JPH06219795A - Hydraulic inorganic composition - Google Patents
Hydraulic inorganic compositionInfo
- Publication number
- JPH06219795A JPH06219795A JP1170993A JP1170993A JPH06219795A JP H06219795 A JPH06219795 A JP H06219795A JP 1170993 A JP1170993 A JP 1170993A JP 1170993 A JP1170993 A JP 1170993A JP H06219795 A JPH06219795 A JP H06219795A
- Authority
- JP
- Japan
- Prior art keywords
- water
- hydraulic inorganic
- substance
- powder
- high molecular
- 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
- C04B28/04—Portland cements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、水硬性無機質組成物に
関する。FIELD OF THE INVENTION The present invention relates to a hydraulic inorganic composition.
【０００２】[0002]
【従来の技術】セメント、モルタル、石膏等の水硬性無
機物質と水を用いた成形体は、古くから種々の構造材に
好適に使用されている。これらの水硬性無機質成形体を
製造するには、押出成形法が生産性の面で優れている。
しかし、押出成形法においては特に流動性が要求される
ので流動性を確保するために、セメントに大量の水が添
加されてきた。このような水硬性無機質成形体を硬化し
て得られた硬化体は、余剰水により空隙が形成され、強
度、耐水性等が低いという問題があった。2. Description of the Related Art Molded articles using water and a hydraulic inorganic substance such as cement, mortar, and gypsum have been suitably used for various structural materials since ancient times. The extrusion molding method is excellent in terms of productivity for producing these hydraulic inorganic moldings.
However, since fluidity is particularly required in the extrusion molding method, a large amount of water has been added to cement in order to ensure fluidity. A cured product obtained by curing such a hydraulic inorganic molded product has a problem that voids are formed by excess water and strength and water resistance are low.
【０００３】そこで高強度の水硬性化無機質硬化体を得
るために、セメントと細骨材とを主材とし、大量の水溶
性高分子物質を配合して少ない水比でセメントを分散さ
せ、成形体を得る方法（特公平３−２１３２４号公報）
が提案されている。In order to obtain a high-strength hydraulically hardened inorganic hardened material, cement and fine aggregate are used as main materials, and a large amount of a water-soluble polymer substance is mixed to disperse the cement in a small water ratio to form it. How to get a body (Japanese Patent Publication No. 3-21324)
Is proposed.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記の
方法においては、最終的に得られた硬化体中の水溶性高
分子物質が水により流出し、強度が低下するなどの問題
があった。However, in the above method, there is a problem that the water-soluble polymer substance in the finally obtained cured product flows out due to water and the strength is lowered.
【０００５】本発明の目的は、上記の課題を解決し、少
量の水でしかも少量の水溶性高分子物質の添加で成形で
き、高強度な硬化体を得ることのできる、水硬性無機質
組成物を提供することにある。The object of the present invention is to solve the above-mentioned problems and to provide a hydraulic inorganic composition which can be molded with a small amount of water and a small amount of a water-soluble polymer substance to obtain a cured product having high strength. To provide.
【０００６】[0006]
【０００７】本発明において用いられる水硬性無機質粉
末は、水硬性無機物質の粉末の実質的に全表面に水溶性
高分子物質が固着されているものである。本発明におい
て用いられる水硬性無機物質は、水で練ったとき硬化性
を示す無機物質ならば特に限定されず、たとえば普通ポ
ルトランドセメント、特殊ポルトランドセメント、アル
ミナセメント、ローマンセメント等の単味セメント、耐
酸セメント、耐火セメント、水ガラスセメント等の特殊
セメント、石膏、石灰、マグネシアセメント等の気硬性
セメントなどがあげられ、特に強度、耐水性の点で、ポ
ルトランドセメント、アルミナセメントが好適に使用さ
れる。これらは単独で使用されてもよいし、２種類以上
併用されてもよい。The hydraulic inorganic powder used in the present invention is a powder of hydraulic inorganic substance having a water-soluble polymer substance fixed on substantially the entire surface thereof. The hydraulic inorganic substance used in the present invention is not particularly limited as long as it is an inorganic substance that shows a hardening property when kneaded with water, and for example, ordinary Portland cement, special Portland cement, alumina cement, plain cement such as Roman cement, acid resistance. Specific cements such as cement, refractory cement, water glass cement, and air-hardening cements such as gypsum, lime, and magnesia cement are mentioned, and Portland cement and alumina cement are preferably used in terms of strength and water resistance. These may be used alone or in combination of two or more.
【０００８】水硬性無機物質の粉末の平均粒径は、小さ
くなると実質的に全表面を覆うためには大量の水溶性高
分子物質が必要となるので、３０〜１００μｍが好まし
い。The average particle size of the powder of the hydraulic inorganic substance is preferably 30 to 100 μm, since a large amount of the water-soluble polymer substance is required to cover substantially the entire surface when the powder becomes small.
【０００９】本発明において用いられる水溶性高分子物
質は、水に溶解して粘性を付与し、水硬性無機物質と水
から得られる組成物の流動性を高めて賦形性を良好なも
のとし、又、セメント硬化体中の過剰な水分を吸収しセ
メント粒子間中の空隙を埋める接合剤となりうる高分子
物質ならば特に限定されず、たとえばメチルセルロー
ス、ヒドロキシメチルセルロース、ヒドロキシエチルセ
ルロース、カルボキシメチルセルロース、ヒドロキシプ
ロピルメチルセルロース等のセルロースエーテル、ポリ
ビニルアルコール、ポリアクリル酸、リグニンスルホン
酸塩などがあげられる。The water-soluble polymer substance used in the present invention dissolves in water to give viscosity, and enhances the fluidity of the composition obtained from the hydraulic inorganic substance and water to improve the shapeability. Also, it is not particularly limited as long as it is a polymer substance that can absorb excess water in the hardened cement and serve as a binder to fill voids between cement particles, and examples thereof include methyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, carboxymethyl cellulose, hydroxypropyl. Examples thereof include cellulose ethers such as methyl cellulose, polyvinyl alcohol, polyacrylic acid, and lignin sulfonate.
【００１０】水溶性高分子物質の粉末の平均粒径は小さ
くなると水硬性無機物質の表面に固着された水溶性高分
子物質の粉末の厚みが薄くなるので、得られる組成物の
流動性が低下し、大きくなると水硬性無機物質の実質的
に全表面に固着するためには、大量の水溶性高分子物質
の粉末が必要となり、最終的に得られる硬化体の耐水性
が低下するので、水硬性無機物質の粉末より小さいこと
が好ましく、さらに好ましくは０．０１〜３０μｍであ
る。When the average particle size of the powder of the water-soluble polymer substance becomes small, the thickness of the powder of the water-soluble polymer substance fixed on the surface of the hydraulic inorganic substance becomes thin, so that the fluidity of the obtained composition is lowered. However, when it becomes large, a large amount of powder of a water-soluble polymer substance is required to adhere to substantially the entire surface of the hydraulic inorganic substance, and the water resistance of the finally obtained cured body decreases, so It is preferably smaller than the powder of the hard inorganic substance, and more preferably 0.01 to 30 μm.
【００１１】水溶性高分子物質の添加量は、少なくなる
と得られる組成物の流動性が低下し、多くなると、最終
的に得られる硬化体の耐水性が低下するので水硬性無機
物質１００重量部に対し、０．３〜１重量部が好まし
い。When the amount of the water-soluble polymer substance added decreases, the fluidity of the resulting composition decreases, and when it increases, the water resistance of the finally obtained cured product decreases, so 100 parts by weight of the hydraulic inorganic substance is added. On the other hand, 0.3 to 1 part by weight is preferable.
【００１２】水硬性無機物質に水溶性高分子物質を固着
する方法は、水硬性無機物質と水溶性高分子物質を混合
し、メカノケミストリーを起こさせるのが好ましい。As a method for fixing the water-soluble polymer substance to the hydraulic inorganic substance, it is preferable to mix the hydraulic inorganic substance and the water-soluble polymer substance to cause mechanochemistry.
【００１３】メカノケミストリーとは、固体物質に磨
砕、摩擦、延伸、圧縮などの機械的エネルギーを加える
ことによってひきおこされる構造、相転移、反応性、吸
着性、触媒活性などの変化をいう。メカノケミストリー
を起こさせる方法としては、高速流動攪拌機により回転
数５００〜１００００ｒｐｍで５〜２０分間処理するこ
とが好ましい。高速流動攪拌機としては、ヘンシェルミ
キサー、細川ミクロン社製；メカノフュージョンシステ
ム、奈良機械製作所社製；ナラハイブリタイゼーション
システム、岡田製作所社製；メカノミルなどがある。Mechanochemistry refers to changes in structure, phase transition, reactivity, adsorptivity, catalytic activity and the like caused by applying mechanical energy such as grinding, rubbing, stretching and compression to a solid substance. As a method of causing mechanochemistry, it is preferable to perform the treatment at a rotation speed of 500 to 10000 rpm for 5 to 20 minutes with a high-speed fluidized agitator. Examples of the high-speed fluidized agitator include Henschel mixer, manufactured by Hosokawa Micron Co., Ltd .; Mechanofusion system, manufactured by Nara Machinery Co., Ltd .; Nara Hybridization System, manufactured by Okada Co., Ltd .; Mechanomill.
【００１４】本発明において用いられる水の量は、少な
くなると水硬性無機物質の硬化が十分になされず、又、
組成物の分散性が低下し、多くなると最終的に得られる
硬化体の強度が低下するので、水硬性無機物質１００重
量部に対して１５〜６５重量部が好ましい。When the amount of water used in the present invention is small, the hydraulic inorganic substance is not sufficiently cured, and
Since the dispersibility of the composition decreases and the strength of the finally obtained cured product decreases when the dispersibility increases, 15 to 65 parts by weight is preferable relative to 100 parts by weight of the hydraulic inorganic substance.
【００１５】本発明においてさらに必要に応じて無機質
充填材が添加されてもよい。無機質充填材は、水に溶解
せず、水硬性無機物質の硬化反応を阻害せず、本発明で
用いられるあらゆる構成材料の作用を著しく阻害しない
ものならば特に限定されず、たとえば珪砂、川砂等のセ
メントモルタル用骨材、フライアッシュ、シリカフラワ
ー、シリカフューム、ベントナイト、高炉スラグ等の混
合セメント用混合材、セピオライト、ウォラストナイ
ト、マイカ等の天然鉱物、炭酸カルシウム、珪藻土など
があげられる。さらに軽量化を図る目的でシリカバルー
ン、パーライト、フライアッシュバルーン、シラスバル
ーン、ガラスバルーン、発泡焼生粘土等の無機質天然発
泡体などを使用してもよい。これらは単独で使用されて
もよいし、２種類以上併用されてもよい。In the present invention, an inorganic filler may be added if necessary. The inorganic filler is not particularly limited as long as it does not dissolve in water, does not inhibit the hardening reaction of the hydraulic inorganic substance, and does not significantly inhibit the action of any constituent material used in the present invention, for example, silica sand, river sand, etc. Cement mortar aggregates, fly ash, silica flour, silica fume, bentonite, blast furnace slag and other mixed cement admixtures, sepiolite, wollastonite, natural minerals such as mica, calcium carbonate and diatomaceous earth. For the purpose of further reducing the weight, silica balloon, perlite, fly ash balloon, shirasu balloon, glass balloon, inorganic natural foam such as foamed clay may be used. These may be used alone or in combination of two or more.
【００１６】上記無機質充填材は、平均粒径が小さくな
ると製造が困難となり、大きくなると無機質充填材の粒
子が分散し難くなるので、０．０３〜５００μｍが好ま
しい。上記無機質充填材は、少なくなると補強繊維の分
散性が低下し、多くなると最終的に得られる硬化体の強
度が低下するので水硬性無機物質１００重量部に対し２
００重量部以下が好ましい。The above-mentioned inorganic filler is preferably manufactured in a range of 0.03 to 500 μm, because it becomes difficult to manufacture when the average particle size is small, and it becomes difficult to disperse the particles of the inorganic filler when the average particle size is large. When the amount of the above-mentioned inorganic filler decreases, the dispersibility of the reinforcing fiber decreases, and when the amount of the inorganic filler increases, the strength of the finally obtained cured product decreases.
It is preferably not more than 00 parts by weight.
【００１７】本発明においては、さらに必要に応じて補
強繊維が添加されてもよい。補強繊維は、成形体に付与
したい性能に応じ任意のものが使用でき、たとえば、ビ
ニロン、ポリアミド、ポリエステル、ポリプロピレン、
カーボン、アラミド等の合成繊維、ガラス繊維、チタン
酸カリウム、鋼等の無機繊維、パルプなどが使用でき
る。特に合成繊維を用いた場合には、可撓性の向上が著
しい。上記補強繊維の繊維径は、細くなると混合時に再
凝集し、交絡によりファイバーボールが形成されやすく
なり、最終的に得られる硬化体の強度はそれ以上改善さ
れず、太くなるか又は短くなると引張強度向上などの補
強効果が小さく、又、長くなると繊維の分散性及び配向
性が低下するので、繊維径０．１〜４０デニール、繊維
長１〜１５ｍｍが好ましい。上記補強繊維の量は少なく
なると補強効果が得られず、多くなると繊維の分散性が
低下するので、水硬性無機物質１００重量部に対し、２
０重量部以下が好ましい。In the present invention, reinforcing fibers may be further added if necessary. As the reinforcing fiber, any one can be used according to the performance to be imparted to the molded body, and examples thereof include vinylon, polyamide, polyester, polypropylene,
Synthetic fibers such as carbon and aramid, glass fibers, potassium titanate, inorganic fibers such as steel, and pulp can be used. Particularly when synthetic fibers are used, the flexibility is remarkably improved. The fiber diameter of the reinforcing fiber is reaggregated at the time of mixing when it becomes thin, fiber balls are easily formed by entanglement, the strength of the finally obtained cured product is not further improved, and when it becomes thick or short, the tensile strength is increased. Since the reinforcing effect such as improvement is small and the dispersibility and orientation of the fiber are reduced when it is long, the fiber diameter is preferably 0.1 to 40 denier and the fiber length is 1 to 15 mm. When the amount of the reinforcing fiber is small, the reinforcing effect cannot be obtained, and when the amount is large, the dispersibility of the fiber is deteriorated.
It is preferably 0 parts by weight or less.
【００１８】又、上記無機質充填材及び補強繊維に水溶
性高分子物質が固着されていてもよい。無機質充填材及
び補強繊維に水溶性高分子物質を固着する方法は、上記
したメカノケミストリーによるのが好ましい。A water-soluble polymer substance may be fixed to the inorganic filler and the reinforcing fiber. The method of fixing the water-soluble polymer substance to the inorganic filler and the reinforcing fiber is preferably the above-mentioned mechanochemistry.
【００１９】本発明の水硬性無機質組成物から成形体を
得る方法は特に限定されず、押出成形、押圧成形、注型
成形などが適用される。しかし、機械的強度の点で水溶
性高分子物質の粉末が固着されている水硬性無機質粉
末、水及び必要に応じて無機質充填材、補強繊維を土混
機等の混練機で混練した後、得られた混練物を押出機に
供給し、押出成形により連続成形体を成形するのが好ま
しい。連続成形体としては、板状成形体を成形し、得ら
れた板状成形体を所望のサイズに切断したのち、成形す
べき成形品の外面形状に対応する内面形状のキャビティ
を有する押圧成形金型内に供給し、押圧成形してもよい
し、連続成形体として成形すべき成形品の外面形状に対
応する断面形状を有する連続成形体を成形し、得られた
連続成形体を切断してもよい。The method for obtaining a molded product from the hydraulic inorganic composition of the present invention is not particularly limited, and extrusion molding, press molding, cast molding and the like are applied. However, in terms of mechanical strength, a powder of a water-soluble polymer substance is fixed to a hydraulic inorganic powder, water and optionally an inorganic filler, after kneading a reinforcing fiber with a kneader such as a soil kneader, It is preferable that the obtained kneaded product is fed to an extruder and extrusion molding is performed to form a continuous molded body. As a continuous molded body, a plate-shaped molded body is molded, the obtained plate-shaped molded body is cut into a desired size, and then a pressing metal having a cavity having an inner surface shape corresponding to the outer surface shape of a molded product to be molded. It may be fed into the mold and press-molded, or a continuous molded body having a cross-sectional shape corresponding to the outer surface shape of the molded product to be molded as a continuous molded body is molded, and the obtained continuous molded body is cut. Good.
【００２０】本発明の成形体から硬化体を得るには、時
間をかけて自然養生を行ってもかまわないが、硬化反応
の遅い例えばポルトランドセメントのような水硬性無機
物質を使用する場合には、成形体を加熱、加湿する、オ
ートクレーブ養生を施すなど、従来公知の方法により養
生を行うことにより、硬化反応を促進でき、機械的物性
を向上することができる。In order to obtain a cured product from the molded product of the present invention, natural curing may be carried out for a long time, but when a hydraulic inorganic substance such as Portland cement having a slow curing reaction is used. Curing reaction can be promoted and mechanical properties can be improved by carrying out curing by a conventionally known method such as heating and humidifying the molded body, and curing by autoclave.
【００２１】[0021]
【実施例】本発明を実施例をもってさらに詳しく説明す
る。 実施例１〜３EXAMPLES The present invention will be described in more detail by way of examples. Examples 1-3
【００２２】表１に示した所定量の、普通ポルトランド
セメント（小野田セメント社製、平均粒径５０μｍ）、
フライアッシュ（ＪＩＳ Ａ ６２０１相当品；平均粒
径１００μｍ、真比重２．３、嵩比重０．６；関電化工
社製）、ポリプロピレン繊維（太さ２デニール、長さ５
ｍｍ）をドライブレンドし、容量１０リットルのアイリ
ッヒミキサー（アイリッヒ社製）で３分間混合した。得
られた混合物に平均粒径１０μｍのヒドロキシプロピル
メチルセルロース（２０℃における２％水溶液の粘度が
３０，０００ｃｐｓのもの）及び平均粒径１０μｍのポ
リビニルアルコール（信越化学社製、商品名；ＰＡ−１
８Ｓ）を混合し、得られた混合物をメカノヒュージョン
システム（細川ミクロン社製）に供給し、回転数１５０
０ｒｐｍで２０分間処理し、メカノケミストリーを起こ
させ、水溶性高分子物質の粉末が固着されている水硬性
無機質粉末を得た。水硬性無機物質の粉末の実質的に全
表面に、水溶性高分子物質の粉末が固着されていること
を電子顕微鏡写真で確認した後、表２に示した所定量の
水を添加し、さらにアイリッヒミキサーで２分間混合
し、本発明の水硬性無機質組成物を得た。得られた水硬
性無機質組成物を土練機（宮崎鉄工社製、型式ＭＰ−１
００型）で混練した後、真空押出成形機（宮崎鉄工社
製、型式ＭＶ−ＦＭ−Ａ−１型）で、幅４００ｍｍ、厚
み５ｍｍの連続成形体を得た。得られた成形体を６０
℃、９０％ＲＨにおいて６時間養生硬化して硬化体を得
た。評価は以下のように行った。A predetermined amount of ordinary Portland cement shown in Table 1 (manufactured by Onoda Cement Co., average particle size 50 μm),
Fly ash (JIS A 6201 equivalent; average particle size 100 μm, true specific gravity 2.3, bulk specific gravity 0.6; manufactured by KANDENKA CORPORATION), polypropylene fiber (thickness 2 denier, length 5)
mm) was dry-blended and mixed for 3 minutes with an Erich mixer (manufactured by Erich) having a capacity of 10 liters. Hydroxypropylmethyl cellulose having an average particle size of 10 μm (having a viscosity of a 2% aqueous solution of 30,000 cps at 20 ° C.) and polyvinyl alcohol having an average particle size of 10 μm (trade name: PA-1 manufactured by Shin-Etsu Chemical Co., Ltd.) were added to the resulting mixture.
8S) was mixed, and the resulting mixture was supplied to a mechanofusion system (manufactured by Hosokawa Micron Co., Ltd.) at a rotation speed of 150.
The mixture was treated at 0 rpm for 20 minutes to cause mechanochemistry to obtain a hydraulic inorganic powder to which the powder of the water-soluble polymer substance was fixed. After confirming by an electron micrograph that the powder of the water-soluble polymeric substance is adhered to substantially the entire surface of the powder of the hydraulic inorganic substance, the predetermined amount of water shown in Table 2 was added, and The mixture was mixed for 2 minutes with an Erich mixer to obtain the hydraulic inorganic composition of the present invention. The obtained hydraulic inorganic composition was used as a clay kneader (manufactured by Miyazaki Iron Works, model MP-1.
00 type), and then a continuous molding with a width of 400 mm and a thickness of 5 mm was obtained with a vacuum extrusion molding machine (Miyazaki Tekko KK, model MV-FM-A-1 type). The obtained molded body is 60
Curing was performed at 90 ° C. and 90% RH for 6 hours to obtain a cured product. The evaluation was performed as follows.
【００２３】評価 成形性 安定して成形できたものには○、成形体は得られたが押
出機の圧力が上がり安定に成形できないものには△、金
型内に混練物が詰まり成形体が得られなかったものには
×を記した。 Evaluation Moldability ○: Stable molding was possible ○, molding was obtained but the extruder pressure increased and stable molding was △, kneaded product was clogged in the mold Those not obtained were marked with x.
【００２４】曲げ強度 得られた硬化体を切断して試験片を得、曲げ強度をＪＩ
Ｓ Ａ １４０８の方法に準じて測定し、素材の曲げ強
度とした。以上の結果を表２に示した。Bending Strength The obtained cured product was cut to obtain a test piece, and the bending strength was measured by JI.
The bending strength of the material was measured according to the method of SA 1408. The above results are shown in Table 2.
【００２５】[0025]
【表１】 [Table 1]
【００２６】[0026]
【表２】 [Table 2]
【００２７】比較例１〜３Comparative Examples 1 to 3
【００２８】表２に示した所定量の、普通ポルトランド
セメント、フライアッシュ、ポリプロピレン繊維、ヒド
ロキシプロピルメチルセルロースをドライブレンドし、
容量１０リットルのアイリッヒミキサー（アイリッヒ社
製）で３分間混合した。得られた混合物を電子顕微鏡写
真で観察した結果、水硬性無機質粉末の一部のみに、水
溶性高分子物質の粉末が付着していた。得られた混合物
に所定量の水を添加した後実施例１と同様に混合、混練
した後押出成形した。成形性の評価は実施例１と同様に
行った。成形体が得られたものについては実施例１と同
様に硬化し、曲げ強度を測定した。Dry blending the prescribed amounts shown in Table 2 of ordinary Portland cement, fly ash, polypropylene fiber, and hydroxypropylmethyl cellulose,
The mixture was mixed for 3 minutes with an Erich mixer (manufactured by Erich) having a capacity of 10 liters. As a result of observing the obtained mixture with an electron micrograph, the powder of the water-soluble polymer substance was found to adhere to only a part of the hydraulic inorganic powder. A predetermined amount of water was added to the obtained mixture, which was then mixed and kneaded in the same manner as in Example 1 and then extruded. Moldability was evaluated in the same manner as in Example 1. The molded body obtained was cured in the same manner as in Example 1 and the bending strength was measured.
【００２９】[0029]
【発明の効果】本発明の水硬性無機質組成物は、実質的
に全表面に、水溶性高分子物質の粉末が固着されている
水硬性無機質粉末と、水とからなるものであるから、少
量の水でしかも少量の水溶性高分子物質の添加で成形で
き、高強度な硬化体を得ることができる。したがって、
本発明の製造方法により、強度、耐水性等の物性に優れ
た硬化体を安価に得ることができる。The hydraulic inorganic composition of the present invention comprises water and a hydraulic inorganic powder in which a powder of a water-soluble polymer substance is adhered to substantially the entire surface, and therefore a small amount thereof is used. It is possible to obtain a cured product having a high strength by molding with water and adding a small amount of a water-soluble polymer substance. Therefore,
By the production method of the present invention, a cured product having excellent physical properties such as strength and water resistance can be obtained at low cost.
Claims (1)
粉末が固着されている水硬性無機質粉末と、水とからな
る水硬性無機質組成物。1. A hydraulic inorganic composition comprising water and a hydraulic inorganic powder in which a powder of a water-soluble polymer substance is adhered to substantially the entire surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1170993A JPH06219795A (en) | 1993-01-27 | 1993-01-27 | Hydraulic inorganic composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1170993A JPH06219795A (en) | 1993-01-27 | 1993-01-27 | Hydraulic inorganic composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06219795A true JPH06219795A (en) | 1994-08-09 |
Family
ID=11785579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1170993A Pending JPH06219795A (en) | 1993-01-27 | 1993-01-27 | Hydraulic inorganic composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06219795A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020117414A (en) * | 2019-01-22 | 2020-08-06 | 日産自動車株式会社 | Fuel reforming unit |
| JP2020523279A (en) * | 2017-06-16 | 2020-08-06 | ネーデルランドセ オルガニサティエ フォール トエゲパスト−ナトールヴェテンシャッペリク オンデルゾエク ティエヌオー | Drying premix of flexible concrete, and its preparation and use |
-
1993
- 1993-01-27 JP JP1170993A patent/JPH06219795A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020523279A (en) * | 2017-06-16 | 2020-08-06 | ネーデルランドセ オルガニサティエ フォール トエゲパスト−ナトールヴェテンシャッペリク オンデルゾエク ティエヌオー | Drying premix of flexible concrete, and its preparation and use |
| US11396479B2 (en) | 2017-06-16 | 2022-07-26 | Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno | Dry premixture for flexible concrete and method for its preparation and use thereof |
| JP2020117414A (en) * | 2019-01-22 | 2020-08-06 | 日産自動車株式会社 | Fuel reforming unit |
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