JPH10218656A - Heat-curable cement composition, method for producing molded article, and building board - Google Patents
Heat-curable cement composition, method for producing molded article, and building boardInfo
- Publication number
- JPH10218656A JPH10218656A JP2128797A JP2128797A JPH10218656A JP H10218656 A JPH10218656 A JP H10218656A JP 2128797 A JP2128797 A JP 2128797A JP 2128797 A JP2128797 A JP 2128797A JP H10218656 A JPH10218656 A JP H10218656A
- Authority
- JP
- Japan
- Prior art keywords
- cement composition
- weight
- parts
- heat
- curable
- 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.)
- Withdrawn
Links
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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Panels For Use In Building Construction (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
(57)【要約】
【課題】 吸水伸び率が小さく、短時間の加熱で硬化す
る加熱硬化型セメント組成物、この加熱硬化型セメント
組成物を使用して成形体を製造する成形体の製造方法及
びこの成形体の製造方法で製造した建築用板を提供す
る。
【解決手段】 ポルトランドセメント５０〜９６重量
部、アルミナセメント２．０〜２５重量部、無水石膏又
は／及び半水石膏１．５〜１５重量部、消石灰０〜１０
重量部からなるセメント組成物１００重量部に対して有
機カルボン酸のアルカリ金属塩０．２〜２．０重量部を
添加した加熱硬化型セメント組成物において、前記セメ
ント組成物の一部を高炉スラグに置換した加熱硬化型セ
メント組成物。PROBLEM TO BE SOLVED: To provide a thermosetting cement composition which has a low water absorption elongation and is cured by heating for a short time, and a method for producing a molded article using the thermosetting cement composition. And a building plate manufactured by the method for manufacturing a molded article. SOLUTION: Portland cement 50-96 parts by weight, alumina cement 2.0-25 parts by weight, anhydrous gypsum or / and hemihydrate gypsum 1.5-15 parts by weight, slaked lime 0-10
In a heat-curable cement composition obtained by adding 0.2 to 2.0 parts by weight of an alkali metal salt of an organic carboxylic acid to 100 parts by weight of a cement composition consisting of parts by weight, a part of the cement composition is blast furnace slag. A heat-curable cement composition substituted with:
Description
【０００１】[0001]
【発明の属する技術分野】本発明は加熱して硬化させる
加熱硬化型セメント組成物とこの加熱硬化型セメント組
成物を使用して成形体を製造する成形体の製造方法に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-curable cement composition which is cured by heating and a method for producing a molded article using the heat-curable cement composition.
【０００２】[0002]
【従来の技術】従来、加熱硬化型セメント組成物と木質
補強材と水とからなる混合物を所定形状に成形するとと
もに加熱して成形体を得る方法は、特公昭５９−１８３
３９号公報（以下従来例１と称する）に記載されている
ように、知られている。2. Description of the Related Art Conventionally, a method of forming a mixture comprising a heat-curable cement composition, a wood reinforcing material and water into a predetermined shape and heating the mixture to obtain a formed body is disclosed in Japanese Patent Publication No. 59-183.
It is known as described in Japanese Patent Publication No. 39 (hereinafter referred to as Conventional Example 1).
【０００３】このとき使用される加熱硬化型セメント組
成物は、ポルトランドセメント、アルミナセメントおよ
び無水石膏又は半水石膏からなるものである。又、特開
願６−２７１３４５号公報（以下従来例２と称する）に
は、ポルトランドセメント等のセメントと高炉スラグと
石膏からなるセメント組成物を使用し、このセメント組
成物と木質補強材と水とからなる混合物を熱プレスで加
圧した状態で加熱して板状に成形する木質セメント板の
製造方法が記載されている。[0003] The heat-curable cement composition used at this time is composed of Portland cement, alumina cement and anhydrous gypsum or gypsum hemihydrate. In Japanese Patent Application Laid-Open No. 6-271345 (hereinafter referred to as Conventional Example 2), a cement composition including cement such as Portland cement, blast furnace slag, and gypsum is used. A method for producing a wood cement board in which a mixture consisting of the following is heated while being pressed by a hot press and formed into a plate shape.
【０００４】[0004]
【発明が解決しようとする課題】しかし、前記従来例１
記載の方法で成形体を製造すると、成形体の吸水伸び率
が大きく、従って、この成形体を使用していると問題が
生ずることがある。例えば、この加熱硬化型セメント組
成物と木片と水との混合物で外壁板を製造し、これを建
物に取り付けていると、外壁板が雨等により水を吸収し
て反りが発生したり、部分的に膨れたりすることがあ
り、これを解決するために塗装を施す必要があり不便で
あった。However, the above conventional example 1
When a molded article is manufactured by the method described, the water absorption elongation of the molded article is large, and therefore, a problem may occur when this molded article is used. For example, when an outer wall plate is manufactured from a mixture of the heat-curable cement composition, a piece of wood and water, and attached to a building, the outer wall plate absorbs water due to rain or the like, causing warpage, or Swelling may occur, and it is inconvenient to apply a coating to solve the problem.
【０００５】又、従来例２記載の木質セメント板の製造
方法では、熱プレスで加圧した状態で加熱する時間が、
例えば、１２時間というように、極めて長時間加圧し加
熱する必要があり、生産性が悪かった。又、長時間加熱
していると硬化するまでに木の種類によっては木からセ
メントの硬化を妨害する成分が溶出して十分硬化せず、
その結果、木質セメント板の強度が小さく取り扱ってい
るときや使用しているときに割れ易いという問題があ
る。[0005] In the method for manufacturing a wood cement board described in Conventional Example 2, the time required for heating while pressing with a hot press is as follows.
For example, it was necessary to heat and pressurize for an extremely long time, for example, 12 hours, and the productivity was poor. Also, depending on the type of wood, components that hinder the hardening of cement elute from the wood and do not harden sufficiently until it hardens when heated for a long time,
As a result, there is a problem that the strength of the wood cement board is small, and the wood cement board is easily broken when it is handled or used.
【０００６】そこで、本発明の目的は、吸水伸び率が小
さく、短時間の加熱で硬化する加熱硬化型セメント組成
物とこの加熱硬化型セメント組成物を使用して成形体を
製造する成形体の製造方法を提供することである。Accordingly, an object of the present invention is to provide a heat-curable cement composition which has a low water absorption elongation rate and is cured by heating for a short time, and a molded article produced by using the heat-curable cement composition. It is to provide a manufacturing method.
【０００７】[0007]
【課題を解決するための手段】本発明は上記目的を達成
するためになしたものであって、請求項１記載の発明
は、ポルトランドセメント５０〜９６重量部、アルミナ
セメント２．０〜２５重量部、無水石膏又は／及び半水
石膏１．５〜１５重量部、消石灰０〜１０重量部からな
るセメント組成物１００重量部に対して、有機カルボン
酸のアルカリ金属塩０．２〜２．０重量部を添加した加
熱硬化型セメント組成物において、前記センメト組成物
の一部が高炉スラグに置換されているものである。SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, and the invention according to claim 1 is characterized in that 50 to 96 parts by weight of Portland cement and 2.0 to 25 parts by weight of alumina cement. Parts, anhydrous gypsum or / and hemihydrate gypsum 1.5 to 15 parts by weight, 100 parts by weight of a cement composition comprising 0 to 10 parts by weight of slaked lime, 0.2 to 2.0 parts of an alkali metal salt of an organic carboxylic acid In the heat-curable cement composition to which parts by weight are added, a part of the cemet composition is replaced with blast furnace slag.
【０００８】請求項２記載の発明は、請求項１記載の発
明において、セメント組成物が高炉スラグに置換される
割合がセメント組成物：高炉スラグ＝１：０．２〜１：
１であるものである。According to a second aspect of the present invention, in the first aspect of the present invention, the ratio of the cement composition replaced by the blast furnace slag is: cement composition: blast furnace slag = 1: 0.2 to 1:
It is one that is 1.
【０００９】請求項３記載の発明は、請求項１または２
記載の発明に使用される高炉スラグが比表面積４０００
ｃｍ2 ／ｇ以上であるものである。The invention described in claim 3 is the first or second invention.
The blast furnace slag used in the described invention has a specific surface area of 4000.
cm 2 / g or more.
【００１０】請求項４記載の発明は、請求項１、２また
は３記載の発明に使用される有機カルボン酸のアルカリ
金属塩がクエン酸、リンゴ酸、グルコン酸、グルタール
酸、グリコール酸から選ばれた１以上の有機カルボン酸
のナトリウム塩またはカリウム塩であるものである。According to a fourth aspect of the present invention, the alkali metal salt of an organic carboxylic acid used in the first, second or third aspect of the invention is selected from citric acid, malic acid, gluconic acid, glutaric acid and glycolic acid. And sodium or potassium salts of one or more organic carboxylic acids.
【００１１】請求項５記載の発明は、請求項１、２、３
または４記載の加熱硬化型セメント組成物と木質補強材
と水とからなる混合物を熱プレスで加圧した状態で加熱
して成形するものである。請求項６記載の発明は、請求
項５記載の成形体の製造方法で製造した板体である。[0011] The invention according to claim 5 is the invention according to claims 1, 2, and 3.
Alternatively, a mixture comprising the heat-curable cement composition, the wood reinforcing material, and water according to 4 is heated and molded under pressure by a hot press. According to a sixth aspect of the present invention, there is provided a plate manufactured by the method for manufacturing a molded body according to the fifth aspect.
【００１２】本発明に使用されるポルトランドセメント
としては種々なものがある。例えば、普通ポルトランド
セメント、早強ポルトランドセメント、超早強ポルトラ
ンドセメント、白色ポルトランドセメントが使用でき
る。このポルトランドセメントを５０〜９６重量部にす
る理由は、ポルトランドセメントの量が５０重量部未満
では経済的に高価になるだけでなく、硬化後の耐久物
性、例えば、５０℃以上の高温での乾燥収縮が大きくな
り、良好な成形体が得られないからである。又、９６重
量部を超えると早期強度が不足し、成形に長時間必要に
なるし、木の種類によっては、木から硬化を妨害する成
分が溶出して最終強度も不足するようになるからであ
る。There are various Portland cements used in the present invention. For example, ordinary Portland cement, early-strength Portland cement, ultra-high-strength Portland cement, and white Portland cement can be used. The reason for using 50 to 96 parts by weight of the Portland cement is that if the amount of the Portland cement is less than 50 parts by weight, not only is it economically expensive, but also the durability after curing, such as drying at a high temperature of 50 ° C. or higher. This is because shrinkage increases and a good molded body cannot be obtained. On the other hand, if it exceeds 96 parts by weight, the early strength is insufficient, and it takes a long time for molding, and depending on the type of tree, components that hinder hardening are eluted from the tree and the final strength is also insufficient. is there.
【００１３】本発明に使用されるアルミナセメントと無
水石膏又は半水石膏はポルトランドセメントの硬化を促
進するものである。従って、このアルミナセメントと無
水石膏又はアルミナセメントと半水石膏の両者を加える
ことによって、例えば、１０分というように短時間の加
熱で硬化するようになるのである。尚、無水石膏と半水
石膏を併用してもよい。The alumina cement and anhydrous gypsum or hemihydrate gypsum used in the present invention accelerate the hardening of Portland cement. Therefore, by adding both the alumina cement and the anhydrous gypsum or the alumina cement and the hemihydrate gypsum, the composition can be hardened by heating for a short time such as 10 minutes. Incidentally, anhydrous gypsum and hemihydrate gypsum may be used in combination.
【００１４】ポルトランドセメント５０〜９６重量部に
対して、このアルミナセメント２．０〜２５重量部、無
水石膏又は／及び半水石膏を１．５〜１５重量部にする
理由は、アルミナセメントが２５重量部、無水石膏又は
／及び半水石膏が１５重量部を超えると硬化に支障が出
て寸法安定性が劣るようになるし、アルミナセメントが
２．０重量部、無水石膏又は／及び半水石膏が１．５重
量部未満ではポルトランドセメントやアルミナセメント
の硬化を促進する作用が少なくなるからである。更に必
要に応じて消石灰を１０重量部以下、更に好ましくは５
重量部以下を加えてもよい。The reason why 2.0 to 25 parts by weight of the alumina cement and 1.5 to 15 parts by weight of the anhydrous gypsum or the gypsum hemihydrate is based on 50 to 96 parts by weight of the Portland cement, If the weight part, anhydrous gypsum or / and / or hemihydrate gypsum exceeds 15 parts by weight, curing will be hindered and the dimensional stability will be poor, and the alumina cement will be 2.0 parts by weight, anhydrous gypsum // and / or hemihydrate If the amount of gypsum is less than 1.5 parts by weight, the effect of promoting hardening of Portland cement or alumina cement is reduced. If necessary, add slaked lime to 10 parts by weight or less, more preferably 5 parts by weight.
Parts by weight or less may be added.
【００１５】本発明に使用する有機カルボン酸のアルカ
リ金属塩は、セメント組成物の常温での硬化開始時間を
延長させて可使用時間を長くし取り扱いし易くすると同
時に加熱すると速く硬化して得られた成形体の機械的強
度を向上させるものである。この有機カルボン酸のアル
カリ塩としては種々使用できるが、請求項４記載の発明
に使用されるクエン酸、リンゴ酸、グルコン酸、グルタ
ール酸、グリコール酸から選ばれた１以上の有機カルボ
ン酸のナトリウム塩またはカリウム塩が好適である。The alkali metal salt of an organic carboxylic acid used in the present invention can be obtained by elongating the onset time of the cement composition at room temperature to lengthen the usable time and making it easier to handle, and at the same time, to cure quickly when heated. The purpose is to improve the mechanical strength of the formed body. The alkali salt of this organic carboxylic acid can be variously used, but sodium of one or more organic carboxylic acids selected from citric acid, malic acid, gluconic acid, glutaric acid and glycolic acid used in the invention according to claim 4 Salts or potassium salts are preferred.
【００１６】セメント組成物１００重量部に対して、こ
の有機カルボン酸のアルカリ金属塩を０．２〜２．０重
量部添加する理由は、０．２重量部より少ないと効果が
少ないし、２．０重量部を超えると加熱しても硬化し難
くなるからである。The reason for adding 0.2 to 2.0 parts by weight of the alkali metal salt of the organic carboxylic acid to 100 parts by weight of the cement composition is that if the amount is less than 0.2 part by weight, the effect is small. If the amount exceeds 0.0 parts by weight, curing becomes difficult even when heated.
【００１７】本発明では、セメント組成物の一部が高炉
スラグに置換されているが、この高炉スラグを置換する
理由は、セメント組成物で製造した成形物の吸水伸び率
を小さくするものである。この高炉スラグとしては適宜
大きさの粉末が使用できるが、粒子が小さいほど、即
ち、比表面積が大きいほど吸水伸び率が小さくなり曲げ
強度が大きくなるので好ましい。かかる意味において、
請求項３記載のように、比表面積が４０００ｃｍ2 ／ｇ
以上の微粉末が好適である。In the present invention, a part of the cement composition is replaced by blast furnace slag. The reason for replacing the blast furnace slag is to reduce the water absorption elongation of a molded product produced from the cement composition. . As the blast furnace slag, powder having an appropriate size can be used. However, the smaller the particles, that is, the larger the specific surface area, the smaller the water absorption elongation rate and the greater the bending strength. In this sense,
As described in claim 3, the specific surface area is 4000 cm 2 / g.
The above fine powder is suitable.
【００１８】又、この高炉スラグの置換割合は適宜でよ
いが、請求項２記載のように、セメント組成物：高炉ス
ラグ＝１：０．２〜１：１が好適である。その理由は、
０．２未満では効果が少なく、１を超えると硬化した成
形体の曲げ強度等の機械的強度が小さくなるからであ
る。The replacement ratio of the blast furnace slag may be arbitrary, but as described in claim 2, a cement composition: blast furnace slag = 1: 0.2 to 1: 1 is preferable. The reason is,
If it is less than 0.2, the effect is small, and if it exceeds 1, the mechanical strength such as the bending strength of the cured molded article becomes small.
【００１９】請求項５記載に使用される木質補強材とし
ては、各種木材が使用できる。各種木材の木片、木粉、
木毛等で繊維方向に長く細片化されたものが、成形され
た成形体の機械的強度が大きく好ましい。この木質補強
材としては、例えば、従来使用されていた米栂、エゾ
松、赤松、カラワン、ブナ等は勿論のこと、従来、セメ
ントの硬化を妨害する成分を含むとされていた杉、カラ
マツ、メラビ等も使用できる。この木質補強材の使用量
は適宜でよいが、セメント組成物７０〜９５重量部に対
して５〜３０重量部が好適である。Various types of wood can be used as the wood reinforcing material used in the present invention. Wood chips, wood flour,
It is preferable to use a piece formed of wood wool or the like that is long and thin in the fiber direction because the formed article has high mechanical strength. Examples of the wood reinforcing material include cedar, larch, and merabi, which are conventionally used to contain components that hinder the hardening of cement, as well as Yonega, Ezomatsu, Akamatsu, Karawang, and Beech, which have been conventionally used. Etc. can also be used. The amount of the wood reinforcing material used may be arbitrary, but is preferably 5 to 30 parts by weight based on 70 to 95 parts by weight of the cement composition.
【００２０】請求項５記載の発明では、加熱硬化型セメ
ント組成物と木質補強材と水とからなる混合物を熱プレ
スで加圧した状態で加熱するが、この際使用される加圧
は２０〜５０ｋｇ／ｃｍ2 が好適である。又、加熱する
温度は高い方が硬化時間が短くなり生産性が上がり好ま
しいが、余り高くすると得られる成形体の長期強度が低
くなるので６０〜９０℃が適当である。According to the fifth aspect of the present invention, the mixture comprising the heat-curable cement composition, the wood reinforcing material, and water is heated while being pressed by a hot press. 50 kg / cm 2 is preferred. The higher the heating temperature, the shorter the curing time and the higher the productivity. The higher the heating temperature, the lower the long-term strength of the obtained molded product.
【００２１】（作用）請求項１記載の発明では、ポルト
ランドセメント５０〜９６重量部、アルミナセメント
２．０〜２５重量部、無水石膏又は／及び半水石膏１．
５〜１５重量部、消石灰０〜１０重量部からなるセメン
ト組成物１００重量部に対して、有機カルボン酸のアル
カリ金属塩０．２〜２．０重量部を添加した加熱硬化型
セメント組成物を使用するから、この加熱硬化型セメン
ト組成物は短時間の加熱で硬化して良好な成形物が得ら
れる。(Function) In the invention of claim 1, 50 to 96 parts by weight of Portland cement, 2.0 to 25 parts by weight of alumina cement, anhydrous gypsum or / and hemihydrate gypsum.
5 to 15 parts by weight, 100 parts by weight of the cement composition consisting of 0 to 10 parts by weight of slaked lime, 0.2 to 2.0 parts by weight of an alkali metal salt of an organic carboxylic acid is added to the heat-curable cement composition. Since it is used, this heat-curable cement composition can be cured by heating for a short time to obtain a good molded product.
【００２２】又、請求項１記載の発明では、前記加熱硬
化型センメト組成物の一部が高炉スラグに置換されてい
るから、機械的強度が大きく、吸水伸び率の小さい良好
な成形体が得られる。According to the first aspect of the present invention, since a part of the heat-curable cemet composition is replaced by blast furnace slag, a good molded product having high mechanical strength and low water absorption elongation can be obtained. Can be
【００２３】請求項２記載の発明は、請求項１記載の発
明の中のセメント組成物として、高炉スラグに置換され
る割合がセメント組成物：高炉スラグ＝１：０．２〜
１：１という最も良好な範囲の組成物であるから、機械
的強度が大きく、吸水伸び率の小さい極めて良好な成形
体が得られる。According to a second aspect of the present invention, the cement composition according to the first aspect of the present invention is characterized in that the ratio of the cement composition to the blast furnace slag: cement composition: blast furnace slag = 1: 0.2 to
Since the composition is in the best range of 1: 1, a very good molded product having high mechanical strength and low water absorption elongation can be obtained.
【００２４】請求項３記載の発明では、請求項１または
２記載の発明に使用される高炉スラグが比表面積４００
０ｃｍ2 ／ｇ以上であるから、高炉スラグが水と反応し
易く、従って、高炉スラグを置換した効果が大きく、吸
水伸び率の小さい良好な成形体が得られる。According to the third aspect of the present invention, the blast furnace slag used in the first or second aspect of the present invention has a specific surface area of 400.
Since the blast furnace slag is 0 cm 2 / g or more, the blast furnace slag easily reacts with water. Therefore, the effect of replacing the blast furnace slag is large, and a good molded product having a small water absorption elongation can be obtained.
【００２５】請求項４記載の発明は、請求項１、２また
は３記載の発明に使用される有機カルボン酸のアルカリ
金属塩がクエン酸、リンゴ酸、グルコン酸、グルタール
酸、グリコール酸から選ばれた１以上の有機カルボン酸
のナトリウム塩またはカリウム塩という最も良好なアル
カリ金属塩を使用するから、加熱硬化型セメント組成物
の常温での硬化開始時間が延長されて可使用時間を長く
なり、取り扱いし易くすると同時に加熱すると速く硬化
して得られた成形体の機械的強度が向上する効果が大き
い。According to a fourth aspect of the present invention, the alkali metal salt of an organic carboxylic acid used in the first, second or third aspect of the invention is selected from citric acid, malic acid, gluconic acid, glutaric acid and glycolic acid. In addition, since the best alkali metal salt of one or more organic carboxylic acids, that is, a sodium salt or a potassium salt, is used, the curing start time of the heat-curable cement composition at room temperature is prolonged, and the usable time is prolonged. At the same time, the effect of increasing the mechanical strength of the molded article obtained by curing quickly when heated is great.
【００２６】請求項５記載の発明では、請求項１、２、
３または４記載の加熱硬化型セメント組成物と木質補強
材と水とからなる混合物を熱プレスで加圧した状態で加
熱して成形するから、加熱硬化型セメント組成物と水と
が加熱により速く硬化すると同時に、加圧により加熱硬
化型セメント組成物と木片と強固に結合して、吸水伸び
率が小さく機械的強度の大きい良好な成形体が得られ
る。According to the fifth aspect of the present invention, the first, second,
Since the mixture comprising the heat-curable cement composition described in 3 or 4 above, the wood reinforcing material, and water is heated and molded in a state of being pressed by a hot press, the heat-curable cement composition and water are heated more quickly. At the same time as curing, the heat-curable cement composition and the wood chips are firmly bonded to each other by applying pressure, and a good molded body having a small water absorption elongation and a large mechanical strength can be obtained.
【００２７】請求項６記載の発明は、請求項５記載の成
形体の製造方法で製造した板体であるから、吸水伸び率
が小さく、機械的強度の大きな良好な建築用板である。The invention according to claim 6 is a good architectural plate having a small water absorption elongation and a large mechanical strength, since it is a plate manufactured by the method for manufacturing a molded body according to claim 5.
【００２８】[0028]
【発明の実施の形態】次に、本発明の実施例を説明す
る。図１は本発明の一実施例を示すもので、（イ）は成
形用型を示す説明図、（ロ）は成形用型に加熱硬化型セ
メント組成物と木質補強材と水とからなる混合物を入れ
た状態を示す説明図、（ハ）は加熱プレスで加圧した状
態で加熱している状態を示す説明図である。Next, embodiments of the present invention will be described. FIG. 1 shows an embodiment of the present invention, in which (a) is an explanatory view showing a molding die, and (b) is a mixture comprising a heat-curable cement composition, a wood reinforcing material and water in the molding die. (C) is an explanatory view showing a state in which heating is performed in a state where pressure is applied by a heating press.
【００２９】図１において、１は成形用型であり、この
成形用型１は、（イ）に示すように四角形の箱形の中に
２個の仕切り壁１１が設けられて、４ｃｍ×４ｃｍ×１
６ｃｍの窪み１２が３個設けられたものである。２は加
熱硬化型セメント組成物と木質補強材と水とからなる混
合物である。３はステンレス鋼板からなる加圧板であ
る。この成形用型１を使用して成形体の製造方法は、
（ロ）に示すように、型１の中に混合物２を挿入し、加
圧板３を上に載せ、プレス機で加圧板３を押さえて、３
０ｋｇ／ｃｍ2 に加圧して４ｃｍの高さにし、所定温度
に加熱して、加熱硬化型セメント組成物を硬化させた
後、脱型する。In FIG. 1, reference numeral 1 denotes a molding die. The molding die 1 is provided with two partition walls 11 in a rectangular box shape as shown in FIG. × 1
It is provided with three 6 cm dents 12. 2 is a mixture comprising a heat-curable cement composition, a wood reinforcing material and water. Reference numeral 3 denotes a pressing plate made of a stainless steel plate. The method for producing a molded article using the molding die 1 is as follows.
As shown in (b), the mixture 2 is inserted into the mold 1, and the pressing plate 3 is placed on the upper surface.
The pressure is increased to 0 kg / cm 2 to a height of 4 cm, and the mixture is heated to a predetermined temperature to harden the heat-curable cement composition, and then is released.
【００３０】次に、実施例と比較例を説明する。 （実施例、比較例１〜４）表１に示す割合にポルトラン
ドセメント、アルミナセメント、半水石膏、消石灰、高
炉セメントを混合し、これに水と木質材料を添加して十
分攪拌し、これを図に示す成形用型１の中に入れ、これ
を加熱プレスで３０ｋｇ／ｃｍ2 の圧力で加圧し、加圧
した状態のまま加熱室内に入れて加熱し、材料温度が８
０℃に達してから、この温度に１０分間保った後、脱型
して４ｃｍ×４ｃｍ×１６ｃｍの成形体を得た。この成
形体の曲げ強度および吸水伸び率を測定した結果を表１
に示す。尚、曲げ強度の測定はＪＩＳ−Ａ−１４０８に
より測定し、吸水伸び率の測定はＪＩＳ−Ａ−５４２２
により測定した。Next, examples and comparative examples will be described. (Examples, Comparative Examples 1 to 4) Portland cement, alumina cement, hemihydrate gypsum, slaked lime, blast furnace cement were mixed in the proportions shown in Table 1, water and wood material were added thereto, and the mixture was sufficiently stirred. It is put into a molding die 1 shown in the figure, and it is pressurized with a heating press at a pressure of 30 kg / cm 2 , and is put into a heating chamber while being pressurized, and heated.
After the temperature reached 0 ° C., the temperature was maintained at this temperature for 10 minutes, and the mold was removed to obtain a molded product of 4 cm × 4 cm × 16 cm. Table 1 shows the results of measuring the bending strength and the water absorption elongation of this molded product.
Shown in The bending strength was measured according to JIS-A-1408, and the water absorption elongation was measured according to JIS-A-5422.
Was measured by
【００３１】[0031]
【表１】 [Table 1]
【００３２】この表１から判明するように、セメント組
成物の一部を高炉スラグに置換した熱硬化型セメント組
成物は、比較例と実施例１とを比較して判るように、吸
水伸び率が小さく良好な成形体が得られる。又、高炉ス
ラグに置換される割合がセメント組成物１に対して高炉
スラグが１を越えると、実施例２と実施例１とを比較し
て判るように曲げ強度が小さく不十分である。又、セメ
ント組成物１に対して高炉スラグの割合が０．２未満で
は、実施例３と実施例１とを比較して判るように、吸水
伸び率が大きく不十分である。更に、高炉スラグの比表
面積が４００未満では、実施例４と実施例１とを比較し
て判るように、給水伸び率で大きく不十分である。As can be seen from Table 1, the thermosetting cement composition in which a part of the cement composition was replaced with blast furnace slag has a higher water absorption elongation as can be seen by comparing the comparative example with the example 1. And a good molded product is obtained. When the ratio of the blast furnace slag to the cement composition 1 exceeds 1 with respect to the cement composition 1, the bending strength is small and insufficient as can be seen by comparing Example 2 and Example 1. When the ratio of the blast furnace slag to the cement composition 1 is less than 0.2, as can be seen by comparing Example 3 with Example 1, the water absorption elongation is large and insufficient. Further, when the specific surface area of the blast furnace slag is less than 400, as can be seen by comparing Example 4 and Example 1, the water supply elongation rate is largely insufficient.
【００３３】実施例１に示す方法で９１０ｍｍ×２７３
０ｍｍ×厚み１５ｍｍの建築用板を製造し、これを外壁
に使用したところ、雨等が降って、水を吸収しても反り
や膨れが発生せず極めて良好であった。910 mm × 273 by the method shown in Embodiment 1.
When an architectural board of 0 mm × 15 mm in thickness was manufactured and used for the outer wall, it was extremely good without any warpage or swelling even when it rained and absorbed water.
【００３４】[0034]
【発明の効果】請求項１記載の発明では、前記加熱硬化
型センメト組成物の一部が高炉スラグに置換されている
から、機械的強度が大きく、吸水伸び率の小さい良好な
成形体が得られるょで、これを、例えば、外壁として使
用しても反りや膨れが生ぜず極めて価値ある発明であ
る。According to the first aspect of the present invention, since a part of the heat-curable cermet composition is replaced by blast furnace slag, a good molded product having high mechanical strength and low water absorption elongation can be obtained. Therefore, even if this is used as an outer wall, for example, it is an extremely valuable invention without warping or swelling.
【００３５】請求項２記載の発明は、請求項１記載の発
明の中のセメント組成物として、高炉スラグに置換され
る割合がセメント組成物：高炉スラグ＝１：０．２〜
１：１という最も良好な範囲の組成物であるから、機械
的強度が大きく、吸水伸び率の小さい極めて良好な成形
体が得られる。According to a second aspect of the present invention, the cement composition according to the first aspect of the present invention is characterized in that the ratio of the cement composition to the blast furnace slag is 1: 0.2 to blast furnace slag.
Since the composition is in the best range of 1: 1, a very good molded product having high mechanical strength and low water absorption elongation can be obtained.
【００３６】請求項３記載の発明では、請求項１または
２記載の発明に使用される高炉スラグが比表面積４００
０ｃｍ2 ／ｇ以上であるから、高炉スラグが水と反応し
易く、従って、高炉スラグを置換した効果が大きく、吸
水伸び率の小さい良好な成形体が得られる。According to the third aspect of the present invention, the blast furnace slag used in the first or second aspect of the present invention has a specific surface area of 400.
Since the blast furnace slag is 0 cm 2 / g or more, the blast furnace slag easily reacts with water. Therefore, the effect of replacing the blast furnace slag is large, and a good molded product having a small water absorption elongation can be obtained.
【００３７】請求項４記載の発明は、請求項１、２また
は３記載の発明に使用される有機カルボン酸のアルカリ
金属塩がクエン酸、リンゴ酸、グルコン酸、グルタール
酸、グリコール酸から選ばれた１以上の有機カルボン酸
のナトリウム塩またはカリウム塩という最も良好なアル
カリ金属塩を使用するから、加熱硬化型セメント組成物
の常温での硬化開始時間が延長されて可使用時間を長く
なり、取り扱いし易くすると同時に加熱すると速く硬化
して得られた成形体の機械的強度が向上する効果が大き
い。According to a fourth aspect of the present invention, the alkali metal salt of an organic carboxylic acid used in the first, second or third aspect of the invention is selected from citric acid, malic acid, gluconic acid, glutaric acid, and glycolic acid. In addition, since the best alkali metal salt of one or more organic carboxylic acids, that is, a sodium salt or a potassium salt, is used, the curing start time of the heat-curable cement composition at room temperature is prolonged, and the usable time is prolonged. At the same time, the effect of increasing the mechanical strength of the molded article obtained by curing quickly when heated is great.
【００３８】請求項５記載の発明では、請求項１、２、
３または４記載の加熱硬化型セメント組成物と木質補強
材と水とからなる混合物を熱プレスで加圧した状態で加
熱して成形するから、加熱硬化型セメント組成物と水と
が加熱により速く硬化すると同時に、加圧により加熱硬
化型セメント組成物と木片と強固に結合して機械的強度
の大きい良好な成形体が得られる。According to the fifth aspect of the present invention,
Since the mixture comprising the heat-curable cement composition described in 3 or 4 above, the wood reinforcing material, and water is heated and molded in a state of being pressed by a hot press, the heat-curable cement composition and water are heated more quickly. At the same time as hardening, the thermosetting cement composition and the wood chips are firmly bonded to each other by pressurization, so that a good molded body having high mechanical strength can be obtained.
【００３９】請求項６記載の発明は、請求項５記載の成
形体の製造方法で製造した板体であるから、吸水伸び率
が小さく、機械的強度の大きな良好な建築用板である。According to a sixth aspect of the present invention, since the plate is produced by the method for producing a molded body according to the fifth aspect, it is a good architectural plate having a low water absorption elongation and a large mechanical strength.
【図１】本発明の一実施例をを示すもので、（イ）は成
形用型を示す説明図、（ロ）は成形用型に加熱硬化型セ
メント組成物と木質補強材と水とからなる混合物を入れ
た状態を示す説明図、（ハ）は加熱プレスで加圧した状
態で加熱している状態を示す説明図を示す説明図であ
る。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention, in which (a) is an explanatory view showing a molding die, and (b) is formed from a heat-curable cement composition, a wood reinforcing material, and water. FIG. 3C is an explanatory diagram showing a state in which the mixture is placed, and FIG. 3C is an explanatory diagram showing an explanatory diagram showing a state in which the mixture is heated while being pressed by a heating press.
１ 成形用型 ２ 加熱硬化型セメント組成物 ３ 加圧板 DESCRIPTION OF SYMBOLS 1 Mold for molding 2 Heat hardening type cement composition 3 Press plate
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ //(Ｃ０４Ｂ 28/04 24:04） ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification symbol FI // (C04B 28/04 24:04)
Claims (6)
部、アルミナセメント２．０〜２５重量部、無水石膏又
は半水石膏１．５〜１５重量部、消石灰０〜１０重量部
からなるセメント組成物１００重量部に対して、有機カ
ルボン酸のアルカリ金属塩０．２〜２．０重量部を添加
した加熱硬化型セメント組成物において、前記センメト
組成物の一部が高炉スラグに置換されていることを特徴
とする加熱硬化型セメント組成物。1. A cement composition comprising 50 to 96 parts by weight of Portland cement, 2.0 to 25 parts by weight of alumina cement, 1.5 to 15 parts by weight of anhydrous gypsum or gypsum, and 0 to 10 parts by weight of slaked lime. Parts by weight, in a heat-curable cement composition to which 0.2 to 2.0 parts by weight of an alkali metal salt of an organic carboxylic acid is added, a part of the cemet composition is replaced with blast furnace slag. Heat-curable cement composition.
る割合がセメント組成物：高炉スラグ＝１：０．２〜
１：１であることを特徴とする請求項１記載の加熱硬化
型セメント組成物。2. The rate at which the cement composition is replaced with blast furnace slag is as follows: cement composition: blast furnace slag = 1: 0.2-
The heat-curable cement composition according to claim 1, wherein the ratio is 1: 1.
ｇ以上であることを特徴とする請求項１または２記載の
加熱硬化型セメント組成物。3. The blast furnace slag has a specific surface area of 4000 cm 2 /
The heat-curable cement composition according to claim 1 or 2, wherein the weight is at least g.
ン酸、リンゴ酸、グルコン酸、グルタール酸、グリコー
ル酸から選ばれた１以上の有機カルボン酸のナトリウム
塩またはカリウム塩であることを特徴とする請求項１、
２または３記載の加熱硬化型セメント組成物。4. The alkali metal salt of an organic carboxylic acid is a sodium salt or a potassium salt of one or more organic carboxylic acids selected from citric acid, malic acid, gluconic acid, glutaric acid, and glycolic acid. Claim 1,
4. The heat-curable cement composition according to 2 or 3.
化型セメント組成物と木質補強材と水とからなる混合物
を熱プレスで加圧した状態で加熱して成形することを特
徴とする成形体の製造方法。5. A mixture comprising the heat-curable cement composition according to claim 1, 2, 3 or 4, and a mixture comprising a wood reinforcing material and water, wherein the mixture is heated and molded under pressure by a hot press. Method for producing a molded article.
した板体であることを特徴とする建築用板。6. An architectural plate which is a plate manufactured by the method for manufacturing a molded body according to claim 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2128797A JPH10218656A (en) | 1997-02-04 | 1997-02-04 | Heat-curable cement composition, method for producing molded article, and building board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2128797A JPH10218656A (en) | 1997-02-04 | 1997-02-04 | Heat-curable cement composition, method for producing molded article, and building board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10218656A true JPH10218656A (en) | 1998-08-18 |
Family
ID=12050929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2128797A Withdrawn JPH10218656A (en) | 1997-02-04 | 1997-02-04 | Heat-curable cement composition, method for producing molded article, and building board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10218656A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100362087B1 (en) * | 1999-12-01 | 2002-11-23 | 한일시멘트 (주) | The method for manufacturing of composition of cement |
-
1997
- 1997-02-04 JP JP2128797A patent/JPH10218656A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100362087B1 (en) * | 1999-12-01 | 2002-11-23 | 한일시멘트 (주) | The method for manufacturing of composition of cement |
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