JPH04132647A - Cement composition for extrusion molding - Google Patents
Cement composition for extrusion moldingInfo
- Publication number
- JPH04132647A JPH04132647A JP2254275A JP25427590A JPH04132647A JP H04132647 A JPH04132647 A JP H04132647A JP 2254275 A JP2254275 A JP 2254275A JP 25427590 A JP25427590 A JP 25427590A JP H04132647 A JPH04132647 A JP H04132647A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- cement
- composition
- extrusion
- 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.)
- Granted
Links
- 238000001125 extrusion Methods 0.000 title claims abstract description 37
- 239000000203 mixture Substances 0.000 title claims abstract description 32
- 239000004568 cement Substances 0.000 title claims abstract description 30
- 239000000843 powder Substances 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000012783 reinforcing fiber Substances 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims abstract description 7
- 235000007164 Oryza sativa Nutrition 0.000 claims description 16
- 239000010903 husk Substances 0.000 claims description 16
- 235000009566 rice Nutrition 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 9
- 240000007594 Oryza sativa Species 0.000 claims 1
- 238000002156 mixing Methods 0.000 abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 16
- 241000209094 Oryza Species 0.000 description 15
- 239000000835 fiber Substances 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000004576 sand Substances 0.000 description 6
- 230000000704 physical effect Effects 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 5
- 230000003746 surface roughness Effects 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- 206010016807 Fluid retention Diseases 0.000 description 3
- 239000010425 asbestos Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 229910052895 riebeckite Inorganic materials 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000609 methyl cellulose Polymers 0.000 description 2
- 239000001923 methylcellulose Substances 0.000 description 2
- 235000010981 methylcellulose Nutrition 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000000654 additive Substances 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
- 239000004566 building material Substances 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- -1 extrusion aid Substances 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000011412 natural cement Substances 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010455 vermiculite Substances 0.000 description 1
- 235000019354 vermiculite Nutrition 0.000 description 1
- 229910052902 vermiculite Inorganic materials 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、押出成形性がよく、かつ硬化後に表面平滑性
及び機械的強度の良好な繊維強化セメンＩ・成形体を与
える押出成形用セメン！・組成物に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides a cement for extrusion molding that has good extrusion moldability and provides a fiber-reinforced cement I/molded product with good surface smoothness and mechanical strength after curing! -Relates to compositions.
従来の技術
これまで、押出成形用の強化セメント組成物としては、
セメントにけい砂のような細骨材を配合した基本組成に
対し、石綿繊維、パルプ繊維、ガラス繊維、合成繊維、
炭素繊維、金属繊維などの補強用繊維と、メチルセルロ
ースのような成形助剤を添加し、さらに必要量の水を加
えた混練物か知られている。Conventional technology Up until now, reinforced cement compositions for extrusion molding have been
In addition to the basic composition of cement mixed with fine aggregate such as silica sand, asbestos fibers, pulp fibers, glass fibers, synthetic fibers,
A kneaded product is known in which reinforcing fibers such as carbon fibers and metal fibers and a forming aid such as methyl cellulose are added, and a necessary amount of water is added.
しかしながら、石綿繊維以外の補強用繊維を強化材とし
て含むセメント組成物は、押出成形の際の成形性が低い
上に、それを硬化して得られる成形体は表面が荒れ、外
観がそこなわれるのを免れない。例えば、経済性の点で
最も有利なパルプ繊維を添加した場合、その添加量が１
重量％以上になると、成形体表面の粗化を生じる。However, cement compositions containing reinforcing fibers other than asbestos fibers have poor formability during extrusion molding, and the molded products obtained by curing them have rough surfaces and deteriorated appearance. I can't escape it. For example, when adding pulp fiber, which is most advantageous in terms of economy, the amount added is 1
When the amount exceeds % by weight, the surface of the molded article becomes rough.
発明が解決しようとする課題
本発明は、補強用繊維を含有する押出成形用セメント組
成物について、その成形を容易にし、かつ表面平滑性の
優れた硬化成形体を与えるように改良することを目的と
してなされたものである。Problems to be Solved by the Invention The object of the present invention is to improve a cement composition for extrusion molding containing reinforcing fibers so as to facilitate its molding and provide a cured molded product with excellent surface smoothness. This was done as a.
課題を解決するための手段
本発明者らは、補強用繊維を含有する押出成形用セメン
ト組成物の物性を向上させるために、種々研究を重ねた
結果、意外にも特定の粉末度をもつもみ殻粉末を配合す
ると、セメント組成物の保水性が増大し、成形しやすく
なると共に軽量化が可能になる上、それを用いて製造さ
れる硬化成形体は、非常に優れた表面平滑性を示すこと
を見出し、この知見に基づいて本発明をなすに至った。Means for Solving the Problems The present inventors have conducted various studies in order to improve the physical properties of cement compositions for extrusion molding containing reinforcing fibers, and as a result, they have unexpectedly found a fir with a specific fineness. Adding shell powder increases the water retention of the cement composition, making it easier to mold and making it lighter in weight, and the cured molded products produced using it exhibit excellent surface smoothness. Based on this finding, the present invention has been completed.
すなわち、本発明は、セメント１００重量部、細骨材５
０〜１５０重量部、押出助剤０．５〜３．０重量部及び
補強用繊維５〜１５重量部から成る基材に対し、その合
計重量に基づき、粒径４０〜８５０μｍのもみ殻粉末１
〜１０重量％を配合し、かつ全組成物重量に対する含水
量を３０〜８０重量％に調整したことを特徴とする押出
成形用セメント組成物を提供するものである。That is, in the present invention, 100 parts by weight of cement, 5 parts by weight of fine aggregate,
Based on the total weight of a base material consisting of 0 to 150 parts by weight, 0.5 to 3.0 parts by weight of an extrusion aid, and 5 to 15 parts by weight of reinforcing fibers, 1 part of rice husk powder with a particle size of 40 to 850 μm is added.
The present invention provides a cement composition for extrusion molding, characterized in that the water content is adjusted to 30 to 80% by weight based on the total weight of the composition.
本発明組成物における基材を構成するセメントとしては
、通常使用されているポルトランドセメント、マグネシ
アセメント、アルミナセメント、混合セメント、天然セ
メントの中から任意に選んで用いることができる。The cement constituting the base material in the composition of the present invention can be arbitrarily selected from commonly used portland cement, magnesia cement, alumina cement, mixed cement, and natural cement.
また、細骨材として配合されるけい砂は、川砂山砂、砕
砂などが用いられる。このものは、セメント１００重量
部当り、５０〜１５０重量部、好ましくは７０〜１２０
重量部の割合で配合される。Furthermore, as the silica sand mixed as the fine aggregate, river sand, crushed sand, etc. are used. This product is 50 to 150 parts by weight, preferably 70 to 120 parts by weight, per 100 parts by weight of cement.
It is blended in the proportion of parts by weight.
次に、本発明組成物においては、押出成形を容易にする
ために押出助剤を添加する必要があるが、この押出助剤
としては、メチルセルロース、エチルセルロース、カル
ボキシメチルセルロース、ヒドロエチルセルロースなと
のセルロース誘導体カ好ましい。その他ポリビニルアル
コールなども用いることができる。これらの成形助剤は
、セメン１−１００重量部当り０．５〜３．０重量部の
割合で配合される。これよりも少ないと十分な成形性が
得られないし、またこれよりも量を増やしても、それ以
上の成形性の向上は望めない。Next, in the composition of the present invention, it is necessary to add an extrusion aid to facilitate extrusion molding, and this extrusion aid may include cellulose derivatives such as methylcellulose, ethylcellulose, carboxymethylcellulose, and hydroethylcellulose. It is preferable. Other materials such as polyvinyl alcohol can also be used. These molding aids are blended in a proportion of 0.5 to 3.0 parts by weight per 1-100 parts by weight of cement. If the amount is less than this, sufficient moldability cannot be obtained, and even if the amount is increased more than this, no further improvement in moldability can be expected.
また、補強用繊維としては、石綿繊維、パルプ繊維、ガ
ラス繊維、合成繊維、炭素繊維、金属繊維など、これま
でモルタル補強用として汎用されているものの中から任
意に選ぶことができるが、容易に入手でき、コストも安
いという点でパルプ繊維が最も好ましい。これらの繊維
は、径１０ｐｍ。In addition, the reinforcing fibers can be arbitrarily selected from among those commonly used for reinforcing mortar, such as asbestos fibers, pulp fibers, glass fibers, synthetic fibers, carbon fibers, and metal fibers. Pulp fibers are most preferred because of their availability and low cost. These fibers have a diameter of 10 pm.
長さ３ｍｍ〜士数ｍｍの範囲のものが通常用いられる。Those having a length in the range of 3 mm to several mm are usually used.
このものは、セメント１００重量部当り５〜１５重量部
の割合で用いることが必要である。これよりも少ないと
補強効果が不十分になるし、またこれよりも多いと押出
成形性がそこなわれる上に、もみ殻粉末を加えても硬化
成形体の表面平滑性の改良がなされなくなる。It is necessary to use this product in a proportion of 5 to 15 parts by weight per 100 parts by weight of cement. If the amount is less than this, the reinforcing effect will be insufficient, and if it is more than this, the extrusion moldability will be impaired, and even if the rice husk powder is added, the surface smoothness of the cured molded product will not be improved.
次に、本発明組成物においては、前記の各成分に加えて
もみ殻粉末を含むことが必要である。このもみ殻粉末と
しては、例えば特許第１１３８７８３号に記載された方
法に従って、粉砕して得られる粒径４０〜１８５μｍの
範囲のものが用いられる。これよりも粒径の大きいもの
を用いると、押出成形性が低下し、機械的強度が小さく
、表面平滑性の劣る硬化成形体を生じるし、また、これ
よりも粒径の小さいものを用いると表面平滑性がよく機
械的強度の大きい硬化成形体を与えることはできるが、
保水性が低く、押出成形性の劣る組成物になる。Next, the composition of the present invention needs to contain rice husk powder in addition to the above-mentioned components. As this rice husk powder, one having a particle size in the range of 40 to 185 μm obtained by pulverization according to the method described in, for example, Japanese Patent No. 1138783 is used. If a particle size larger than this is used, extrusion moldability will be reduced, mechanical strength will be low, and a cured molded product with poor surface smoothness will be produced. Although it is possible to provide a cured molded product with good surface smoothness and high mechanical strength,
This results in a composition with low water retention and poor extrudability.
このもみ殻粉末は、基材の合計重量に基づき１〜１０重
量％の割合で用いることが必要である。It is necessary to use this rice husk powder in a proportion of 1 to 10% by weight based on the total weight of the base material.
これよりも少ない量では、セメント組成物の押出成形性
の向上やそれから得られる硬化成形体の表面平滑性の改
善効果が不十分になるし、また、これよりも多い量にな
るとセメント組成物の硬化遅延の原因になる。If the amount is less than this, the effect of improving the extrudability of the cement composition and the surface smoothness of the cured molded product obtained from it will be insufficient. This will cause curing delays.
本発明は、以上の成分を必須成分とするものであるが、
それに加えて、従来押出成形用セメント系に慣用されて
いる添加物、例えばパーライト、シラスバルーン、シリ
カフラワー、バーミキュライトなどを所望に応じ、所要
の物性及び押出成形性をそこなわない量で配合すること
もできる。The present invention has the above components as essential components, but
In addition, additives conventionally used in cement systems for extrusion molding, such as perlite, shirasu balloons, silica flour, vermiculite, etc., may be added as desired in amounts that do not impair the required physical properties and extrudability. You can also do it.
さらに、本発明においては全固形分重量に対する含有量
を３０〜８０重量％の範囲にすることが必要である。こ
の量が３０重量％未満では、押出成形の際にダイス内で
材料が閉塞し、円滑な押出がなされないし、また、この
量が８０重量％を超えると軟らかすぎて保形性を失い押
出不能となる。Furthermore, in the present invention, it is necessary to keep the content in the range of 30 to 80% by weight based on the total solid weight. If this amount is less than 30% by weight, the material will become clogged in the die during extrusion molding, and smooth extrusion will not be possible.If this amount exceeds 80% by weight, the material will be too soft and will lose its shape retention properties. It becomes impossible.
これまでの押出成形用セメント組成物においては、含水
量が５０重量％以上になると保形性を失い、成形するこ
とができなかったが、本発明においては、その保水性が
高くなるため、８０重量％までの含水量においても十分
な保形性を有する。Conventional cement compositions for extrusion molding lose their shape retention when the water content exceeds 50% by weight and cannot be molded. It has sufficient shape retention even at water contents up to % by weight.
本発明のセメント組成物を調製するには、セメント、け
い砂、押出助剤、補強用繊維及びもみ殻を所定の割合で
、例えばフェンシェルミキサーやオムニミキサーを用い
て混合し、ニーダ−などにより混練する。次に、この組
成物を用いて成形体を製造するには、スクリュー押出機
を用いて所要の形状に押出成形し、次いで、通常のセメ
ント成形体と同様にして、水中養生、気中養生又は高温
高圧養生して硬化させたのち乾燥する。この際の成形圧
力は、５〜４０ｈ９７ｃｍ２程度で成形できる。To prepare the cement composition of the present invention, cement, silica sand, extrusion aid, reinforcing fibers, and rice husks are mixed in a predetermined ratio using, for example, a Fenschel mixer or an omnimixer, and then mixed with a kneader or the like. Knead. Next, to produce a molded body using this composition, it is extruded into the desired shape using a screw extruder, and then cured in water, in air, or It is cured at high temperature and high pressure to harden and then dried. The molding pressure at this time can be about 5 to 40h97cm2.
このようにして、曲げ強度１８０〜２５０７２ｇ／ ｃ
ｍ ２で表面平滑性の良好な成形体が得られる。In this way, the bending strength is 180~25072g/c
m2, a molded product with good surface smoothness can be obtained.
実施例
次に、実施例により本発明をさらに詳細に説明する。な
お、各例中の物性値は以下の方法により測定したもので
ある。EXAMPLES Next, the present invention will be explained in more detail with reference to examples. In addition, the physical property values in each example were measured by the following method.
Ｉ）曲げ強度；
所定の組成物を押出成形により成形した成形体を湿潤状
態で１日静置後２０°Ｃの水中で２７日間養生して硬化
させ、この硬化体について、（株）島津製作所製オート
グラフｌ５−ＬＯＴを使用し、スパン１５０ｍｍ、載荷
速度毎分１ｍ＋＋１の中央集中載荷により測定した。I) Bending strength: A molded product formed by extrusion molding a predetermined composition is left to stand still in a wet state for one day, and then cured in water at 20°C for 27 days, and this cured product is manufactured by Shimadzu Corporation. The measurement was performed using an Autograph 15-LOT manufactured by Manufacturer Co., Ltd., with a span of 150 mm and a centrally concentrated loading at a loading rate of 1 m++1 per minute.
■）押出成形性；
所定の組成物を、本田鉄工（株）製ＤＥ−５０型押出成
形機を用いて、押出圧力２６ｈｇｆ ／ ｃｍ ２で断
面１２ Ｘ ６０ｍｍの板状体に押出成形する際の押出
速度（ｃｍ７分）により比較した。この押出速度が大き
いほど良好な成形性を示す。■) Extrusion moldability; extrusion moldability when a given composition is extruded into a plate-shaped body with a cross section of 12 x 60 mm at an extrusion pressure of 26hgf/cm2 using a DE-50 extrusion molding machine manufactured by Honda Iron Works Co., Ltd. Comparison was made based on extrusion speed (cm 7 minutes). The higher the extrusion speed, the better the moldability.
■）表面平滑性：
所定の組成物を、本田鉄工（株）製ＤＥ−５０型押出成
形機を用いて押出成形して、断面１２Ｘ６０ｍｍの平板
を製造し、得られた成形体を硬化し、その表面粗さＣｍ
ｍ）を粗さ試験器を用いて測定し、その結果を以下のよ
うにして評価した。■) Surface smoothness: A predetermined composition was extruded using a DE-50 extrusion molding machine manufactured by Honda Iron Works Co., Ltd. to produce a flat plate with a cross section of 12 x 60 mm, and the obtained molded product was cured, Its surface roughness Cm
m) was measured using a roughness tester, and the results were evaluated as follows.
×・・・表面粗さ０．４ｍｍを超えるもの△・・・表面
粗さ０．２〜０．４ｍｍのもの○・・・表面粗さ０．２
ｍｍ未満のもの実施例１〜５
ポルトランドセメント〔三菱鉱業セメント（株）製〕■
００重量部、けい砂（熊本産６号） １００重量部、押
出助剤〔信越化学（社）製、商品名「メトロース」９０
３Ｈ−１５０００） ２重量部及びバルブ（長さ３ ｍ
ｍ） ５重量部の混合物に、もみ殻粉末「スミセルコ・
Ｂタイプ」（住金物産製、商品名、１５０〜３００μｍ
）を１〜５重量％の割合で加えたのち、水を加えて含水
率４０重量％に調整し、強化セメント組成物を得た。次
に、このものを本田鉄工（株）製ＤＥ−５０型押出成形
機を用いて押出圧力２６ｋｇｆ／ｃｍ２で押出成形し、
断面１２Ｘ６０ｍｍの板状体を製造した。この物性を第
１表に示す。×... Surface roughness exceeding 0.4 mm △... Surface roughness 0.2 to 0.4 mm ○... Surface roughness 0.2
Less than mm Examples 1 to 5 Portland cement [manufactured by Mitsubishi Mining Cement Co., Ltd.]■
00 parts by weight, silica sand (No. 6 from Kumamoto) 100 parts by weight, extrusion aid [manufactured by Shin-Etsu Chemical Co., Ltd., trade name "Metrose" 90]
3H-15000) 2 parts by weight and valve (length 3 m
m) Add 5 parts by weight of rice husk powder to the mixture.
"B type" (manufactured by Sumikin Bussan, product name, 150-300 μm
) was added at a ratio of 1 to 5% by weight, and then water was added to adjust the water content to 40% by weight to obtain a reinforced cement composition. Next, this material was extruded using a DE-50 type extrusion molding machine manufactured by Honda Iron Works Co., Ltd. at an extrusion pressure of 26 kgf/cm2,
A plate-shaped body with a cross section of 12 x 60 mm was manufactured. The physical properties are shown in Table 1.
実施例６〜ＩＯ
もみ殻粉末として「スミセルコ・Ａタイプ」（住金物産
製、商品名、１５０μｍ超）を用い、実施例１〜５と同
様にして板状体を製造した。この物性を第１表に示す。Examples 6 to IO A plate-shaped body was produced in the same manner as in Examples 1 to 5 using "Sumiselco A type" (manufactured by Sumikin Bussan, trade name, over 150 μm) as the rice husk powder. The physical properties are shown in Table 1.
実施例１１
実施例１におけるバルブの量を１０重量部に変えた混合
物にもみ殻粉末「スミセルコ・Ｂタイプ」４重量％を添
加し、実施例１と同様にして板状体を製造した。このよ
うにして得た板状体の表面粗さを測定したところ、（１
３５ｍｍであった。Example 11 A plate-like body was produced in the same manner as in Example 1 by adding 4% by weight of rice husk powder "Sumiselco B type" to a mixture in which the amount of bulbs in Example 1 was changed to 10 parts by weight. When the surface roughness of the plate-shaped body obtained in this way was measured, it was found that (1
It was 35 mm.
これに対し、もみ殻粉末を添加しないものは０．６５ｍ
ｍであった。In contrast, the one without rice husk powder added is 0.65 m
It was m.
このように、パルプの配合量が多い場合でも、所定粒度
のもみ殻粉末を添加すると表面平滑性を著しく改善する
ことができる。As described above, even when the amount of pulp blended is large, the surface smoothness can be significantly improved by adding rice husk powder of a predetermined particle size.
実施例１２
実施例１におけるもみ殻粉末「スミセルコ・Ｂタイプ」
の代わりにもみ殻粉末「スミセルコ・Ｃタイプ」（住金
物産製、商品名、３００〜８００μｍ） ５重量％を添
加した混合物を用いて、実施例１と同様にして板状体を
製造した。Example 12 Rice husk powder in Example 1 “Sumiselco B type”
A plate-shaped body was produced in the same manner as in Example 1, using a mixture in which 5% by weight of rice husk powder "Sumiselco C Type" (manufactured by Sumikin Bussan Co., Ltd., trade name, 300-800 μm) was added instead.
このものの成形速度を測定したところ３５ｃｍ１分であ
り、「スミセルコ・Ｂタイプ」を用いた場合の３８．８
ｃｍ／分に比べ低かった。When the molding speed of this product was measured, it was 35 cm 1 minute, which was 38.8 when using "Sumiselco B type".
cm/min.
このように、粒度の大きいもみ殻粉末を用いると押出成
形性が若干低下する。As described above, when rice husk powder with a large particle size is used, extrusion moldability is slightly reduced.
発明の効果
本発明組成物は、保水性が大きく含水量の高いセメント
組成物であるため、押出成形性がよく、軽量化が容易で
ある上に、補強用繊維の含有量を多ぐしても、表面平滑
性の良好な硬化成形体を与えることができるので、機械
的強度、外観の良好な材料が得られるという利点がある
。Effects of the Invention The composition of the present invention is a cement composition with high water retention and high water content, so it has good extrusion moldability, is easy to reduce in weight, and even if the reinforcing fiber content is increased. Since it is possible to provide a cured molded product with good surface smoothness, there is an advantage that a material with good mechanical strength and appearance can be obtained.
しかも、もみ殻粉末の添加量を３重量％以上にすると、
コンクリート特有の冷たさを緩和した木質調の硬化物を
与えるので、意匠性のある建材の製造用として好適であ
る。Moreover, when the amount of rice husk powder added is 3% by weight or more,
It is suitable for producing decorative building materials because it provides a wood-like cured product that has alleviated the coldness characteristic of concrete.
特許出願人 工業技術院長 杉 浦 賢（ほか１名） 復代理人阿 形 明Patent applicant: Director of the Agency of Industrial Science and Technology Ken Sugiura (and one other person) Sub-agent A shape Akira
Claims (1)
、押出助剤０．５〜３．０重量部及び補強用繊維５〜１
５重量部から成る基材に対し、その合計重量に基づき粒
径４０〜８５０μｍのもみ殻粉末１〜１０重量％を配合
し、かつ全組成物重量に対する含水量を３０〜８０重量
％に調整したことを特徴とする押出成形用セメント組成
物。1 100 parts by weight of cement, 50 to 150 parts by weight of fine aggregate, 0.5 to 3.0 parts by weight of extrusion aid, and 5 to 1 part by weight of reinforcing fiber.
Based on the total weight of the base material consisting of 5 parts by weight, 1 to 10% by weight of rice husk powder with a particle size of 40 to 850 μm was blended, and the water content was adjusted to 30 to 80% by weight based on the total weight of the composition. A cement composition for extrusion molding, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2254275A JPH04132647A (en) | 1990-09-26 | 1990-09-26 | Cement composition for extrusion molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2254275A JPH04132647A (en) | 1990-09-26 | 1990-09-26 | Cement composition for extrusion molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04132647A true JPH04132647A (en) | 1992-05-06 |
| JPH0557224B2 JPH0557224B2 (en) | 1993-08-23 |
Family
ID=17262709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2254275A Granted JPH04132647A (en) | 1990-09-26 | 1990-09-26 | Cement composition for extrusion molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04132647A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002006182A1 (en) * | 2000-07-14 | 2002-01-24 | Davco Construction Materials Pty Limited | Mortar composition and method |
-
1990
- 1990-09-26 JP JP2254275A patent/JPH04132647A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002006182A1 (en) * | 2000-07-14 | 2002-01-24 | Davco Construction Materials Pty Limited | Mortar composition and method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0557224B2 (en) | 1993-08-23 |
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