JPH04149077A - Molded body of lightweight concrete and its production - Google Patents
Molded body of lightweight concrete and its productionInfo
- Publication number
- JPH04149077A JPH04149077A JP2270041A JP27004190A JPH04149077A JP H04149077 A JPH04149077 A JP H04149077A JP 2270041 A JP2270041 A JP 2270041A JP 27004190 A JP27004190 A JP 27004190A JP H04149077 A JPH04149077 A JP H04149077A
- Authority
- JP
- Japan
- Prior art keywords
- binder
- weight
- cement
- slag
- lightweight concrete
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000011230 binding agent Substances 0.000 claims abstract description 17
- 239000004568 cement Substances 0.000 claims abstract description 13
- 239000002893 slag Substances 0.000 claims abstract description 12
- 239000010881 fly ash Substances 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 230000005484 gravity Effects 0.000 claims abstract description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 9
- -1 ether compound Chemical class 0.000 claims description 8
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- 239000002994 raw material Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000000843 powder Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000009415 formwork Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000002956 ash Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000006187 pill Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
Classifications
-
- 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
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、原料中にポリカルボン酸エーテル系の化合物
を使用し、常圧蒸気養生により製造する、新規な軽量コ
ンクリートおよびその製造方法に関するものである。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a novel lightweight concrete produced by using a polycarboxylic acid ether compound as a raw material and by atmospheric pressure steam curing, and a method for producing the same. It is.
（従来の技術及び発明か解決しようとする課題）従来、
軽量コンクリ−１・とよばれているコンクリートには各
種のものがあるが、それらは−般に、固練りコンクリー
トであるとともにスランプが小さいため、成形にあたっ
ては振動機等を用いて強く締め込みを行なう必要があり
、また、コテ等を用いて表面仕上げをしなければならず
、それらか成形コストを増加させる要因となっていた。(Prior art and invention or problem to be solved) Conventionally,
There are various types of concrete called lightweight concrete 1, but they are generally hard-mixed concrete and have a small slump, so they must be tightly tightened using a vibrator etc. when forming. In addition, it is necessary to perform surface finishing using a trowel or the like, which increases the molding cost.
この問題の解決策として、スランプを大きくして作業性
を向上させるため、水の使用量を多くするなどの方法が
擁られてきたが、これは強度の低下をもたらすばかりで
なく、材料の分離の原因ともなるので、セメントの使用
量を増して強度を確保したり、材料の分離を防ぐために
増粘剤を混入するようにしていた。しかし、それらの対
処方法では、コストを更に高めるという欠点を生ずるこ
ととなっていた。As a solution to this problem, methods such as increasing the amount of water used in order to increase the slump and improve workability have been advocated, but this not only leads to a decrease in strength but also causes separation of the material. Therefore, the amount of cement used was increased to ensure strength, and thickeners were mixed in to prevent material separation. However, these countermeasures have the drawback of further increasing costs.
一方、振動機を用いると、化粧用のタイルを施すもので
は、化粧用タイルがずれたり、また、モルタル分がタイ
ル表面に滲み出すなどへして、美的な成形体を得ること
ができなかった。On the other hand, when using a vibrator to apply decorative tiles, it was not possible to obtain an aesthetically pleasing molded product because the decorative tiles would shift or the mortar would ooze out onto the tile surface. .
したがって、当該技術分野では、これらの欠点を解消す
るための技術手段の開発が望まれていた。Therefore, there has been a desire in this technical field to develop technical means to eliminate these drawbacks.
本発明は、上記従来技術の問題点を解決し、作業性かよ
く美的良品を成形することのできる、高品質の新規な軽
量コンクリート成形体およびその製造方法を提供しよう
とするものである。The present invention aims to solve the above-mentioned problems of the prior art and to provide a novel lightweight concrete molded body of high quality and a method for manufacturing the same, which can be molded into a good-looking product with good workability.
（課題を解決するための手段）
本発明者等は、上言己の目的を達成すへく、原料物質の
最適な組合せ、並びに、スランプが大きく、スランプロ
スも少なく振動機の使用できる範囲を長時間維持でき、
作業性も良く美的良品を成形することについて、鋭意研
究を重ねた結果、オートクレーブなどの高圧蒸気養生を
用いることなく、常圧蒸気養生により優れた物性を示す
新規な成形体を得ることに成功した。(Means for Solving the Problems) In order to achieve the above-mentioned objectives, the present inventors have determined the optimum combination of raw materials and the range in which the vibrator can be used with large slump and small slump loss. Can be maintained for a long time,
As a result of intensive research into molding products that are both easy to work with and aesthetically pleasing, we succeeded in obtaining a new molded product that exhibits superior physical properties through atmospheric pressure steam curing without using high-pressure steam curing such as an autoclave. .
すなわち、本発明は、セメント、フライアラン、−Ｉお
よびスラグよりなる結合材と軽量骨材とを混合し、これ
に結合材重量に対して０．１〜１０重量％のポリカルボ
ン酸エーテル系の化合物を用い、これを水溶液として、
あるいは、水とともに添加混合し、常圧蒸気養生して成
形することを特徴とする、新規な軽量コンクリート成形
およびその製造方法である。That is, in the present invention, a binder made of cement, flyalan, -I, and slag is mixed with lightweight aggregate, and 0.1 to 10% by weight of polycarboxylic acid ether based on the weight of the binder is added to the mixture. Using a compound and making it into an aqueous solution,
Alternatively, it is a novel lightweight concrete molding and its manufacturing method characterized by adding and mixing with water and molding by curing with atmospheric pressure steam.
本発明により、後に詳述する従来の軽量コンクリート板
では得られなかった各種の特性のほか、大型板や複雑な
形状の軽量コンクリ−）・の製品も得られるという特有
の利点が得られることになる。The present invention has the unique advantage of being able to provide large-sized plates and lightweight concrete products with complex shapes, in addition to various properties not available with conventional lightweight concrete plates, which will be detailed later. Become.
本発明に係る成形体の原料は、セメント、フライアッシ
ュ、およびスラグよりなる結合材と、軽量骨材およびポ
リカルボン酸エーテル系化合物とよりなる。この原料成
分の好ましい配分割合は、下記表−１に示されるとおり
である。詳細な割合は、使用目的に応して、この好まし
い配合割合の内から、仕合に、適宜選択されるが、表−
Ｊに示す好ましい配合範囲は、かさ比重か１．６〜２０
の範囲の配合で、圧縮強度が非常に優れていることが実
験の結果判明したものである。The raw material for the molded article according to the present invention is composed of a binder made of cement, fly ash, and slag, a lightweight aggregate, and a polycarboxylic acid ether compound. The preferred distribution ratio of these raw material components is as shown in Table 1 below. The detailed proportions are appropriately selected from among these preferred blending proportions depending on the purpose of use, but the table below
The preferred blending range shown in J is a bulk specific gravity of 1.6 to 20.
As a result of experiments, it was found that the compressive strength was very good when the composition was within the range of .
水
セメント
フライアッシュ
スラグ（微粉）
砕砂
軽量骨材
ポリカルホン酸
エーテル系化合物
表−１
（重量部）
２００〜２２０
２５０〜３００
１２０〜１８０
２５０〜３００
０〜６００
４００〜９００
０．１〜１０
に９ｒ／２３
〜１−
・： 結合材
ン Ｉ
」
シ
〉
（結合材に対す
る重量％）
上記表−Ｉの配合割合によれば、セメント、フライアッ
シュおよびスラグ微粉の適正な組合せによるのは勿論の
こと、フライアッシュおよびスラグ微粉のヘアリング効
果が相乗的に作用するうえ、ポリカルボン酸エーテル系
化合物の作用により、単位水量か少ないにもかかわらず
、スランプか大きく、分離か少ないうえ、高強度の軽量
コンクリート成形体が得られる。Water cement fly ash slag (fine powder) crushed sand lightweight aggregate polycarphonic acid ether compound Table 1 (parts by weight) 200-220 250-300 120-180 250-300 0-600 400-900 0.1-10 to 9r/ 23 ~1- ・: Binding material (% by weight relative to binding material) According to the mixing ratios in Table I above, it is obvious that the proper combination of cement, fly ash, and fine slag powder can The hairring effects of ash and slag fine powder act synergistically, and the action of polycarboxylic acid ether compounds allows for high-strength lightweight concrete molding with large slump and little separation despite the small amount of water per unit. You get a body.
本発明の製造方法において使用する原料の種類および量
は、上記表−１に示すとおりである。The types and amounts of raw materials used in the production method of the present invention are as shown in Table 1 above.
本発明の製造方法は、上記原料を均一に混合して軽量コ
ンクリートとする練り混ぜ工程と、これを型枠に流し込
む成形工程とおよび常圧蒸気養生を行なう工程の三つの
主要工程からなっている。The manufacturing method of the present invention consists of three main steps: a mixing step in which the above-mentioned raw materials are uniformly mixed to form lightweight concrete, a forming step in which the concrete is poured into a mold, and a step in which atmospheric pressure steam curing is performed. .
まず、第一工程として、原料のセメント、フライアッシ
ュおよびスラグよりなる結合材と軽量骨材を均一に混合
し、これに、結合材重量に対して、０．１〜１．０重量
％のポリカルボン酸エーテル系化合物を水溶液として、
あるいはこれを水と同時に添加した後、均一に練り混ぜ
て軽量コンクリートとする。First, in the first step, a binder consisting of cement, fly ash, and slag as raw materials is mixed uniformly with lightweight aggregate, and 0.1 to 1.0% by weight of polyester is added to the binder, based on the weight of the binder. A carboxylic acid ether compound as an aqueous solution,
Alternatively, this can be added at the same time as water and then mixed uniformly to make lightweight concrete.
次に、第三上程として、均一に練り混ぜ合え０られたに
記軽峨コンクリートを、Ｉ・レミーカ式あるいは注入方
式なとの方法によっで、型佇に静かに打込む。その際、
巻き込みエヤーが入らないよう性懲する。Next, as the third step, the light concrete that has been kneaded and mixed evenly is gently poured into the mold using a method such as the I. Remica method or the pouring method. that time,
Discipline to prevent entrainment air from entering.
最後に、第三上程として、型枠に流し込まれたコンクリ
ートを、常圧蒸気養生する。養生時間は、コンクリート
を型枠に流し込んで３〜４時間萌置装生し１こ後、３〜
４時間かけて６０°〜７０℃まで昇温し、６０゛ 〜７
０℃の温度を４時間保持し、次いて３〜４時間かけて室
温まで降温する。この鹿圧蒸気養生によって、軽量コン
クリートの強度を早く高くすることができる。Finally, as the third step, the concrete poured into the formwork is cured with normal pressure steam. The curing time is 3 to 4 hours after pouring the concrete into the formwork and 3 to 4 hours.
The temperature was raised to 60° to 70°C over 4 hours, and the temperature was increased to 60° to 70°C.
The temperature of 0° C. is maintained for 4 hours, and then the temperature is lowered to room temperature over 3 to 4 hours. The strength of lightweight concrete can be quickly increased by this steam curing.
（実施例）
以下に、実施例および比較例を示して、本発明を更に詳
しく説明する。(Example) Below, the present invention will be explained in more detail by showing Examples and Comparative Examples.
実施例 １
セメント（三菱鉱業製）２６０重量部、フライアッシュ
（首部工業製）１５０重Ｍ部、スラグ微粉（新１］本製
鉄化学製）２６５重量部をミキサーに同時に投入し３０
秒混合後、砕砂５０重量部を投入し１５秒混合後、軽量
骨材（［ヨ本メサライト工業製） ８１３１ｇ量部を
投入し１５秒混合した後、ポリカルホン酸エーテル系の
化合物（日曹マスターピルダーズ製：レオピルド５Ｐ−
８Ｎ）を、結合材に対して０５５重量％を含んだ水溶液
２０８市量部を投入し１分３０混合合しｎ抜型枠７こ流
し込み、成形終了後、前置き４時間後にＷ温３〜４時間
、６０〜７０’Ｃの保持４時間、降温４時間の常圧蒸気
養生を行って成形し、軽量コンクリート成形体とした。Example 1 260 parts by weight of cement (manufactured by Mitsubishi Mining Co., Ltd.), 150 parts by weight of fly ash (manufactured by Kubbe Kogyo), and 265 parts by weight of slag fine powder (Shin 1) manufactured by Honsetsu Kagaku were simultaneously charged into a mixer for 30 minutes.
After mixing for seconds, 50 parts by weight of crushed sand was added, mixed for 15 seconds, 8131 g of lightweight aggregate (manufactured by Yomoto Mesalite Kogyo) was added and mixed for 15 seconds, and then a polycarphonic acid ether compound (Nisso Master Pill) was added and mixed for 15 seconds. Manufactured by Daz: Leopild 5P-
Add 208 parts of an aqueous solution containing 055% by weight to the binder, mix for 1 minute and 30 minutes, pour into 7 cutting molds, and after completion of molding and 4 hours in advance, heat at W temperature for 3 to 4 hours. A lightweight concrete molded body was obtained by performing normal pressure steam curing at 60 to 70'C for 4 hours and lowering the temperature for 4 hours.
比較例 １
セメント ５００重量部、砕砂２５０重量部をミキサー
に同時に投入し３０秒混合後、軽量骨材８００重量部を
投入して１５秒混合した後、市販品へ減水剤を結合材に
対して１．０重量％Φ水溶液２２５重量部を投入し、１
分３０混合合した後に、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３〜４時間、
６０〜７０℃の保持４時間、降温４時間の養生を行って
成形し、軽４１コンク１ノートとした。Comparative Example 1 500 parts by weight of cement and 250 parts by weight of crushed sand were simultaneously charged into a mixer and mixed for 30 seconds, then 800 parts by weight of lightweight aggregate was added and mixed for 15 seconds, and a water reducing agent was applied to the binder as a commercial product. Add 225 parts by weight of 1.0% by weight Φ aqueous solution,
After mixing for 30 minutes, pour it into the mold, and after the molding is finished,
4 hours in advance, 3 to 4 hours of temperature rise as normal pressure steam curing,
The product was cured at 60 to 70° C. for 4 hours and cooled for 4 hours, and then molded into Light 41 Conk 1 Note.
実施例２３及び比較例２．３
−１．記実施例１及び比較例１の手法に準じ、表２に示
した各種材料と配合頃を用いて実施例２．３及び比較例
２．３を行った。Example 23 and Comparative Example 2.3-1. Example 2.3 and Comparative Example 2.3 were conducted according to the methods of Example 1 and Comparative Example 1, using the various materials and blending times shown in Table 2.
結果は、表−２に示すとおりである。The results are shown in Table-2.
（以下余白）
上記の表−２により明らかなように、テーブルフローは
、実施例では練り混ぜ３０分後においても １７ＯＮで
あるか、比較例では１０５ｕであり６５ｘｉの差がある
ことが認められる。また、圧縮強度は、材令２ｇＢで、
実施例は４２０に９ｒ／ｃｘ２比較例は３８０ｋＮ７ｃ
ｍ’であり、その差は４０ｋｇｆ／ｃＲ’であることか
認められる。(The following is a margin) As is clear from Table 2 above, the table flow is 17ON even after 30 minutes of kneading in the examples, or 105u in the comparative examples, which is a difference of 65xi. In addition, the compressive strength is 2 gB,
Example is 420, 9r/cx2 Comparative example is 380kN7c
m', and it is recognized that the difference is 40 kgf/cR'.
（発明の効果）
以上説明したように、本発明により得られる軽量コンク
リート成形体は、軽量でしかも強度に優れており、建築
物、構築物材料として、各種用途に適するものであって
、その利点を挙げると次のとおりである。(Effects of the Invention) As explained above, the lightweight concrete molded product obtained by the present invention is lightweight and has excellent strength, and is suitable for various uses as a material for buildings and structures. The following are examples.
（１）ポリカルボン酸エーテル系の化合物の添加によっ
て、単位水量の使用量が減少する。(1) By adding a polycarboxylic acid ether compound, the amount of water used per unit amount is reduced.
（２）従来の軽量コンクリートに比べて強度が高い
（３）成形時のコンクリートの流動性に優れているので
、
ａ、コンクリートの打設および流し込みが容易となり、
振動機を使用するこよなく成形することができるととも
に、良好な作業環境が得られる。(2) It has higher strength than conventional lightweight concrete (3) The fluidity of concrete during forming is excellent, so a. It is easier to place and pour concrete;
Not only can molding be carried out using a vibrator, but also a good working environment can be obtained.
ｂ、コンクリート打設後の表面仕」二げか簡単なコテお
さえでずみ、作業効率か向上する。b. Finishing the surface after pouring concrete can be done with a simple trowel, improving work efficiency.
Ｃ１材料の分離がなく、スランプロスもなく、長時間の
流動性の維持かできる。There is no separation of C1 material, no slump loss, and fluidity can be maintained for a long time.
ｄ、コンクリートの打設および流し込みによる成形時に
おいて、振動機を使用しないために、型枠面の仕上げ材
のタイル等の移動がなく、美的かつ良品の成形体ができ
る。d. Since a vibrator is not used during casting and pouring of concrete, there is no movement of finishing materials such as tiles on the formwork surface, resulting in an aesthetically pleasing and high-quality molded product.
（４）フライアッシュおよびスラグを結合材の一部とし
て用いるため、セメントのみの結合材と比較して原料コ
ストか低減される。(4) Since fly ash and slag are used as part of the binder, raw material costs are reduced compared to cement-only binders.
Claims (2)
結合材と軽量骨材との混合物と、上記結合材重量に対し
て０．１〜１．０重量％のポリカルボン酸エーテル系の
化合物とを含有することを特徴とする、かさ比重１．６
〜２．０の軽量コンクリート成形体。(1) Contains a mixture of a binder made of cement, fly ash, and slag and lightweight aggregate, and a polycarboxylic acid ether compound in an amount of 0.1 to 1.0% by weight based on the weight of the binder. The bulk specific gravity is 1.6.
~2.0 lightweight concrete molded body.
結合材と軽量骨材とを混合し、これに、上記結合材重量
に対して０．１〜１．０重量％のポリカルボン酸エーテ
ル系の化合物を用い、これを水溶液として、あるいは、
水とともに添加混合して成形し、常圧蒸気養生して成形
することを特徴とする、かさ比重１．６〜２．０の軽量
コンクリート成形体の製造方法。(2) Mix a binder made of cement, fly ash, and slag with lightweight aggregate, and add 0.1 to 1.0% by weight of a polycarboxylic acid ether compound based on the weight of the binder. Use this as an aqueous solution, or
A method for producing a lightweight concrete molded body having a bulk specific gravity of 1.6 to 2.0, characterized by adding and mixing with water, molding, and curing with normal pressure steam to mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27004190A JP2879258B2 (en) | 1990-10-08 | 1990-10-08 | Lightweight concrete compact and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27004190A JP2879258B2 (en) | 1990-10-08 | 1990-10-08 | Lightweight concrete compact and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04149077A true JPH04149077A (en) | 1992-05-22 |
| JP2879258B2 JP2879258B2 (en) | 1999-04-05 |
Family
ID=17480710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27004190A Expired - Fee Related JP2879258B2 (en) | 1990-10-08 | 1990-10-08 | Lightweight concrete compact and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2879258B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06122569A (en) * | 1992-10-14 | 1994-05-06 | Tokai Concrete Kogyo Kk | High-strength lightweight concrete product |
| JPH06127987A (en) * | 1992-10-22 | 1994-05-10 | Kao Corp | Concrete composition |
| JPH07291700A (en) * | 1994-04-28 | 1995-11-07 | Unyusho Kowan Gijutsu Kenkyusho | Concrete for rolling pavement |
-
1990
- 1990-10-08 JP JP27004190A patent/JP2879258B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06122569A (en) * | 1992-10-14 | 1994-05-06 | Tokai Concrete Kogyo Kk | High-strength lightweight concrete product |
| JPH06127987A (en) * | 1992-10-22 | 1994-05-10 | Kao Corp | Concrete composition |
| JPH07291700A (en) * | 1994-04-28 | 1995-11-07 | Unyusho Kowan Gijutsu Kenkyusho | Concrete for rolling pavement |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2879258B2 (en) | 1999-04-05 |
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