JPH09296525A - Surface preparation method of surface structure of cement building material - Google Patents

Surface preparation method of surface structure of cement building material

Info

Publication number
JPH09296525A
JPH09296525A JP13427696A JP13427696A JPH09296525A JP H09296525 A JPH09296525 A JP H09296525A JP 13427696 A JP13427696 A JP 13427696A JP 13427696 A JP13427696 A JP 13427696A JP H09296525 A JPH09296525 A JP H09296525A
Authority
JP
Japan
Prior art keywords
carbon dioxide
building material
cement
calcium carbonate
dioxide gas
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
Application number
JP13427696A
Other languages
Japanese (ja)
Inventor
Sadashi Taniguchi
貞司 谷口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nihon Spindle Manufacturing Co Ltd
Original Assignee
Nihon Spindle Manufacturing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nihon Spindle Manufacturing Co Ltd filed Critical Nihon Spindle Manufacturing Co Ltd
Priority to JP13427696A priority Critical patent/JPH09296525A/en
Publication of JPH09296525A publication Critical patent/JPH09296525A/en
Pending legal-status Critical Current

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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
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/10—Coating or impregnating
    • C04B20/1055—Coating or impregnating with inorganic materials
    • C04B20/107—Acids or salts thereof
    • 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
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/10—Coating or impregnating
    • C04B20/12—Multiple coating or impregnating
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/5007—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with salts or salty compositions, e.g. for salt glazing
    • C04B41/501—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with salts or salty compositions, e.g. for salt glazing containing carbon in the anion, e.g. carbonates
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/29—Frost-thaw resistance

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Building Environments (AREA)
  • Aftertreatments Of Artificial And Natural Stones (AREA)

Abstract

PROBLEM TO BE SOLVED: To improve the durability and waterproof and reduce the use quantity of the coating resin by forming a cement building material whose surface is humidified in the carbon dioxide atmosphere of the prescribed pressure to form a fine calcium carbonate layer on the surface of the building material. SOLUTION: In a surface preparing equipment 1, a cement building material W in which water is sufficiently absorbed in advance is stored in a container A, the gaseous carbon dioxide is pressed into the container A from a gaseous carbon dioxide cylinder B, and the container is kept under the condition of the pressure of about 3atm. for about 10 hours at the temperature of 50-60 deg.C, more preferably 55 deg.C. Calcium hydroxide is reacted with gaseous carbon dioxide to form a fine calcium carbonate layer on the surface. Then, the resin coating is further executed as necessary. The durability of the building material is improved by preventing the reaction with gaseous carbon dioxide in the air, penetration of water is prevented, the penetration amount of the coating resin is also reduced, and the use of the resin can be reduced.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明はセメント系建材（コ
ンクリートを含む）の表面組織の下地処理方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating the surface texture of cement-based building materials (including concrete).

【０００２】[0002]

【従来の技術】上記セメント系建材は耐久性に優れてい
ることは知られているが、表面は凹凸状で浸透性が高
く、長期の使用により雨水が浸透してその成分の一つの
水酸化カルシュウムが溶出遊離し、空気中の炭酸ガスと
反応して白粉状の炭酸カルシュウムを形成し、劣化する
等の問題がある。このため耐久性を増すためには、例え
ば樹脂コーティングを施す手段が採られている。It is known that the above cement-based building materials are excellent in durability, but the surface is uneven and has high permeability, and rainwater permeates through long-term use and one of its components, hydroxylation. There is a problem that calcium is eluted and released, reacts with carbon dioxide gas in the air to form white powder-like calcium carbonate, and deteriorates. Therefore, in order to increase the durability, for example, means for applying a resin coating is adopted.

【０００３】[0003]

【発明が解決しようとする課題】しかし上記建材は上述
の如く浸透性が高く、高価な樹脂コーティングの使用量
が大きく、しかも長期の使用により該樹脂コーティング
の耐久性が劣化したり亀裂等を生じたとき、上述の如く
建材表面の水酸化カルシュムが遊離し、空気中の炭酸ガ
スと反応して炭酸カルシュウムを形成する。このためコ
ーティングは浮き上がって剥離を生じる等の問題があ
る。本発明はかゝる点に鑑み、上記炭酸カルシュームは
性質が緻密である点を利用して表面組織の改良を行い、
建材自身の表面を緻密な組織とし、かつ空気中の炭酸ガ
スとの反応を防止して耐久性を増すと共に、樹脂コーテ
ィングの浸透を阻止して使用量を減少せしめ、防水効果
により耐凍害性の向上を計ることを目的とする。However, the above-mentioned building materials have a high permeability as described above, a large amount of an expensive resin coating is used, and the durability of the resin coating deteriorates or cracks occur due to long-term use. At this time, as described above, calcium hydroxide on the surface of the building material is released and reacts with carbon dioxide gas in the air to form calcium carbonate. Therefore, there is a problem that the coating floats and peels off. In view of these points, the present invention improves the surface structure by utilizing the fact that the above calcium carbonate is dense in nature.
The surface of the building material itself has a dense structure and prevents the reaction with carbon dioxide gas in the air to increase the durability, and also prevents the resin coating from penetrating to reduce the usage amount, and the anti-freezing property due to the waterproof effect. The purpose is to improve.

【０００４】[0004]

【課題を解決するための手段】上記目的を達成するため
のセメント系建材表面組織の下地処理方法の第１の発明
は、セメント系建材の表面を加湿し、所定圧力の炭酸ガ
ス雰囲気内において表面の水酸化カルシュウムと炭酸ガ
スとを反応せしめ炭酸カルシュウムの生成処理を少なく
とも１０時間行い、表面に緻密な炭酸カルシュウム層を
形成することを特徴とする。A first aspect of the present invention, which is a surface treatment method for a cement-based building material surface structure for achieving the above object, humidifies the surface of the cement-based building material, and the surface of the cement-based building material is maintained in a carbon dioxide gas atmosphere at a predetermined pressure. The method is characterized in that calcium hydroxide is reacted with carbon dioxide gas to carry out the generation treatment of calcium carbonate for at least 10 hours to form a dense calcium carbonate layer on the surface.

【０００５】上記の方法からなる本発明は、建材の表面
を加湿することにより水酸化カルシュウムと炭酸ガスと
の反応が効果的に行われる。これにより建材表面に炭酸
カルシュームの緻密な皮膜が形成される。According to the present invention comprising the above method, the reaction between calcium hydroxide and carbon dioxide gas is effectively carried out by humidifying the surface of the building material. As a result, a dense film of calcium carbonate is formed on the surface of the building material.

【０００６】また、第２の発明は、上記第１の発明方法
により建材表面に炭酸カルシュウムの皮膜を形成すると
共に、その表面に樹脂コーティングを施すことを特徴と
するものである。A second aspect of the invention is characterized in that a calcium carbonate film is formed on the surface of the building material by the method of the first aspect, and a resin coating is applied to the surface.

【０００７】上記の方法からなる本発明は、建材表面に
炭酸カルシュウムの皮膜を形成することにより樹脂の浸
透量は減少し、かつ樹脂コーティングに亀裂を生じても
建材自身の空気中の炭酸ガスとの反応は防止され、剥離
浮き上がりを生ずることはない。According to the present invention comprising the above method, the amount of resin permeation is reduced by forming a film of calcium carbonate on the surface of the building material, and even if the resin coating is cracked, carbon dioxide gas in the air of the building material itself is reduced. Reaction is prevented and peeling and lifting does not occur.

【０００８】[0008]

【発明の実施の形態】図１に示す如く本発明のセメント
系建材表面組織の下地処理装置１は、セメント系建材Ｗ
を収納する容器Ａと、炭酸ガスボンベＢより容器内に炭
酸ガスを圧入するポンプＰとを備える。予め十分に吸水
させたセメント系建材Ｗ例えばパネル等を容器Ａ内に収
納し、ポンプＰにより炭酸ガスを圧入し、約３気圧で約
１０時間保持して含有する水酸化カルシュウムを炭酸ガ
スと反応させて炭酸カルシュム層を形成させることによ
り所要の下地処理を完成する。この際、室温は好ましく
は常温より若干高温例えば５０乃至６０°Ｃ、好ましく
は約５５°Ｃに保持する。その際の反応は次の通りであ
る。BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIG. 1, an apparatus 1 for treating the surface texture of a cement-based building material according to the present invention comprises a cement-based building material W.
And a pump P for injecting carbon dioxide gas into the container from a carbon dioxide gas cylinder B. A cement-based building material W, such as a panel, which has been sufficiently absorbed in water is stored in a container A, carbon dioxide gas is injected under pressure by a pump P, and held at about 3 atm for about 10 hours to react calcium hydroxide contained therein with carbon dioxide gas. Then, a required carbonate treatment is completed by forming a calcium carbonate layer. At this time, the room temperature is preferably kept slightly higher than room temperature, for example, 50 to 60 ° C., preferably about 55 ° C. The reaction at that time is as follows.

【０００９】Ｃａ（ＯＨ）2＋ＣＯ2→ＣａＣＯ3＋Ｈ2ＯCa (OH) 2 + CO 2 → CaCO 3 + H 2 O

【００１０】その実験結果を図２以下に基づいて説明す
る。図２乃至図４は炭酸ガス処理と水分との関係を調べ
たもので、図２は乾燥した未処理の建材を、また図３は
乾燥した建材に炭酸ガス処理を施した建材のそれぞれの
Ｘ線回析図を示す。但し炭酸ガス処理は、室温５５°
Ｃ、３気圧で３時間の処理を行う。この状態では、両者
の有為差は認められない。即ち乾燥状態では、上記反応
は生じないものと判断される。The experimental result will be described with reference to FIG. 2 to 4 show the relationship between carbon dioxide treatment and moisture. Fig. 2 shows the dry untreated building materials, and Fig. 3 shows the X of the dried building materials treated with carbon dioxide. A line diffraction diagram is shown. However, carbon dioxide treatment is at room temperature 55 °
C, treatment is performed at 3 atm for 3 hours. In this state, there is no significant difference between the two. That is, it is judged that the above reaction does not occur in the dry state.

【００１１】これに対し図４は水分を充分に付与した状
態で、上記と同一条件で処理した建材のＸ線回析図を示
す。図中Ｘ印はその炭酸カルシュウムの浸透ピークを示
す。この回析の角度から、組成の水酸化カルシュウムが
炭酸ガスと反応して炭酸カルシュウムを形成したことが
判明する。なお、横軸の角度は被測定物に対するＸ線の
入射角度を表す。On the other hand, FIG. 4 shows an X-ray diffraction diagram of a building material which has been treated under the same conditions as described above with a sufficient amount of water being applied. The X mark in the figure indicates the permeation peak of calcium carbonate. From this angle of diffraction, it is found that calcium hydroxide having a composition reacts with carbon dioxide gas to form calcium carbonate. The angle on the horizontal axis represents the incident angle of the X-ray with respect to the measured object.

【００１２】図５は炭酸ガス処理時間とＸ線回析による
第１ピーク（２θ＝２９．４°）の高さとの関係を示
す。なお、ピーク高さとは、Ｘ線回析強度を示す。これ
は、Ｘ線が照射される部位における測定物（本実験にお
いては水酸化カルシュウム）の量を示す。図から判明さ
れる如く３時間の処理でピークの高さが５０を越え十分
な効果があることが判明した。また、１０時間処理によ
り略々飽和に到達することが判断される。よって以下の
実験は１０時間湿式処理を行なうものとする。FIG. 5 shows the relationship between the carbon dioxide treatment time and the height of the first peak (2θ = 29.4 °) by X-ray diffraction. The peak height indicates the X-ray diffraction intensity. This indicates the amount of the measured substance (calcium hydroxide in this experiment) at the site irradiated with X-rays. As is clear from the figure, it was found that the peak height exceeded 50 after 3 hours of treatment, and there was a sufficient effect. Further, it is determined that the 10-hour treatment almost reaches saturation. Therefore, in the following experiment, wet processing is performed for 10 hours.

【００１３】つぎに図６は処理前と処理後との吸水率の
比較を示す。ただし試験は試料Ａ、Ｂの２個を用いて行
ったものである。吸水率の測定は下記による。 条 件、 ５５°Ｃで３気圧の炭酸ガス雰囲気内で１０時間炭酸ガ
ス処理（湿式）を行った試料を、エアバス（１０５°
Ｃ）で２４時間乾燥した後、乾燥重量（Ｗ１）を測定
し、２４時間水中で放置した後、自然吸水重量（Ｗａ）
を測定した。その後５時間真空ポンプで引き完全吸重量
（Ｗ２）を測定した。以下の式により炭酸ガス処理の吸
水率への影響を調べた。 吸水率＝〔（Ｗ２−Ｗ１）／Ｗ１〕×１００ （％） 自然吸水率＝〔（Ｗａ−Ｗ１）／Ｗ１〕×１００（％） 処理前と処理後とでは、その吸水率に差があることは図
より明らかで、これは組織の緻密化の結果によるものと
考えられる。Next, FIG. 6 shows a comparison of water absorption before and after the treatment. However, the test was conducted using two samples A and B. The water absorption is measured as follows. The sample which was subjected to carbon dioxide gas treatment (wet type) for 10 hours in a carbon dioxide gas atmosphere at 55 ° C. and 3 atm under an air bath (105 ° C.)
After being dried in C) for 24 hours, the dry weight (W1) was measured, and after being left in water for 24 hours, the natural water absorption weight (Wa)
Was measured. After that, the sample was pulled by a vacuum pump for 5 hours, and the completely absorbed weight (W2) was measured. The effect of carbon dioxide treatment on water absorption was investigated by the following formula. Water absorption = [(W2-W1) / W1] x 100 (%) Natural water absorption = [(Wa-W1) / W1] x 100 (%) There is a difference in water absorption between before and after the treatment. This is clear from the figure, which is considered to be the result of the densification of the tissue.

【００１４】図７は水銀圧入式ポロシメータによる細孔
径分布の測定結果の比較を示す。但し図中ａは未処理、
ｂは炭酸ガス処理を行った試料である。この実験結果か
ら細孔特に１／１００μ以下の微小細孔は約７０％に減
少している。これにより前記の吸水率が減少したものと
思われる。FIG. 7 shows a comparison of the measurement results of the pore size distribution by the mercury penetration type porosimeter. However, a in the figure is unprocessed,
b is a sample that has been treated with carbon dioxide. From the results of this experiment, the number of micropores, especially micropores of 1/100 μ or less, is reduced to about 70%. It is considered that this reduces the water absorption rate.

【００１５】本発明は、上記処理を行った後、必要によ
り更に樹脂コーティングを施す。この際建材表面は前述
の如く緻密であり、従って浸透性は低下するため、樹脂
の使用量が軽減される。In the present invention, after the above treatment, a resin coating is further applied if necessary. At this time, the surface of the building material is dense as described above, and therefore the permeability is reduced, so that the amount of resin used is reduced.

【００１６】[0016]

【発明の効果】以上の如く本発明によるときは、セメン
ト系建材の表面を加湿し、所定圧力の炭酸ガス雰囲気内
で処理し、表面の水酸化カルシュウムと炭酸ガスとの反
応により炭酸カルシュウム層を生成するようにしたか
ら、その表面組織は緻密な炭酸カルシュウム層が形成さ
れ、空気中の炭酸ガスとの反応を生ずることがなく、耐
久性の向上と水の浸透を防止し防水効果により耐凍害性
の向上をはかることができる。また上記処理を施した
後、その表面に樹脂コーティングを施すときは、建材の
表面が炭酸カルシュウムの形成により緻密な組織とな
り、従って該樹脂の浸透量が減少し、樹脂の使用量を削
減することができ等の効果を有する。As described above, according to the present invention, the surface of the cement-based building material is humidified and treated in a carbon dioxide gas atmosphere of a predetermined pressure, and the calcium carbonate layer on the surface is reacted to react with calcium carbonate layer to form a calcium carbonate layer. Since it is generated, a dense calcium carbonate layer is formed on the surface texture, it does not react with carbon dioxide gas in the air, durability is improved and water penetration is prevented, and frost damage resistance due to waterproof effect It is possible to improve the sex. In addition, after applying the above treatment, when applying a resin coating on the surface, the surface of the building material has a dense structure due to the formation of calcium carbonate, so the permeation amount of the resin is reduced and the amount of resin used is reduced. It has the effect of being able to.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の実施要領の説明図である。FIG. 1 is an explanatory diagram of a gist of an embodiment of the present invention.

【図２】乾燥した未処理の建材のＸ線回析図である。FIG. 2 is an X-ray diffraction diagram of a dry, untreated building material.

【図３】乾燥した建材に炭酸ガス処理を施したときのＸ
線回析図である。[Figure 3] X when carbon dioxide treatment is applied to the dried building material
It is a line diffraction diagram.

【図４】湿度を付与し、図３と同一条件で炭酸ガス処理
を施した建材のＸ線回析図である。FIG. 4 is an X-ray diffraction diagram of a building material subjected to carbon dioxide gas treatment under the same conditions as in FIG. 3, to which humidity is applied.

【図５】処理時間とＸ線回析によるピークの高さとの関
係を示す。FIG. 5 shows the relationship between the processing time and the height of a peak obtained by X-ray diffraction.

【図６】処理前と処理後との吸水率の比較を示す。FIG. 6 shows a comparison of water absorption before and after treatment.

【図７】水銀圧入法による細孔径分布の比較を示す。FIG. 7 shows a comparison of pore size distributions by a mercury intrusion method.

【符号の説明】[Explanation of symbols]

Ｗ セメント系建材 １ 処理装置 W Cement-based building materials 1 Processing equipment

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 セメント系建材の表面を加湿し、所定圧
力の炭酸ガス雰囲気内において表面の水酸化カルシュウ
ムと炭酸ガスとを反応せしめ炭酸カルシュウムの生成処
理を少なくとも１０時間行い、表面に緻密な炭酸カルシ
ュウム層を形成することを特徴とするセメント系建材表
面組織の下地処理方法。1. A surface of a cement-based building material is humidified, and calcium hydroxide on the surface is reacted with carbon dioxide gas in a carbon dioxide gas atmosphere of a predetermined pressure to carry out a generation treatment of calcium carbonate for at least 10 hours to obtain a dense carbon dioxide on the surface. A method for treating the surface texture of a cement-based building material, which comprises forming a calcium layer. 【請求項２】 セメント系建材の表面を加湿し、所定圧
力の炭酸ガス雰囲気内において表面の水酸化カルシュウ
ムと炭酸ガスとを反応せしめ炭酸カルシュウムの生成処
理を少なくとも１０時間行い、表面に緻密な炭酸カルシ
ュウム層を形成すると共に、その表面に樹脂コーティン
グを施すことを特徴とする請求項１記載のセメント系建
材表面組織の下地処理方法。2. A surface of a cement-based building material is humidified, and calcium hydroxide on the surface is reacted with carbon dioxide gas in a carbon dioxide gas atmosphere of a predetermined pressure to perform calcium carbonate generation treatment for at least 10 hours to obtain a dense carbon dioxide on the surface. The surface treatment method for a cement-based building material surface texture according to claim 1, wherein a calcium layer is formed and a resin coating is applied to the surface thereof.
JP13427696A 1996-04-30 1996-04-30 Surface preparation method of surface structure of cement building material Pending JPH09296525A (en)

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JPH09296525A true JPH09296525A (en) 1997-11-18

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014214030A (en) * 2013-04-22 2014-11-17 国立大学法人東京大学 Method for producing material comprising cement hardened body

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014214030A (en) * 2013-04-22 2014-11-17 国立大学法人東京大学 Method for producing material comprising cement hardened body

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