JPS5951506B2 - cement composition - Google Patents
cement compositionInfo
- Publication number
- JPS5951506B2 JPS5951506B2 JP14231879A JP14231879A JPS5951506B2 JP S5951506 B2 JPS5951506 B2 JP S5951506B2 JP 14231879 A JP14231879 A JP 14231879A JP 14231879 A JP14231879 A JP 14231879A JP S5951506 B2 JPS5951506 B2 JP S5951506B2
- Authority
- JP
- Japan
- Prior art keywords
- cement
- calcium sulfate
- weight
- charcoal
- present
- 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 14
- 239000000203 mixture Substances 0.000 title claims description 9
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 26
- 239000003610 charcoal Substances 0.000 claims description 15
- 239000013535 sea water Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000011398 Portland cement Substances 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 150000004683 dihydrates Chemical class 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000255925 Diptera Species 0.000 description 1
- 229920001732 Lignosulfonate Polymers 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 102000006463 Talin Human genes 0.000 description 1
- 108010083809 Talin Proteins 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000002802 bituminous coal Substances 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000005087 graphitization Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- -1 melamine sulfonates Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 150000002826 nitrites Chemical class 0.000 description 1
- 239000003415 peat Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
【発明の詳細な説明】
本発明はセメンｌ−組成物、特に耐海水性および耐硫酸
塩性の大なるセメント組成物に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to cement compositions, particularly seawater and sulfate resistant cement compositions.
従来からこのような目的のセメンＩ・組成物を得るため
、例えば侵食を受は易い３ＣａＯ−Ａ Ｉ□０３などの
鉱物の生成を少くしたり、また多量のポゾラン物質を添
加し水和生成する消石灰を不溶性ゲルとして固定する方
法がある。Conventionally, in order to obtain a cement I composition for this purpose, for example, the production of minerals such as 3CaO-A I□03, which are easily susceptible to erosion, has been reduced, or a large amount of pozzolanic substances have been added to produce hydration. There is a method of fixing slaked lime as an insoluble gel.
しかし、前者は、その配合物の焼成が困難なため低石灰
飽和型の初期強度の小さいセメントとなること、また後
者は強度発現性が低いセメントどなるという欠点がある
。However, the former has the disadvantage that it is difficult to calcinate the mixture, resulting in a low-lime-saturated cement with low initial strength, and the latter results in a cement with low strength development.
本発明者は、セメントの強度発現性を低下させることな
く、海水や硫酸塩に対する抵抗性を高めるため、種々研
究を行った結果、ポルトランドセメンＩ・タリン力−に
特定量の硫酸カルシウムと焼成炭を添加すればよいとい
う知見にもとすき本発明に到ったもので゛ある。In order to increase the resistance to seawater and sulfates without reducing the strength development of cement, the present inventor conducted various studies and found that a specific amount of calcium sulfate and calcined charcoal were added to Portland cement I/talin. The present invention was also based on the knowledge that it is sufficient to add .
すなわち、本発明は、硫酸カルシウムをＳＯ３として２
〜６重量％と焼成炭を２〜１０重量％となるように含有
させたことを特徴とする。That is, the present invention converts calcium sulfate into 2
It is characterized in that it contains 2 to 10% by weight of charcoal and 2 to 10% by weight of burnt charcoal.
本発明において、硫酸カルシウムとは２水石こう、半水
石こう、可溶性ＩＩＩ型石こう、ＩＩ型無水石こうから
選ばれた１種以上のものであって、その割合はセメント
中にＳＯ３として２〜６重量％の含有量であり、この範
囲外では海水に対する抵抗性が小となる。In the present invention, calcium sulfate is one or more selected from dihydrate gypsum, hemihydrate gypsum, soluble type III gypsum, and type II anhydrous gypsum, and the proportion thereof is 2 to 6 weight as SO3 in cement. %, and if the content is outside this range, the resistance to seawater will be low.
また、本発明でいう焼成炭とは、黒鉛化率２０％以下に
焼成し揮発分を除去した炭素材料であって、例えば泥炭
、瀝青炭、無鉛炭などの炭素材料を温度７００〜１２０
０℃程度で焼成したものである。Furthermore, the term "calcined charcoal" used in the present invention refers to a carbon material that has been fired to a graphitization rate of 20% or less to remove volatile matter, such as peat, bituminous coal, or unleaded coal, at a temperature of 700 to 120%.
It was fired at about 0°C.
焼成炭の割合はセメント中に２〜１０重量％好ましくは
４〜８重量％含有量である。The proportion of calcined charcoal in the cement is 2 to 10% by weight, preferably 4 to 8% by weight.
焼成炭の含有量が２重量％未満では海水に対する抵抗性
が小さく、また１０重量％をこえても海水に対する抵抗
性はそれ稚内上せず、反って強度が低下する。If the content of calcined charcoal is less than 2% by weight, the resistance to seawater will be low, and even if it exceeds 10% by weight, the resistance to seawater will not increase, but will warp and the strength will decrease.
本発明品の製造法としては、粉末状の硫酸カルシウムと
焼成炭とをポルトランドセメンＩ・クリンカー粉末と混
合するか、またはポルＩ・ランドセメンＩ・クリンカー
、硫酸カルシウム、焼成炭を同時にミルで粉砕するか、
または市販のポル１−ランドセメントの硫酸カルシウム
量を調節しこれに焼成炭を添加するなどの方法によって
製造することができる。The product of the present invention can be manufactured by mixing powdered calcium sulfate and calcined charcoal with Portland cement I clinker powder, or by simultaneously pulverizing Pol I, Landcemen I clinker, calcium sulfate, and calcined charcoal in a mill. mosquito,
Alternatively, it can be produced by adjusting the amount of calcium sulfate in commercially available Pol 1-Rand cement and adding burnt charcoal to it.
本発明品の使用にあたっては、各種のセメント添加剤、
例えばポリアルキルアリールスルホン酸のホルムアルテ
゛ヒト縮合物塩、リグニンスルホン酸塩、メラミンスル
ホン酸塩などのセメンＩ・減水剤や亜硝酸塩を主剤とす
る防錆剤等を添加すれば、それ相当の効果を発現する。When using the product of the present invention, various cement additives,
For example, if you add cement I/water reducers such as formaldehyde condensate salts of polyalkylarylsulfonic acids, lignin sulfonates, melamine sulfonates, and rust preventive agents based on nitrites, a corresponding effect can be achieved. do.
なお、これらのセメント添加剤を添加した場合において
も硫酸カルシウムおよび焼成炭の含有量は、本発明で限
定した前記範囲と変わることはない。Note that even when these cement additives are added, the contents of calcium sulfate and calcined charcoal do not change from the ranges defined in the present invention.
以下実施例をあげてさらに説明する。The present invention will be further explained below with reference to Examples.
実施例
第１表の組成を有する普通ポルトランドセメントクリン
カ−に硫酸カルシウムおよび焼成炭を種種の割合で配合
し、同時粉砕し、その粉砕品をＪＩＳモルタル試験用に
成型した。EXAMPLES Calcium sulfate and calcined charcoal were blended in various proportions to ordinary Portland cement clinker having the composition shown in Table 1, and the mixture was simultaneously pulverized, and the pulverized products were molded for JIS mortar testing.
その成型体を材令１４日まで水中養生を行なった後、Ｍ
ｇＳＯ４とＮａＣ１で飽和した塩水中に６ケ月間養生し
た。After curing the molded body in water until the age of 14 days, M
It was cured for 6 months in brine saturated with gSO4 and NaCl.
これらについて物性試験を行なった。Physical property tests were conducted on these.
その条件お°よび結果を第２表に示す。The conditions and results are shown in Table 2.
第２表の実験洗１゜２、 ７．１９および２０は比較例
である。Experimental washes 1°2, 7.19 and 20 in Table 2 are comparative examples.
なお、使用した硫酸カルシウムの２水塩は純薬、１／２
水塩、ＩＩＩ型およびゴＩ型は純薬の２水塩を使用しそ
れぞれ１３０℃、２００℃および１０００℃で２時間焼
成したものである。In addition, the calcium sulfate dihydrate used was pure medicine, 1/2
Water salt, Type III, and Go I type were prepared using pure chemical dihydrate and calcined at 130°C, 200°C, and 1000°C for 2 hours, respectively.
また焼成炭はベトナム産の無煙炭を１０００℃で２時間
焼成したものを使用した。The fired charcoal used was anthracite from Vietnam that was fired at 1000°C for 2 hours.
また第２表中の配合中の硫酸カルシウムはＳＯ３として
表示した。Further, calcium sulfate in the formulation in Table 2 is expressed as SO3.
以上の結果から明らかな通り、硫酸カルシウムと焼成炭
が共に本発明の範囲内にあるとき、曲げ強度は増大し、
普通ポルトランドセメント仕様の水中養生した値と同等
以上の強度を示す。As is clear from the above results, when calcium sulfate and calcined charcoal are both within the scope of the present invention, the bending strength increases,
Shows strength equal to or higher than that of ordinary Portland cement when cured in water.
また、塩水中における膨張は、焼成炭が２重量％以上で
は添加量の増加に従って減少し、硫酸カルシウムはＳＯ
３として４重量％付近で最小の膨張量を示し、２〜６重
量％が最適範囲であることがわかる。In addition, the expansion in salt water decreases as the amount of calcined charcoal increases over 2% by weight, and calcium sulfate
It can be seen that the amount of expansion is the minimum at around 4% by weight as No. 3, and the optimum range is from 2 to 6% by weight.
Claims (1)
１０重量％の焼成炭とを含有させてなるセメント組成物
。1 2-6% by weight of calcium sulfate as S03 and 2-
A cement composition containing 10% by weight of burnt charcoal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14231879A JPS5951506B2 (en) | 1979-11-02 | 1979-11-02 | cement composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14231879A JPS5951506B2 (en) | 1979-11-02 | 1979-11-02 | cement composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5669250A JPS5669250A (en) | 1981-06-10 |
| JPS5951506B2 true JPS5951506B2 (en) | 1984-12-14 |
Family
ID=15312559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14231879A Expired JPS5951506B2 (en) | 1979-11-02 | 1979-11-02 | cement composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5951506B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6065755A (en) * | 1983-09-20 | 1985-04-15 | 電気化学工業株式会社 | Underwater concrete composition |
-
1979
- 1979-11-02 JP JP14231879A patent/JPS5951506B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5669250A (en) | 1981-06-10 |
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