JPH0764656B2 - Curing method for secondary cement products - Google Patents
Curing method for secondary cement productsInfo
- Publication number
- JPH0764656B2 JPH0764656B2 JP12124586A JP12124586A JPH0764656B2 JP H0764656 B2 JPH0764656 B2 JP H0764656B2 JP 12124586 A JP12124586 A JP 12124586A JP 12124586 A JP12124586 A JP 12124586A JP H0764656 B2 JPH0764656 B2 JP H0764656B2
- Authority
- JP
- Japan
- Prior art keywords
- curing
- shelf
- cement
- secondary product
- product
- 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 title claims description 40
- 238000001723 curing Methods 0.000 title description 56
- 238000000034 method Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 238000006703 hydration reaction Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000002845 discoloration Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000007581 slurry coating method Methods 0.000 description 2
- 230000002411 adverse Effects 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
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
- C04B40/0263—Hardening promoted by a rise in temperature
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
【発明の詳細な説明】 a. 発明の目的 （産業上の利用分野） 本発明は、例えば瓦、ブロック等のセメント二次製品を
製造する工場において、成型を終えた未硬化セメント製
品を養生硬化させる方法に関する。DETAILED DESCRIPTION OF THE INVENTION a. Purpose of the invention (field of industrial application) The present invention is for curing an uncured cement product that has been molded in a factory for manufacturing cement secondary products such as roof tiles and blocks. Regarding how to make.
（従来の技術） モルタルを加圧成型して、瓦やブロック等のセメント二
次製品を造る事が広く行なわれているが、この様なセメ
ント二次製品は、成型後単に乾燥させただけでは十分な
強度を得られない。この為、成型後のセメント二次製品
を加温して養生硬化させる事が従来から行なわれてい
る。(Prior Art) It is widely practiced to press-mold mortar to produce cement secondary products such as roof tiles and blocks. However, such cement secondary products are simply dried after molding. You cannot get enough strength. For this reason, it has been conventionally practiced to heat the cement secondary product after molding to cure it.
従来の養生方法に於いては、先ず成型した未硬化のセメ
ント二次製品を３〜６時間、室温で放置し、ある程度の
凝結を進ませる前養生を行なう。In the conventional curing method, first, the molded uncured secondary cement product is left for 3 to 6 hours at room temperature to carry out pre-curing to promote a certain degree of setting.
前養生を終了したセメント二次製品は、扉のない開放さ
れた養生棚に収納して養生室に入れ、この養生棚を密閉
する。The cement secondary product that has undergone pre-curing is stored in an open curing shelf without a door, placed in a curing room, and the curing shelf is sealed.
密閉した養生室には高温の水蒸気を噴出させて、被養生
製品の凝結硬化に必要な水分と温度とを同時に供給す
る。水蒸気によって供給される熱によって、養生室内の
空気は暖められつつこの養生室内を対流するが、養生室
内の温度が一定温度に達した後は、高温蒸気の供給を断
続させる事により、この一定温度を維持する。これらの
温度上昇期間と最高温度維持期間とに、セメント二次製
品は水和反応を行なって凝結硬化する。High-temperature steam is jetted into the hermetically sealed curing chamber to simultaneously supply the moisture and temperature required for setting and hardening the cured product. The heat supplied by the steam causes the air in the curing chamber to convection in the curing chamber while being warmed, but after the temperature in the curing chamber reaches a certain temperature, the high temperature steam is intermittently supplied to keep the temperature constant. To maintain. During these temperature rising period and maximum temperature maintaining period, the secondary cement product undergoes a hydration reaction to set and harden.
一定時間の養生を行なってセメント二次製品が硬化した
ならば、養生室内の温度を降下させてセメント二次製品
を冷却し、養生作業を終了する。When the cement secondary product is hardened by curing for a certain period of time, the temperature in the curing chamber is lowered to cool the cement secondary product, and the curing work is completed.
（発明が解決しようとする問題点） しかしながら、上述した従来の養生方法には以下に述べ
る様な不都合があった。(Problems to be Solved by the Invention) However, the conventional curing method described above has the following inconveniences.
即ち、高温の水蒸気の噴出によって養生室内は加温さ
れ、暖められた空気はこの養生室内で対流を始めるが、
この空気対流によって、被養生物であるセメント二次製
品の内部に含まれていた水分が水和反応に用いられる事
なくセメント二次製品の表面に浸出し、水滴となってセ
メント二次製品の表面に付着し、この二次製品の表面に
結露を造る。又、噴出される水蒸気は養生室内に滞溜す
るが、養生作業の終期に於いて、セメント二次製品を冷
却するために養生室内の温度を降下させる際に、飽和量
を越えた水蒸気分は上記セメント二次製品の表面に水滴
となって付着する。That is, the inside of the curing chamber is heated by the jet of high-temperature steam, and the warmed air starts convection in this curing chamber.
Due to this air convection, the water contained in the cement secondary product, which is the organism to be infused, is leached onto the surface of the cement secondary product without being used for the hydration reaction, and becomes a water drop to form a water drop in the cement secondary product. Adheres to the surface and creates condensation on the surface of this secondary product. Also, the steam that is ejected stays in the curing chamber, but at the end of the curing work, when the temperature inside the curing chamber is lowered to cool the cement secondary product, the steam content that exceeds the saturation amount is Water drops adhere to the surface of the cement secondary product.
このようにしてセメント二次製品の表面に生じた結露
は、このセメント二次製品中に含まれる酸化カルシウム
と反応し、水酸化カルシウムの結晶、即ちエフロを発生
させる。このようにして発生したエフロは、セメント二
次製品の外観を悪くし、製品の耐久性を低下させるだけ
でなく、スラリ塗装をしたセメント二次製品において
は、表面塗装の剥離、変色等の悪影響を及ぼす為、小規
模工場に於けるスラリ塗装の実用化を困難にしていた。The dew condensation thus generated on the surface of the secondary cement product reacts with the calcium oxide contained in the secondary cement product to generate calcium hydroxide crystals, that is, efuro. Efuro thus generated not only deteriorates the appearance of the cement secondary product and reduces the durability of the product, but it also adversely affects the peeling and discoloration of the surface coating in the slurry-coated cement secondary product. Therefore, it was difficult to put the slurry coating into practical use in a small factory.
本発明のセメント二次製品の養生方法は、上述のような
不都合を解消するものである。The method for curing a cement secondary product of the present invention eliminates the above-mentioned inconvenience.
b. 発明の構成 （問題解決のための手段） 本発明のセメント二次製品の養生方法に於いては、まず
成型直後の未硬化のセメント二次製品を、密閉可能とし
た養生棚に収納する。b. Structure of the Invention (Means for Solving Problems) In the method for curing a cement secondary product of the present invention, first, an uncured cement secondary product immediately after molding is stored in a sealable curing shelf. .
セメント二次製品を養生棚に収納したならばこの養生棚
を密閉する事により上記セメント二次製品を外気と遮断
し、更にこの養生棚を養生室に入れる。When the cement secondary product is stored in the curing shelf, the curing shelf is closed to block the cement secondary product from the outside air, and the curing shelf is placed in the curing room.
その後この養生室を密閉し、常温のまま３〜６時間の前
養生を行なった後、この養生室を加温する。After that, the curing chamber is hermetically closed, pre-curing is performed for 3 to 6 hours at room temperature, and then the curing chamber is heated.
この加温の際、養生室内への水蒸気供給は行なわず、養
生室内の温度が養生終了まで平衡状態となったり、下降
したりする事なく徐々に上昇する様に加温する。但し、
養生室内の温度は70℃を超えないように、加温時の温度
勾配を定める。During this heating, the steam is not supplied into the curing chamber, and the temperature in the curing chamber is gradually increased without reaching an equilibrium state or decreasing until the curing is completed. However,
Set the temperature gradient during heating so that the temperature inside the curing room does not exceed 70 ℃.
この加温により、養生室内には空気の対流が生じるが、
セメント二次製品は養生棚の内側に密閉されており、直
接対流空気に触れる事はないので、水和反応に要する水
分がこの対流空気により運び去られ、セメント二次製品
の内部に存在する水分がこの二次製品の表面に浸出し、
二次製品内部の水分が不足する事はない。このため、外
部から水分を供給しなくともセメント二次製品は、自身
の内部に含まれる水分だけで水和反応を行ない、硬化す
る。Due to this heating, air convection occurs in the curing chamber,
Since the cement secondary product is sealed inside the curing shelf and does not come into direct contact with convection air, the moisture required for the hydration reaction is carried away by this convection air, and the moisture present inside the cement secondary product is removed. Leaches onto the surface of this secondary product,
There is no shortage of water inside the secondary product. Therefore, the secondary cement product is hardened by performing a hydration reaction only with the moisture contained in itself without supplying moisture from the outside.
養生室内を徐々に加温する事による養生作業を終了した
ならば、この養生作業によって昇温したセメント二次製
品を冷却するが、この冷却は養生室の外で養生棚の扉を
開放することにより行なう。When the curing work by gradually heating the curing chamber is completed, the cement secondary product whose temperature has been raised by this curing work is cooled, but this cooling is done by opening the door of the curing shelf outside the curing chamber. By.
次に、本発明の養生方法を実施する場合に使用する養生
棚の１例に就いて説明する。Next, an example of a curing shelf used when carrying out the curing method of the present invention will be described.
第１〜４図は養生棚の１例を示しており、第１図は平面
図、第２図は正面図、第３図は側面図、第４図はこの養
生棚に被せるカバーの斜視図である。1 to 4 show one example of a curing shelf, FIG. 1 is a plan view, FIG. 2 is a front view, FIG. 3 is a side view, and FIG. 4 is a perspective view of a cover put on this curing shelf. Is.
それぞれ４本のアングル材を長矩形に組み合わせ、内側
に補強用の棧１、１を掛け渡した上枠２と下枠３との間
には、互いに平行な８本の支柱４、４を掛け渡してい
る。各支柱の側面で互いに対向する部分には、断面Ｌ字
形のアングル材５、５を溶接固定して、生瓦６、６等の
セメント二次製品を支持する為の支持部を構成してい
る。Eight parallel columns 4 and 4 are hung between the upper frame 2 and the lower frame 3 in which four angle members are combined into a long rectangle and the reinforcing ties 1 and 1 are laid inside. I am passing. Angle members 5 and 5 having an L-shaped cross section are welded and fixed to portions of the side faces of the columns facing each other to form a support portion for supporting a secondary cement product such as green roof tiles 6 and 6. .
更に、前記下枠２の下面四隅部分には支持板７、７を溶
接固定し、この支持板７、７の下面にキャスタ８、８を
固定して、養生棚の移動を軽い力で行なえる様にしてい
る。Further, support plates 7 and 7 are welded and fixed to the four corners of the lower surface of the lower frame 2, and casters 8 and 8 are fixed to the lower surfaces of the support plates 7 and 7 so that the curing shelf can be moved with a light force. I am doing it.
この様な養生棚の上下両面、及び四周面は、ビニール等
によって第４図に示す様に構成されたカバー９を被着自
在としている。このカバー９は、上記養生棚の上下両面
と左右両側面とを囲む事の出来る四角筒状部分10の両端
開口部に、観音開き式の扉11、11を設けたもので、この
扉11、11を開放する事で養生棚内のセメント二次製品が
出し入れ自在となり、同じく扉11、11を閉鎖する事で養
生棚の内側と外気とを遮断出来る様にしている。A cover 9 configured as shown in FIG. 4 is made of vinyl or the like and can be attached to the upper and lower surfaces of the curing shelf and the four peripheral surfaces thereof. This cover 9 is provided with double doors 11 and 11 at the opening of both ends of a square tubular portion 10 capable of enclosing the upper and lower surfaces and the left and right side surfaces of the curing shelf. By opening the, the secondary cement product in the curing shelf can be freely taken in and out, and by closing the doors 11 and 11, the inside of the curing shelf and the outside air can be shut off.
この様な養生棚を使用する事により、前述した本発明に
係るセメント二次製品の養生方法を容易に実施出来る様
になる。By using such a curing shelf, the above-described method for curing a cement secondary product according to the present invention can be easily carried out.
c. 発明の効果 本発明のセメント二次製品の養生方法は、以上に述べた
通り構成されるので、未硬化のセメント二次製品の表面
にエフロが発生するのを防止でき、エフロによってセメ
ント二次製品の外観を悪化されたり耐久性を低下させら
れたりする事を防止できる。又、スラリ塗装をしたセメ
ント二次製品の表面塗装の剥離、変色等の悪影響もな
く、小規模工場に於いてスラリ塗装を実用化する事も可
能となる。c. Effect of the Invention Since the method for curing a cement secondary product of the present invention is configured as described above, it is possible to prevent the generation of efulo on the surface of the uncured cement secondary product, and to prevent the cement secondary product by efulo. It is possible to prevent the appearance of the next product from being deteriorated and the durability from being deteriorated. Further, there is no adverse effect such as peeling or discoloration of the surface coating of the cement-coated secondary product coated with slurry, and it becomes possible to put the slurry coating into practical use in a small-scale factory.
【図面の簡単な説明】 第１図は本発明の方法を実施する場合に使用される養生
棚の１例を示す平面図、第２図は同じく正面図、第３図
は同じく側面図、第４図はこの養生棚に被せるカバーの
斜視図である。 1:棧、2:上枠、3:下枠、4:支柱、5:アングル材、6:生
瓦、7:支持板、8:キャスタ、9:カバー、10:四角筒状部
分、11:扉。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing an example of a curing shelf used for carrying out the method of the present invention, FIG. 2 is the same front view, FIG. 3 is the same side view, FIG. 4 is a perspective view of a cover placed on the curing shelf. 1: Cascade, 2: Upper frame, 3: Lower frame, 4: Strut, 5: Angle material, 6: Raw tile, 7: Support plate, 8: Casters, 9: Cover, 10: Square tubular part, 11: door.
Claims (1)
した養生棚に収納し、この養生棚を密閉した状態で、養
生棚ごと上記セメント二次製品を養生室に収納した後こ
の養生室を密閉し、常温のままで３〜６時間の前養生を
行なった後、６〜12時間かけてこの養生室内を最高温度
70℃以下の養生温度に、途中で養生室内の温度を降下或
は平衡させる事なく連続的に昇温させ、その後上記養生
棚を養生室の外に出してこの養生棚を開放し、この養生
棚の内部に収納されたセメント二次製品を冷却するセメ
ント二次製品の養生方法。1. An uncured cement secondary product is stored in a sealable curing shelf, and the cement secondary product is stored together with the curing shelf in a curing chamber after the curing shelf is sealed. After the chamber is closed and pre-cured at room temperature for 3 to 6 hours, the maximum temperature in this curing room is 6 to 12 hours.
A curing temperature of 70 ° C or less is continuously raised without lowering or equilibrating the temperature in the curing chamber on the way, and then the curing shelf is taken out of the curing chamber to open the curing shelf, A method of curing a cement secondary product, which cools the cement secondary product stored inside a shelf.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12124586A JPH0764656B2 (en) | 1986-05-28 | 1986-05-28 | Curing method for secondary cement products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12124586A JPH0764656B2 (en) | 1986-05-28 | 1986-05-28 | Curing method for secondary cement products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62278180A JPS62278180A (en) | 1987-12-03 |
| JPH0764656B2 true JPH0764656B2 (en) | 1995-07-12 |
Family
ID=14806491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12124586A Expired - Fee Related JPH0764656B2 (en) | 1986-05-28 | 1986-05-28 | Curing method for secondary cement products |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0764656B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5315188B2 (en) * | 2009-09-24 | 2013-10-16 | 株式会社桂機械製作所 | Manufacturing method of concrete products |
-
1986
- 1986-05-28 JP JP12124586A patent/JPH0764656B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62278180A (en) | 1987-12-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |