JPH10273355A - Production of highly strong lightweight concrete molded product - Google Patents
Production of highly strong lightweight concrete molded productInfo
- Publication number
- JPH10273355A JPH10273355A JP9301397A JP9301397A JPH10273355A JP H10273355 A JPH10273355 A JP H10273355A JP 9301397 A JP9301397 A JP 9301397A JP 9301397 A JP9301397 A JP 9301397A JP H10273355 A JPH10273355 A JP H10273355A
- Authority
- JP
- Japan
- Prior art keywords
- molded product
- concrete
- lightweight concrete
- mixture
- lightweight
- 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.)
- Pending
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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、高強度軽量コンクリー
トの成形体の製造方法に関し、さらに詳しくいえば、人
工軽量骨材を使用したコンクリート原料中に高性能減水
剤を添加するとともに、コンクリート中に微細な気泡を
混入することによって、オートクレーブなどの高温高圧
蒸気養生によることなく、常圧蒸気養生のみで、軽量で
高強度なコンクリート成形体を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 relates to a method for producing a molded product of high-strength lightweight concrete, and more specifically, to a method of adding a high-performance water reducing agent to a concrete raw material using artificial lightweight aggregate, The present invention relates to a method for producing a lightweight and high-strength concrete molded body by only normal-pressure steam curing without using high-temperature and high-pressure steam curing such as an autoclave by mixing fine bubbles into the concrete.
【０００２】[0002]
【従来の技術】従来、軽量コンクリートあるいは気泡コ
ンクリートとよばれているコンクリートは、天然軽量骨
材（例えば大島火山礫、榛名火山礫等）、人工軽量骨材
（例えばメサライト、アサノライト、スーパーメサライ
ト、セラビオボール等）あるいはパーライト、Ｕライト
などを使用し、また、軽量化の手段として、コンクリー
トに多量の気泡を混入することを行っていた。2. Description of the Related Art Conventionally, lightweight concrete or aerated concrete includes natural lightweight aggregates (eg, Oshima volcanic rock, Haruna volcanic rock, etc.) and artificial lightweight aggregates (eg, mesalite, asanolite, super mesalite). , Ceravio balls, etc.) or perlite, U-lite, etc., and as a means of weight reduction, a large amount of air bubbles are mixed into concrete.
【０００３】人工軽量骨材として絶乾比重0.7 〜1.0 の
人工軽量骨材を用い、セメントおよびスラグ微粉よりな
る合成材に0.5 〜1.2 重量％のメラミン系高性能減水剤
を用い、気泡を混入混合して、成形体の気乾比重が1.0
〜1.5 で圧縮強度が 150〜360 kgf ／cm2 の高強度軽量
コンクリートの成形体の製造方法が提案されている（特
開平６−１３５７７５号公報参照）。また、同様に、上
記調合に結合材比３〜７重量％の活性白土およびシリカ
フュームよりなる無機質成分を混合し、メラミン系高性
能減水剤を水とともに添加混合するとともに、気泡を混
入混合する、高強度軽量コンクリートの成形体の製造方
法が提案されている。（特開平８−２６８５３号公報参
照）。[0003] As an artificial lightweight aggregate, artificial lightweight aggregate having an absolute dry specific gravity of 0.7 to 1.0 is used, and a synthetic material composed of cement and slag fine powder is mixed with air bubbles using a melamine-based high-performance water reducing agent of 0.5 to 1.2% by weight. And the air-dry specific gravity of the compact is 1.0
A method for producing a high-strength lightweight concrete compact having a compressive strength of 150 to 360 kgf / cm 2 and a compressive strength of 1.5 to 1.5 has been proposed (see JP-A-6-135775). In the same manner, an inorganic component composed of activated clay and silica fume having a binder ratio of 3 to 7% by weight is mixed with the above mixture, and a melamine-based high-performance water reducing agent is added and mixed with water, and air bubbles are mixed and mixed. A method for producing a molded product of high-strength lightweight concrete has been proposed. (See JP-A-8-26853).
【０００４】[0004]
【発明が解決しようとする課題】しかし、これらの方法
では、コンクリートの気乾比重を 1.0以下にできないと
とも圧縮強度も200kgf／cm2 以上を得られないという問
題があった。また、軽量骨材として無機質発泡体にＵラ
イトを用いた気泡コンクリートの製造方法も提案されて
いる（特公平８−２２７８９参照）がこの方法では絶乾
比重が0.78で圧縮強度 112kg／cm2 までのものしかでき
ないとともに、養生も水中28日の養生が必要であった。
そして、軽量化をすればするほど、軽量骨材の量や気泡
量が増大して強度が低下するとともに、乾燥収縮の増大
し、また作業性も悪くなり、成形時のバイブレーターに
よって材料が著しく分離して、成形体の角欠けやひび割
れの発生等、品質ならびに外観上の欠点が生じることに
なるため、軽量で強いコンクリート成形体の成形は軽さ
に限度があり、また困難であるという問題があった。However, these methods have a problem that concrete cannot have an air-drying specific gravity of 1.0 or less and a compressive strength of 200 kgf / cm 2 or more cannot be obtained. Also, a method for producing aerated concrete using U-lite as an inorganic foam as a lightweight aggregate has been proposed (see Japanese Patent Publication No. 8-22789). However, in this method, the absolute dry gravity is 0.78 and the compressive strength is up to 112 kg / cm 2. Not only can it be cured, but also needs 28 days of underwater curing.
And, as the weight is reduced, the amount of lightweight aggregate and the amount of air bubbles increase, the strength decreases, the drying shrinkage increases, and the workability also deteriorates, and the material is significantly separated by the vibrator during molding. However, there will be defects in quality and appearance, such as occurrence of corner cracks and cracks in the molded product.Therefore, there is a problem that molding of a lightweight and strong concrete molded product is limited in weight and difficult. there were.
【０００５】本発明は、上記の問題を解決し、材料の分
離がなく、製品の角欠けやひび割れが生ぜず、しかも常
圧蒸気養生により軽量で高強度のコンクリート成形体を
得ることのできるようにしようとするものである。The present invention has been made to solve the above-mentioned problems, and it is possible to obtain a lightweight and high-strength concrete molded product by means of normal pressure steam curing without separation of materials, without occurrence of chipping or cracking of a product. Is to try.
【０００６】[0006]
【課題を解決するための手段】本発明者らは、上記の目
的を達成するため鋭意研究を重ねた結果、原料物質の最
適な組合わせによって、スランプフローが大きく、振動
材の使用が軽微で作業性がよく、また、オートクレーブ
などの高温高圧蒸気養生を用いることなく、常圧蒸気養
生により優れた物性を示す、高強度、軽量コンクリート
製品の得られることを見出し、本発明を形成するに至っ
た。Means for Solving the Problems The inventors of the present invention have conducted intensive studies to achieve the above object, and as a result, the slump flow is large and the use of the vibration material is small due to the optimal combination of the raw materials. Workability is good, and it has been found that a high-strength, lightweight concrete product can be obtained which shows excellent physical properties by normal-pressure steam curing without using high-temperature and high-pressure steam curing such as an autoclave, and has led to the formation of the present invention. Was.
【０００７】すなわち、本発明の高強度軽量コンクリー
ト成形体の製造方法は、セメントおよびスラグ微粉、無
機質成分分質よりなる合成材と、絶乾比重 0.3〜 0.7の
人工軽量骨材とを混合し、これに合成材に対して、0.7
〜1.0 重量％の高性能減水剤を用い、これを水溶液とし
てあるいは水とともに添加混合し、この混合物にコンク
リート１ｍ3 につき50〜300 リットルの微細な気泡を混
入混合して成形し、常圧蒸気養生することを特微とし、
成形体の気乾比重0.8 〜1.20、圧縮強度150 〜300 kgf
／cm2 である、高強度軽量コンクリート成形体の製造方
法である。That is, the method for producing a high-strength lightweight concrete molded article of the present invention comprises mixing a synthetic material composed of cement, slag fine powder, and mineral components with an artificial lightweight aggregate having a specific gravity of 0.3 to 0.7, For synthetic materials, 0.7
高性能 1.0% by weight of a high-performance water reducing agent, added as an aqueous solution or mixed with water, mixed with 50-300 liters of fine air bubbles per 1 m 3 of concrete, and formed into a mixture. To do,
Air-dry specific gravity of molded product 0.8-1.20, compressive strength 150-300 kgf
/ Cm 2, which is a method for producing a high-strength lightweight concrete molded product.
【０００８】[0008]
【発明の実施の形態】本発明に用いる高密度で、微粒子
の無機質成分物質は、シリカフューム、カオリン微粉砕
物、無水石膏混合物が使用可能である。無機質成分物質
の使用量は、粉体重量部の 5〜10％程度が好ましい。DESCRIPTION OF THE PREFERRED EMBODIMENTS As the high-density, fine-particle inorganic component substance used in the present invention, silica fume, kaolin finely pulverized product, and anhydrous gypsum mixture can be used. The amount of the inorganic component substance used is preferably about 5 to 10% by weight of the powder.
【０００９】高性能減水剤としては、ナフタリンスルホ
ン酸ホルマリン縮合物、メラミンホルマリン縮合物、ポ
リカルボン酸塩、ポリアミノスルホン酸塩、ポリエーテ
ル系化合物、芳香族スルホン酸化合物等、添加率によっ
て10〜30％程度の減水可能な、高性能減水剤が使用可能
である。例えば、花王（株）製商品名「マイテイ１５０
ＲＸ」、ポゾリス物産（株）製商品名「ＮＬ１４４
０」、大日本インキ化学工業製商品名「Ｓ３００」等が
挙げられる。高性能減水剤の使用量は、粉体に対して0.
7 〜1.0 重量％が適当である。0.7 重量％未満では減水
効果が少なく水量の増大をまねき強度が低下するととも
に、材料分離をし、好ましくない。Examples of the high-performance water reducing agent include naphthalenesulfonic acid formalin condensate, melamine formalin condensate, polycarboxylate, polyaminosulfonate, polyether compound, aromatic sulfonic acid compound, etc. %, A high-performance water reducing agent can be used. For example, Kao Corporation product name "Mighty 150
RX ”, Pozoris Bussan Co., Ltd. product name“ NL144 ”
0 "and" S300 "(trade name, manufactured by Dainippon Ink and Chemicals, Inc.). The amount of high-performance water reducing agent used is 0.
7-1.0% by weight is suitable. If the amount is less than 0.7% by weight, the water reducing effect is small, which leads to an increase in the amount of water, resulting in a decrease in strength and separation of materials.
【００１０】本発明に使用する軽量骨材は、絶乾比重0.
3 〜0.7 の人工軽量骨材で、造粒形軽量発泡焼成体であ
り、高い耐熱性を有し、耐久性、低吸水性にも優れてい
る。また無数の微細な独立気泡を内蔵するドーム構造の
集合体であるため、軽量で断熱性能に優れ、しかも高い
耐圧強度を有している。[0010] The lightweight aggregate used in the present invention has an absolute dry specific gravity of 0.
It is an artificial lightweight aggregate of 3 to 0.7, and is a granulated lightweight foam fired body, has high heat resistance, and is excellent in durability and low water absorption. In addition, since it is an aggregate of a dome structure containing a myriad of fine closed cells, it is lightweight, has excellent heat insulation performance, and has high pressure resistance.
【００１１】本発明の製造方法は、結合材と人工軽量骨
材、高性能減水剤及び気泡の最適な組合せにより常圧蒸
気養生のみで、優れた物性を示す高強度、軽量コンクリ
ート、成形体を得るものであり、原料と気泡を均一に混
練して軽量コンクリートとする練り混ぜ工程と、これを
型枠に打込む成形工程及び常圧蒸気養生を行う工程の三
つの主要工程からなっている。[0011] The production method of the present invention provides a high-strength, lightweight concrete or molded article which exhibits excellent physical properties only by normal-pressure steam curing by using an optimum combination of a binder, an artificial lightweight aggregate, a high-performance water reducing agent and bubbles. The process comprises three main steps: a kneading step of uniformly kneading the raw materials and the air bubbles to obtain a lightweight concrete, a forming step of driving the mixture into a mold, and a step of performing atmospheric steam curing.
【００１２】先ず、第１工程として、原料のセメント、
スラグ微粉、無機質成分分質よりなる結合材と絶乾比重
0.3 〜0.7 の人工軽量骨材とを均一に混合する。そし
て、この混合材料に、上記結合材重量の 0.7〜1.0 重量
％の高性能減水剤を水溶液として、あるいは水と同時に
添加した後、別途事前に発泡機によって発泡させた気泡
を、コンクリート１ｍ3 につき50〜300 リットル混入し
て均一に練り混ぜて軽量コンクリートとする。この軽量
コンクリート中の気泡は安定した微細な独立気泡として
存在する。なお、この場合の気泡は、起泡剤および水を
用いて調整した起泡液を、発泡機を介して発泡させた気
泡として供給される。また、人工軽量骨材は、造粒形人
工軽量骨材である。First, as a first step, a raw material cement,
Binder consisting of slag fines and mineral components, and absolute density
Mix uniformly with 0.3-0.7 artificial lightweight aggregate. Then, to this mixed material, as an aqueous solution of 0.7 to 1.0 wt% of superplasticizer of the binder weight, or after the addition at the same time as the water, the bubbles were foamed by separately pre foaming machine, per concrete 1 m 3 Mix 50-300 liters and mix evenly to make lightweight concrete. The cells in the lightweight concrete are present as stable fine closed cells. In this case, the bubbles are supplied as bubbles formed by foaming a foaming liquid prepared using a foaming agent and water through a foaming machine. The artificial lightweight aggregate is a granulated artificial lightweight aggregate.
【００１３】原材料の好ましい調合割合の一例を表−１
に示す。Table 1 shows an example of a preferable mixing ratio of the raw materials.
Shown in
【００１４】 （表１） 水 185 kg/m3 セメント 400 kg/m3 ［結合材］ スラグ微粉 100 kg/m3 ［結合材］ 無機質成分分質 30 kg/m3 軽量骨材 333 kg/m3 高性能減水剤 3.5 kg/m3 気泡 105 リットル/m3 (Table 1) Water 185 kg / m 3 Cement 400 kg / m 3 [Binder] Slag fine powder 100 kg / m 3 [Binder] Mineral component separation 30 kg / m 3 Lightweight aggregate 333 kg / m 3 superplasticizer 3.5 kg / m 3 foam 105 l / m 3
【００１５】表１の調合割合によれば、スラグ微粉及び
無機質成分分質による流動性及び人工軽量骨材の低吸水
性と高性能減水剤の添加により、単位水量が少ないにも
かかわらずスランプが大きく、また、気泡の混入によっ
て、材料の分離が著しく軽減し、高強度な軽量コンクリ
ート成形体が得られる。既存の各種軽量骨材を使用した
気乾比重と圧縮強度の関係は、図１（「軽量骨材コンク
リートハンドブック」より）のごとくであり、図中のο
印は表１の調合割合を変化させて実験によって得られた
強度値を示す。According to the mixing ratio shown in Table 1, the slump is produced despite the small amount of water due to the fluidity of the slag fine powder and the mineral components and the low water absorption of the artificial lightweight aggregate and the addition of a high-performance water reducing agent. The separation of materials is remarkably reduced due to the large and mixed air bubbles, and a high-strength lightweight concrete molded product can be obtained. The relationship between air-dry specific gravity and compressive strength using various existing lightweight aggregates is as shown in Fig. 1 (from "Lightweight Aggregate Concrete Handbook").
The marks indicate the strength values obtained by the experiment while changing the mixing ratio in Table 1.
【００１６】次に、第２工程として、均一に練り混ぜ合
せられたコンクリートは、トレミー式あるいは注入方式
などの方法によって型枠に静かに流し込ませる。最後に
第３工程として、コンクリートを型枠に流し込んだ後、
常圧蒸気養生を行う養生時間は、コンクリートを型枠に
流し込んで３〜４時間前置き養生をした後、３〜４時間
かけて50〜65℃まで昇温し、50°〜65℃の温度を４〜５
時間保持し、次いで４〜５時間かけて室温まで降温す
る。この常圧蒸気養生によって、コンクリートの強度を
早く高くすることができる。Next, as a second step, the uniformly kneaded concrete is gently poured into a mold by a method such as a tremy method or an injection method. Finally, as a third step, after pouring the concrete into the formwork,
The curing time for normal pressure steam curing is as follows: concrete is poured into a formwork, pre-cured for 3 to 4 hours, and then heated to 50 to 65 ° C over 3 to 4 hours. 4-5
Hold for a time and then cool to room temperature over 4-5 hours. By the normal-pressure steam curing, the strength of the concrete can be quickly increased.
【００１７】[0017]
【実施例】以下に実施例および比較例を挙げて本発明を
更に詳しく説明する。The present invention will be described in more detail with reference to the following Examples and Comparative Examples.
【００１８】実施例１ セメント（三菱マテリアル製）400 重量部、スラグ微粉
（新日鉄化学製） 100重量部、無機質成分分質としてシ
リカフューム（日本重化学工業製）、 30重量部を、ミキ
サに同時に投入して30秒間混合後、人工軽量骨材（サン
ライト製）333重量部を投入し30秒間混合したのち、芳
香族スルホン酸化合物系高性能減水剤（ポゾリス物産
製）３．５重量部含んだ水溶液188.5 重量部を投入して
１分30秒間混合する。これに予め起泡した気泡105 リッ
トルを混合したのち、２分30秒間混練したのちに型枠に
流し込み、成形終了後、前置き４時間、常圧蒸気養生と
して昇温３時間55℃保持５時間、降温４時間の養生を行
って成形し、軽量コンクリート成形体とした。Example 1 400 parts by weight of cement (manufactured by Mitsubishi Materials), 100 parts by weight of slag fine powder (manufactured by Nippon Steel Chemical Co., Ltd.), and 30 parts by weight of silica fume (manufactured by Nippon Heavy Industries, Ltd.) and 30 parts by weight of inorganic components were simultaneously charged into a mixer. After mixing for 30 seconds, add 333 parts by weight of artificial lightweight aggregate (manufactured by Sunlight), mix for 30 seconds, and then use an aqueous solution containing 3.5 parts by weight of an aromatic sulfonic acid compound-based high-performance water reducing agent (manufactured by Pozoris). Add 188.5 parts by weight and mix for 1 minute and 30 seconds. After mixing 105 liters of the foam generated in advance, the mixture was kneaded for 2 minutes and 30 seconds, and then poured into a mold. After the completion of molding, 4 hours in advance, 3 hours at normal temperature as steam curing, 55 hours at 55 ° C. Curing was performed for 4 hours at a temperature lowering to form a lightweight concrete molded body.
【００１９】比較例１は、実施例１の気泡を増量したも
ので、比較例２は、実施例１の気泡を省いたものであ
る。比較例３は、実施例１の結合材をセメント単体とし
て気泡を省いたものである。比較例４は、人工軽量骨材
としてセラビオボ−ルを使用しメラミン系高性能減水剤
を使用したものである。成形の手順と手法は、実施例１
に準じて実施したものである。その調合を表２に示す。In Comparative Example 1, the amount of bubbles in Example 1 was increased, and in Comparative Example 2, the bubbles in Example 1 were omitted. In Comparative Example 3, air bubbles were omitted by using the binder of Example 1 as a cement alone. In Comparative Example 4, Celabioball was used as an artificial lightweight aggregate, and a melamine-based high-performance water reducing agent was used. The molding procedure and method are described in Example 1.
It was carried out according to. The formulation is shown in Table 2.
【００２０】表２Table 2
【００２１】実験の結果は表３に示すとおりである。The results of the experiment are shown in Table 3.
【００２２】表３Table 3
【００２３】このように、本発明により得られる軽量コ
ンクリート成形体は、軽量で強度に優れており、建築
物、構築物の材料として各種用途に適し、基礎部分及び
構造柱等の大幅な簡便化が図れ、省資源化が可能とな
る。As described above, the lightweight concrete molded product obtained by the present invention is lightweight and excellent in strength, is suitable for various uses as a material of a building or a building, and greatly simplifies a foundation portion and a structural column. It is possible to save resources.
【００２４】[0024]
【発明の効果】以上説明したように、本発明によれば、
次に列挙するような利点を有する高強度な軽量コンクリ
ート成形体が得られる。As described above, according to the present invention,
A high-strength lightweight concrete molding having the following advantages can be obtained.
【００２５】１．従来の軽量並びに気泡コンクリート製
品にはない各種特性のほか、大型板や複雑な形状の軽量
コンクリート製品が得られるとともに、強度の増大によ
って部材の軽量化と部材厚の縮小化が可能となる。1. In addition to the conventional lightweight and various properties not found in cellular concrete products, a large-sized plate or a lightweight concrete product having a complicated shape can be obtained, and the increase in strength makes it possible to reduce the weight and the thickness of the member.
【００２６】２．材料の分離もなく、流し込み後の表面
仕上げが簡単でコテ押さえで済み、かつ高温高圧蒸気養
生を用いることなく常圧蒸気養生ですむので作業効率が
向上するとともに、均一の品質の製品が得られる。2. There is no separation of materials, the surface finish after casting is simple, ironing is sufficient, and normal-pressure steam curing can be performed without using high-temperature and high-pressure steam curing, improving work efficiency and obtaining a product of uniform quality. .
【００２７】３．人工軽量骨材と結合材及び気泡の最適
な組み合わせによる結果、軽量であっても従来の軽量コ
ンクリートに比べて強度が高く、製品の角欠けやひびわ
れがなく、美的外観のすぐれた製品となる。3. As a result of the optimal combination of the artificial lightweight aggregate, the binder, and the air bubbles, the product has a higher strength than conventional lightweight concrete, has no corner chipping or cracking, and has an excellent aesthetic appearance even when it is lightweight.
【００２８】４．高強度であるため、部材の大幅な軽量
化が可能となり、建築物の骨組みが軽減され、また、全
般的な軽量化が図れることから、基礎部分の構築が大幅
に簡便となり、省資源化が可能となる。4. Because of its high strength, it is possible to significantly reduce the weight of members, reduce the framework of the building, and reduce the overall weight, making the construction of the foundation much easier and saving resources. It becomes possible.
【００２９】５．微細な独立気泡が内在しているため、
耐凍害性に優れており、製品は、内部に気泡を有する人
工軽量骨材と微細な独立気泡があるため、断熱性に優れ
ている。5. Because there are fine closed cells inside,
The product has excellent frost damage resistance, and the product has excellent heat insulating properties due to the artificial lightweight aggregate having bubbles inside and fine closed cells.
【００３０】この製品を建築物に使用すると運賃コスト
や建築物の骨組み量などが大幅に少なくなることから、
トータルコストが大幅に安くなり省資源化が図れる。When this product is used for a building, the fare cost and the amount of frame of the building are greatly reduced.
Total cost is greatly reduced, and resource saving can be achieved.
【図１】各種骨材による気乾比重と圧縮強度との関係を
示した図である。FIG. 1 is a diagram showing a relationship between an air-dry specific gravity and a compressive strength of various aggregates.
【表２】 [Table 2]
【表３】 [Table 3]
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｃ０４Ｂ 111:40 ──────────────────────────────────────────────────続 き Continued on front page (51) Int.Cl. 6 Identification code FI C04B 111: 40
Claims (1)
質よりなる合成材と、絶乾比重0.3〜0.7 の人工軽量骨
材とを混合し、これに、合成材に対して0.7 〜1.0 重量
％の高性能減水剤を用い、これを水溶液として、あるい
は水とともに添加混合し、これらの混合物に、コンクリ
ート１ｍ3 につき50〜300 リットルの微細な気泡を混入
混合して成形し、常圧蒸気養生することを特徴とする、
成形体の気乾比重が0.8 〜1.20、圧縮強度が 150〜300
kgf ／cm2 である、高強度軽量コンクリート成形体の製
造方法。A synthetic material comprising cement, slag fine powder and a mineral component sediment is mixed with an artificial lightweight aggregate having an absolute dry specific gravity of 0.3 to 0.7, and 0.7 to 1.0% by weight based on the synthetic material. using superplasticizer, which as an aqueous solution, or added and mixed with water, the mixture thereof, that mixed mixture of fine voids of 50 to 300 liters per concrete 1 m 3 was molded and cured atmospheric air Characterized by
Air dried specific gravity of molded product is 0.8-1.20, compressive strength is 150-300
A method for producing a high-strength lightweight concrete molding having a kgf / cm 2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9301397A JPH10273355A (en) | 1997-03-27 | 1997-03-27 | Production of highly strong lightweight concrete molded product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9301397A JPH10273355A (en) | 1997-03-27 | 1997-03-27 | Production of highly strong lightweight concrete molded product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10273355A true JPH10273355A (en) | 1998-10-13 |
Family
ID=14070565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9301397A Pending JPH10273355A (en) | 1997-03-27 | 1997-03-27 | Production of highly strong lightweight concrete molded product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10273355A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103496920A (en) * | 2013-09-25 | 2014-01-08 | 厦门市建筑科学研究院集团股份有限公司 | Foam concrete block as well as production method thereof |
| CN103508711A (en) * | 2012-06-28 | 2014-01-15 | 沈阳红姗石建筑装饰材料有限公司 | High-performance foam concrete insulation board and preparation method thereof |
-
1997
- 1997-03-27 JP JP9301397A patent/JPH10273355A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103508711A (en) * | 2012-06-28 | 2014-01-15 | 沈阳红姗石建筑装饰材料有限公司 | High-performance foam concrete insulation board and preparation method thereof |
| CN103496920A (en) * | 2013-09-25 | 2014-01-08 | 厦门市建筑科学研究院集团股份有限公司 | Foam concrete block as well as production method thereof |
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