JPH0479989B2 - - Google Patents
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- Publication number
- JPH0479989B2 JPH0479989B2 JP62083024A JP8302487A JPH0479989B2 JP H0479989 B2 JPH0479989 B2 JP H0479989B2 JP 62083024 A JP62083024 A JP 62083024A JP 8302487 A JP8302487 A JP 8302487A JP H0479989 B2 JPH0479989 B2 JP H0479989B2
- Authority
- JP
- Japan
- Prior art keywords
- monomer
- polymer
- concrete
- impregnated
- impregnation
- 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 - Lifetime
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- Aftertreatments Of Artificial And Natural Stones (AREA)
Description
本発明は、ポリマー含浸セメント系製品に関す
るものである。
The present invention relates to polymer-impregnated cementitious products.
いわゆるポリマー含浸コンクリートは、コンク
リート内部にポリマーを介在させたが故に、通常
のコンクリートに比べて強度、耐水性及び耐薬品
性等の特性が優れていると言われている。
従つて、橋脚や護岸用ブロツク、海中構造材、
下水道パイプ、板製品、さらには放射性廃棄物処
理用容器等の材料であるコンクリートには、ポリ
マー含浸コンクリートを用いることが好ましいと
されている。
しかしながら、これまでのポリマー含浸コンク
リートに全く問題点がないわけでもなく、例えば
従来のポリマー含浸コンクリートはそのポリマー
含浸深さの点において充分であるとは言えないと
指摘されている。
たとえば、モノマーとしてメチルメタアクリレ
ートを使用し、そして３Kg／cm2程度の加圧を施し
た場合に、コンクリート層中にモノマーが含浸す
る深さは、通常の許容条件下（例えば通常の含浸
時間等）ではせいぜい50〜60mm程度にすぎず、こ
の程度でも勿論ポリマー含浸コンクリートの特性
向上は大きいものの、さらなる特性向上が求めら
れており、含浸深さの一層の増大が求められてい
るのである。
又、このポリマー含浸深さのより一層の増大が
図られたならば、これまでにポリマー含浸コンク
リートが応用されてきた製品よりもさらに一層広
い範囲にわたつてこのポリマー含浸コンクリート
が応用されるであろうことも予想でき、それ故こ
のような点からも含浸深さの向上が求められてい
る。
それ故、種々の方面からポリマー含浸コンクリ
ートのポリマー含浸深さの向上が要望されている
ものの、経済的な面から、現在の所では上述した
程度のものにすぎない欠点がある。
So-called polymer-impregnated concrete is said to have superior properties such as strength, water resistance, and chemical resistance compared to ordinary concrete because it has a polymer interposed inside the concrete. Therefore, bridge piers, seawall blocks, underwater structural materials,
It is said that it is preferable to use polymer-impregnated concrete as the material for sewer pipes, board products, and even containers for radioactive waste disposal. However, conventional polymer-impregnated concretes are not completely free from problems; for example, it has been pointed out that conventional polymer-impregnated concretes are not sufficient in terms of the depth of polymer impregnation. For example, when methyl methacrylate is used as a monomer and a pressure of about 3 kg/ cm2 is applied, the depth at which the monomer is impregnated into the concrete layer is limited under normal permissible conditions (e.g., normal impregnation time, etc.). ), it is only about 50 to 60 mm at most, and although this level will of course greatly improve the properties of polymer-impregnated concrete, there is a need for further improvements in properties, and a further increase in the impregnation depth is required. Furthermore, if the depth of polymer impregnation is further increased, this polymer-impregnated concrete will be applied to an even wider range of products than the products to which polymer-impregnated concrete has been applied to date. It is also expected that the impregnation depth will be increased from this point of view as well. Therefore, although there has been a demand for an improvement in the depth of polymer impregnation in polymer-impregnated concrete from various points of view, from an economical point of view, there is currently a drawback that the depth of polymer impregnation is only as high as that described above.
本発明者は、ポリマー含浸コンクリートのポリ
マー含浸深さの研究を押し進めて行くうちに、こ
の含浸深さを決める大きな要因として、コンク
リートの組成物自体、すなわちコンクリート組成
物の緻密度、コンクリート組成物の乾燥度、
コンクリート組成物の脱気度、コンクリート組
成物にポリマー構成用のモノマーを含浸充填させ
る際の加圧具合、前記モノマーの含浸性が挙げ
られることに気付いた。
しかしながら、上記〜の因子中、の因子
は、そのコンクリート製品自体から決められるこ
とより、自由に変更できるものではなく、又、
及びの因子はコンクリート製品の製造条件より
大巾な変化は考えられず、又、の因子、すなわ
ち加圧を大巾に大きくすることも現実には困難で
あることに鑑み、モノマーの含浸性向上に研究の
焦点を絞つた。
そこで、モノマーのコンクリート中への含浸性
向上についての研究を進めて行くうちに、すなわ
ちコンクリートの微細孔へのモノマーの含浸を子
細に研究して行くうちに、このモノマー含浸性は
表面張力が小さいモノマー程効率が良く、かつ深
い地点まで含浸していくことに気付いたのであ
る。
そこで、モノマーの表面張力を低下させるよう
な試薬の作用により表面張力を低下させた状態に
してモノマーをコンクリート中に含浸させたとこ
ろ、これは上記した通り、モノマー含浸速度が大
きく、短時間でモノマーがコンクリート中に充填
され、しかも深い地点までモノマーが含浸してい
たのである。
尚、本発明において用いられるモノマー表面張
力低下剤としては、例えばナトリウムラウリルサ
ルフエート、アルコールエトキシレート、ポリエ
ーテル変性ジメチルシロキサン（日本ユニカー製
のＬ−77）、シリコーンとポリオキシアルキレン
との共重合体（東芝シリコーン製のYF3842及び
TSF4460）、シリコーンとポリオキシエチレンと
の共重合体（東芝シリコーン製のTSF4445）、シ
リコーンとポリエーテルとの共重合体（トーレシ
リコーンSH3746，3748，3771，3749）等があり、
このようなモノマー表面張力低下剤をメチルメタ
アクリレートあるいはスチレン、その他セメント
系製品の物性向上の為のポリマーを構成する重合
性モノマーに対して約0.01〜0.5重量％添加した
モノマー溶液中にセメント系製品を例えば浸漬す
ることによつて、モノマーがセメント系製品中に
効率よく含まれるようになる。
又、このようなモノマー溶液中に、ポリマーと
素材であるセメント系製品との結合力を高める
為、シラン系あるいはチタレート系等のカツプリ
ング剤を所定量、例えば重合性モノマーに対して
約0.25〜１重量％加えておくとより一層好ましく
なる。
本発明は上記の研究成果を基にして達成された
ものであり、重合性モノマー、該重合性モノマー
に対して約0.01〜0.5重量％のモノマー表面張力
低下剤、及び該重合性モノマーに対して約0.25〜
１重量％のカツプリング剤を含ませたセメント系
物に重合処理を施してなることを特徴とするポリ
マー含浸セメント系製品を提案するものである。
セメント系製品としては、通常のコンクリート製
品に限られることなく、例えば鋼繊維、ガラス繊
維、ナイロン繊維、炭素繊維等適宜な補強用繊維
を混入した繊維補強コンクリート、あるいは石膏
等にも適用できるものである。
While conducting research on the polymer impregnation depth of polymer-impregnated concrete, the present inventor found that the major factors that determine the impregnation depth are the concrete composition itself, that is, the density of the concrete composition, and the dryness,
It has been noticed that these include the degree of deaeration of the concrete composition, the degree of pressure applied when the concrete composition is impregnated and filled with the monomer for forming the polymer, and the impregnability of the monomer. However, among the factors listed above, factor 1 cannot be changed freely as it is determined from the concrete product itself, and
The factors of and cannot be considered to be significantly different from the manufacturing conditions of concrete products, and considering that it is difficult in reality to greatly increase the pressure applied, we decided to improve the impregnating property of the monomer. The focus of the research was on Therefore, as we progressed with research on improving the impregnability of monomers into concrete, in other words, while conducting detailed research on the impregnation of monomers into the microscopic pores of concrete, we found that this monomer impregnability has a low surface tension. They realized that monomers are more efficient and impregnate deeper points. Therefore, we impregnated concrete with monomer in a state in which the surface tension was lowered by the action of a reagent that lowers the surface tension of the monomer.As mentioned above, the monomer impregnation rate was high, and the monomer was absorbed in a short time. was filled in the concrete, and the monomer was impregnated to a deep point. The monomer surface tension reducing agent used in the present invention includes, for example, sodium lauryl sulfate, alcohol ethoxylate, polyether-modified dimethylsiloxane (L-77 manufactured by Nippon Unicar), and a copolymer of silicone and polyoxyalkylene. (YF3842 manufactured by Toshiba Silicone and
TSF4460), copolymers of silicone and polyoxyethylene (TSF4445 manufactured by Toshiba Silicone), copolymers of silicone and polyether (Toray Silicone SH3746, 3748, 3771, 3749), etc.
Cement-based products are added to a monomer solution containing approximately 0.01 to 0.5% by weight of such a monomer surface tension reducing agent based on methyl methacrylate, styrene, or other polymerizable monomers constituting polymers for improving the physical properties of cement-based products. For example, by soaking, the monomer can be efficiently incorporated into the cement-based product. In addition, in order to increase the bonding strength between the polymer and the cement-based product that is the raw material, a coupling agent such as a silane type or titalate type is added to the monomer solution in a predetermined amount, for example, approximately 0.25 to 1 It becomes even more preferable to add % by weight. The present invention has been achieved based on the above research results, and includes a polymerizable monomer, a monomer surface tension reducing agent of about 0.01 to 0.5% by weight relative to the polymerizable monomer, and Approximately 0.25~
The present invention proposes a polymer-impregnated cement product characterized in that it is made by polymerizing a cement material impregnated with 1% by weight of a coupling agent.
Cement-based products are not limited to ordinary concrete products, but can also be applied to fiber-reinforced concrete mixed with appropriate reinforcing fibers such as steel fibers, glass fibers, nylon fibers, carbon fibers, or plaster. be.
【実施例 １】
水セメント比43％、単位セメント量450Kg／m3、
細骨材率60％、鋼繊維4.0％を用いて10×10×20
cmの鋼繊維補強コンクリート製角柱を製造し、こ
れを150℃の条件下で24時間乾燥する。
このようにして得られた鋼繊維補強コンクリー
ト製角柱を、試験の為、その一面のみを残して残
り五面にエポキシコーテイングを施した。
そして、上記のように構成させた角柱を、通常
の条件下で脱気した後、メチルメタアクリレート
とシランカツプリング剤（１％）とＬ−77（0.5
％）との混合物よりなるモノマー溶液中に浸漬
し、３Kg／cm2の加圧下に４時間放置してモノマー
を角柱内に含浸させる。
この後、モノマーを含浸させた角柱を２時間85
℃下に維持して角柱内に含浸したモノマーの重合
反応を行なわせ、ポリマー含浸コンクリートを得
る。[Example 1] Water-cement ratio 43%, unit cement amount 450Kg/ m3 ,
10×10×20 using fine aggregate ratio 60% and steel fiber 4.0%
A square column made of steel fiber-reinforced concrete with a diameter of 1 cm is manufactured and dried at 150℃ for 24 hours. For testing, the thus obtained steel fiber-reinforced concrete prism was coated with epoxy on one side and the remaining five sides. After degassing the prism constructed as above under normal conditions, methyl methacrylate and silane coupling agent (1%) were added to L-77 (0.5%).
%) and left for 4 hours under a pressure of 3 kg/cm 2 to impregnate the monomer into the prisms. After this, the monomer-impregnated prism was heated for 2 hours 85
The polymerization reaction of the monomer impregnated into the prisms is carried out by maintaining the temperature at 0.degree. C. to obtain polymer-impregnated concrete.
【実施例 ２】
実施例１において、Ｌ−77を0.5％から0.25％
にする外は全く同様に行なう。[Example 2] In Example 1, L-77 was added from 0.5% to 0.25%.
Proceed in exactly the same way except for.
【実施例 ３】
実施例１において、Ｌ−77の代りにナトリウム
ラウリルサルフエートを用いる外は全く同様に行
なう。Example 3 The same procedure as in Example 1 is repeated except that sodium lauryl sulfate is used in place of L-77.
【比較例 １】
実施例１において、Ｌ−77を全く用いない外は
同様に行なう。[Comparative Example 1] The same procedure as in Example 1 was carried out except that L-77 was not used at all.
【氏較例 ２】
実施例１において、シランカツプリング剤を全
く用いない外は同様に行なう。[Comparative Example 2] The same procedure as in Example 1 was carried out except that no silane coupling agent was used.
上記各例で得られたポリマー含浸コンクリート
について、ポリマー含浸深さ及びその機械的強
度、さらにはモノマー溶液の表面張力を調べたの
で、その結果を表に示す。
Regarding the polymer-impregnated concrete obtained in each of the above examples, the depth of polymer impregnation, its mechanical strength, and the surface tension of the monomer solution were investigated, and the results are shown in the table.
【表】
これによれば、本実施例のものは、ポリマーが
深い位置まで含浸しており、その結果機械的強度
は大巾に向上していることがわかる。
又、ポリマー含浸深さをそれ程要しない場合に
は、モノマー含浸に要する時間が短くて済むこと
も窺える。
さらには、上記実施例において含浸深さの向
上、及び機械的強度の向上、あるいは含浸時間の
短縮化は、コンクリート製品を浸漬するモノマー
溶液中に重合性モノマーに対して約0.01〜0.5重
量％のモノマー表面張力低下剤と約0.25〜１重量
％のカツプリング剤を加えておくのみの簡単な手
段で得られるものであり、極めて簡単に実施でき
るものであつて、その実施の為の特別な装置も要
らず、従来の場合と同様にして実施でき、低コス
トで実施できるものである。[Table] According to this table, it can be seen that the polymer of this example is deeply impregnated with the polymer, and as a result, the mechanical strength is greatly improved. It can also be seen that when the depth of polymer impregnation is not so great, the time required for monomer impregnation can be shortened. Furthermore, in the above examples, the improvement of the impregnation depth, the improvement of the mechanical strength, or the shortening of the impregnation time was achieved by adding about 0.01 to 0.5% by weight of the polymerizable monomer to the monomer solution in which the concrete product is immersed. It can be obtained simply by adding a monomer surface tension reducing agent and about 0.25 to 1% by weight of a coupling agent, and it is extremely easy to carry out, and no special equipment is required for its execution. It is not necessary and can be implemented in the same manner as in the conventional case, and can be implemented at low cost.
Claims (1)
約0.01〜0.5重量％のモノマー表面張力低下剤、
及び該重合性モノマーに対して約0.25〜１重量％
のカツプリング剤を含ませたセメント系物に重合
処理を施してなることを特徴とするポリマー含浸
セメント系製品。1 a polymerizable monomer, a monomer surface tension reducing agent of about 0.01 to 0.5% by weight based on the polymerizable monomer,
and about 0.25 to 1% by weight based on the polymerizable monomer
A polymer-impregnated cement-based product characterized by being made by subjecting a cement-based material impregnated with a coupling agent to polymerization treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8302487A JPS63248784A (en) | 1987-04-06 | 1987-04-06 | Polymer-impregnated cementitious products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8302487A JPS63248784A (en) | 1987-04-06 | 1987-04-06 | Polymer-impregnated cementitious products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63248784A JPS63248784A (en) | 1988-10-17 |
| JPH0479989B2 true JPH0479989B2 (en) | 1992-12-17 |
Family
ID=13790669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8302487A Granted JPS63248784A (en) | 1987-04-06 | 1987-04-06 | Polymer-impregnated cementitious products |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63248784A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006327834A (en) * | 2005-05-23 | 2006-12-07 | Materras Oume Kogyo Kk | Acid-resistant concrete molded product, structure and method for manufacturing acid-resistant concrete molded product |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5396023A (en) * | 1977-02-03 | 1978-08-22 | Ishikawa Takashi | Permeable water proofing agent |
| JPS5825075B2 (en) * | 1979-05-19 | 1983-05-25 | 小沢コンクリ−ト工業株式会社 | Manufacturing method for polymer-impregnated concrete products |
-
1987
- 1987-04-06 JP JP8302487A patent/JPS63248784A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63248784A (en) | 1988-10-17 |
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