JPS63195179A - Manufacture of lightweight concrete panel - Google Patents

Manufacture of lightweight concrete panel

Info

Publication number
JPS63195179A
JPS63195179A JP2784687A JP2784687A JPS63195179A JP S63195179 A JPS63195179 A JP S63195179A JP 2784687 A JP2784687 A JP 2784687A JP 2784687 A JP2784687 A JP 2784687A JP S63195179 A JPS63195179 A JP S63195179A
Authority
JP
Japan
Prior art keywords
lightweight concrete
mortar
formwork
panel
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.)
Pending
Application number
JP2784687A
Other languages
Japanese (ja)
Inventor
今野 尚雄
秀男 田中
石井 元司
公一 長瀬
一 村上
戸祭 邦之
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taisei Corp
Japan Metals and Chemical Co Ltd
Original Assignee
Taisei Corp
Japan Metals and Chemical Co Ltd
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 Taisei Corp, Japan Metals and Chemical Co Ltd filed Critical Taisei Corp
Priority to JP2784687A priority Critical patent/JPS63195179A/en
Publication of JPS63195179A publication Critical patent/JPS63195179A/en
Pending legal-status Critical Current

Links

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は軽量コンクリートパネルの製造法であって、生
産性が高く、しかも表面性状が良好で、かつ、強度の高
い軽量コンクリートパネルを製造する方法に関するもの
である。
[Detailed Description of the Invention] [Industrial Application Field] The present invention is a method for manufacturing lightweight concrete panels, and is a method for manufacturing lightweight concrete panels with high productivity, good surface quality, and high strength. It is about the method.

[従来の技術] 従来、軽量コンクリートパネルを製造する方法として、
珪酸石灰系材料を型枠に流し込み、発泡、凝固した後切
断し、オートクレーブで養生硬化されたもの(ALC)
及びセメント系材料に軽量骨材9発泡液を混合撹拌し、
これを型枠に流込む方法(特開昭61m397179号
公報)等が知られている。
[Conventional technology] Conventionally, as a method for manufacturing lightweight concrete panels,
Lime silicate material is poured into a mold, foamed, solidified, cut, and cured in an autoclave (ALC).
and mixing and stirring lightweight aggregate 9 foaming liquid with cement-based material,
A method of pouring this into a mold (Japanese Unexamined Patent Publication No. 1983-397179) is known.

[本発明が解決しようとする問題点] 前述従来のALCの製造方法は、化学反応を利用して気
泡を形成させるもので、この場合型枠に流込んで成形し
た後においても気泡の形成が継続し、従って型表面に気
泡が露出したり、また品質にかなりのバラツキがあると
いう欠点がある。
[Problems to be Solved by the Present Invention] The conventional ALC manufacturing method described above uses a chemical reaction to form bubbles, and in this case, even after pouring into a mold and molding, bubble formation does not occur. However, there are disadvantages in that air bubbles are exposed on the mold surface and the quality varies considerably.

また、後者の方法は前述ALCの製造方法の如き、型枠
に流込んだ後も気泡の形成が継続することはないが、型
枠に流込んむ際かなりの気泡をまき込み、その結果成形
後強度にかなりのバラツキがあるという欠点がある。
In addition, although the latter method does not continue to form air bubbles even after being poured into the mold as in the ALC manufacturing method described above, a considerable amount of air bubbles are thrown in when it is poured into the mold, resulting in molding. The disadvantage is that there is considerable variation in the post-strength.

また、従来コンクリートパネルを成形する場合の型枠は
、パネルの面を床面に載置し、平らな状態とした後、を
枠にコンクリートモルタルを流込んで成形している。
Furthermore, conventional formwork for forming concrete panels involves placing the panel face on the floor to make it flat, and then pouring concrete mortar into the frame to form the form.

しかし、このように型枠が平らな状態であるときは、多
数のパネルを成形する際広い作業面を必要とするばかり
か、型枠に流込んだモルタルの上面を仕上げるのに手間
がかかり、また型枠を垂直にした場合はモルタル流込み
の際気泡をまき込み表面性状の良好なパネルを得ること
ができない。
However, when the formwork is in a flat state like this, not only does it require a large work surface when forming a large number of panels, but it also takes time and effort to finish the top surface of the mortar poured into the formwork. Furthermore, if the formwork is vertical, air bubbles will be mixed in when pouring the mortar, making it impossible to obtain a panel with good surface quality.

本発明は前述従来の如き欠点を改善し、表面性状が良好
で、かつ、強度、比重のバラツキのない軽量コンクリー
トパネルを高能率で製造テきる方法を提供することにあ
る。
The present invention aims to improve the above-mentioned conventional drawbacks and to provide a highly efficient method for manufacturing lightweight concrete panels with good surface properties and consistent strength and specific gravity.

[問題点を解決するための手段] 本発明は、セメント、骨材、水に樹脂性気泡液を混合し
て比重0.5〜0.8程度の軽量コンクリートパネルを
製造するに当り、軽量コンクリートモルタル1rrl当
り、樹脂性気泡液380〜5207!、セメント360
〜500 kg並びに骨材及び水を加えて混練して軽量
コンクリートモルタルヲ生成し、該軽量コンクリートモ
ルタルの練上り状態の流動性が、Pロート値で14〜8
0秒のものを型枠に流込んでパネルを成形するという構
成のものからなる軽量コンクリートパネルの製造法であ
る。
[Means for Solving the Problems] The present invention provides a method for producing lightweight concrete panels having a specific gravity of about 0.5 to 0.8 by mixing cement, aggregate, and water with a resin foam liquid. Resin foam liquid 380-5207 per rrl of mortar! , cement 360
~500 kg, aggregate and water are added and kneaded to produce a lightweight concrete mortar, and the fluidity of the light concrete mortar in the kneaded state is 14 to 8 in P funnel value.
This is a method for manufacturing lightweight concrete panels that consists of pouring concrete into a mold for 0 seconds to form the panel.

[作  用] 本発明は以上の如き構成のものからなり、蕊に使用する
セメントは普通使用されているポルトランドセメントが
用いられる。この場合、セメントはこれに樹脂性発泡液
から製造した気泡液、骨材及び水を加えて得られる軽量
コンクリートモルタルIWI当り、360〜500kg
となる様に調整する。360kg/rrl以下では圧縮
強度が不足し、また500に9/r1以上では比重が大
きく、またコスト高となるため好ましくない。
[Function] The present invention is constructed as described above, and the cement used for the stamens is commonly used Portland cement. In this case, the cement is 360 to 500 kg per lightweight concrete mortar IWI obtained by adding foam liquid produced from resin foam liquid, aggregate, and water.
Adjust so that If it is less than 360 kg/rrl, the compressive strength will be insufficient, and if it is more than 500/9/r1, the specific gravity will be large and the cost will be high, which is not preferable.

また、本発明における気泡液は、メラミンスルホン酸ナ
トリウムのホルマリン縮合物、ホリビニルアルコール、
アクリル、メタアクリル。
In addition, the foam liquid in the present invention includes a formalin condensate of sodium melamine sulfonate, folivinyl alcohol,
Acrylic, methacrylic.

ウレタン等の水溶性又はエマルジョン樹脂の1種又は2
種以上の樹脂に、ポリオキシエチレンアルキルフェニル
エーテル、ソジウムアル7オンオレインスルホン酸ナト
リウム等の起泡剤、メチルセルロ゛−ス、カゼイン、ア
ラビヤゴム等の気泡安定剤と混合したものを水に混合し
10〜30倍に発泡して得られた樹脂性気泡液である。
One or two water-soluble or emulsion resins such as urethane
A mixture of at least one resin, a foaming agent such as polyoxyethylene alkyl phenyl ether, sodium sodium chloride olein sulfonate, and a foam stabilizer such as methyl cellulose, casein, gum arabic, etc. is mixed with water for 10 to 10 minutes. This is a resin foam liquid obtained by foaming 30 times.

前記樹脂性気泡液は、骨材等を配合して形成した軽量コ
ンクリートモルタルlr/当り380〜5201となる
様に調整する。この場合3801/d以下では、良質の
軽量骨材を多量に使用しなければならず、また、520
1/rr1以上では高い圧縮強度が得られない。尚、配
合原料として必要に応じて減水剤、凝結促進剤、 遅延
剤。
The resin foam liquid is adjusted to have an amount of 380 to 520 lr/lr of lightweight concrete mortar formed by blending aggregate and the like. In this case, for 3801/d or less, a large amount of high quality lightweight aggregate must be used, and 520
If it is 1/rr1 or more, high compressive strength cannot be obtained. In addition, water reducing agents, setting accelerators, and retardants are added as necessary as blended raw materials.

収縮防止剤等の添加剤が配合使用できる。Additives such as anti-shrinkage agents can be used in combination.

本発明で使用する軽量コンクリートモルタルは、以上の
如き配合のものに、さらにPロート値が14〜80秒の
流動性のものである。
The lightweight concrete mortar used in the present invention has the above-mentioned composition and is fluid with a P funnel value of 14 to 80 seconds.

周知のようにPロート値とは、プレパツクドコンクリー
ト用モルタルのコンシスチンシー試験に用いられるもの
である。即ち、プレパツクドコンクリート用に使用する
モルタルは、骨材ヲ含まない状態のモルタルのコンシス
チンシーを測定するものである。
As is well known, the P funnel value is used for consistency testing of mortar for pre-packed concrete. That is, the consistency of mortar used for prepacked concrete is measured without containing aggregate.

本発明者等は前記軽量コンクリートモルタルの流動性に
つぎ研究の結果、軽量コンクリートパネル成形用のモル
タルの流動性につき、前記Pロート値が14〜80秒の
ものが最適であることを確認した。蕊に、Pロート値が
14秒未満では、流動性が良すぎて型枠に流込んだ後、
モルタルに配合されているセメント、骨材等の分離が起
り、また80秒を超えると型枠に流込む際空気のまき込
みを生じ、何れの場合にも強度、比重等のバラツキを生
ずるため好ましくない。
As a result of research into the fluidity of the lightweight concrete mortar, the present inventors have confirmed that the fluidity of mortar for forming lightweight concrete panels is optimal when the P funnel value is 14 to 80 seconds. However, if the P funnel value is less than 14 seconds, the fluidity is too good and after pouring into the formwork,
Separation of the cement, aggregate, etc. contained in the mortar will occur, and if it exceeds 80 seconds, air will be drawn in when pouring into the formwork, causing variations in strength, specific gravity, etc. in either case, so this is preferable. do not have.

前記の方法によって得られた軽量コンクリートモルタル
は、常法に従って型枠に流込んで軽量コンクリートパネ
ルに成形することができるカ、すらに前記軽量コンクリ
ートモルタルは、適度な流動性を保持しているため、必
らずしも型枠を平らにして流込む必要はない。
The lightweight concrete mortar obtained by the above method can be poured into a formwork and formed into a lightweight concrete panel according to a conventional method, and the lightweight concrete mortar retains appropriate fluidity. , it is not necessarily necessary to flatten the formwork before pouring.

即チ、一般にコンクリートパネルを型枠に流込む場合、
パネルの厚みに相当する部分を垂直にし、平らな状態で
モルタルを流込んでおり、これによってパネルの厚さ方
向の強度のバラツキを可及的に少なくするようになって
いる。
In general, when pouring concrete panels into formwork,
The part corresponding to the thickness of the panel is vertical and the mortar is poured in a flat state, thereby minimizing variations in strength in the thickness direction of the panel.

これに対し、本発明の軽量コンクリートモルタルは、P
ロート値によって適正な流動性を保持できるため、パネ
ルの厚みを水平方向とし、パネルの一面の相対する一組
の辺の内、短かい辺即ち巾に相当する辺を垂直方向にし
て流込むことができる。
On the other hand, the lightweight concrete mortar of the present invention has P
Since proper fluidity can be maintained depending on the funnel value, the thickness of the panel should be set horizontally, and the short side of the pair of opposing sides on one side of the panel, that is, the side corresponding to the width, should be placed vertically. Can be done.

従って、従来コンクリートパネルの成形に当り、型枠を
平坦な状態で流込むことにより、多数のコンクリートパ
ネルを製造するために広い床面積を必要としたのに対し
、本発明では型枠を立てた状態で、しかも多数の型枠を
隣接した状態でコンクリートモルタルを流込むことがで
きるため、型枠に流込む作業場の床面積が僅かで足り、
生産性の向上によりコストを低廉ならしめることができ
る。
Therefore, in conventional concrete panel forming, the formwork was poured in a flat state, which required a large floor area to manufacture a large number of concrete panels, whereas in the present invention, the formwork is erected. Since concrete mortar can be poured in a large number of formworks next to each other, only a small amount of floor space is needed in the workplace for pouring into the formworks.
Costs can be reduced by improving productivity.

また、従来の型枠では、コンクリートパネル表面が広い
ため、表面を仕上げるための手間がかかるのに対し、前
記のように型枠を立てた状態で流込む場合は、空気のま
き込みも少なく、また表面も狭いため表面の仕上げが簡
単であり、更に必要に応じて拘束型枠を使用できるとい
う利点がある。
In addition, with conventional formwork, the surface of the concrete panel is wide, so it takes time to finish the surface, whereas when pouring with the formwork upright as described above, there is less air entrainment. Furthermore, since the surface is narrow, it is easy to finish the surface, and there is also the advantage that restraint formwork can be used if necessary.

[実  施  例コ 以下実施例によって本発明を具体的に説明する。普通ポ
ルトランドセメントに、第1表に示す如き配合割合で、
骨材として粒径3.0〜0.1朋の軽石又はパーライト
、樹脂性気泡液を配合し、ミキサーで混練して軽量コン
クリートモルタルを製造する。
[Example] The present invention will be specifically explained by referring to the following example. Ordinary Portland cement with the mixing ratio shown in Table 1,
Pumice or pearlite with a particle size of 3.0 to 0.1 mm and a resin foam liquid are mixed as aggregates and kneaded with a mixer to produce a lightweight concrete mortar.

尚、前記樹脂性気泡液は、水100重量部にポリオキシ
エチレンアルキルフェニルエーテルo、oz重1に部、
メチルセルロースl、3ffi ffi 部、メラミン
スルホン酸ナトリウムのホルマリン縮合物12重量部及
びウレタン12重量部を添加混合し、発泡機により液重
量の14.7倍に発泡させたものを使用した。
The resin foam liquid contains 100 parts by weight of water and 1 part by weight of polyoxyethylene alkylphenyl ether,
One part of methyl cellulose, 3 ffi ffi parts, 12 parts by weight of a formalin condensate of sodium melamine sulfonate, and 12 parts by weight of urethane were added and mixed, and the mixture was foamed to a volume of 14.7 times the liquid weight using a foaming machine.

ツキに前記軽量コンクリートモルタルを厚さ10−9長
さ180cm、巾75αの型枠に流し込む。この場合の
型枠は厚さ方向を水平にし、巾方向を垂直にして前記モ
ルタルを型枠に流込むO 軽量コンクリートモルタルを型枠に流込んだ後、40°
Cで10時間蒸気養生後脱型し、さらに4週間自然養生
した後、パネルの表面性状を調べると共に、垂直?こ位
置された巾方向の上、中。
Then, pour the lightweight concrete mortar into a formwork with a thickness of 10-9, a length of 180 cm, and a width of 75α. In this case, the mortar is poured into the formwork with the thickness direction horizontal and the width direction vertical. After pouring the lightweight concrete mortar into the formwork, pour the mortar into the formwork at an angle of 40°.
After steam curing for 10 hours at C, the mold was removed, and after natural curing for another 4 weeks, the surface condition of the panel was examined, and was it vertical? This is the top and middle of the width direction.

下のサンプルを採取し、気乾比重及び圧縮強度を測定し
た処、第2表の如き結果を得た。
The samples shown below were taken and their air-dried specific gravity and compressive strength were measured, and the results shown in Table 2 were obtained.

前記第1表及び第2表から明らかなように、p+=−ト
値が80秒を超えると、表面性状、は好ましくなく、ま
た14秒未満では表面性状は改善できるが気乾比重の上
下の差が0.10前後で上下のバラツキが認められる。
As is clear from Tables 1 and 2 above, when the p+=-t value exceeds 80 seconds, the surface quality is unfavorable, and when it is less than 14 seconds, the surface quality can be improved, but the upper and lower air-dry specific gravity The difference is around 0.10, and variations in the top and bottom are observed.

これに対し、Pロート値が14〜80秒である場合は圧
縮強さも高く、気乾比重の上下の差も少なく、またその
表面性状も良好である。尚、骨材パーライトと軽石とは
実質的に差が認められない。
On the other hand, when the P funnel value is 14 to 80 seconds, the compressive strength is high, the difference between the upper and lower air-dried specific gravity is small, and the surface quality is also good. Note that there is virtually no difference between the aggregate pearlite and pumice.

口発明の効果コ 以上の如く本発明は、セメント、骨材、及び水に発泡機
で発泡させた樹脂性気泡液を配合しりII Jtコンク
リートモルタルにおいて、該軽量コンクリートモルタル
1rrI当りの樹脂性気泡液、セメントの配合割合及び
練上げ後のPロート値を規定することによって強度及び
気乾比重のバラツキの少ない良質の軽量コンクリートパ
ネルを得ることができる。
Effects of the Invention As described above, the present invention is characterized by blending cement, aggregate, and water with a resin foam liquid foamed by a foaming machine. By specifying the mixing ratio of cement and the P funnel value after kneading, it is possible to obtain a high-quality lightweight concrete panel with little variation in strength and air-dried specific gravity.

また、本発明の軽量コンクリートモルタルは適正な流動
性とすることができ、従ってパネルの型枠を垂直状態と
し、これにモルタルを流込んだ場合にも強度、気乾比重
のバラツキの少ない製品を得ることかできるから、床面
の少ない場所に於ても簡単にパネルを成形でき、しかも
作業性を大巾に向上でき、従って製造コストを低順なら
しめることができる。
In addition, the lightweight concrete mortar of the present invention can have appropriate fluidity, so even when the panel formwork is placed vertically and the mortar is poured into it, a product with little variation in strength and air-dry specific gravity can be obtained. Since it can be obtained easily, panels can be easily formed even in places with little floor space, work efficiency can be greatly improved, and manufacturing costs can therefore be kept low.

特許出願人  日本重化学工業株式会社同   大成建
設株式会社
Patent applicant Japan Heavy and Chemical Industry Co., Ltd. Taisei Corporation

Claims (1)

【特許請求の範囲】[Claims] セメント、骨材、水に樹脂性気泡液を混合して軽量コン
クリートパネルを製造するに当り、軽量コンクリートモ
ルタル1m^3当り、樹脂性気泡液380〜520l、
セメント360〜500kg並びに骨材及び水を混練し
て軽量コンクリートモルタルを生成し、該軽量コンクリ
ートモルタルの練上り状態の流動性が、Pロート値で1
4〜80秒のものを型枠に流込んでパネルを成形するこ
とを特徴とする軽量コンクリートパネルの製造法。
When manufacturing lightweight concrete panels by mixing resin foam liquid with cement, aggregate, and water, 380 to 520 liters of resin foam liquid per 1 m^3 of lightweight concrete mortar,
A lightweight concrete mortar is produced by kneading 360 to 500 kg of cement, aggregate, and water, and the fluidity of the light concrete mortar in the kneaded state is 1 in P funnel value.
A method for manufacturing a lightweight concrete panel, characterized by forming the panel by pouring it into a formwork for 4 to 80 seconds.
JP2784687A 1987-02-09 1987-02-09 Manufacture of lightweight concrete panel Pending JPS63195179A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2784687A JPS63195179A (en) 1987-02-09 1987-02-09 Manufacture of lightweight concrete panel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2784687A JPS63195179A (en) 1987-02-09 1987-02-09 Manufacture of lightweight concrete panel

Publications (1)

Publication Number Publication Date
JPS63195179A true JPS63195179A (en) 1988-08-12

Family

ID=12232283

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2784687A Pending JPS63195179A (en) 1987-02-09 1987-02-09 Manufacture of lightweight concrete panel

Country Status (1)

Country Link
JP (1) JPS63195179A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01282138A (en) * 1988-05-10 1989-11-14 Ube Ind Ltd Production of foam concrete
JPH03193647A (en) * 1989-12-20 1991-08-23 Daiwa Concrete Kogyo Kk Lightweight aerated concrete formed body and its production

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01282138A (en) * 1988-05-10 1989-11-14 Ube Ind Ltd Production of foam concrete
JPH03193647A (en) * 1989-12-20 1991-08-23 Daiwa Concrete Kogyo Kk Lightweight aerated concrete formed body and its production

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