JPS5919056B2 - High insulation resistance cement composition - Google Patents
High insulation resistance cement compositionInfo
- Publication number
- JPS5919056B2 JPS5919056B2 JP55163403A JP16340380A JPS5919056B2 JP S5919056 B2 JPS5919056 B2 JP S5919056B2 JP 55163403 A JP55163403 A JP 55163403A JP 16340380 A JP16340380 A JP 16340380A JP S5919056 B2 JPS5919056 B2 JP S5919056B2
- Authority
- JP
- Japan
- Prior art keywords
- cement
- weight
- insulation resistance
- cement composition
- high insulation
- 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
Links
- 239000004568 cement Substances 0.000 title claims description 28
- 238000009413 insulation Methods 0.000 title claims description 15
- 239000000203 mixture Substances 0.000 title claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 18
- 239000010881 fly ash Substances 0.000 claims description 10
- 239000002893 slag Substances 0.000 claims description 10
- 239000011396 hydraulic cement Substances 0.000 claims description 7
- 229910001653 ettringite Inorganic materials 0.000 claims description 6
- 239000002243 precursor Substances 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 230000009257 reactivity Effects 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 239000000126 substance Substances 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000003513 alkali Substances 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 229910002026 crystalline silica Inorganic materials 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229920001732 Lignosulfonate Polymers 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000008055 alkyl aryl sulfonates Chemical class 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
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- -1 calcium sulfo-aluminum Chemical compound 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
- 150000001734 carboxylic acid salts Chemical class 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 239000005350 fused silica glass Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 229910052806 inorganic carbonate Inorganic materials 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000005332 obsidian Substances 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000176 sodium gluconate Substances 0.000 description 1
- 229940005574 sodium gluconate Drugs 0.000 description 1
- 235000012207 sodium gluconate Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 235000000346 sugar Nutrition 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 239000005335 volcanic glass 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
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Inorganic Insulating Materials (AREA)
Description
【発明の詳細な説明】
本発明は、フライアッシュ、高炉水砕スラグ及び（又は
）可溶性シリカを主成分とするポゾラン（以下単にボゾ
ランという）を含む水硬性セメントに、エトリンガイト
生成前駆物質と反応性が小さいか又は反応性のない不溶
性シリカ質物質（以下単に不溶性シリカ質物質という）
を含有してなる高絶縁抵抗性ビメント組成物に関するも
のであり、その目的は、セメント系材料として、ボルト
ランドセメントより１０〜１０００倍程度の絶縁抵抗性
（体積抵抗率）を有するセメント組成物を提供すること
にあるｏボルトランドセメントは、絶縁物であるにもか
かわらず使用の際には必然的に水を必要どするので非常
に絶縁抵抗性が低下するという問題点があり、又他の一
般的な絶縁材料としてのガラス、磁器、ゴム、樹脂など
は、セメント系材料に比較して高価であり、かつ成型性
、作業性などに難点がある。Detailed Description of the Invention The present invention provides a hydraulic cement containing pozzolan (hereinafter simply referred to as bozzolan) whose main components are fly ash, granulated blast furnace slag, and/or soluble silica. Insoluble siliceous substances with small or no reactivity (hereinafter simply referred to as insoluble siliceous substances)
The purpose is to use a cement composition having an insulation resistance (volume resistivity) about 10 to 1000 times higher than that of Boltland cement as a cement-based material. Although Voltland Cement is an insulator, it inevitably requires water when used, so there is a problem in that the insulation resistance is greatly reduced, and there are other problems. Common insulating materials such as glass, porcelain, rubber, and resin are more expensive than cement-based materials, and have drawbacks such as moldability and workability.
本発明者は、成型性と作業性にすぐれたセメント系材料
の絶縁抵抗性を高める方法について種々研究した結果、
フライアッシュ、高炉水砕スラグ及び（又は）ポゾラン
、エトリンガイド生成前、駆物質ならびに不溶性シリカ
質物質の特定量を含有した水硬性セメントを調整すれば
よいということを見出し、本発明に到達したものである
。As a result of various research into methods for increasing the insulation resistance of cementitious materials with excellent moldability and workability, the present inventor found that
The present invention was achieved by discovering that it is sufficient to prepare a hydraulic cement containing specific amounts of fly ash, granulated blast furnace slag and/or pozzolan, pre-forming etrin guide, precursor material, and insoluble siliceous material. It is something.
すなわち、本発明は、フライアッシュ、高炉水砕スラグ
及び（又は）ポゾランを含有してなる水硬性セメントに
、エトリンガイト生成前駆物質５〜３０重量％と不溶性
シリカ質物質１０〜５０重量％を含有してなる高絶縁抵
抗性セメント組成物である。That is, the present invention provides a hydraulic cement containing fly ash, granulated blast furnace slag, and/or pozzolan, containing 5 to 30% by weight of an ettringite formation precursor and 10 to 50% by weight of an insoluble siliceous material. This is a cement composition with high insulation resistance.
、 以下、詳しく本発明品について説明する。, The product of the present invention will be explained in detail below.
フライアッシュ、高炉水砕スラグ、ポゾランは共に水硬
性セメントの絶縁抵抗性を高めるために必要な成分であ
つて、これらは、その１種以上を合計量として、エトリ
ンガイト生成前、駆物質と不溶性シリカ質物質を含有し
ない水硬性セメントに対し１０重量％以上含有するのが
望ましい。Fly ash, granulated blast furnace slag, and pozzolan are all necessary components to increase the insulation resistance of hydraulic cement.The total amount of one or more of these components is used to form a precursor material and insoluble silica before ettringite formation. It is desirable that the content be 10% by weight or more based on hydraulic cement that does not contain any solid substances.
これらの物質の含有量が多くなるにつれて絶縁抵抗性が
高まるけれども、セメントの強度発現が低下するので、
その含有の上限は、フライアッシュ又はポゾランは５０
重量”程度、高炉水砕スラグは６０重量％程度である°
絶縁抵抗性と強度発現の点から、特に好ましいこれらの
含有量は、フライアツシユ又はボゾランは２０〜４０重
量％であり、高炉水砕スラグは３０〜５０重量％である
０セメントとしては、普通、早強、超早強、中庸熱、白
色のポルトランドセメントなどが使用される〇次に、エ
トリンガイド生成前駆物質は、その化学組成が水和後３
Ｃａ０−Ａｌ２Ｏ３・３ＣａＳ０４・３２Ｈ２０（エト
リンガイト）を生成する化学成分を有し、膨張性又は急
硬性などを有する物質であり、混練水をエトリンガイト
の中で３２モルの結晶水として固定し、その分自由水を
減少せしめ、それ自身は針状結晶となつて緻密な内部構
造をとり、絶縁抵抗性を高めるのに有効な物質である〇
具体的には、例えば、電気化学工業（株）登録商標「デ
ンカＣＳＡ」、日本セメント（株）商品名「アサノジプ
カル」、住友セメント（株）商品名［住友サツクス」な
どのカルシウムサルホアルミ不一ト系膨張材や、電気化
学工業（株）商品名１デンカＥＳ」、１−デンカＱＴ」
などのカルシウムアルミネートと石膏との混合物からな
るセメント急硬材があげられる０これの使用量は、本発
明品のセメント組成物中に５〜３０重量％であり、５重
量％未満では効果はなく、また、３０重量％をこえると
セメント自体が異常に膨張して強度発現に悪影響を与え
たり、急硬して作業性が低下する。As the content of these substances increases, the insulation resistance increases, but the strength development of cement decreases.
The upper limit of its content is 50% for fly ash or pozzolan.
The weight of granulated blast furnace slag is about 60% by weight.
From the viewpoint of insulation resistance and strength development, the particularly preferable contents are 20 to 40% by weight for fly ash or bozzolan, and 30 to 50% by weight for granulated blast furnace slag. Strong, ultra-early-strength, medium-heat, white Portland cement, etc. are used.Next, the Etrin guide generation precursor has a chemical composition of 3 after hydration.
It has a chemical component that produces Ca0-Al2O3・3CaS04・32H20 (ettringite), and is a substance that has expandability or rapid hardening properties.Kneading water is fixed as 32 moles of crystal water in ettringite, and that amount is free. It is a substance that reduces water, forms needle-like crystals and has a dense internal structure, and is effective for increasing insulation resistance. Denka CSA, Nippon Cement Co., Ltd.'s product name ``Asano Zipcal,'' Sumitomo Cement Co., Ltd.'s product name ``Sumitomo Satsukusu'' and other calcium sulfo-aluminum-based expansive materials, and Denka Kagaku Kogyo Co., Ltd.'s product name 1Denka ES. ", 1-Denka QT"
Examples include cement rapid hardening materials made of a mixture of calcium aluminate and gypsum.The amount of this used in the cement composition of the present invention is 5 to 30% by weight, and if it is less than 5% by weight, the effect will be ineffective. Moreover, if it exceeds 30% by weight, the cement itself will expand abnormally, which will have an adverse effect on the development of strength, or it will harden rapidly, reducing workability.
好ましい含有割合は、カルシウムサルホアルミネート系
膨張材を使用するときは５〜１０重量％であり、セメン
ト急硬材を使用するときは１０〜２０重量％である０エ
トリンガイト生成前駆物質として、セメント急硬材を使
用するときは、その作業性を確保するために、公知の凝
結遅延剤を用いるのが望ましく、これには糖類、オキシ
カルボン酸及びその塩、カリウム（ソーダなどの無機炭
酸塩、脂肪族カルボン酸塩、などの１種又は２種以上で
ある。その添加量としては、最終セメント組成物に対し
０．１〜２重量％程度が用いられる〇次に、不溶性シリ
カ質物質は、セメントの絶縁抵抗性を高めるのに非常に
有効な成分であるが、その大部分が不溶性のためセメン
トの水和によつて生じるＣａ（０Ｈ）２と含有するＣａ
ｓＯ４と反応する潜在水硬性はほとんどないので、強度
などの力学的性状の面から、その割合が限定される０す
なわち、その含有割合は、本発明品のセメント組成物中
に１０〜５０重量％であり、１σ重量％よりも少量を配
合しても、絶縁抵抗性をより高める効果はなく、また、
５０重量％をこえて配合すると、絶縁抵抗性は非常に良
好となるが、強度発現が非常に悪くなり、かつ材料費も
高価になるので好ましくない。The preferred content is 5 to 10% by weight when using a calcium sulfoaluminate-based expansive material, and 10 to 20% by weight when using a cement hardening material. When using hardwood, it is desirable to use known setting retarders to ensure workability, including sugars, oxycarboxylic acids and their salts, potassium (inorganic carbonates such as soda, fats, The insoluble siliceous substance is one or more of the group carboxylic acid salts, etc.The amount added is about 0.1 to 2% by weight based on the final cement composition.Next, the insoluble siliceous substance is Although it is a very effective component in increasing the insulation resistance of
Since there is almost no latent hydraulicity that reacts with sO4, its proportion is limited in terms of mechanical properties such as strength.In other words, its content is 10 to 50% by weight in the cement composition of the present invention. Therefore, even if a small amount than 1σ weight % is added, there is no effect of further increasing insulation resistance, and
If the amount exceeds 50% by weight, the insulation resistance will be very good, but the strength development will be very poor and the material cost will be high, which is not preferable.
そこで電気的性状と力学的性状などの総合的見地から、
２０〜４０重量％が特に好ましい含有割合である〇不溶
性シリカ質物質の具体例としては、高純度結晶質シリカ
微粉又は溶融急冷した高純度非晶質シリカ微粉、耐アル
カリガラス繊維、ガラス粉末、火山ガラス、パーライト
などが挙げられ、それらの１種又は２種以上を併用して
もよい０このように、反応性が小さいか又は反応性のな
いシリカ質物質としては、結晶質でも非晶質でもどちら
でもよいが、ＳｉＯ２純度が高いものがより好ましく、
その点において、高純度結晶質又は非晶質シリカ微粉が
特に好ましく、また、それらと耐アルカリガラス繊維と
を併用すれば、最も効果が顕著であるｏ以上、説明した
通り、本発明品は、フライアツシユ、高炉水砕スラグ及
び（又は）ポゾランを含有してなる水硬性セメントに、
特定量の不溶性シリカ質物質とエトリンガイト生成前駆
物質とを含有した高絶縁抵抗性セメント組成物であるが
、それを注水して混練物を調合する際に、その使用水量
を減少させて、流動性と作業性を確保するために、例え
ば、アルキルアリルスルフオン酸塩ホルマリン高縮合物
、メラミンスルフオン酸塩ホルマリン高縮合物、リグニ
ンスルフオン酸塩などのセメント減水剤を全セメント組
成物に対し０．１〜２重量％程度を添加するのが望まし
く、さらには、一般のセメント混合材料を添加しても一
向に差支えはないＯまた、その際の混練物は、ペースト
、モルタル又はコンクリートのいずれであつてもよい℃
また、本発明品の用途としては、種々考えられるが、土
木建築分野では、構造物自体の絶縁抵抗性をより高める
ために、例えば、発電所、電解工場、鉄道などの絶縁工
事、電気関連分野では、電気製品などの絶縁性接着材と
して使用できる〇本発明は、フライアツシユ、高炉水砕
スラグのような産業廃棄物及びボゾラン物質の有効利用
にもなり、省資源、省エネルギーの見地からみても本発
明の意義は大きい〇次に、実施例をあげてさらに詳しく
説明する〇実施例表に示す配合割合のセメント組成物に
対し、セメント減水剤として花王石鹸（株）登録商標「
マイテ４１００」を０．５重量憾添加した０またセメン
ト急硬材を用いる場合は、クエン酸、炭酸カリウム、お
よびグルコン酸ソーダの３成分系凝結遅延剤をセメント
組成物に対し、０．２５重量％添加した〇なお、各種原
料はそれぞれ次のものを用い、表の記号はそれぞれを表
わす〇（４）普通ボルトランドセメント・・・電気化学
工業（株）（Ｂ）フライアツシユ・・・常盤火力産業（
株）（Ｃ）高炉水砕スラグ・・・新日本製鉄（株）（Ｄ
）ポゾラン・・田本活性白土（株）（Ｆ４）商品名１デ
ンカＱＴ−１５００」（セメント急硬材）・・・電気化
学工業（株）（ト）商品名「デンカＣＳＡ≠２０」（膨
張材）・・・・電気化学工業（株）（Ｏ溶融シリカ（非
晶質シリカ）・・・電気化学工業（株）ｌハイシリカ（
結晶質シリカ）・・・ハイシリカ工業（株）（１）耐ア
ルカリガラス繊維・・・ピルキントン社（Ｊ）ウインラ
イト（火山ガラス）・・・イヂチ化成（株）（代）フヨ
ーライト（黒曜岩パーライト）・・・フヨーライト工業
（株）また、電気絶縁抵抗性は、体積抵抗率を測定する
ことにより判断するものとし、それをＡＳＴＭＤ２５７
−７８に準じて測定した０測定条件は、水セメント比３
０％のセメントペースト供試体を作成し、２０３ＣＲＨ
６０％の部屋でＤＣｌＯＯの印加電圧で測定したもので
ある０実験腐１〜１１は比較例、実験滝１２〜２４は本
発明の実施例である〇さらに、表のセメント組成物を用
いて供試体寸法が４Ｘ４×１６ｃＴｎのモルタルを成形
し、打ち込み後１日間は２『Ｃ，８Ｏ％ＲＨ養生、以後
２０℃，６０％ＲＨ養生した後に材令７日の圧縮強度を
測定した。Therefore, from a comprehensive standpoint such as electrical properties and mechanical properties,
A particularly preferred content ratio is 20 to 40% by weight. Specific examples of insoluble siliceous substances include high-purity crystalline silica fine powder, high-purity amorphous silica fine powder melted and quenched, alkali-resistant glass fiber, glass powder, and volcanic acid. Examples include glass and perlite, and one or more of them may be used in combination.In this way, siliceous substances with low reactivity or no reactivity may be crystalline or amorphous. Either one is fine, but one with high SiO2 purity is more preferable.
In this respect, high-purity crystalline or amorphous silica fine powder is particularly preferable, and the most significant effect is obtained when they are used in combination with alkali-resistant glass fiber. Hydraulic cement containing fly ash, granulated blast furnace slag and/or pozzolan,
This is a high insulation resistance cement composition containing a specific amount of an insoluble siliceous substance and an ettringite formation precursor, but when pouring water into it to prepare a kneaded product, the amount of water used is reduced and fluidity is improved. In order to ensure workability, cement water reducing agents such as alkylaryl sulfonate formalin high condensate, melamine sulfonate formalin high condensate, and lignin sulfonate are added to the entire cement composition. It is desirable to add about 1 to 2% by weight, and there is no problem even if a general cement mixture material is added. ℃
In addition, there are various possible uses for the product of the present invention, but in the field of civil engineering and construction, for example, insulation work at power plants, electrolytic plants, railways, etc., and electrical related fields. Therefore, the present invention can be used as an insulating adhesive for electrical products, etc. The present invention also makes effective use of industrial waste such as fly ash and granulated blast furnace slag, and bozolan substances, making it an excellent material from the standpoint of resource and energy conservation. The significance of the invention is great〇Next, it will be explained in more detail with examples〇〇For cement compositions with the mixing ratios shown in the example table, Kao Soap Co., Ltd. registered trademark "" was used as a cement water reducer.
0.5 weight of "Mayte 4100" was added to the cement composition. Also, when using a cement rapid hardening material, 0.25 weight of a three-component setting retarder of citric acid, potassium carbonate, and sodium gluconate was added to the cement composition. % added〇The following raw materials were used, and the symbols in the table represent the respective ones〇(4) Ordinary Voltland Cement: Denki Kagaku Kogyo Co., Ltd. (B) Fly Ash: Tokiwa Thermal Power Industry Co., Ltd. (
Ltd. (C) Granulated blast furnace slag... Nippon Steel Corporation (D
) Pozzolan... Tamoto Active Hakuto Co., Ltd. (F4) Product Name 1 Denka QT-1500" (Cement Rapid Hardening Material) Denki Kagaku Kogyo Co., Ltd. (G) Product Name "Denka CSA≠20" (Expansion) material)...Denki Kagaku Kogyo Co., Ltd. (O fused silica (amorphous silica)...Denki Kagaku Kogyo Co., Ltd. l High Silica (
Crystalline silica) Hi-Silica Kogyo Co., Ltd. (1) Alkali-resistant glass fiber Pilkington Co., Ltd. (J) Winlite (volcanic glass) Ijichi Kasei Co., Ltd. Fuyorite (obsidian pearlite) )... Fuyorite Kogyo Co., Ltd. Electrical insulation resistance shall be determined by measuring the volume resistivity, and it shall be determined according to ASTM D257.
-78, the water-cement ratio is 3.
A 0% cement paste specimen was created and 203CRH
Experiments 1 to 11 are comparative examples, and Experiments 12 to 24 are examples of the present invention, which were measured with an applied voltage of DClOO in a 60% room. A mortar with specimen dimensions of 4 x 4 x 16 cTn was molded, and after being cured at 2'C and 80% RH for one day after casting, and thereafter at 20° C. and 60% RH, the compressive strength was measured at 7 days of age.
Claims (1)
性シリカを主成分とするポゾランを含有してなる水硬性
セメントに、エトリンガイト生成前駆物質５〜３０重量
％と反応性が小さいか又は反応性のない不溶性シリカ質
物質１０〜５０重量％を含有してなる高絶縁抵抗性セメ
ント組成物。1 Hydraulic cement containing pozzolan mainly composed of fly ash, granulated blast furnace slag, and/or soluble silica, with low reactivity or no reactivity with 5 to 30% by weight of ettringite formation precursors. A high insulation resistance cement composition comprising 10 to 50% by weight of an insoluble siliceous material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55163403A JPS5919056B2 (en) | 1980-11-21 | 1980-11-21 | High insulation resistance cement composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55163403A JPS5919056B2 (en) | 1980-11-21 | 1980-11-21 | High insulation resistance cement composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5788047A JPS5788047A (en) | 1982-06-01 |
| JPS5919056B2 true JPS5919056B2 (en) | 1984-05-02 |
Family
ID=15773225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55163403A Expired JPS5919056B2 (en) | 1980-11-21 | 1980-11-21 | High insulation resistance cement composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5919056B2 (en) |
-
1980
- 1980-11-21 JP JP55163403A patent/JPS5919056B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5788047A (en) | 1982-06-01 |
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