JPH0568432B2 - - Google Patents
Info
- Publication number
- JPH0568432B2 JPH0568432B2 JP28386285A JP28386285A JPH0568432B2 JP H0568432 B2 JPH0568432 B2 JP H0568432B2 JP 28386285 A JP28386285 A JP 28386285A JP 28386285 A JP28386285 A JP 28386285A JP H0568432 B2 JPH0568432 B2 JP H0568432B2
- Authority
- JP
- Japan
- Prior art keywords
- cement
- weight
- mortar
- manufacturing
- parts
- 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.)
- Expired - Lifetime
Links
- 239000004568 cement Substances 0.000 claims description 55
- 238000000465 moulding Methods 0.000 claims description 27
- 238000004519 manufacturing process Methods 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 22
- 235000013336 milk Nutrition 0.000 claims description 22
- 239000008267 milk Substances 0.000 claims description 22
- 210000004080 milk Anatomy 0.000 claims description 22
- 238000002156 mixing Methods 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 19
- 230000001413 cellular effect Effects 0.000 claims description 14
- 239000004088 foaming agent Substances 0.000 claims description 14
- 239000011083 cement mortar Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
- 239000011398 Portland cement Substances 0.000 claims description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical group [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims 1
- 239000004570 mortar (masonry) Substances 0.000 description 21
- 239000012615 aggregate Substances 0.000 description 12
- 239000002994 raw material Substances 0.000 description 11
- 239000003795 chemical substances by application Substances 0.000 description 8
- 230000005484 gravity Effects 0.000 description 7
- 238000005187 foaming Methods 0.000 description 5
- 238000009415 formwork Methods 0.000 description 4
- 238000004898 kneading Methods 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000006072 paste Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 229910052925 anhydrite Inorganic materials 0.000 description 2
- 229910052918 calcium silicate Inorganic materials 0.000 description 2
- 235000012241 calcium silicate Nutrition 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- -1 aluminum compound Chemical class 0.000 description 1
- 235000021120 animal protein Nutrition 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical group [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- BCAARMUWIRURQS-UHFFFAOYSA-N dicalcium;oxocalcium;silicate Chemical compound [Ca+2].[Ca+2].[Ca]=O.[O-][Si]([O-])([O-])[O-] BCAARMUWIRURQS-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229910021534 tricalcium silicate Inorganic materials 0.000 description 1
- 235000019976 tricalcium silicate Nutrition 0.000 description 1
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
- C04B28/04—Portland cements
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)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は軽量気泡セメント硬化体の製造方法に
係り、特に硬化時間を短縮し、良好な気泡を形成
し得る軽量気泡セメント硬化体の製造方法に関す
る。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for producing a lightweight cured cellular cement, and in particular, a method for producing a lightweight cured cellular cement that can shorten curing time and form good bubbles. Regarding.
［従来の技術］
セメント硬化体は、主にコンクリート構造物や
コンクリート製品として用いられているが、近
年、軽量骨材あるいは気泡を導入することにより
軽量化を図つた、軽量コンクリート、気泡コンク
リートの開発が進められており、その軽量性、断
熱性、防音性等の特性を利用して、建築構造物用
被覆材等への用途が開発されている。[Prior art] Hardened cement is mainly used for concrete structures and concrete products, but in recent years, lightweight concrete and aerated concrete have been developed to reduce weight by introducing lightweight aggregate or air bubbles. Progress is being made in the development of applications such as coating materials for architectural structures, taking advantage of its light weight, heat insulation, and soundproof properties.
軽量コンクリート、気泡コンクリート等の製造
方法には、
骨材としてパーライト、抗火石、スチロポー
ル粒、人工軽量骨材等の軽量骨材を用いる方
法。 The manufacturing method of lightweight concrete, aerated concrete, etc. uses lightweight aggregates such as perlite, anti-firestone, styropol particles, and artificial lightweight aggregates as aggregates.
セメントのアルカリ性を利用してアルミニウ
ムを反応させ、その際の発生ガスにより形成さ
れる気泡をモルタル中に固定する方法
（ALC）。 A method (ALC) that uses the alkalinity of cement to react with aluminum and fixes the bubbles formed by the gas generated at that time in mortar.
起泡剤を用いて、安定な微少泡を作り、モル
タル中に含有させる方法。 A method of creating stable microbubbles using a foaming agent and incorporating them into mortar.
等の方法がある。There are other methods.
しかして、上記の方法としては、一般的に
は、次の又はの方法が採用されている。 As the above method, the following methods are generally adopted.
セメント、骨材、水及び起泡剤を同時に混合
し、十分に混練した後、成形し、養生後脱型す
る。 Cement, aggregate, water and foaming agent are mixed at the same time, thoroughly kneaded, then molded, and removed from the mold after curing.
起泡剤及び水を予め起泡機で混合起泡させ、
これをセメント、骨剤及び水の混練物に添加混
合し、十分に混練した後、成形し、養生後脱型
する。 Mix and foam the foaming agent and water in advance using a foaming machine,
This is added to a kneaded mixture of cement, aggregate and water, thoroughly kneaded, molded, and removed from the mold after curing.
上記、の方法のうち、の方法では混合条
件等により得られるセメント硬化体の比重等の物
性にバラツキが生じ易いが、の方法であれば、
比較的安定した物性のものを得ることができる。 Among the above methods, method (2) tends to cause variations in the physical properties such as specific gravity of the hardened cement obtained depending on the mixing conditions, etc., but if method (2) is used,
It is possible to obtain products with relatively stable physical properties.
［発明が解決しようとする問題点］
軽量気泡セメント、特に比重が1.0以下の軽量
気泡セメントの製造においては、上記、のい
ずれを採用した場合においても、成形後の養生に
よる硬化、強度発現に要する時間が長く（例えば
20℃養生で３〜４日、50℃養生で２日）、脱型ま
でに長時間を要する。このため、成形型枠の回転
率が悪く、生産効率が低いことから製品のコスト
アツプをまねいていた。また、生産効率を向上さ
せるために、型枠を増やす場合には、型枠の費用
の他に、型枠の広い設置スペースが必要となり、
不利である。[Problems to be solved by the invention] In the production of lightweight cellular cement, especially lightweight cellular cement with a specific gravity of 1.0 or less, no matter which of the above methods is adopted, the hardening required by curing after molding and the development of strength are It takes a long time (e.g.
It takes a long time to remove the mold (3-4 days at 20℃, 2 days at 50℃). For this reason, the rotation rate of the molding frame was poor, resulting in low production efficiency and an increase in the cost of the product. In addition, when increasing the number of formworks to improve production efficiency, in addition to the cost of the formworks, a large installation space for the formworks is required.
It is disadvantageous.
しかも、このように硬化に長時間を要する場合
には、硬化過程でつぶれる気泡の割合が多くなる
ため、得られる硬化体の比重が大きくなり、目的
とする軽量のセメント硬化体を得ることができな
いという問題もある。 Moreover, if curing takes a long time like this, the proportion of bubbles that collapse during the curing process increases, and the specific gravity of the resulting hardened product increases, making it impossible to obtain the desired lightweight hardened cement product. There is also the problem.
一方、養生による硬化、強度発現に要する時間
を短縮する目的で、早強（超早強）セメント、ジ
エツトセメント、アルミナセメント等をセメント
原料として用いたり、各種急結剤を添加使用する
ことにより速硬性のモルタルを調製して成形する
方法、あるいは、養生温度を高くして硬化を速め
る方法が採用されている。 On the other hand, in order to shorten the time required for hardening and strength development through curing, early-strength (ultra-early-strength) cement, jet cement, alumina cement, etc. are used as cement raw materials, and various quick-setting agents are added. A method of preparing and molding a fast-hardening mortar, or a method of increasing the curing temperature to speed up hardening has been adopted.
しかしながら、速硬性のモルタルを使用する場
合には、モルタルの混練から凝結までの時間が短
くなるため、混練機内で凝結硬化が開始したり、
混練後成形工程に到るまでの間の随所で凝結が起
こり、混合が不十分となつたり、モルタルの輸送
性が悪化したり、成形性が極めて悪くなるなどの
問題が起こる。特に、前記の製造方法による場
合、原料の混練から成形工程に到るまでの時間を
長く要するため、このような問題が生起し易い。 However, when using fast-hardening mortar, the time from kneading the mortar to setting is shortened, so setting and hardening may start in the kneader, or
Condensation occurs at various points after kneading until the molding step, resulting in problems such as insufficient mixing, poor mortar transportability, and extremely poor moldability. In particular, when using the above manufacturing method, such problems are likely to occur because it takes a long time from kneading the raw materials to the molding process.
これに対し、養生温度を高くする方法では、外
部加熱により養生温度を上昇させても、モルタル
の断熱性のために外部の熱がモルタル内部までに
伝わり難く、全体を均質に養生、硬化させること
が困難であるという欠点がある。 On the other hand, with the method of increasing the curing temperature, even if the curing temperature is increased by external heating, the heat insulating properties of the mortar make it difficult for external heat to be transmitted to the inside of the mortar, making it possible to uniformly cure and harden the entire mortar. The disadvantage is that it is difficult to
［問題点を解決するための手段］
本発明は上記従来の問題点を解決し、短い硬化
時間で、良好な気泡を有する軽量気泡セメント硬
化体を安定生産することができる。軽量気泡セメ
ント硬化体の製造方法を提供するものであつて、
起泡剤及び水を混合して得られたエアーミルク
と、セメントモルタル又はセメントペーストとを
混合して成形し、次いで養生して軽量気泡セメン
ト硬化体を製造する方法において、被成形材料を
成形工程に送給する直前で、超急硬性混合剤を添
加混合することを特徴とする軽量気泡セメント硬
化体の製造方法、を要旨とするものである。[Means for Solving the Problems] The present invention solves the above-mentioned conventional problems and can stably produce a lightweight cured cellular cement having good bubbles in a short curing time. This provides a method for producing a lightweight hardened cellular cement, which involves mixing air milk obtained by mixing a foaming agent and water with cement mortar or cement paste, molding the mixture, and then curing it to make it lightweight. The gist of the present invention is a method for producing a lightweight cured cellular cement, characterized in that an ultra-rapid hardening mixture is added and mixed immediately before the material to be molded is fed to a molding process. It is something.
以下に本発明を図面を参照して詳細に説明す
る。 The present invention will be explained in detail below with reference to the drawings.
第１図は本発明の実施に好適な製造装置の一例
を示す系統図である。 FIG. 1 is a system diagram showing an example of a manufacturing apparatus suitable for implementing the present invention.
本発明においては、まず、起泡剤及び水よりエ
アーミルクを、また、セメント、水及び骨剤等を
混合してセメントモルタル又はセメントペースト
（以下、モルタル又はペーストと略すことがある）
を、各々、調製する。 In the present invention, first, air milk is made from a foaming agent and water, and cement, water, aggregate, etc. are mixed to form cement mortar or cement paste (hereinafter sometimes abbreviated as mortar or paste).
are prepared respectively.
即ち、第１図において、まず、混合槽１に起泡
剤及び水を投入して均一混合する。起泡剤として
は、動物蛋白質系、界面活性剤系又は特殊合成樹
脂系のものが用いられ、エアーミルクの調製にあ
たり、起泡剤及び水の混合割合は、水100重量部
に体して起泡剤１〜10重量部とするのが好まし
い。 That is, in FIG. 1, a foaming agent and water are first put into a mixing tank 1 and mixed uniformly. As the foaming agent, one based on animal protein, surfactant, or special synthetic resin is used. When preparing air milk, the mixing ratio of foaming agent and water is 100 parts by weight of water. Preferably, the amount of foaming agent is 1 to 10 parts by weight.
水及び起泡剤の混合物は、ポンプP1より、バ
ルブV1を開として、ガラスビーズなどの微細粒
２ａを内装する起泡機２に、バルブV2の開閉に
より３〜4.5Kg／cm2に調圧した空気と共に、送給
し起泡させて、エアーミルクを調製する。本発明
において、エアーミルクは比重ｐが0.02〜0.1と
りわけ0.05前後であることが好ましい。 A mixture of water and a foaming agent is pumped from a pump P1 by opening a valve V1 to a foaming machine 2 containing fine particles 2a such as glass beads at a rate of 3 to 4.5 kg/cm 2 by opening and closing a valve V2 . Air milk is prepared by feeding and foaming the milk together with air whose pressure is adjusted to . In the present invention, the air milk preferably has a specific gravity p of 0.02 to 0.1, especially around 0.05.
別に、混合槽３にて、セメント、水及び必要に
より骨材を混合して、セメントモルタル又はペー
ストを調製する。 Separately, in a mixing tank 3, cement, water and, if necessary, aggregate are mixed to prepare cement mortar or paste.
本発明においてセメント原料としては、凝結時
間の短いものを用いる必要はなく、一般の普通ポ
ルトランドセメントでも十分である。なお、本発
明において用いるセメント原料としては、珪酸カ
ルシウム−アウイン−スラグ系低アルカリ性セメ
ントも好適であり、このようなものとしては、例
えば、珪酸３石灰（3CaO・SiO2）、珪酸２石灰
（2CaO・SiO2）などのカルシウムシリケートを
主成分とするポルトランドセメントクリンカー20
〜70重量％、カルシウムサルホアルミネート
3CaO・3Al2O3・CaSO4を主成分とするクリンカ
ー10〜40重量％、無水石コウ又は二水石コウ10〜
40重量％、高炉水砕スラグ又はフライアツシユ20
〜60重量％の組成で、かつ（3Al2O3＋
1.5SiO2）／（CaO−SO3）がモル比で1.0〜1.5で
あるものがあげられる。 In the present invention, it is not necessary to use a cement raw material with a short setting time, and ordinary ordinary Portland cement is sufficient. Note that calcium silicate-auin-slag type low alkaline cement is also suitable as the cement raw material used in the present invention, such as tricalcium silicate (3CaO.SiO 2 ), dicalcium silicate (2CaO・Portland cement clinker 20 whose main component is calcium silicate such as SiO 2 )
~70% by weight, calcium sulfoaluminate
Clinker mainly composed of 3CaO・3Al2O3・CaSO4 10~40% by weight , anhydrite or dihydrite 10~
40% by weight, granulated blast furnace slag or fly ash 20
~60 wt% composition and (3Al 2 O 3 +
1.5SiO 2 )/(CaO-SO 3 ) in a molar ratio of 1.0 to 1.5.
骨材としても特別のものを用いる必要はなく、
通常使用される天然又は人工の軽量骨材が用いら
れる。 There is no need to use special aggregates,
Commonly used natural or artificial lightweight aggregates are used.
モルタル又はペースト調製に際し、セメント、
骨材及び水の混合割合は、セメント100重量部に
対して、骨材０〜200重量部、水30〜100重量部と
するのが好適である。 When preparing mortar or paste, cement,
The mixing ratio of aggregate and water is preferably 0 to 200 parts by weight of aggregate and 30 to 100 parts by weight of water to 100 parts by weight of cement.
得られたモルタル又はペーストは、ポンプP2
で圧送し、起泡機２より配管４を経て送給される
エアーミルクに混合する。この、モルタル又はペ
ーストとエアーミルクとの混合割合は、モルタル
又はペースト100重量部に対し、エアーミルク1.0
〜8.0重量部とするのが好適である。 The resulting mortar or paste is pumped P 2
The milk is mixed with the air milk fed from the foaming machine 2 through the piping 4. The mixing ratio of mortar or paste and air milk is 1.0 parts by weight of air milk to 100 parts by weight of mortar or paste.
The amount is preferably 8.0 parts by weight.
本発明においては、このモルタル又はペースト
とエアーミルクとの混合物に、該混合物を成形工
程に送給する直前で、超急硬性混和剤を添加混合
する。 In the present invention, an ultra-rapid hardening admixture is added to the mixture of mortar or paste and air milk immediately before the mixture is sent to the molding process.
即ち、第１図に示す如く、貯槽５よりポンプ
P3にて超急硬性混和剤を圧送し、スタテツクミ
キサー６により十分に混練し、直ちに混練物を成
形する。 That is, as shown in FIG.
The ultra-rapid hardening admixture is pumped at P 3 , sufficiently kneaded by the static mixer 6, and the kneaded product is immediately molded.
本発明において、超急硬性混和剤としては、硬
化促進硬化の高い急硬剤が用いられ、具体的に
は、「デンカQT」（電気化学工業社製）等のカル
シウムアルミネート溶融体と特殊変性石膏との混
合物又は「コニツクス131」（ハマノ工業(株)製）等
の無機炭素塩、アルミニウム化合物及びカルシウ
ム塩の混合物等が使用可能である。 In the present invention, as the ultra-rapid hardening admixture, a rapid hardening agent with high hardening acceleration and curing is used. Specifically, calcium aluminate melt and special modified A mixture with gypsum or a mixture of an inorganic carbon salt such as "Konix 131" (manufactured by Hamano Kogyo Co., Ltd.), an aluminum compound, and a calcium salt can be used.
前者の急硬剤を用いる場合、水／急硬剤＞0.6
（重量比）の割合で水溶液とし、必要に応じて硬
化時間調整用セツターを投入して、セメント原料
に対する急硬剤の重量比が８〜20％程度となるよ
うに圧送する。また、後者の急硬剤を用いる場合
には、コニツクス131の水溶液を調製し、セメン
ト原料に対するコニツクス131の重量比が１〜５
重量％程度となるように圧送する。 When using the former quick hardening agent, water/fast hardening agent>0.6
An aqueous solution is made into an aqueous solution at a ratio of (weight ratio), and a setter for adjusting hardening time is added as necessary, and the hardening agent is pumped so that the weight ratio of the quickening agent to the cement raw material is approximately 8 to 20%. In addition, when using the latter quick hardening agent, an aqueous solution of Conics 131 is prepared, and the weight ratio of Conics 131 to the cement raw material is 1 to 5.
It is pressure-fed so that it is about % by weight.
得られた混練物の成形は所望の型枠７に混練物
を打込み成形し、また、養生は、室温で２時間以
上行うのが好ましい。 The obtained kneaded product is molded by casting the kneaded product into a desired mold 7, and curing is preferably performed at room temperature for 2 hours or more.
養生により硬化したセメント成形体は、脱型し
た後更に養生する。この場合の養生は、室温で28
日以上行うのが好ましい。これにより良好な気泡
を有する軽量セメント製品が得られる。 The cement molded body hardened by curing is further cured after being demolded. Curing in this case is 28 hours at room temperature.
It is preferable to do this for at least one day. This results in a lightweight cement product with good air bubbles.
なお、養生時間は、養生を蒸気養生とすること
により短縮することが可能である。 Note that the curing time can be shortened by using steam curing.
なお、第１図に示す系統図は、本発明の実施の
一例であつて、本発明は何らこれに限定されるも
のではない。 Note that the system diagram shown in FIG. 1 is an example of the implementation of the present invention, and the present invention is not limited thereto.
例えば、第１図においては、エアーミルクとモ
ルタル又はペーストとを混合し、得られた混合物
を成形工程に送給する直前で該混合物に超急硬性
混和剤を添加混合する例を挙げたが、超急硬性混
和剤は被成形材料を成型する直前に添加すれば良
く、超急硬性混和剤とエアーミルクとを予め混合
し、これを成形工程に送給する直前のモルタル又
はペーストに添加混合するようにしても良い。 For example, in FIG. 1, an example is given in which air milk and mortar or paste are mixed, and a super-rapidly hardening admixture is added and mixed to the resulting mixture immediately before feeding the mixture to the molding process. The super-rapid-hardening admixture can be added just before molding the material to be molded; the super-rapid-hardening admixture and air milk are mixed in advance, and this is added to the mortar or paste just before being sent to the molding process. You can do it like this.
また、原料の混練等は第１図の如き、連続式装
置に限らずバツチ式の装置によつても良い。 Further, the kneading of the raw materials is not limited to the continuous type apparatus as shown in FIG. 1, but may also be performed using a batch type apparatus.
また、超急硬性混和剤の混合は、スタテツクミ
キサーの他、小型ローターステターミキサーを用
いることもできる。 In addition to the static mixer, a small rotor stator mixer can also be used to mix the super-rapidly hardening admixture.
更に、本発明は、モルタル又はペーストに補強
繊維を添加混合する繊維補強セメント硬化体の製
造にも適用できる。 Furthermore, the present invention can also be applied to the production of a fiber-reinforced cement hardened body by adding and mixing reinforcing fibers to mortar or paste.
［作用］
超急硬性混和剤を使用するため、成形後の硬化
を促進し、強度発現に要する時間を大幅に短縮す
ることができる。[Function] Since a super-rapid hardening admixture is used, curing after molding can be accelerated and the time required to develop strength can be significantly shortened.
しかも、超急硬性混和剤を成形直前のモルタル
又はペーストとエアーミルクとの混合物あるいは
モルタル又はペーストに添加するため、成形前凝
結により、混合不良、輸送不良、成形不良等の問
題が生じることがない。 Moreover, since the super-rapidly hardening admixture is added to the mortar or paste and air milk mixture or mortar or paste just before molding, problems such as poor mixing, poor transportation, and poor molding will not occur due to coagulation before molding. .
［実施例］
以下に実施例及び比較例を挙げて本発明をより
具体的に説明するが、本発明はその要旨を超えな
い限り、以下の実施例に限定されるものではな
い。[Examples] The present invention will be described in more detail with reference to Examples and Comparative Examples below, but the present invention is not limited to the following Examples unless it exceeds the gist thereof.
実施例 １
第１図に示す装置により軽量気泡セメント硬化
体の製造を行つた。Example 1 A lightweight hardened cellular cement was produced using the apparatus shown in FIG.
各配合原料及び配合比は下記の通りである。 Each blended raw material and blending ratio are as follows.
エアーミルク
起泡剤：アルケニールコハク酸系気泡剤５重量
部
水：95重量部
比 重：0.05
セメントペースト
セメント：普通ポルトランドセメント100重量
部
骨 材：フライアツシユ100重量部
水：50重量部
エアーミルク／セメントペースト
５／100（重量比）
超急硬性混和材液
急結剤：デンカQT 100重量部
水 80重量部
超急硬性混和剤／セメント原料：
15／100（重量比）
また、成形後の養生は、40℃、湿度100％で0.5
時間行つた後、脱型し、更に20℃、湿度80％で７
日間行つた。Air milk Foaming agent: 5 parts by weight of alkenyl succinic foaming agent Water: 95 parts by weight Specific gravity: 0.05 Cement paste Cement: 100 parts by weight of ordinary Portland cement Bone material: 100 parts by weight of fly ash Water: 50 parts by weight Air milk/ Cement paste 5/100 (weight ratio) Ultra-rapid hardening admixture liquid Rapid setting agent: Denka QT 100 parts by weight Water 80 parts by weight Ultra-rapid hardening admixture/cement raw material: 15/100 (weight ratio) Also, curing after molding is 0.5 at 40℃ and 100% humidity.
After that time, remove the mold and heat it at 20℃ and 80% humidity for 7 days.
I went there for days.
得られた軽量気泡セメント硬化体は比重0.65と
極めて軽量で、切断面の気泡を観察したところ、
極めて均一に気泡が形成されていることが認めら
れた。 The resulting lightweight cellular cement cured product was extremely lightweight with a specific gravity of 0.65, and when the air bubbles on the cut surface were observed,
It was observed that bubbles were formed extremely uniformly.
比較例 １
超急硬性混和剤を用いなかつたこと以外は実施
例１と同様の配合原料及び配合比で成形を行つ
た。Comparative Example 1 Molding was carried out using the same blended raw materials and blending ratio as in Example 1, except that no super-rapidly hardening admixture was used.
その結果、養生は40℃、湿度100％で48時間を
要し、脱型後更に20℃、湿度80％で28日を要し
た。 As a result, curing took 48 hours at 40℃ and 100% humidity, and after demolding, it took another 28 days at 20℃ and 80% humidity.
得られた気泡セメント硬化体は比重0.85と実施
例１で得られたものに比し、重く、切断面の気泡
を観察したところ、気泡がつぶれた箇所があり、
気泡は極めて不均一であることが認められた。 The resulting hardened cellular cement had a specific gravity of 0.85, which was heavier than that obtained in Example 1, and when the air bubbles on the cut surface were observed, there were some areas where the air bubbles had collapsed.
The bubbles were observed to be highly non-uniform.
比較例 ２
超急硬性混和剤をエアーミルク調製用の混合槽
１に投入したこと以外は実施例１と同様の配合原
料及び配合比で成形を行なつた。Comparative Example 2 Molding was carried out using the same blended raw materials and blending ratio as in Example 1, except that the ultra-rapid hardening admixture was added to the mixing tank 1 for air milk preparation.
その結果、セメントペーストの成形前凝結によ
り成形不良が生じ、良好な硬化体が得られなかつ
た。 As a result, poor molding occurred due to the cement paste setting before molding, and a good hardened product could not be obtained.
これらの結果から、本発明によれば、短時間で
良好な軽量気泡セメント硬化体が製造できること
が明らかである。 From these results, it is clear that according to the present invention, a good lightweight hardened cellular cement body can be produced in a short time.
［発明の効果］
以上詳述した通り、本発明の軽量気泡セメント
硬化体の製造方法は、超急硬性混和剤を成形直前
のモルタル又はペーストとエアーミルクとの混合
物あるいはセメントペーストに添加するための、
成形前凝結により、混合不良、輸送不良、成形不
良等の問題を生じることなく、硬化、強度発現時
間を大幅に短縮することが可能となる。[Effects of the Invention] As detailed above, the method for producing a lightweight cellular cement cured body of the present invention includes a method for adding an ultra-rapidly hardening admixture to mortar or a mixture of paste and air milk, or cement paste immediately before molding. ,
By coagulating before molding, it is possible to significantly shorten the time for curing and strength development without causing problems such as poor mixing, poor transportation, and poor molding.
このため、本発明によれば、高い生産効率で極
めて軽量かつ均一気泡のセメント硬化体を、安定
生産することが可能となる。 Therefore, according to the present invention, it is possible to stably produce an extremely lightweight and uniformly pore hardened cement body with high production efficiency.
第１図は本発明の実施に好適な製造装置の一例
を示す系統図である。
１，３……混合槽、２……起泡機、６……スタ
テツクミキサー、７……型枠。
FIG. 1 is a system diagram showing an example of a manufacturing apparatus suitable for implementing the present invention. 1, 3... Mixing tank, 2... Foaming machine, 6... Static mixer, 7... Formwork.
Claims (1)
クと、セメントモルタル又はセメントペーストと
を混合して成形し、次いで養生して軽量気泡セメ
ント硬化体を製造する方法において、被成形材料
を成形工程に送給する直前で、超急硬性混和剤を
添加混合することを特徴とする軽量気泡セメント
硬化体の製造方法。 ２ セメントは普通ポルトランドセメントである
特許請求の範囲第１項に記載の製造方法。 ３ セメントは、珪酸カルシウム−アウイン−ス
ラグ系低アルカリセメントである特許請求の範囲
第１項に記載の製造方法。 ４ エアーミルクは、水に対して起泡剤１〜10重
量％を混合してなるものである特許請求の範囲第
１項ないし第３項のいずれか１項に記載の製造方
法。 ５ セメントモルタルは、セメント100重量部に
対して骨材200重量部以下及び水30〜100重量部を
混合してなるものである特許請求の範囲第１項な
いし第４項のいずれか１項に記載の製造方法。 ６ セメントペーストは、セメント100重量部に
対し水30〜80重量部を混合してなるものである特
許請求の範囲第１項ないし第４項のいずれか１項
に記載の製造方法。 ７ エアーミルクとセメントモルタル又はセメン
トペーストとを混合し、得られた混合物を成形工
程に送給する直前で、該混合物に超急硬性混和剤
を添加混合する特許請求の範囲第１項ないし第６
項のいずれか１項に記載の製造方法。 ８ セメントモルタル又はセメントペーストを成
形工程に送給する直前で、セメントモルタル又は
セメントペーストにエアーミルクと超急硬性混和
剤とを混合したものを添加混合する特許請求の範
囲第１項ないし第６項のいずれか１項に記載の製
造方法。[Claims] 1. A method for producing a lightweight hardened cellular cement by mixing air milk obtained by mixing a foaming agent and water with cement mortar or cement paste, molding the mixture, and then curing the mixture. , A method for producing a lightweight hardened cellular cement, characterized in that an ultra-rapid hardening admixture is added and mixed immediately before the material to be molded is fed to the molding process. 2. The manufacturing method according to claim 1, wherein the cement is ordinary Portland cement. 3. The manufacturing method according to claim 1, wherein the cement is a calcium silicate-auin-slag-based low-alkali cement. 4. The manufacturing method according to any one of claims 1 to 3, wherein the air milk is made by mixing 1 to 10% by weight of a foaming agent with respect to water. 5. The cement mortar is made by mixing 100 parts by weight of cement with 200 parts by weight or less of aggregate and 30 to 100 parts by weight of water. Manufacturing method described. 6. The manufacturing method according to any one of claims 1 to 4, wherein the cement paste is made by mixing 30 to 80 parts by weight of water to 100 parts by weight of cement. 7. Claims 1 to 6, in which air milk and cement mortar or cement paste are mixed, and a super-rapidly hardening admixture is added to and mixed with the resulting mixture immediately before feeding the mixture to the molding process.
The manufacturing method according to any one of Items. 8 Claims 1 to 6, in which a mixture of air milk and a super-rapidly hardening admixture is added to and mixed with the cement mortar or cement paste immediately before feeding the cement mortar or cement paste to the molding process. The manufacturing method according to any one of the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28386285A JPS62143886A (en) | 1985-12-17 | 1985-12-17 | Manufacture of lightweight foamed cement set body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28386285A JPS62143886A (en) | 1985-12-17 | 1985-12-17 | Manufacture of lightweight foamed cement set body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62143886A JPS62143886A (en) | 1987-06-27 |
| JPH0568432B2 true JPH0568432B2 (en) | 1993-09-28 |
Family
ID=17671132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28386285A Granted JPS62143886A (en) | 1985-12-17 | 1985-12-17 | Manufacture of lightweight foamed cement set body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62143886A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005263579A (en) * | 2004-03-19 | 2005-09-29 | Misawa Homes Co Ltd | Concrete material, concrete member and method for manufacturing the same |
-
1985
- 1985-12-17 JP JP28386285A patent/JPS62143886A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005263579A (en) * | 2004-03-19 | 2005-09-29 | Misawa Homes Co Ltd | Concrete material, concrete member and method for manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62143886A (en) | 1987-06-27 |
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