JPS63236743A - Hydraulic cement composition - Google Patents
Hydraulic cement compositionInfo
- Publication number
- JPS63236743A JPS63236743A JP7250987A JP7250987A JPS63236743A JP S63236743 A JPS63236743 A JP S63236743A JP 7250987 A JP7250987 A JP 7250987A JP 7250987 A JP7250987 A JP 7250987A JP S63236743 A JPS63236743 A JP S63236743A
- Authority
- JP
- Japan
- Prior art keywords
- cement
- cement composition
- blast furnace
- mixed
- hydraulic cement
- 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.)
- Pending
Links
- 239000000203 mixture Substances 0.000 title claims description 6
- 239000011396 hydraulic cement Substances 0.000 title claims description 4
- 239000004568 cement Substances 0.000 claims description 31
- 239000011398 Portland cement Substances 0.000 claims description 13
- 239000000843 powder Substances 0.000 claims description 8
- 239000002893 slag Substances 0.000 claims description 8
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 7
- 230000006378 damage Effects 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 238000010304 firing Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000234282 Allium Species 0.000 description 1
- 235000002732 Allium cepa var. cepa Nutrition 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000006253 efflorescence Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000009746 freeze damage Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔技術分野〕
石綿、その他の補強繊維と混合して建築用繊維セメント
板を製造するに適した水硬性セメント組成物に関するも
ので、抄造法、押し出し成形法等に特に適したものであ
る。[Detailed Description of the Invention] [Technical Field] This field relates to a hydraulic cement composition suitable for manufacturing fiber cement boards for construction by mixing with asbestos and other reinforcing fibers, and is particularly applicable to papermaking methods, extrusion molding methods, etc. It is suitable.
ポルトランドセメントの鉱物組成として、Ｃ３Ａ成分が
１０％を越える傾向にある。それは、焼成してポルトラ
ンドセメントを製造する場合、二ネｐギーを少くして焼
成を行わんとし、而も初期強度を確保せんとしているた
めである。As for the mineral composition of Portland cement, the C3A component tends to exceed 10%. This is because when producing Portland cement by firing, the firing is performed with a small amount of green onion, and at the same time, the initial strength is to be ensured.
しかし、セメント二次製品用に該セメントを使用した場
合、種々の問題点が生じていた。However, when this cement is used for secondary cement products, various problems have arisen.
即ち、ＣｓＡ成分が１０％を越えるポルトランドセメン
トは初期水利が活発な牟め、スフリー状にした場合、ボ
ットフイ７が低下し、セメント二次製品の強度劣化が大
きいものであった。That is, when Portland cement with a CsA content of more than 10% was made into a soufflé form with active initial water use, the bottability 7 decreased and the strength of the secondary cement product deteriorated significantly.
又、Ｃ３Ａ成分が１０％を越える普通ポルトランドセメ
ントはセメント硬化時の寸法収縮が大きく養生中にクツ
ツクが発生しやすいものであった。In addition, ordinary Portland cement with a C3A content of more than 10% has a large dimensional shrinkage when the cement hardens and is prone to cracking during curing.
又、Ｃ３Ａ成分が１０％を越える普通ポルトランドセメ
ントはセメント硬化体がブアなため、製品の耐凍害性が
低下するものでら・りた。In addition, ordinary Portland cement with a C3A content exceeding 10% has a hardened cement product, which reduces the frost damage resistance of the product.
本発明はＣ，Ａ成分が１０％を越える普通ポルトランド
セメントを用いても、セメント二次製品が緻密で耐凍害
性の高い建築用繊維セメント板を得ることができるもの
である。The present invention makes it possible to obtain architectural fiber cement boards with dense secondary cement products and high freeze damage resistance even when using ordinary Portland cement containing more than 10% of C and A components.
本発明では、普通ポルトランドセメントに中庸熱セメン
トまたは耐硫酸塩セメントを１０乃至お重量％内側混合
する。中庸熱セメント、耐硫酸塩セメントはＣ，Ａ量が
少いものであシ、普通ポルトランドセメントのＣ，Ａ
ｉｋをコントローμするものである。この混合セメント
に高炉水砕スラグ粉末を混合する。この場合、高炉水砕
スラグ粉は上記混合セメン）Ｋ対し、ｌＯ乃至５０重量
％内側で混合する。ここで、内側で混合するとは、普通
ポルトランドセメントの１０乃至お重量％を中庸熱セメ
ントまたは耐硫酸塩セメントで置換することであシ、混
合セメントの１０乃至５０１ｉ量％を高炉水砕スラグ粉
末で置換することである。かくしてなる水硬性セメント
組成物を用いて建築用繊維セメント板を形成すると、こ
の建築用繊維セメント板は白華が少く、緻密で耐凍害性
の高いものである。In the present invention, normal Portland cement is internally mixed with moderate heat cement or sulfate-resistant cement in an amount of 10 to 10% by weight. Moderate heat cement and sulfate-resistant cement have a small amount of C and A, while ordinary Portland cement has a small amount of C and A.
This is to control ik. Granulated blast furnace slag powder is mixed with this mixed cement. In this case, the granulated blast furnace slag powder is mixed with the above-mentioned mixed cement (K) at an amount of 10 to 50% by weight. Here, mixing inside means replacing 10 to 50% by weight of ordinary Portland cement with moderate heat cement or sulfate-resistant cement, and 10 to 501i mass% of the mixed cement with granulated blast furnace slag powder. It is to replace. When a fiber cement board for construction is formed using the hydraulic cement composition thus obtained, the fiber cement board for construction has little efflorescence, is dense, and has high frost damage resistance.
尚、中庸熱セメントの０３Ａ。量は８％以下であシ、耐
硫酸塩セメントのＣ３Ａ量は５％以下である。In addition, 03A is a moderate heat cement. The amount of C3A is not more than 8%, and the amount of C3A in the sulfate-resistant cement is not more than 5%.
次に実施例を従来例、対照例と共に示す。Next, examples will be shown together with conventional examples and comparative examples.
第 １ 表
第 ２ 表
第１表は、普通ポルトランドセメント、中庸熱セメント
、高炉水砕スラグ粉の組合せの実施例１．２を従来例、
対照例と共に示すものである。この実施例１．２から明
白であるように、実施例１．２の配合で得られた繊維セ
メント板は強度が大で耐凍害性の優れたもので、クツツ
クの発生が少いものである。Table 1 Table 2 Table 1 shows Examples 1 and 2 of the combinations of ordinary Portland cement, moderate heat cement, and granulated blast furnace slag powder, as well as conventional examples,
It is shown together with a control example. As is clear from this Example 1.2, the fiber cement board obtained with the formulation of Example 1.2 has high strength and excellent frost damage resistance, and is less prone to cracking.
尚、対照例１かられかるように、高炉水砕スラグ粉量が
５０％を超克ると耐凍害性が低下するものである。As can be seen from Comparative Example 1, when the amount of granulated blast furnace slag powder exceeds 50%, the frost damage resistance decreases.
又、対照例２かられかるように中庸熱セメントだけでは
強度発現が悪いものである。Furthermore, as can be seen from Comparative Example 2, strength development is poor when only moderate heat cement is used.
９２表は、普通ポルトランドセメント、耐硫酸塩セメン
ト、高炉水砕スラグ粉の組合せの実施例を示すものであ
る。Table 92 shows examples of combinations of ordinary Portland cement, sulfate-resistant cement, and granulated blast furnace slag powder.
本発明は、中庸熱セメントまたはｌＷｔ硫酸塩セメント
と普通ポルトランドセメントを特定の割合で混合し、更
に高炉水砕スラグ粉を特定の割合で混合してなるために
二次セメント製品とした場合に耐凍害性が優れ、強度が
大であシ、而も賽生中のクツツクが発生し難いものであ
る。The present invention is made by mixing medium heat cement or 1Wt sulfate cement and ordinary Portland cement in a specific ratio, and further mixing granulated blast furnace slag powder in a specific ratio, so that it has a high resistance when used as a secondary cement product. It has excellent resistance to frost damage, is very strong, and is difficult to cause cracking during production.
特許出閲人 松下電工株式会社 代理人弁理士 竹 元 敏 丸 （ほか２名）patent reviewer Matsushita Electric Works Co., Ltd. Representative Patent Attorney Toshimaru Takemoto (2 others)
Claims (1)
ルトランドセメントの１０乃至３０重量％内割で混合し
てなる混合セメントに高炉水砕スラグ粉を１０乃至５０
重量％内割で混合してなる水硬性セメント組成物。(1) Add 10 to 50% of granulated blast furnace slag powder to a mixed cement made by mixing moderate heat cement or sulfate-resistant cement at 10 to 30% by weight of normal Portland cement.
Hydraulic cement composition mixed in weight percentage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7250987A JPS63236743A (en) | 1987-03-26 | 1987-03-26 | Hydraulic cement composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7250987A JPS63236743A (en) | 1987-03-26 | 1987-03-26 | Hydraulic cement composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63236743A true JPS63236743A (en) | 1988-10-03 |
Family
ID=13491382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7250987A Pending JPS63236743A (en) | 1987-03-26 | 1987-03-26 | Hydraulic cement composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63236743A (en) |
-
1987
- 1987-03-26 JP JP7250987A patent/JPS63236743A/en active Pending
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