JPH0834654A - Production of concrete - Google Patents
Production of concreteInfo
- Publication number
- JPH0834654A JPH0834654A JP19467094A JP19467094A JPH0834654A JP H0834654 A JPH0834654 A JP H0834654A JP 19467094 A JP19467094 A JP 19467094A JP 19467094 A JP19467094 A JP 19467094A JP H0834654 A JPH0834654 A JP H0834654A
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- water
- crushed
- granulated slag
- particle size
- 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
Links
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
- C04B28/08—Slag cements
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、産業副産物である水砕
スラグとコンクリート廃材を有効に利用する技術であっ
て、高強度を必要としない部位に使用されるコンクリー
トをより安価に製造する方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a technique for effectively utilizing water granulated slag and waste concrete, which are industrial by-products, and a method for manufacturing concrete used at a site that does not require high strength at a lower cost. It is about.
【０００２】[0002]
【従来の技術】水砕スラグ粉は潜在水硬性を有してお
り、高炉セメント、セメントの混和材としてセメントコ
ンクリート分野で広く利用されているが、単独では反応
性が乏しく、ポルトランドセメント、消石灰等のアルカ
リ刺激剤との共存下でなければセメント材料としての利
用はできない。BACKGROUND ART Granulated slag powder has a latent hydraulic property and is widely used in the cement concrete field as an admixture of blast furnace cement and cement, but it has poor reactivity when used alone, and Portland cement, slaked lime, etc. It cannot be used as a cement material unless it coexists with the alkali stimulant.
【０００３】また、近年の都市化の進展に伴い老朽化等
によるビルやその他のコンクリート建造物の解体作業も
増加し、それらの現場よりコンクリート廃材が産業副産
物として膨大に発生している。それらの殆どは埋立地等
に廃棄処分されているが、コンクリート用骨材枯渇の環
境下、コンクリート廃材を再生骨材として利用すること
が検討されている。これらのコンクリート廃材は粉砕し
て路盤材やコンクリート用代替骨材として再生が可能で
あることは知られてるが、強度面から天然骨材の一部置
換程度が利用限界である。従って、これらのコンクリー
ト廃材はその発生量の一部が再生利用されているのに過
ぎず、未だこれらの大半は埋立地等に廃棄されているの
が現状である。Further, with the progress of urbanization in recent years, the dismantling work of buildings and other concrete structures due to deterioration and the like has increased, and a large amount of concrete waste materials are generated as industrial by-products from those sites. Most of them are disposed of in landfills, etc., but under the environment of exhaustion of aggregate for concrete, it is considered to use waste concrete as recycled aggregate. It is known that these concrete waste materials can be crushed and recycled as roadbed materials or substitute aggregates for concrete, but from the viewpoint of strength, the extent of partial replacement of natural aggregates is the limit of use. Therefore, a part of the generated amount of these concrete waste materials is recycled only, and most of them are still disposed of in landfills.
【０００４】コンクリート廃材利用の具体的方法とし
て、特開昭６３−７４０３号公報及び特開昭６３−８２
５２号公報には、コンクリート廃材の破砕物に未硬化コ
ンクリートの洗浄排水から回収したスラッジ又はこれら
に更に高炉水滓粉末を配合した路盤材が開示されてい
る。これらによると、コンクリート廃材中のセメント未
水和物がスラッジや高炉水滓粉末と水和反応して水硬性
を高め、固化するものとされている。しかしながら、こ
れらに用いるコンクリート廃材は、骨材として用いるも
のである。また、スラッジは排水中にセメント水和物粒
子として縣濁していたものであり、回収後も水分を多量
に含んだものである。従って、その粒子の水和反応が相
当に進んでいることから、セメントの水和活性能力の残
存ができるだけ高い状態で使用することが好ましく、ス
ラッジ発生後の早期に使用しなければならないという問
題があった。As a concrete method for utilizing concrete waste materials, Japanese Patent Laid-Open Nos. 63-7403 and 63-82 are available.
Japanese Unexamined Patent Publication No. 52-52 discloses a roadbed material obtained by mixing crushed concrete waste material with sludge recovered from the washing drainage of uncured concrete, or with blast furnace slag powder further added thereto. According to these, it is said that unhydrated cement in concrete waste material undergoes a hydration reaction with sludge and blast furnace slag powder to increase hydraulic hardness and solidify. However, the concrete waste materials used for these are used as aggregates. The sludge was suspended as cement hydrate particles in the waste water, and contained a large amount of water even after being collected. Therefore, since the hydration reaction of the particles has progressed considerably, it is preferable to use the cement in a state where the remaining hydration activity capacity is as high as possible, and there is a problem that it must be used early after sludge generation. there were.
【０００５】また、特開平２−２６６００３号公報に
は、コンクリート廃材の破砕物と製鋼スラグ又はこれら
に更に高炉スラグを混合した水硬性路盤材が開示されて
いるが、これにおいても、コンクリート廃材は骨材とし
て用いるものである。特公平５−４２３８４号公報に
は、コンクリート破砕物と高炉水滓及び石膏からなる水
硬性セメントが開示されている。しかしながら、このコ
ンクリート廃材は、全量が微粉砕されたセメント成分と
され、骨材として用いるものではない。Further, Japanese Laid-Open Patent Publication No. 2-266003 discloses a crushed concrete waste material and steelmaking slag, or a hydraulic roadbed material in which blast furnace slag is further mixed with these materials. It is used as an aggregate. Japanese Patent Publication No. 5-42384 discloses a hydraulic cement composed of crushed concrete, blast furnace slag and gypsum. However, the entire amount of this waste concrete material is a finely crushed cement component and is not used as an aggregate.
【０００６】[0006]
【発明が解決しようとする課題】従って、本発明の目的
は、産業副産物である水砕スラグとコンクリート廃材の
粉末を有効に利用し、環境保全にも寄与し得る、より安
価にコンクリートを製造する方法を提供することにあ
る。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to produce concrete at a lower cost by effectively utilizing granulated slag, which is an industrial by-product, and powder of waste concrete, which can also contribute to environmental protection. To provide a method.
【０００７】[0007]
【課題を解決するための手段】本発明者等は、上記事情
に鑑みて鋭意研究した結果、水砕スラグ粉と特定の粒度
分布を持つコンクリート廃材の破砕品及び水を混練する
ことによって、通常のコンクリートと同等のワーカビリ
ティーが得られ、且つ、コンクリート廃材中のアルカリ
成分及び破砕によって現出する未反応セメント成分が水
砕スラグ粉の反応を促進し、通常のコンクリートと同様
に固化し密実な硬化体を形成することを見出し、本発明
を完成した。即ち、本発明は、比表面積２０００〜６０
００ｃｍ2 ／ｇの水砕スラグ粉１００重量部に対し、コ
ンクリート廃材を破砕、粒度調製して得られた下記の粒
度分布を有するコンクリート破砕品２００〜１０００重
量部を配合し、これに水を加えて混練することを特徴と
するコンクリートの製造方法である。 粒度分布 ０．１５ｍｍ未満 ５〜１５重量％ ０．１５ｍｍ以上〜５ｍｍ未満 ２５〜４５重量％ ５ｍｍ以上〜２０ｍｍ以下 ４０〜７０重量％Means for Solving the Problems As a result of intensive studies in view of the above circumstances, the inventors of the present invention have found that, by kneading granulated slag powder and a crushed product of concrete waste material having a specific particle size distribution and water, The workability equivalent to that of concrete is obtained, and the alkali component in the concrete waste material and the unreacted cement component that appears by crushing accelerate the reaction of the granulated slag powder, and solidify and become solid like ordinary concrete. The inventors have found that a cured product is formed and have completed the present invention. That is, the present invention has a specific surface area of 2000-60.
To 100 parts by weight of granulated slag powder of 00 cm 2 / g, 200 to 1000 parts by weight of a crushed concrete product having the following particle size distribution obtained by crushing a concrete waste material and adjusting the particle size is mixed, and water is added to this. It is a method for producing concrete, which is characterized in that the concrete is kneaded. Particle size distribution Less than 0.15 mm 5 to 15% by weight 0.15 mm to less than 5 mm 25 to 45% by weight 5 mm to 20 mm inclusive 40 to 70% by weight
【０００８】以下、本発明について詳細に説明する。本
発明に使用する水砕スラグ粉とは、高炉スラグを水で急
冷した水砕スラグをミル、分級機で比表面積２０００〜
６０００ｃｍ2 ／ｇに粉砕、分級したものであり、潜在
水硬性を有するものである。２０００ｃｍ2 ／ｇ未満の
比表面積では、アルカリ刺激剤との共存下であっても反
応性が乏しく硬化体の実用強度が得がたく、また、コン
クリート廃材との組み合せにおいて、通常のコンクリー
ト並みのワーカビリティーが得にくい。また、６０００
ｃｍ2 ／ｇを越えても水硬性の発現にさほど影響はな
く、逆に製造コストが嵩むことになり不経済である。The present invention will be described in detail below. The granulated slag powder used in the present invention is a granulated slag obtained by rapidly cooling blast furnace slag with water in a mill or classifier to have a specific surface area of 2000-
It is crushed to 6000 cm 2 / g and classified, and has latent hydraulic properties. With a specific surface area of less than 2000 cm 2 / g, reactivity is poor even in the coexistence with an alkali stimulant, and it is difficult to obtain practical strength of the hardened material. Moreover, in combination with concrete waste material, workability comparable to ordinary concrete is obtained. Is difficult to obtain. Also, 6000
Even if it exceeds cm 2 / g, the development of hydraulic properties is not so affected, and conversely the manufacturing cost increases, which is uneconomical.
【０００９】コンクリート廃材とは、ビル等のコンクリ
ート建造物を解体する際に生ずるコンクリート廃棄物で
あり、本発明で用いるコンクリート破砕品とは該コンク
リート廃材をジョークラッシャー等で破砕、鉄筋等の異
物を除去したのち、所定の粒度分布となるように粒度調
整したものをいう。尚、破砕にあたっては、ミル等も併
用することができる。コンクリート廃材中には未反応の
セメント成分が含有されており、コンクリート廃材を破
砕することにより現出する。そして、これらのアルカリ
成分が水砕スラグ粉の潜在水硬性を刺激して通常のコン
クリートと同様に固化し、密実な硬化体を与えるという
作用を有するものである。The concrete waste material is a concrete waste generated when a concrete structure such as a building is demolished. After being removed, the particle size is adjusted so as to obtain a predetermined particle size distribution. A mill or the like can be used together for crushing. The unreacted cement component is contained in the concrete waste material, and it appears by crushing the concrete waste material. Then, these alkaline components have the effect of stimulating the latent hydraulic property of the granulated slag powder and solidifying it like ordinary concrete to give a solid hardened body.
【００１０】コンクリート破砕品の粒径が大きい程比表
面積が減少し、それに伴って水砕スラグ粉の反応を促す
アルカリ成分及び破砕によって現出する未反応セメント
も減少する。従って、ただ単に破砕するだけでは水砕ス
ラグ粉の反応を促進することはできないので、本発明で
は所定の粒度分布となるように粒度調整する。The larger the particle size of the crushed concrete product, the smaller the specific surface area, and accordingly, the less alkaline component that promotes the reaction of the granulated slag powder and the unreacted cement that appears by crushing. Therefore, the reaction of the granulated slag powder cannot be promoted simply by crushing it, so that the particle size is adjusted in the present invention so as to obtain a predetermined particle size distribution.
【００１１】本発明者らは、粒径５ｍｍ未満のコンクリ
ート破砕品の量が水砕スラグ粉の潜在水硬性に重要な影
響を及ぼすことを見出した。従って、粒径５ｍｍ未満の
粒子の含有量はコンクリート破砕品の３０重量％以上で
あることが重要である。この内、粒径０．１５ｍｍ未満
の粒子は潜在水硬性に与える影響力がより強いので、コ
ンクリート破砕品の５〜１５重量％であることが必要で
あり、粒径０．１５ｍｍ以上、５ｍｍ未満の粒子は２５
〜４５重量％であることが必要である。また、コンクリ
ート破砕品は粒径５ｍｍ以上、２０ｍｍ以下の粒子を４
０〜７０重量％含む必要がある。そして、粒径２０ｍｍ
を越える粒子は、１０重量％以下とすることが望まし
い。そして、粒径０．１５ｍｍ未満の粒子は主としてセ
メント成分として作用し、粒径０．１５ｍｍ以上、５ｍ
ｍ未満の粒子はセメント成分としても作用するが、細骨
材成分としても作用し、粒径５ｍｍ以上、２０ｍｍ以下
の粒子は主として粗骨材成分として作用すると考えられ
る。それ故、本発明のコンクリート破砕品を使用すれ
ば、別途骨材を使用しなくとも差し支えない。また、水
砕スラグ粉以外のセメント成分の使用も不要とすること
ができる。The present inventors have found that the amount of crushed concrete products having a particle size of less than 5 mm has an important effect on the latent hydraulic property of granulated slag powder. Therefore, it is important that the content of particles having a particle size of less than 5 mm is 30% by weight or more of the crushed concrete product. Among them, particles having a particle size of less than 0.15 mm have a stronger influence on the latent hydraulic property, so that it is necessary to be 5 to 15% by weight of the concrete crushed product, and a particle size of 0.15 mm or more and less than 5 mm. 25 particles
It is necessary to be ˜45% by weight. For crushed concrete, particles with a particle size of 5 mm or more and 20 mm or less
It is necessary to contain 0 to 70% by weight. And particle size 20mm
It is desirable that the amount of particles exceeding 10% is 10% by weight or less. Particles having a particle size of less than 0.15 mm mainly act as a cement component, and have a particle size of 0.15 mm or more and 5 m.
Particles of less than m also act as a cement component, but also act as a fine aggregate component, and particles having a particle size of 5 mm or more and 20 mm or less are considered to act mainly as a coarse aggregate component. Therefore, if the crushed concrete product of the present invention is used, there is no problem even if a separate aggregate is not used. Further, the use of cement components other than the granulated slag powder can be dispensed with.
【００１２】本発明では、上記コンクリート破砕品を水
砕スラグ粉１００重量部に対して２００〜１０００重量
部配合する。２００重量部未満では、水砕スラグ粉の潜
在水硬性を刺激するに充分な量のアルカリ成分が得られ
ず、硬化不良の原因となる。また、１０００重量部を越
えると硬化後の強度が低くなり、好ましくない。In the present invention, the crushed concrete product is mixed in an amount of 200 to 1000 parts by weight with respect to 100 parts by weight of granulated slag powder. If the amount is less than 200 parts by weight, a sufficient amount of the alkaline component for stimulating the latent hydraulic property of the granulated slag powder cannot be obtained, which causes poor curing. Further, if it exceeds 1000 parts by weight, the strength after curing becomes low, which is not preferable.
【００１３】本発明は高強度を必要としない低級コンク
リート分野を対象とするが、従来は工業製品であるセメ
ントと天然骨材もしくは人工骨材を使用して製造されて
いるのに対して、産業副産物のみを使用して、粉末度及
び粒度を調整することによってより安価にコンクリート
を製造することができるものであり、また、産業副産物
を有効利用にも役立つものである。本発明は、実質的に
コンクリート廃材、水砕スラグ粉以外の材料を使用せず
にコンクリートを得る。コンクリート廃材を粉砕する
と、微粉末から粗骨材以上の粒径のものが得られるが、
本発明は微粉末から粗骨材までの粒径のコンクリート破
砕品を使用するので、全量を粉砕するのに比べて粉砕コ
ストが低い。また、本発明は、通常の粒度分布を有する
破砕品の内、粒径が２０ｍｍを越えるものを除いてその
全部を有効利用するものであるが、結果的に所定の粒度
分布を満足する範囲であれば粒径２０ｍｍ以上のものを
含んでいても差し支えない。また、本発明には通常のコ
ンクリートで使用される石膏や減水剤、気泡剤、急結
剤、強度増進剤及び膨張剤等の混和剤や、天然骨材、人
工骨材も使用できる。Although the present invention is intended for the field of low-grade concrete that does not require high strength, it is conventionally manufactured using cement, which is an industrial product, and natural aggregate or artificial aggregate, whereas Concrete can be manufactured at lower cost by adjusting the fineness and particle size by using only the by-products, and it is also useful for effectively utilizing the industrial by-products. INDUSTRIAL APPLICABILITY The present invention obtains concrete substantially without using materials other than concrete waste materials and granulated slag powder. When crushed concrete waste material, it is possible to obtain fine particles with a particle size larger than that of coarse aggregate.
Since the present invention uses a crushed concrete product having a particle size ranging from fine powder to coarse aggregate, the crushing cost is lower than that of crushing the whole amount. Further, the present invention makes effective use of all of the crushed products having a normal particle size distribution except those having a particle size of more than 20 mm. If the particle size is 20 mm or more, it may be included. Further, in the present invention, an admixture such as gypsum, a water reducing agent, a foaming agent, a quick-setting agent, a strength-enhancing agent and a swelling agent used in ordinary concrete, a natural aggregate or an artificial aggregate can also be used.
【００１４】[0014]
【実施例】以下、実施例により本発明を詳細に説明する
が、本発明は実施例により何ら限定されるものではな
い。コンクリート建造物解体現場より採取した人頭大の
コンクリート廃材をジョークラッシャーにて一次粉砕
し、粒径が４０ｍｍ以下となるようにした。次に該廃材
より残存する鉄筋等の異物を人手により除去し、更にボ
ールミルにて粉砕して粒径が２０ｍｍ以下となるように
した。このようにして得られた廃材を２０ｍｍ、１０ｍ
ｍ、５ｍｍ、１．２ｍｍ、０．１５ｍｍの目のふるいを
用いて段階的にふるい、それぞれのふるいの間に捕捉さ
れる粒度分布を有するコンクリート破砕品に分別した。The present invention will be described in detail below with reference to examples, but the present invention is not limited to the examples. A human head-sized waste concrete material collected from a concrete building dismantling site was crushed by a jaw crusher to a particle size of 40 mm or less. Next, foreign substances such as rebars remaining from the waste material were manually removed, and further pulverized by a ball mill so that the particle diameter became 20 mm or less. Waste material obtained in this way is 20 mm, 10 m
Sieves were sieved in stages using m, 5 mm, 1.2 mm and 0.15 mm sieves and fractionated into concrete crushed products with a particle size distribution trapped between each sieve.
【００１５】上記コンクリート破砕品を所定の粒度分布
となるように配合し、これに水砕スラグ粉、水、混和剤
及び骨材等を混合し、通常の５０ｌ二軸コンクリートミ
キサーで混練した。コンクリート破砕品、水砕スラグ粉
等の使用材料の配合割合、水砕スラグ粉の比表面積、コ
ンクリート破砕品の粒度分布、フレッシュコンクリート
のスランプ及び硬化コンクリートの圧縮強度を表１に示
す。The crushed concrete product was blended so as to have a predetermined particle size distribution, and the crushed slag powder, water, an admixture, an aggregate and the like were mixed and kneaded with a usual 50 l biaxial concrete mixer. Table 1 shows the mixing ratios of materials used such as concrete crushed products and granulated slag powder, specific surface area of granulated slag powder, particle size distribution of crushed concrete products, slump of fresh concrete, and compressive strength of hardened concrete.
【００１６】[0016]
【表１】 [Table 1]
【００１７】表１より以下のことがわかる。 水砕スラグ粉と天然骨材との組み合わせでは、水砕
スラグ粉が反応せず硬化しない。 水砕スラグ粉とコンクリート破砕品との組み合わせ
において、コンクリート破砕品の粒径５ｍｍ未満の粒子
の含有量が３０重量％以上、粒径０．１５ｍｍ未満の粒
子の含有量が５重量％以上であっても、水砕スラグ粉の
比表面積が２０００ｃｍ2 ／ｇ未満では硬化体強度が得
られない。一方、水砕スラグ粉の比表面積が２０００ｃ
ｍ2 ／ｇ以上であっても、コンクリート破砕品の粒径５
ｍｍ未満の粒子の含有量が３０重量％未満、粒径０．１
５ｍｍ未満の粒子の含有量が５重量％未満では、充分な
硬化体強度が得られない。 本発明の方法によって、水破スラグ粉とコンクリー
ト破砕品との組み合わせで、通常のコンクリートと同様
のワーカビリティーを有するコンクリートの製造が可能
であり、配合の加減では１００ｋｇｆ／ｃｍ2 以上の圧
縮強度が得られる。The following can be seen from Table 1. When the granulated slag powder and the natural aggregate are combined, the granulated slag powder does not react and does not harden. In the combination of the granulated slag powder and the crushed concrete product, the content of particles having a particle size of less than 5 mm is 30% by weight or more, and the content of particles having a particle size of less than 0.15 mm is 5% by weight or more. However, if the specific surface area of the granulated slag powder is less than 2000 cm 2 / g, the strength of the cured product cannot be obtained. On the other hand, the specific surface area of the granulated slag powder is 2000c
Even if it is more than m 2 / g, the particle size of crushed concrete is 5
Content of particles less than mm is less than 30% by weight, particle size 0.1
If the content of particles of less than 5 mm is less than 5% by weight, sufficient cured product strength cannot be obtained. According to the method of the present invention, it is possible to produce concrete having the same workability as ordinary concrete by combining the water-crushed slag powder and the crushed concrete product, and the compression strength of 100 kgf / cm 2 or more can be obtained by adjusting the mixing ratio. To be
【００１８】[0018]
【発明の効果】本発明の方法により、コンクリート廃材
の土建材料としての有効利用を可能にし、産業副産物で
ある高炉水破スラグ粉との組み合わせよって、安価なコ
ンクリートを提供できる。Industrial Applicability According to the method of the present invention, it is possible to effectively use concrete waste material as an earth building material, and it is possible to provide inexpensive concrete by combining it with blast furnace water slag powder, which is an industrial by-product.
Claims (1)
の水砕スラグ粉１００重量部に対し、コンクリート廃材
を破砕、粒度調製して得られた下記の粒度分布を有する
コンクリート破砕品２００〜１０００重量部を配合し、
これに水を加えて混練することを特徴とするコンクリー
トの製造方法。 粒度分布 ０．１５ｍｍ未満 ５〜１５重量％ ０．１５ｍｍ以上〜５ｍｍ未満 ２５〜４５重量％ ５ｍｍ以上〜２０ｍｍ以下 ４０〜７０重量％1. A specific surface area of 2000 to 6000 cm 2 / g.
100 to 100 parts by weight of water granulated slag powder, crushed concrete waste material, 200-1000 parts by weight of a crushed concrete product having the following particle size distribution obtained by adjusting the particle size is blended,
A method for producing concrete, which comprises adding water to this and kneading. Particle size distribution Less than 0.15 mm 5 to 15% by weight 0.15 mm to less than 5 mm 25 to 45% by weight 5 mm to 20 mm inclusive 40 to 70% by weight
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19467094A JP3366451B2 (en) | 1994-07-27 | 1994-07-27 | Concrete production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19467094A JP3366451B2 (en) | 1994-07-27 | 1994-07-27 | Concrete production method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0834654A true JPH0834654A (en) | 1996-02-06 |
| JP3366451B2 JP3366451B2 (en) | 2003-01-14 |
Family
ID=16328359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19467094A Expired - Lifetime JP3366451B2 (en) | 1994-07-27 | 1994-07-27 | Concrete production method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3366451B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0967185A1 (en) * | 1998-06-25 | 1999-12-29 | Alsen AG | Binder, particularly cement, containing slag-sand |
| WO2010143656A1 (en) * | 2009-06-09 | 2010-12-16 | 株式会社竹中工務店 | Hydraulic cement composition |
| JP2010285289A (en) * | 2009-06-09 | 2010-12-24 | Takenaka Komuten Co Ltd | Concrete composition using blast furnace slag composition |
| JP2012012284A (en) * | 2010-06-01 | 2012-01-19 | Ohbayashi Corp | Method for producing hydraulic material, and method for selecting crushed concrete material |
| JP2013159502A (en) * | 2012-02-02 | 2013-08-19 | Kajima Corp | Hydraulic composition |
| CN104177034A (en) * | 2014-09-16 | 2014-12-03 | 福州大学 | Neutral caustic soda slag ceramsite concrete and preparation method thereof |
| RU2786458C1 (en) * | 2022-09-27 | 2022-12-21 | федеральное государственное бюджетное образовательное учреждение высшего образования "Белгородский государственный технологический университет им. В.Г. Шухова" | Raw mixture for pressed gypsum articles and method for manufacture thereof |
-
1994
- 1994-07-27 JP JP19467094A patent/JP3366451B2/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0967185A1 (en) * | 1998-06-25 | 1999-12-29 | Alsen AG | Binder, particularly cement, containing slag-sand |
| WO2010143656A1 (en) * | 2009-06-09 | 2010-12-16 | 株式会社竹中工務店 | Hydraulic cement composition |
| JP2010285302A (en) * | 2009-06-09 | 2010-12-24 | Tokyo Institute Of Technology | Hydraulic cement composition |
| JP2010285289A (en) * | 2009-06-09 | 2010-12-24 | Takenaka Komuten Co Ltd | Concrete composition using blast furnace slag composition |
| JP2012012284A (en) * | 2010-06-01 | 2012-01-19 | Ohbayashi Corp | Method for producing hydraulic material, and method for selecting crushed concrete material |
| JP2013159502A (en) * | 2012-02-02 | 2013-08-19 | Kajima Corp | Hydraulic composition |
| CN104177034A (en) * | 2014-09-16 | 2014-12-03 | 福州大学 | Neutral caustic soda slag ceramsite concrete and preparation method thereof |
| CN104177034B (en) * | 2014-09-16 | 2015-12-09 | 福州大学 | Neutral sodium alkali-activated slag haydite concrete and preparation method thereof |
| RU2786458C1 (en) * | 2022-09-27 | 2022-12-21 | федеральное государственное бюджетное образовательное учреждение высшего образования "Белгородский государственный технологический университет им. В.Г. Шухова" | Raw mixture for pressed gypsum articles and method for manufacture thereof |
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|---|---|
| JP3366451B2 (en) | 2003-01-14 |
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