JPH01242454A - Method for extrusion-molding cement product - Google Patents
Method for extrusion-molding cement productInfo
- Publication number
- JPH01242454A JPH01242454A JP7018488A JP7018488A JPH01242454A JP H01242454 A JPH01242454 A JP H01242454A JP 7018488 A JP7018488 A JP 7018488A JP 7018488 A JP7018488 A JP 7018488A JP H01242454 A JPH01242454 A JP H01242454A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- cement
- extrusion
- curing
- extrusion molding
- 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
- 238000001125 extrusion Methods 0.000 title claims abstract description 28
- 239000004568 cement Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000002734 clay mineral Substances 0.000 claims abstract description 13
- 239000000835 fiber Substances 0.000 claims abstract description 12
- 239000013078 crystal Substances 0.000 claims abstract description 9
- 238000007580 dry-mixing Methods 0.000 claims abstract description 8
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 7
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 7
- 238000004898 kneading Methods 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 14
- 239000002994 raw material Substances 0.000 claims description 14
- 238000007796 conventional method Methods 0.000 claims description 8
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 6
- 239000000347 magnesium hydroxide Substances 0.000 claims description 6
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 6
- 239000004927 clay Substances 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 239000000395 magnesium oxide Substances 0.000 claims description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims 1
- 239000010425 asbestos Substances 0.000 abstract description 12
- 229910052895 riebeckite Inorganic materials 0.000 abstract description 12
- 239000000463 material Substances 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- 206010058109 Hangnail Diseases 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 229920000609 methyl cellulose Polymers 0.000 description 3
- 239000001923 methylcellulose Substances 0.000 description 3
- 235000010981 methylcellulose Nutrition 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000012783 reinforcing fiber Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000005909 Kieselgur Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910001919 chlorite Inorganic materials 0.000 description 1
- 229910052619 chlorite group Inorganic materials 0.000 description 1
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000004794 expanded polystyrene Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 229910052622 kaolinite Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229910052903 pyrophyllite Inorganic materials 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明はセメント製品の押出成形方法に関し、詳しく
は無石綿配合のセメント原料を用いて成形品を押出成形
する改良された製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an extrusion molding method for cement products, and more particularly to an improved manufacturing method for extrusion molding molded products using asbestos-free cement raw materials.
セメント製品の補強用繊維として石綿は製品強変向上の
みならず、上記セメント製品の製造工程における未硬化
時、例えば押出成形における押出直後の未硬化製品に対
しても曲げ強度、耐クラツク性を付与するため、セメン
ト製品の補強材として極めて有用であることは周知のと
おりであるが、石綿は粉塵公害の原因となり、また、一
方において資源の枯渇といったことによりその使用は次
第に制限されつつある。As a reinforcing fiber for cement products, asbestos not only improves the strength of the product, but also imparts bending strength and crack resistance to uncured products during the manufacturing process of the cement products mentioned above, such as immediately after extrusion in extrusion molding. As is well known, asbestos is extremely useful as a reinforcing material for cement products.However, asbestos causes dust pollution, and on the other hand, its use is gradually being restricted due to resource depletion.
従って、石綿に代わる補強繊維の開発が種々活発に試み
られているところであるが、現時点においては未だ充分
なものを得るには至っていない。Therefore, various efforts are being made to develop reinforcing fibers to replace asbestos, but at present, nothing satisfactory has yet been achieved.
例えば、石綿の代替９Ｊ質としてガラス繊維が従前より
提案され、かつ、かなり実用化されるに至っているが、
ガラス繊維は基本的に耐アルカリ性が低く、この改良の
ための複雑な処理技術を要し高価となるといった問題の
他に、一般にガラス繊維は表面が平滑であるため、未硬
化板材内において、いわゆる「すり抜け」が生じやす（
、従って押出成形のように材料の押出直後から成形品自
身に保型性が要求される場合にあっては、充分な保型の
ための補強効果が期待出来ないといった問題があった。For example, glass fiber has long been proposed as a 9J substitute for asbestos, and has been put into practical use to a large extent.
Glass fibers basically have low alkali resistance, and in addition to the problem that improving this requires complicated treatment techniques and is expensive, glass fibers generally have a smooth surface, so in uncured board materials, so-called “Slip-through” is likely to occur (
Therefore, in extrusion molding where the molded product itself is required to maintain its shape immediately after extrusion, there is a problem that a sufficient reinforcing effect for shape retention cannot be expected.
また、合成繊維は、成形品の未硬化時の保型性向上には
役立っても成形品の高温高圧養生時に溶融してしまうの
で、このような養生工程を要するものには使用出来ず、
汎用性に乏しいといった問題があった。In addition, although synthetic fibers are useful for improving the shape retention of molded products when they are not cured, they melt when molded products are cured at high temperatures and high pressures, so they cannot be used in products that require such a curing process.
There was a problem that it lacked versatility.
上記問題点に鑑み、本願出願人は無石綿配合とした組成
物でありながら、石綿添加とほぼ同等の押出性、保型性
並びに製品強度を発揮するセメント製品の製造方法とし
て従来のセメント配合原料の石綿に代え珪酸マグネシウ
ム系緑泥石を添加したセメント配合物を押出成形する方
法を先に提案した（特開昭６０−１３７８５９号）。In view of the above-mentioned problems, the applicant of this application proposed a method for producing cement products that exhibits almost the same extrudability, shape retention, and product strength as asbestos-free compositions, using conventional cement-mixed raw materials. We have previously proposed a method of extrusion molding a cement mixture in which magnesium silicate chlorite is added instead of asbestos (Japanese Patent Application Laid-open No. 137859/1983).
上記方法は一応の成果を見たものの石綿使用の方法に比
し、押出成形時の表面状態が十分平滑とならず、例えば
波うち現象やささくれなどが発生し易い傾向があり、こ
れらを防止するため、メチルセルロースなどの押出助剤
を増量添加しなければならないと言った問題が生じた。Although the above method has shown some success, compared to the method using asbestos, the surface condition during extrusion molding is not sufficiently smooth and tends to cause waving and hangnails, for example, and it is necessary to prevent these. Therefore, a problem arose in that an increased amount of an extrusion aid such as methyl cellulose had to be added.
この発明は上記問題点に鑑み、無石綿配合のセメント原
料をスムースに押出成形可能とし、かつ、出来上った成
形品の強度、たわみ性等を石綿に匹敵する材料とし得る
セメント製品の押出成形方法を提供することを目的とし
てなされたものである。In view of the above-mentioned problems, this invention has been developed to extrude a cement product that enables smooth extrusion of asbestos-free cement raw materials, and that enables the strength, flexibility, etc. of the finished molded product to be comparable to that of asbestos. This was done for the purpose of providing a method.
即ち、この発明の第１の発明はセメント２０〜５０重量
％、シリカ質骨材２０〜６０重量％パルプ繊維１〜１０
重量％、押出成形助剤０．２〜１．０重量％に結晶構造
の規則性の低いカオリン系粘土鉱物を５〜３０重量％添
加し、乾式混合した後、加水してさらに混練し、該原料
を押出成形し、得た成形体を常法により養生硬化するこ
とを特徴とするもの、第２の発明はセメント２０〜５０
重量％、シリカ質骨材２０〜６０重量％パルプ繊維１−
１０重量％、押出成形助剤０．２〜１．０重量％にろう
石！クレーを５〜３０重量％添加し、乾式混合した後、
加水してさらに混練し、該原料を押出成形し、得た成形
体を常法により養生硬化することを特徴とするもの、第
３の発明はセメント２０〜５０重量％、シリカ質骨材２
０〜６０重世％パルプ繊ａｔ〜１０重量％、押出成形助
剤０．２〜１．０重量％に結晶構造の規則性の低いカオ
リン系粘土鉱物と水酸化マグネシウムとの混合物を５〜
２０重量％添加し乾式混合した後、加水してさらに混練
し、該原料を押出成形し、得た成形体を常法により養生
硬化することを特徴とする、第４の発明はセメント２０
〜５０重量％、シリカ質骨材２０〜６０重量％バルブ繊
維ｌ〜ｌＯ重量％、押出成形助剤０．２〜１．０重量％
に水酸化マグネシウムと炭酸カルシウムとの混合物を５
〜３０重量％添加し、乾式混合した後、加水してさらに
混練し、該原料を押出成形し、得た成形体を常法により
養生硬化することを特徴とするものである。That is, the first invention of the present invention contains 20 to 50% by weight of cement, 20 to 60% by weight of siliceous aggregate, and 1 to 10% of pulp fibers.
5 to 30 weight percent of kaolin clay mineral with a low regularity of crystal structure is added to 0.2 to 1.0 weight percent of the extrusion aid, and after dry mixing, water is added and further kneaded. The second invention is characterized in that the raw material is extruded and the obtained molded product is cured and hardened by a conventional method.
wt%, siliceous aggregate 20-60 wt% pulp fiber 1-
10% by weight, extrusion aid 0.2-1.0% by weight and waxite! After adding 5 to 30% by weight of clay and dry mixing,
The third invention is characterized by adding water and further kneading, extruding the raw material, and curing and hardening the obtained molded body by a conventional method.
0 to 60% pulp fiber at to 10% by weight, 0.2 to 1.0% by weight of extrusion aid, and 5 to 5% of a mixture of kaolin clay mineral with a low regularity of crystal structure and magnesium hydroxide.
The fourth invention is characterized in that after adding 20% by weight and dry mixing, adding water and further kneading, extruding the raw material and curing and hardening the obtained molded product by a conventional method.
~50% by weight, 20-60% by weight of siliceous aggregate, 1-10% by weight of valve fibers, 0.2-1.0% by weight of extrusion aid.
Add a mixture of magnesium hydroxide and calcium carbonate to
It is characterized by adding ~30% by weight, dry mixing, adding water, further kneading, extruding the raw material, and curing and hardening the obtained molded product by a conventional method.
この発明の第１の発明において、使用される結晶構造の
規則性の低いカオリン系粘土鉱物とは、Ａ １＊Ｏｘ・
２ＳｉＯ□ ・２Ｈ２０で表わされ、いずれも成分は同
一であるが、結晶構造が異なり、具体的にはナタライト
、デイツカイト、カオリナイト及びハロイサイトなどが
あり、結晶構造の規則性の低いものは、後二者が相当す
る。In the first aspect of the present invention, the kaolin clay mineral with a low regularity of crystal structure used is A1*Ox.
It is expressed as 2SiO The two are equivalent.
ちなみに、前二者は単斜晶系に属し、いずれも記載の順
に結晶構造の不規則性が増す。Incidentally, the former two belong to the monoclinic system, and the irregularity of their crystal structures increases in the order of description.
また、これら粘土鉱物は、石綿と類似するＭｇＯ・Ｓｉ
Ｏ□ ・Ｈ，０系で表わされるベンニナイト系と成分的
には明らかに区別される。In addition, these clay minerals include MgO and Si, which are similar to asbestos.
In terms of composition, it is clearly distinguished from the benninite system represented by the O□ .H,0 system.
本発明において、結晶構造の規則性の低い上記粘土鉱物
を用いるのは、パルプ繊維とのからみ性を良くするため
である。In the present invention, the above-mentioned clay mineral having a low regularity of crystal structure is used in order to improve entanglement with pulp fibers.
また、第２の発明において用いられるろう石クレーとし
ては、パイロフィライト系、カオリナイト系、及びセリ
サイト系の三種が有るが、これらのうち前二者が好適に
使用される。Furthermore, there are three types of waxite clay used in the second invention: pyrophyllite type, kaolinite type, and sericite type, and among these, the first two are preferably used.
上記において使用される粘土鉱物はいずれも押出成形原
料にＡ１滑性を付与し、押出性を良くすることを目的と
して添加されるものであって、５重量％より少ないと上
記目的は達成されず、また３０重量％より多くすると、
セメントマトリックスの結合強度に対する悪影響が無視
出来なくなるため、５重量％〜３０重量％の配合とされ
る。All of the clay minerals used above are added for the purpose of imparting A1 lubricity to the extrusion molding raw material and improving extrudability, and if the amount is less than 5% by weight, the above purpose will not be achieved. , and when it is more than 30% by weight,
Since the negative effect on the bonding strength of the cement matrix cannot be ignored, the content is set at 5% to 30% by weight.
また、上記粘土鉱物は天然産出の資源であり、その組成
成分にある程度のばらつきが有るのはやむを得ない。Further, the above-mentioned clay mineral is a naturally produced resource, and it is unavoidable that there is some variation in its composition.
そこで、これらを均質化するため、上記粘土鉱物の使用
を凍らし、その分、水酸化マグネシウムを添加し、ある
いは、品質の一定性を目的として一定純度の水酸化マグ
ネシウムと炭酸カルシウムの混合物のみを用いても良い
。Therefore, in order to homogenize these, the above clay minerals are frozen and magnesium hydroxide is added accordingly, or a mixture of magnesium hydroxide and calcium carbonate of a certain purity is used for the purpose of consistent quality. May be used.
これらの配合量を５〜２０重量％、または５〜３０重量
％とするのも前述と同趣の理由による。It is for the same reason as mentioned above that the blending amount of these components is 5 to 20% by weight or 5 to 30% by weight.
上記以外の配合物としてセメントは、普通ポルトランド
セメント等が使用され、ソリ力質骨材としてはセメント
マトリックスの結合強度を高めることより珪石粉、微珪
石粉、活性白土、珪藻土、フライアッシュ、等が使用さ
れる。As a compound other than the above, Portland cement is usually used as the cement, and as a stiff aggregate, silica powder, fine silica powder, activated clay, diatomaceous earth, fly ash, etc. are used to increase the bonding strength of the cement matrix. used.
また、パルプには、針葉樹、広葉樹、古紙再生パルプ等
が使用される。Further, as the pulp, softwood, hardwood, recycled pulp from used paper, etc. are used.
また、押出助剤としてはメチルセルロースが好適に使用
される。Furthermore, methylcellulose is preferably used as an extrusion aid.
上記以外として、例えば成形体の軽量化を図るため、パ
ーライト、発泡ポリスチレンビーズなど軽量骨材を添加
することも出来る。In addition to the above, lightweight aggregates such as perlite and expanded polystyrene beads may be added, for example, in order to reduce the weight of the molded product.
上記配合物を乾式混合するのは、パルプのファイバーホ
ール化を防止し、全配合物の均一混合を達成するためで
、混合には強制攪拌混合の可能なミキサが使用される。The above-mentioned compositions are dry mixed in order to prevent the formation of fiber holes in the pulp and achieve uniform mixing of all the compositions, and a mixer capable of forced stirring is used for mixing.
そして、水と共に再度混合し、得たスラリーは配合され
た粘土鉱物、あるいは水酸化マグネシウム等の潤滑材に
よりきわめて押出抵抗の少ないスラリーとなり、成形グ
イより吐出後も波打ち、ささくれ等のない平滑面となる
のである。Then, the resulting slurry is mixed with water again and becomes a slurry with extremely low extrusion resistance due to the blended clay minerals or lubricants such as magnesium hydroxide, and even after being discharged from the molding gou, it has a smooth surface without undulations or hangnails. It will become.
（実施例１）
別紙表１に示す配合量にて、各原料を強制攪拌ミキサで
３分間乾式混合し、次いで、水を加えてノ昆練し、真空
押出機ニより厚さ１２ｍｍ、幅１００ｍｍ、長さ１００
０ｍｍ の板状体を押出成形した。(Example 1) Each raw material was dry-mixed for 3 minutes using a forced stirring mixer in the amounts shown in Attached Table 1, then water was added and kneaded, and the mixture was molded using a vacuum extruder to a thickness of 12 mm and a width of 100 mm. , length 100
A plate-shaped body of 0 mm was extruded.
板体は、２４時間の自然養生後、７ ｋｇ／ｃｏｔ ｘ
３時間のオートクレーブ養生を行ない、直ちにその物
性を測定した。After natural curing for 24 hours, the board weighs 7 kg/cot x
After autoclave curing for 3 hours, the physical properties were immediately measured.
その結果は別紙表１下憫に示す通りである。The results are shown in Appendix Table 1 below.
なお、表中、配合槽の数字は重量％を示し、メチルセル
ロース、ポリプロピレン繊維、及び水は外削での重量％
を示す。In addition, in the table, the numbers for the blending tank indicate weight %, and methyl cellulose, polypropylene fiber, and water are the weight % of external cutting.
shows.
また、物性欄において、曲げ強度の単位はｋｇ ／ ｃ
＋Ｊ、たわみの単位はｍｍ、成形性欄の○は表面平滑で
良好、Δは一部に波打ちや、ささくれが発生したものを
示す。In addition, in the physical properties column, the unit of bending strength is kg/c
+J, the unit of deflection is mm, ◯ in the formability column indicates that the surface is smooth and good, and ∆ indicates that some waving or hangnails have occurred.
（実施例２）
別紙表２に示す配合量にて、実施例１と同様にして板状
体を押出成形し、物性試験を行なった。(Example 2) A plate-like body was extruded in the same manner as in Example 1 using the blending amounts shown in Attached Table 2, and a physical property test was conducted.
その結果は同表下欄に示す通りである。The results are shown in the lower column of the same table.
（実施例３）
別紙表３に示す配合量にて、各原料を強制攪拌ミキサで
３分間乾式混合を行ない、次いで水を加えて混練し、真
空押出機により、実施例１と同様の板状体を押出成形し
た。(Example 3) Each raw material was dry mixed in a forced stirring mixer for 3 minutes at the blending amounts shown in Attached Table 3, then water was added and kneaded, and the same plate shape as in Example 1 was prepared using a vacuum extruder. The body was extruded.
次いで、これを実施例１と同様に養生硬化後、同様な試
験を行なった。Next, this was cured and cured in the same manner as in Example 1, and then the same test was conducted.
その結果は、別紙表３下欄に示す通りである。The results are shown in the lower column of Appendix Table 3.
（実施例４）
別紙表４に示す配合にて実施例１と同様に板状体を成形
し、養生硬化後、物性試験を行なった。(Example 4) A plate-like body was molded in the same manner as in Example 1 using the formulation shown in Attachment Table 4, and after curing and curing, physical property tests were conducted.
その結果は、同表下欄に示す通りである。The results are shown in the lower column of the same table.
この発明は以上説明したように、全く石綿を配合しない
にもかかわらず、きわめて押出性の良い特性が得られ、
また、強度的にも優れた板材を製造することが出来るの
である。As explained above, this invention provides extremely good extrudability even though it does not contain asbestos at all.
In addition, it is possible to manufacture plate materials with excellent strength.
Claims (1)
６０重量％パルプ繊維１〜１０重量％、押出成形助剤０
．２〜１．０重量％に結晶構造の規則性の低いカオリン
系粘土鉱物を５〜３０重量％添加し、乾式混合した後、
加水してさらに混練し、該原料を押出成形し、得た成形
体を常法により養生硬化することを特徴とするセメント
製品の押出成形方法。（２）セメント２０〜５０重量％
、シリカ質骨材２０〜６０重量％パルプ繊維１〜１０重
量％、押出成形助剤０．２〜１．０重量％にろう石質ク
レーを５〜３０重量％添加し、乾式混合した後、加水し
てさらに混練し、該原料を押出成形し、得た成形体を常
法により養生硬化することを特徴とするセメント製品の
押出成形方法。 （３）セメント２０〜５０重量％、シリカ質骨材２０〜
６０重量％パルプ繊維１〜１０重量％、押出成形助剤０
．２〜１．０重量％に結晶構造の規則性の低いカオリン
系粘土鉱物と酸化マグネシウムとの混合物を５〜２０重
量％添加し乾式混合した後、加水してさらに混練し、該
原料を押出成形し、得た成形体を常法により養生硬化す
ることを特徴とするセメント製品の押出成形方法。 （４）セメント２０〜５０重量％、シリカ質骨材２０〜
６０重量％パルプ繊維１〜１０重量％、押出成形助剤０
．２〜１．０重量％に水酸化マグネシウムと炭酸カルシ
ウムとの混合物を５〜３０重量％添加し、乾式混合した
後、加水してさらに混練し、該原料を押出成形し、得た
成形体を常法により養生硬化することを特徴とするセメ
ント製品の押出成形方法。[Claims] (1) 20 to 50% by weight of cement, 20 to 50% of siliceous aggregate
60% by weight pulp fiber 1-10% by weight, 0 extrusion aids
．． After adding 5 to 30 weight % of kaolin clay mineral with low regularity of crystal structure to 2 to 1.0 weight % and dry mixing,
A method for extrusion molding a cement product, which comprises adding water and further kneading, extruding the raw material, and curing and hardening the obtained molded product by a conventional method. (2) Cement 20-50% by weight
, 5-30% by weight of waxy clay was added to 20-60% by weight of siliceous aggregate, 1-10% by weight of pulp fiber, and 0.2-1.0% by weight of extrusion aid, and after dry mixing, A method for extrusion molding a cement product, which comprises adding water and further kneading, extruding the raw material, and curing and hardening the obtained molded product by a conventional method. (3) Cement 20-50% by weight, siliceous aggregate 20-20%
60% by weight pulp fiber 1-10% by weight, 0 extrusion aids
．． After adding 5 to 20 weight % of a mixture of kaolin clay mineral with a low regularity of crystal structure and magnesium oxide to 2 to 1.0 weight % and dry mixing, water is added and further kneaded, and the raw material is extruded. A method for extrusion molding a cement product, which comprises curing and hardening the obtained molded product using a conventional method. (4) Cement 20-50% by weight, siliceous aggregate 20-20%
60% by weight pulp fiber 1-10% by weight, 0 extrusion aids
．． Add 5-30% by weight of a mixture of magnesium hydroxide and calcium carbonate to 2-1.0% by weight, dry mix, add water, knead further, extrude the raw material, and mold the obtained molded product. An extrusion molding method for cement products characterized by curing and hardening using a conventional method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63070184A JP2619909B2 (en) | 1988-03-23 | 1988-03-23 | Extrusion molding method for cement products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63070184A JP2619909B2 (en) | 1988-03-23 | 1988-03-23 | Extrusion molding method for cement products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01242454A true JPH01242454A (en) | 1989-09-27 |
| JP2619909B2 JP2619909B2 (en) | 1997-06-11 |
Family
ID=13424184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63070184A Expired - Fee Related JP2619909B2 (en) | 1988-03-23 | 1988-03-23 | Extrusion molding method for cement products |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2619909B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04362055A (en) * | 1991-06-10 | 1992-12-15 | Kubota Corp | Method for extrusion-molding cement product |
| JP2006188398A (en) * | 2005-01-07 | 2006-07-20 | Mitsubishi Shoji Construction Materials Corp | Cementitious composition |
| JP2006213593A (en) * | 2005-01-04 | 2006-08-17 | Ube Ind Ltd | Cement composition and hardened body obtained by including the same |
| CN112516806A (en) * | 2020-10-12 | 2021-03-19 | 宁波方太厨具有限公司 | Preparation method of electrostatic spinning fiber membrane |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5244841A (en) * | 1975-08-04 | 1977-04-08 | Mitsubishi Petrochemical Co | Method of production of gypsum molded form |
| JPS5859803A (en) * | 1981-10-07 | 1983-04-09 | 宵田 清悟 | Manufacture of inorganic shape |
| JPS58132505A (en) * | 1982-02-01 | 1983-08-06 | 信越化学工業株式会社 | Manufacture of cement group shape |
| JPS60137859A (en) * | 1983-12-23 | 1985-07-22 | 株式会社クボタ | Manufacture of cement product |
-
1988
- 1988-03-23 JP JP63070184A patent/JP2619909B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5244841A (en) * | 1975-08-04 | 1977-04-08 | Mitsubishi Petrochemical Co | Method of production of gypsum molded form |
| JPS5859803A (en) * | 1981-10-07 | 1983-04-09 | 宵田 清悟 | Manufacture of inorganic shape |
| JPS58132505A (en) * | 1982-02-01 | 1983-08-06 | 信越化学工業株式会社 | Manufacture of cement group shape |
| JPS60137859A (en) * | 1983-12-23 | 1985-07-22 | 株式会社クボタ | Manufacture of cement product |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04362055A (en) * | 1991-06-10 | 1992-12-15 | Kubota Corp | Method for extrusion-molding cement product |
| JP2006213593A (en) * | 2005-01-04 | 2006-08-17 | Ube Ind Ltd | Cement composition and hardened body obtained by including the same |
| JP2006188398A (en) * | 2005-01-07 | 2006-07-20 | Mitsubishi Shoji Construction Materials Corp | Cementitious composition |
| CN112516806A (en) * | 2020-10-12 | 2021-03-19 | 宁波方太厨具有限公司 | Preparation method of electrostatic spinning fiber membrane |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2619909B2 (en) | 1997-06-11 |
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| LAPS | Cancellation because of no payment of annual fees |