a composition that can replace natural aggregate by mixing cement powder with recycled sand obtained by crushing waste concrete and stone powder to the size of 0.3 ~ 3㎜, recycled sand stored in the first silo by screw conveyor And cement powder stored in the second silo is moved to the stirrer.

이때, 재생모래와 시멘트 가루의 혼합비는 폐콘크리트 50중량%와, 석분 30중량%에 나머지 시멘트 가루를 잔부로 하여 교반기에서 혼합된다.At this time, the mixing ratio of the reclaimed sand and the cement powder is mixed in a stirrer with 50% by weight of waste concrete and 30% by weight of stone powder as the remainder of the remaining cement powder.

상기와 같은 과정을 거친 천연골재 대체용 조성물을 현장 작업자들에게 직접 사용해 보도록 한 결과 고강도를 요구하는 건축물 축조에 사용하기보다는 건축 공사에서 벽이나 천장, 바닥 따위에 흙이나 회, 시멘트 따위를 바르는 미장작업에 적합한 것으로 판단되었고, 상기 재생모래와 시멘트 가루의 혼합으로 이루어진 조성물을 사용한 콘크리트 기둥의 압축강도를 시험해 본 결과 국가공인기준 1만 6400kg 이상으로 나타났으며, 천연모래의 가격 대비 30% 이상 저렴한 가격으로 재생모래의 생산이 가능할 것으로 판단되었다.As a result of directing the field workers to use the composition for natural aggregate substitute through the above process, the plasterer applied soil, ash, cement, etc. to walls, ceilings, floors, etc. As a result of testing the compressive strength of concrete columns using a composition consisting of a mixture of recycled sand and cement powder, it was found to be more than 16,400 kg, and 30% lower than the price of natural sand. We believe the production of recycled sand will be possible at a price.

이상에서 상세히 살펴본 바와 같이 본 발명의 폐콘크리트를 이용한 조성물의 제조방법 및 그 조성물은 연간 약 2600만 톤의 폐콘크리트를 재활용함으로써, 건설에 사용되는 천연모래 수요의 약 3분의 1을 대체할 수 있기 때문에 무분별한 천연모래의 채취로 인한 환경훼손을 막을 수 있으며, 재생모래는 천연모래에 비해 가격이 30% 이상 저렴하므로 부자재 상승에 따른 건축비 폭등을 방지하여 건축비를 대폭 절감할 수 있다.As described in detail above, the method for producing a composition using the waste concrete of the present invention and the composition can replace about one third of the demand for natural sand used for construction by recycling about 26 million tons of waste concrete per year. Because of this, it is possible to prevent environmental damage caused by indiscriminate collection of natural sands, and recycled sands are 30% cheaper than natural sands, thereby preventing construction costs from rising due to rising subsidiary materials, thereby significantly reducing construction costs.

또한, 폐콘크리트 및 석분을 이용한 재생모래는 콘크리트 잔골재로 사용이 가능하며, 시멘트 가루와 혼합하여 블록ㆍ건축자재로 사용할 수 있고, 심각한 골재난 해결 및 각종 건축물의 폐콘크리트 처리문제를 해결할 수 있다.In addition, recycled sand using waste concrete and stone powder can be used as concrete aggregates, can be mixed with cement powder and used as blocks and construction materials, and can solve serious aggregate disasters and waste concrete disposal problems of various buildings.

Claims (4)

(1) 폐콘크리트 및 석분을 수거하여 이물질 제거한 다음 파쇄기에 넣고 0.3~3㎜ 크기로 분쇄하여 재생모래를 생산하는 재생모래 생산과정과;(1) recycled sand production process of collecting waste concrete and stone powder to remove foreign matters, put in a crusher and crushed to 0.3 ~ 3㎜ size to produce recycled sand; (2) 폐콘크리트 50중량%, 석분 30중량%에 나머지 시멘트 가루를 잔부로 하여 천연골재를 대체하는 조성물을 제조하는 혼합과정을; 포함하여 이루어지며,(2) 50% by weight of waste concrete, 30% by weight of stone powder, the remaining mixture of cement powder to produce a composition for replacing the natural aggregate; Including, 상기 재생모래 생산과정은, 폐콘크리트 및 석분을 파쇄기에 넣어 0.3~3㎜ 크기로 분쇄하고, 이 분쇄된 폐콘크리트 및 석분을 3mm 이하의 그물눈을 가진 진동스크린에 투입하여 0.3~3mm 크기로 분쇄된 폐콘크리트 및 석분은 진동스크린의 아래로 떨어지게 한 다음 벨트컨베이어로 이송하여 제1사일로에 저장하고 진동스크린의 그물눈을 통과하지 못한 3㎜를 초과하는 폐콘크리트 및 석분은 다시 파쇄기로 재투입하여 0.3~3㎜ 크기로 분쇄한 후 제1사일로에 저장하고,In the regeneration sand production process, waste concrete and stone powder are put into a crusher and crushed to a size of 0.3 to 3 mm, and the crushed waste concrete and stone powder are put into a vibration screen having a mesh of 3 mm or less and crushed to a size of 0.3 to 3 mm. Waste concrete and stone powder fall to the bottom of the vibrating screen and then transported to the belt conveyor and stored in the first silo. Waste concrete and stone powder exceeding 3mm that cannot pass through the mesh of the vibrating screen are returned to the crusher again 0.3 ~ After grinding to 3mm size and stored in the first silo, 상기 혼합과정은, 제1사일로에 저장된 폐콘크리트 및 석분으로 이루어진 재생모래와 제2사일로에 저장된 시멘트 가루를 스크루컨베이어에 의해 교반기로 이송하여 교반기에서 혼합함을 특징으로 하는 폐콘크리트를 이용한 조성물의 제조방법.In the mixing process, the recycled sand consisting of waste concrete and stone powder stored in the first silo and cement powder stored in the second silo are transferred to a stirrer by a screw conveyor and mixed in a stirrer. Way. 삭제delete 삭제delete 제 1항의 방법으로 제조됨을 특징으로 하는 폐콘크리트를 이용한 조성물.A composition using waste concrete, which is prepared by the method of claim 1.
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CN112759307A (en) * 2020-12-31 2021-05-07 广西军泰建材有限公司 Recycling method of waste concrete mixture

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KR20040070362A (en) * 2003-02-03 2004-08-09 우진환경개발 주식회사 system for remaking a waste concrete and its method
KR20050115358A (en) * 2004-06-03 2005-12-07 민원 The asphalt concrete manufacture method of having used reproduction aggregate and this using reproduction aggregate and waste cement

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040070362A (en) * 2003-02-03 2004-08-09 우진환경개발 주식회사 system for remaking a waste concrete and its method
KR20050115358A (en) * 2004-06-03 2005-12-07 민원 The asphalt concrete manufacture method of having used reproduction aggregate and this using reproduction aggregate and waste cement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112759307A (en) * 2020-12-31 2021-05-07 广西军泰建材有限公司 Recycling method of waste concrete mixture

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