JPH0525824B2 - - Google Patents
Info
- Publication number
- JPH0525824B2 JPH0525824B2 JP19146884A JP19146884A JPH0525824B2 JP H0525824 B2 JPH0525824 B2 JP H0525824B2 JP 19146884 A JP19146884 A JP 19146884A JP 19146884 A JP19146884 A JP 19146884A JP H0525824 B2 JPH0525824 B2 JP H0525824B2
- Authority
- JP
- Japan
- Prior art keywords
- cement
- total amount
- amount
- weight
- raw materials
- 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 - Fee Related
Links
- 239000004568 cement Substances 0.000 claims description 37
- 238000001125 extrusion Methods 0.000 claims description 21
- 239000000123 paper Substances 0.000 claims description 17
- 239000010802 sludge Substances 0.000 claims description 17
- 239000002994 raw material Substances 0.000 claims description 16
- 238000006703 hydration reaction Methods 0.000 claims description 12
- 239000002893 slag Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 235000012438 extruded product Nutrition 0.000 claims description 6
- 229920000609 methyl cellulose Polymers 0.000 claims description 6
- 239000001923 methylcellulose Substances 0.000 claims description 6
- 235000010981 methylcellulose Nutrition 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 229910052783 alkali metal Inorganic materials 0.000 claims description 4
- 150000001340 alkali metals Chemical class 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 3
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 2
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 claims description 2
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 2
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 150000003863 ammonium salts Chemical class 0.000 claims 1
- 230000005484 gravity Effects 0.000 description 9
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 235000011116 calcium hydroxide Nutrition 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 239000000378 calcium silicate Substances 0.000 description 3
- 229910052918 calcium silicate Inorganic materials 0.000 description 3
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 229910001653 ettringite Inorganic materials 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical class N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 2
- 235000011130 ammonium sulphate Nutrition 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 2
- 235000012255 calcium oxide Nutrition 0.000 description 2
- 239000000292 calcium oxide Substances 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
- 230000000694 effects Effects 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 description 1
- 239000005695 Ammonium acetate Substances 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 1
- 235000019257 ammonium acetate Nutrition 0.000 description 1
- 229940043376 ammonium acetate Drugs 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- VBIXEXWLHSRNKB-UHFFFAOYSA-N ammonium oxalate Chemical compound [NH4+].[NH4+].[O-]C(=O)C([O-])=O VBIXEXWLHSRNKB-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 235000011148 calcium chloride Nutrition 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-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
- 239000004917 carbon fiber Substances 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 150000003840 hydrochlorides Chemical class 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 235000011147 magnesium chloride Nutrition 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 235000012254 magnesium hydroxide Nutrition 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 150000003891 oxalate salts Chemical class 0.000 description 1
- 235000011118 potassium hydroxide Nutrition 0.000 description 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 1
- 229910052939 potassium sulfate Inorganic materials 0.000 description 1
- 235000011151 potassium sulphates Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910001388 sodium aluminate Inorganic materials 0.000 description 1
- 235000011127 sodium aluminium sulphate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
- 229910001845 yogo sapphire 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
-
- 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
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
【発明の詳細な説明】
技術の分野
本発明は、セメント、繊維質原料、メチルセル
ローズを基本成分とした押出し成形品及びその製
造方法に関し、殊にそれら基本成分にスラグ、製
紙スラツジ焼却灰、水和反応促進剤を添加した押
出し成形品およびその製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to extruded products containing cement, fibrous raw materials, and methyl cellulose as basic components, and a method for producing the same, and particularly relates to extruded products containing cement, fibrous raw materials, and methylcellulose as basic components, and particularly those containing slag, papermaking sludge incineration ash, and water as basic components. The present invention relates to an extrusion molded product containing a sum reaction accelerator and a method for producing the same.
技術の背景
従来、セメントとアスベストとメチルセルロー
ズと水とを混練し、押出し成形機により押出し成
形し、得られた成形物を養生室にて自然養生し、
或るいはオートクレープ養生を行なうセメント押
出し成形品およびその製造方法が知られている。Background of the technology Conventionally, cement, asbestos, methylcellulose, and water are kneaded, extruded using an extruder, and the resulting molded product is naturally cured in a curing room.
Alternatively, cement extrusion molded products that undergo autoclave curing and methods for producing the same are known.
この方法で得られた押出し成形品は、押出し成
形機を用いて高圧で押出し成形されるために、高
比重の成形品しか得られなかつた。 Since the extruded product obtained by this method is extruded at high pressure using an extrusion molding machine, only a molded product with a high specific gravity can be obtained.
低比重のセメント押出し成形品を得るために、
上述の基本成分にバーライト、発泡合成樹脂粒な
どの発泡軽量骨材を混合することが試みられた
が、発泡軽量骨材は材料組成中に物理的に混合さ
れるのみであるために、軽量化は達成し得るも
のゝ、添加量に比例して曲げ、引張り、圧縮に対
する機械的強度が低下する欠点があつた。また押
出し成形時の加圧によつて、発泡軽量骨材自体が
破壊あるいは圧縮変形されて、添加の効果が充分
に発揮されない欠点があつた。また用いられる発
泡軽量骨材自体が高価であるために、低比重のセ
メント押出し成形品を安価に提供することができ
なかつた。 To obtain cement extrudates with low specific gravity,
Attempts have been made to mix foamed lightweight aggregates such as barlite and foamed synthetic resin particles with the above-mentioned basic ingredients; However, there was a drawback that the mechanical strength against bending, tension, and compression decreased in proportion to the amount added. Moreover, the foamed lightweight aggregate itself is destroyed or compressed and deformed by the pressure applied during extrusion molding, resulting in the disadvantage that the effect of addition cannot be fully demonstrated. In addition, since the foamed lightweight aggregate itself is expensive, it has not been possible to provide low specific gravity cement extrusion molded products at low cost.
本件出願人は、先にセメント、繊維質原料、製
紙スラツジ焼却灰およびセメントの水和反応促進
剤とを水性スラリーし、これを抄造して生マツト
原板を作り、該原板を養生硬化する無機質板の製
造方法につき特許出願をした（特願昭58−30765
号）。この方法は養生期間が長いと云う欠点があ
つた。 The applicant first made an aqueous slurry of cement, fibrous raw materials, paper sludge incineration ash, and a cement hydration reaction accelerator, made a raw pine board by paper-making this, and then cured and hardened the original board into an inorganic board. filed a patent application for the manufacturing method (patent application 1986-30765)
issue). This method had the drawback of requiring a long curing period.
発明の目的
上述の従来技術に鑑みて本発明は下記を目的と
している。OBJECTS OF THE INVENTION In view of the above-mentioned prior art, the present invention has the following objectives.
１） 低比重のセメント押出し成形品を安価に提
供すること、
２） 機械的強度のすぐれた軽量セメント押出し
成形品を提供すること、
３） 軽量セメント押出し成形品を能率よく製造
する方法を提供すること、
４） 初期材令における強度が改善された軽量セ
メント押出し成形品を提供すること、
発明の構成
本発明によれば、上述の諸目的は下記の構成に
より達成される。1) To provide low specific gravity cement extrusion molded products at low cost; 2) To provide lightweight cement extrusion molded products with excellent mechanical strength; 3) To provide a method for efficiently manufacturing lightweight cement extrusion molded products. 4) To provide a lightweight cement extrusion molded product with improved strength at the initial stage.Structure of the Invention According to the present invention, the above-mentioned objects are achieved by the following structure.
即ち、セメントと、セメントに対して５〜50重
量％の繊維質原料と、セメント及び繊維質原料の
全量に対して0.01〜５重量％のメチルセルローズ
と、上記全材料の全量に対して５〜70重量％のス
ラグと、10〜300重量％の製紙スラツジ焼却灰と、
セメント、繊維質材料の全量に対して0.01〜20重
量％の水和反応促進剤と、適量の水とより成る混
練物を押出し成形して養生硬化させることであ
る。 That is, cement, 5 to 50% by weight of fibrous raw material based on cement, 0.01 to 5% by weight of methylcellulose based on the total amount of cement and fibrous raw material, and 5 to 50% by weight based on the total amount of all the above materials. 70% by weight slag, 10-300% by weight paper sludge incineration ash,
A kneaded product consisting of a hydration reaction accelerator of 0.01 to 20% by weight based on the total amount of cement and fibrous material and an appropriate amount of water is extruded and cured.
本発明に使用されスラグは、シリカ（SiO2）
25〜40％、アルミナ（Al2O3）10〜25％、酸化第
二鉄（Fe2O3）0.3〜５％、酸化カルシウム
（CaO）35〜50％、マグネシア（MgO）0.5〜10
％の組成を有し、潜在水硬性を有する。 The slag used in the present invention is silica (SiO 2 )
25-40%, alumina ( Al2O3 ) 10-25%, ferric oxide ( Fe2O3 ) 0.3-5%, calcium oxide (CaO) 35-50%, magnesia (MgO) 0.5-10
% composition and has latent hydraulic properties.
本発明において用いられる製紙スラツジ焼却灰
は、紙、パルプ工場などから排出される製紙スラ
ツジを焼却して得られる。製紙スラツジは、従来
は産廃棄物として処理され、埋立地などに投棄さ
れて来た。製紙スラツジ焼却灰は嵩比重が0.5程
度であり、軽量増量材として用い得る。その組成
はシリカ（SiO2）25〜60％、アルミナ（Al2O3）
30〜60％、酸化第二鉄（Fe2O3）0.3〜３％、酸化
カルシウム（CaO）２〜12％、マグネシア
（MgO）0.4〜11％であり、潜在水硬性をも有す
る。 The paper sludge incineration ash used in the present invention is obtained by incinerating paper sludge discharged from paper and pulp factories. Paper sludge has traditionally been treated as industrial waste and disposed of in landfills. Paper sludge incineration ash has a bulk specific gravity of approximately 0.5 and can be used as a lightweight filler. Its composition is 25-60% silica (SiO 2 ), alumina (Al 2 O 3 )
30 to 60%, ferric oxide (Fe 2 O 3 ) 0.3 to 3%, calcium oxide (CaO) 2 to 12%, and magnesia (MgO) 0.4 to 11%, and also has latent hydraulic properties.
繊維質原料としては、アスベスト、炭素繊維、
合成樹脂、木質繊維などがあり、これらは単品も
しくは混合物として用いられ得る。 Fibrous raw materials include asbestos, carbon fiber,
Examples include synthetic resins and wood fibers, and these can be used singly or as a mixture.
繊維質原料の添加量が、セメントに対して５重
量％以下であると、押出し成形品の強度向上が得
られず、50％以上であると、押出し成形時の低抗
が大きくなり、連続押出しが困難となり、また成
形物の表面肌が悪くなる。 If the amount of fibrous raw material added is less than 5% by weight based on the cement, no improvement in the strength of the extruded product will be obtained, and if it is more than 50%, the resistance during extrusion will become large, making continuous extrusion difficult. It becomes difficult to do so, and the surface texture of the molded product becomes poor.
スラグの添加量がセメント、繊維質原料の全量
に対して５重量％以下であると湿度変化による長
さ変化率が大きくなり、70％以上であると吸水率
が大きくなり、吸水長さ変化が大きくなるので好
ましくない。 If the amount of slag added is less than 5% by weight based on the total amount of cement and fibrous raw materials, the length change rate due to humidity changes will be large, and if it is more than 70%, the water absorption rate will be large and the water absorption length change will be small. I don't like it because it gets bigger.
また、セメント、スラグ、焼却灰の水和反応促
進剤としては、アルカリ金属、アルカリ土類金
属、アンモニウムの硫酸塩、塩酸塩、炭酸塩、ケ
イ酸塩、アルミン酸塩、酢酸塩、蓚酸塩（たとえ
ば硫酸ナトリウム、硫酸カリウム、炭酸ナトリウ
ム、アルミン酸ソーダ、塩化カルシウム、塩化マ
グネシウム、硫酸アンモニウム、塩化アンモニウ
ム、酢酸アンモニウム、蓚酸アンモニウム）また
は硫酸アルミニウム含有物質（たとえばナトリウ
ム明ばん、かり明ばん）などの各種塩類、アルカ
リ金属、アルカリ土類金属の水酸化物（たとえば
苛性ソーダ、苛性カリ、水酸化カルシウム、水酸
化マグネシウム）などが用いられ得る。 In addition, hydration reaction accelerators for cement, slag, and incineration ash include alkali metals, alkaline earth metals, and ammonium sulfates, hydrochlorides, carbonates, silicates, aluminates, acetates, oxalates ( various salts, such as sodium sulfate, potassium sulfate, sodium carbonate, sodium aluminate, calcium chloride, magnesium chloride, ammonium sulfate, ammonium chloride, ammonium acetate, ammonium oxalate) or aluminum sulfate-containing substances (e.g. sodium alum, kary alum). , alkali metal, alkaline earth metal hydroxides (eg, caustic soda, caustic potash, calcium hydroxide, magnesium hydroxide), and the like can be used.
焼却灰の添加量が、セメントおよび繊維質原料
およびMCの全量に対して10重量％以下である
と、押出し成形品の機械的強度は向上するが比重
が高くなり、300％以上であると、逆に比重は低
下するものゝ機械的強度は低下する。 If the amount of incineration ash added is less than 10% by weight based on the total amount of cement, fibrous raw materials and MC, the mechanical strength of the extruded product will improve, but the specific gravity will become high; if it is more than 300%, Conversely, although the specific gravity decreases, the mechanical strength also decreases.
焼却灰の粒度は混合物へ分散、押出し時の混練
物の可塑性等により適宜選択され得るが、250〜
30メツシユパス程度が望ましい。 The particle size of the incinerated ash can be appropriately selected depending on the plasticity of the kneaded product during dispersion into the mixture and extrusion, but it is between 250 and 250.
Approximately 30 mesh passes is desirable.
水和反応促進剤の添加量は、セメント繊維質原
料の混合物に対して0.01重量％以下であると、添
加効果が少なく、20重量％以上であると、得られ
た成形品の長期材令における強度低下をもたら
す。 If the amount of the hydration reaction accelerator added is less than 0.01% by weight based on the mixture of cement fibrous raw materials, the effect of the addition will be small, and if it is more than 20% by weight, the long-term material age of the obtained molded product will increase. This results in a decrease in strength.
MCは、押出し成形促進剤であり、押出し成形
時に混練物からの脱水を防止して適度の水分を保
ち、混練物に適正な粘度と可塑性を与える。MC
の添加量がセメント、繊維質原料の全量に対して
0.01重量％以下であると保水性が不十分となり、
可塑性が悪くなる。その結果、押出し成形が不能
となつたり、成形物にクラツクを生ぜしめる。ま
た５重量％以上では、混練物の粘度が過大とな
り、成形が困難となる。 MC is an extrusion accelerator that prevents dehydration from the kneaded material during extrusion molding, maintains an appropriate amount of moisture, and gives the kneaded material appropriate viscosity and plasticity. MC
The amount added is based on the total amount of cement and fibrous raw materials.
If it is less than 0.01% by weight, water retention will be insufficient,
Plasticity deteriorates. As a result, extrusion molding becomes impossible or cracks occur in the molded product. Moreover, if it is 5% by weight or more, the viscosity of the kneaded product becomes too high, making it difficult to mold it.
セメント、繊維質原料、スラグ、焼却灰を望ま
しくは予じめ均一に混合し、これにMCと水和反
応促進剤と水を加えて均一に混練する。MCは粉
末状のもを予じめセメント等に均一に混合してお
いても良い。得られた混練物を押出し成形機に投
入して成形し、成形物をパレツトに受け、養生室
で自然養生硬するか、或るいはオートクレープ養
生を行ない、養生硬化した押出し成形品を得る。
また必要に応じて適量の生石灰、消石灰、ケイ石
を適宜に混合しても良い。 Cement, fibrous raw materials, slag, and incineration ash are preferably mixed uniformly in advance, and MC, hydration reaction accelerator, and water are added and kneaded uniformly. MC may be uniformly mixed in powder form with cement etc. in advance. The obtained kneaded product is put into an extrusion molding machine and molded, and the molded product is received on a pallet and cured naturally in a curing chamber or cured in an autoclave to obtain a cured extruded molded product.
Further, appropriate amounts of quicklime, slaked lime, and silica stone may be mixed as appropriate.
成形物の養生の間にセメントとスラグとの水和
反応によりケイ酸カルシウム水和物が生成され
る。 Calcium silicate hydrate is produced by the hydration reaction of cement and slag during curing of the moldings.
水和反応促進剤は、スラグ、セメント、製紙ス
ラツジ焼却灰の成分中に含まれる酸化カルシウム
の水和過程で生成する水酸化カルシウムと反応し
て硫酸カルシウムを生成し、これがセメントの水
和過程で生成するアルミン酸カルシウムの反応に
よりエトリンジヤイトを生成する。 The hydration reaction accelerator reacts with calcium hydroxide, which is generated during the hydration process of calcium oxide contained in the components of slag, cement, and paper sludge incineration ash, to produce calcium sulfate, which is produced during the hydration process of cement. Ettringite is produced by the reaction of the produced calcium aluminate.
製紙スラツジ焼却灰は、水硬性はあるものゝ初
期材令においては、その硬化反応はあまり進行し
ない。従つて製紙スラツジ焼却灰を添加した場合
には、初期材令においては強度を低下させる傾向
がある。しかし乍ら先に述べた如く、反応保進剤
の添加によるエトリンジヤイトの生成が成形品の
初期材令における強度を増強する。これによつて
製紙スラツジ焼却灰の大量添加が可能となる。 Although paper sludge incineration ash has hydraulic properties, its curing reaction does not progress much at the initial stage. Therefore, when paper sludge incineration ash is added, there is a tendency to reduce the strength of the initial material. However, as mentioned above, the formation of ettringite by the addition of a reactive preservative enhances the strength of the molded article at its initial stage. This makes it possible to add a large amount of paper sludge incineration ash.
更にスラグ、セメント、製紙スラツジ焼却灰の
潜在水硬性は、相補的に作用する。即ち、初期材
令ではセメントの水和物、ケイ酸カルシウム水和
物、エトリンジヤイトの生成により強度の増大が
得られ、また長期材令ではスラグ、製紙スラツジ
焼却灰の水硬性、ケイ酸カルシウム水和物の生成
により強度が増大し、しかも耐水性が向上し、そ
のために寸法安定性も改善される。 Furthermore, the latent hydraulic properties of slag, cement, and paper sludge incineration ash act in a complementary manner. In other words, in the early wood age, strength increases due to the formation of cement hydrate, calcium silicate hydrate, and ettringite, and in the long wood age, the increase in strength is obtained due to the formation of slag, the hydraulic properties of paper sludge incineration ash, and the calcium silicate hydrate. The formation of a product increases its strength and also improves its water resistance and therefore its dimensional stability.
本発明により得られた成形品は、従来方法によ
つて得られた同比重の製品に比して機械的強度が
増大し、或るいは従来方法により得られた同程度
の機械的強度の製品に比して比重が軽減し、湿度
変化に対して寸法変化率の安定が改善され、製紙
スラツジの有効利用と共に、安価に軽量コンクリ
ート押出し成形品を得ることが出来る。 The molded article obtained by the present invention has increased mechanical strength compared to a product of the same specific gravity obtained by a conventional method, or a product with the same mechanical strength obtained by a conventional method. The specific gravity is reduced compared to the conventional method, and the stability of the dimensional change rate against changes in humidity is improved, making it possible to effectively utilize paper sludge and to obtain lightweight concrete extrusion molded products at low cost.
Claims (1)
の繊維質原料と、セメント及び繊維質原料の全量
に対して0.01〜５重量％のメチルセルローズと、
上記材料の全量に対して各々５〜70重量％のスラ
グ及び製紙スラツジ焼却灰と、セメント及び繊維
質原料の全量に対して0.01〜20重量％の水和反応
促進剤と、適量の水とより成る組成の混練物を押
出し成形して養生硬化された押出し成形品。 ２ セメントと、セメントに対して５〜50重量％
の繊維質原料と、セメント及び繊維質原料との全
量に対して0.01〜５％重量％のメチルセルローズ
と、上記材料の全量に対して各々５〜70重量％の
スラグ及び製紙スラツジ焼却灰と、セメント及び
繊維質原料の全量に対して0.01〜20重量％の水和
反応促進剤と、適量の水とを混練し、押出し成形
機により押出し成形し、得られた成形物を自然養
生又はオートクレープ養生によつて養生硬化する
ことを特徴とする押出し成形品の製造方法。 ３ 上記製紙スラツジ焼却灰の粒度が250〜30メ
ツシユパスである特許請求の範囲第２項記載の方
法。 ４ 上記水和反応促進剤がアルカリ金属、アルカ
リ土類金属、アンモニウムの塩、硫酸アルミニウ
ム含有物質、アルカリ金属、アルカリ土類金属の
水酸化物の１種以上である上記第２項又は第３項
記載の方法。[Claims] 1. Cement and 5 to 50% by weight based on the cement
0.01 to 5% by weight of methylcellulose based on the total amount of cement and fibrous raw materials,
Slag and paper sludge incineration ash each in an amount of 5 to 70% by weight based on the total amount of the above materials, a hydration reaction accelerator in an amount of 0.01 to 20% by weight based on the total amount of cement and fibrous raw materials, and an appropriate amount of water. An extruded product made by extrusion molding a kneaded product with the following composition and curing and hardening. 2 Cement and 5 to 50% by weight of cement
, methyl cellulose in an amount of 0.01 to 5% by weight based on the total amount of cement and fibrous raw materials, and slag and paper sludge incineration ash in amounts of 5 to 70% by weight each based on the total amount of the above materials; A hydration reaction accelerator of 0.01 to 20% by weight based on the total amount of cement and fibrous raw materials is kneaded with an appropriate amount of water, extrusion molded using an extrusion molding machine, and the resulting molded product is subjected to natural curing or autoclaving. A method for manufacturing an extrusion molded product characterized by curing and hardening. 3. The method according to claim 2, wherein the paper sludge incineration ash has a particle size of 250 to 30 mesh pass. 4. Item 2 or 3 above, wherein the hydration reaction accelerator is one or more of alkali metal, alkaline earth metal, ammonium salts, aluminum sulfate-containing substances, alkali metal, alkaline earth metal hydroxides. Method described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59191468A JPS6172668A (en) | 1984-09-14 | 1984-09-14 | Extrusion molded product and manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59191468A JPS6172668A (en) | 1984-09-14 | 1984-09-14 | Extrusion molded product and manufacture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6172668A JPS6172668A (en) | 1986-04-14 |
| JPH0525824B2 true JPH0525824B2 (en) | 1993-04-14 |
Family
ID=16275154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59191468A Granted JPS6172668A (en) | 1984-09-14 | 1984-09-14 | Extrusion molded product and manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6172668A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5362319A (en) * | 1992-10-23 | 1994-11-08 | Johnson William B | Process for treating fly ash and bottom ash and the resulting product |
| US5346549A (en) * | 1992-10-23 | 1994-09-13 | Johnson William B | Environmentally stabilized products formed from ash and papermill waste |
| CN104119015A (en) * | 2014-06-25 | 2014-10-29 | 芜湖市三兴混凝土外加剂有限公司 | High-efficiency setting accelerator |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58120555A (en) * | 1982-01-09 | 1983-07-18 | 昭和電工株式会社 | Composition of asbestos cement for extrusion molding |
| JPS59156956A (en) * | 1983-02-28 | 1984-09-06 | 株式会社ノダ | Manufacture of inorganic construction material from incineration ash |
-
1984
- 1984-09-14 JP JP59191468A patent/JPS6172668A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58120555A (en) * | 1982-01-09 | 1983-07-18 | 昭和電工株式会社 | Composition of asbestos cement for extrusion molding |
| JPS59156956A (en) * | 1983-02-28 | 1984-09-06 | 株式会社ノダ | Manufacture of inorganic construction material from incineration ash |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6172668A (en) | 1986-04-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |