JPS6149271B2 - - Google Patents
Info
- Publication number
- JPS6149271B2 JPS6149271B2 JP53078294A JP7829478A JPS6149271B2 JP S6149271 B2 JPS6149271 B2 JP S6149271B2 JP 53078294 A JP53078294 A JP 53078294A JP 7829478 A JP7829478 A JP 7829478A JP S6149271 B2 JPS6149271 B2 JP S6149271B2
- Authority
- JP
- Japan
- Prior art keywords
- polymer
- cement
- concrete
- weight
- strength
- 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
Links
- 229920000642 polymer Polymers 0.000 claims description 20
- 239000004568 cement Substances 0.000 claims description 14
- 239000011388 polymer cement concrete Substances 0.000 claims description 13
- 239000004604 Blowing Agent Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000005187 foaming Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 238000000354 decomposition reaction Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 239000012615 aggregate Substances 0.000 claims 1
- 239000002657 fibrous material Substances 0.000 claims 1
- 239000004567 concrete Substances 0.000 description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- 239000004156 Azodicarbonamide Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 description 3
- 235000019399 azodicarbonamide Nutrition 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- KZTYYGOKRVBIMI-UHFFFAOYSA-N diphenyl sulfone Chemical compound C=1C=CC=CC=1S(=O)(=O)C1=CC=CC=C1 KZTYYGOKRVBIMI-UHFFFAOYSA-N 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- NBOCQTNZUPTTEI-UHFFFAOYSA-N 4-[4-(hydrazinesulfonyl)phenoxy]benzenesulfonohydrazide Chemical compound C1=CC(S(=O)(=O)NN)=CC=C1OC1=CC=C(S(=O)(=O)NN)C=C1 NBOCQTNZUPTTEI-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- FAMRKDQNMBBFBR-BQYQJAHWSA-N diethyl azodicarboxylate Substances CCOC(=O)\N=N\C(=O)OCC FAMRKDQNMBBFBR-BQYQJAHWSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- FAMRKDQNMBBFBR-UHFFFAOYSA-N ethyl n-ethoxycarbonyliminocarbamate Chemical compound CCOC(=O)N=NC(=O)OCC FAMRKDQNMBBFBR-UHFFFAOYSA-N 0.000 description 1
- 238000010097 foam moulding Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920003986 novolac Polymers 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Description
【発明の詳細な説明】
近年、コンクリートあるいはモルタルのプラス
チツクによる複合化について非常な勢いで開発が
なされている。このプラスチツクによる複合化の
目的として、高強度、防水性、耐薬品性、耐摩耗
性、長寿命化、凍結融解に対する抵抗性等があ
り、製造法によりポリマーセメントコンクリート
（PCC）、レジンコンクリート（REC）、ポリマー
含浸コンクリート（PIC）等に分類される。本発
明はこの内ポリマーセメントコンクリートについ
て従来にない軽量、高強度、安価なポリマーセメ
ントコンクリートを製造する方法に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION In recent years, there has been a great deal of development in the composite of concrete or mortar with plastic. The objectives of this plastic composite include high strength, waterproofness, chemical resistance, abrasion resistance, long life, and resistance to freezing and thawing. Depending on the manufacturing method, polymer cement concrete (PCC), resin concrete (REC), etc. ), polymer-impregnated concrete (PIC), etc. The present invention relates to a method for producing polymer cement concrete that is unprecedented in weight, high strength, and inexpensive.
従来より、ポリマーをコンクリートに混合し、
コンクリート硬化後に加熱してポリマーを溶融し
これをコンクリート空隙中に分散させるポリマー
セメントコンクリートの製造法があつた。これは
単に硬化コンクリートの空隙をポリマーによつて
最密充填しようとしているが、硬化後に微細な空
隙を溶融ポリマーで充填することは、空隙が小さ
くなるに従つて非常に困難になる。従つて、得ら
れたポリマーセメントコンクリートは普通のコン
クリートと比較すれば特性上の向上は見られるも
のの、重量の割には高強度のものが得られない欠
点があつた。そこで本発明者等は、このポリマー
セメントコンクリートの欠点を克服するべく鋭意
研究を鑑みた結果、軽量で、安価な、しかも比較
的高強度のポリマーセメントコンクリートを得る
ことが可能になつた。 Traditionally, polymers are mixed into concrete,
There is a method for producing polymer cement concrete that heats the concrete after it hardens to melt the polymer and disperse it into the concrete voids. This simply attempts to close-pack the voids in the hardened concrete with polymer, but filling the fine voids with molten polymer after hardening becomes extremely difficult as the voids become smaller. Therefore, although the obtained polymer cement concrete has improved properties when compared to ordinary concrete, it has the disadvantage that it cannot provide high strength considering its weight. The inventors of the present invention have conducted extensive research to overcome these drawbacks of polymer cement concrete, and as a result, it has become possible to obtain polymer cement concrete that is lightweight, inexpensive, and relatively high in strength.
即ち、セメントがまだ半硬化の流動性を維持し
ている状態でポリマーを溶融分散させ同時に発泡
させることによつて軽量で、高強度のポリマーセ
メントコンクリートを得ることが可能になつた。
ここで重要な点は、セメントが半硬化の状態でポ
リマーを溶融分散させることにある。セメント中
の水がコンクリートと水和しまだ幾分柔かい状態
にある間にポリマーを溶融分散させることによつ
て、ポリマーはセメント粒子を押し拡げて微細な
空隙にまで入り込むことが可能となるためにポリ
マーの分散性が極めて良好である。また、ポリマ
ーは溶融しながら発泡するため、適度の加圧下に
おいては発泡による体積増加でさらに圧力の増加
があり高度の分散が可能になる。 That is, by melting and dispersing the polymer and simultaneously foaming it while the cement still maintains semi-hardened fluidity, it has become possible to obtain lightweight, high-strength polymer cement concrete.
The important point here is to melt and disperse the polymer while the cement is in a semi-hardened state. By melting and dispersing the polymer while the water in the cement is hydrated with the concrete and is still in a somewhat soft state, the polymer is able to spread the cement particles and penetrate into minute voids. The dispersibility of the polymer is extremely good. Further, since the polymer foams while melting, under moderate pressure, the volume increase due to foaming further increases the pressure, making it possible to achieve a high degree of dispersion.
本発明をさらに詳細に説明する。 The present invention will be explained in further detail.
ポリマーを発泡剤１〜5PHRと共に発泡剤分解
温度以下で溶融混練し、繊維状に押出した後切断
し、またはシート状に押出した後粉砕し、繊維状
または微粉末状にした。このポリマーの微粉末ま
たは繊維25〜200重量部をセメント／（細骨材／
粗骨材）／水＝100／200〜400／10〜50重量部よ
り成る組成物中に均一に分散するよう混合し所望
の形状の金型に流し込み加圧処理しながら脱気泡
操作を行つた。その後20〜48時間、100％RH雰囲
気において養生を行い半硬化の状態にした。 The polymer was melt-kneaded with 1 to 5 PHR of a blowing agent at a temperature below the blowing agent decomposition temperature, extruded into fibers and then cut, or extruded into a sheet and then crushed to form fibers or fine powder. Add 25 to 200 parts by weight of this polymer fine powder or fiber to cement/(fine aggregate/
Coarse aggregate)/water = 100/200 to 400/10 to 50 parts by weight were mixed so as to be uniformly dispersed, poured into a mold of a desired shape, and degassed while being subjected to pressure treatment. . Thereafter, it was cured in a 100% RH atmosphere for 20 to 48 hours to bring it to a semi-hardened state.
しかる後加圧、加熱し発泡および成形を行い所
望のポリマーセメントコンクリートを得た。得ら
れたポリマーセメントコンクリートは重量の割に
は圧縮強度、引張強度等に優れていることがわか
つた。 Thereafter, the mixture was pressurized, heated, foamed, and molded to obtain the desired polymer cement concrete. It was found that the obtained polymer cement concrete had excellent compressive strength, tensile strength, etc. considering its weight.
本発明で使用できるポリマーとは、ポリエチレ
ンやポリプロピレン等のポリオレフイン、ポリ塩
化ビニル、ポリ酢酸ビニル、ポリスチレン、エチ
レン−酢酸ビニル共重合体、NBRやSBR等のゴ
ム類など熱可塑性樹脂、或はフエノール樹脂、エ
ポキシ樹脂（ノボラツク型）等の熱硬化性樹脂で
ある。 Polymers that can be used in the present invention include polyolefins such as polyethylene and polypropylene, polyvinyl chloride, polyvinyl acetate, polystyrene, ethylene-vinyl acetate copolymers, thermoplastic resins such as rubbers such as NBR and SBR, or phenolic resins. , thermosetting resins such as epoxy resins (novolac type).
セメントは、一般的なポルトランドセメント、
スラグセメント等が使用可能である。細骨材およ
び粗骨材は天然にある砂、砂利あるいは人工の砂
石でも良い。その粒子径は使用する材料の寸法に
もよるが、できるだけ小さい方が好ましく最大で
も４〜５mmが良好な結果が得られる限度である。
発泡剤はポリマーを発泡させるために用いるもの
で、一般的に有機発泡剤が使用でき、ポリマーと
混練する際に分解してしまわない程度の高温で分
解が始まるものである。例えば、Ｐ−P′オキシビ
ス（ベンゼンスルホニルヒドラジド）、３−3′ジ
スルホンヒドラジドジフエニルスルホン等のスル
ホンヒドラジド系発泡剤およびアゾビスイソブチ
ロニトリル、アゾジカルボンアミド、ジエチルア
ゾジカルボキシレート等のアゾ系発泡剤などであ
るが、好ましくはできるだけ高温で分解するアゾ
ジカルボンアミド等が最終のポリマーセメントコ
ンクリートの発泡倍率を調整しやすい。 The cement is common portland cement,
Slag cement etc. can be used. The fine aggregate and coarse aggregate may be naturally occurring sand, gravel or man-made sandstone. Although the particle size depends on the dimensions of the material used, it is preferably as small as possible, and a maximum of 4 to 5 mm is the limit at which good results can be obtained.
The blowing agent is used to foam the polymer, and generally an organic blowing agent can be used, and it starts to decompose at a high enough temperature that it will not decompose when kneaded with the polymer. For example, sulfone hydrazide blowing agents such as P-P'oxybis(benzenesulfonyl hydrazide), 3-3' disulfone hydrazide diphenyl sulfone, and azo blowing agents such as azobisisobutyronitrile, azodicarbonamide, diethyl azodicarboxylate, etc. Foaming agents, etc., are preferably used, such as azodicarbonamide, which decomposes at as high a temperature as possible, because it makes it easy to adjust the foaming ratio of the final polymer cement concrete.
さらに、ポリマーとコンクリートの親和性を良
好にするために、シリカ、炭酸カルシウム等の一
般的な無機充填剤および反応性のモノアルコキシ
チタネート等の有機チタネートを使用すれば一層
強度の向上が図れる。 Further, in order to improve the affinity between the polymer and concrete, the strength can be further improved by using general inorganic fillers such as silica and calcium carbonate, and organic titanates such as reactive monoalkoxy titanates.
本発明をさらに明らかにするために実施例にて
説明する。 EXAMPLES In order to further clarify the present invention, Examples will be described.
実施例
低密度ポリエチレン（密度0.924、分子量
150000〜200000）100重量部に対してアゾジカル
ボンアミド５重量部を添加しこれをダイ部温度
150℃の単軸押出機でシート状に押出し、このシ
ートを粉砕することによつて粒子径約50μｍのポ
リエチレン微粉末を得た。別に普通ポルトランド
セメント／砂／水が重量比２／４／0.5の比率の
セメント混合物を調整しておき、上記ポリエチレ
ン30重量部に対してセメント混合物70重量部を混
合し金型に充填した。100％RH、20℃の雰囲気で
30時間養生した後20Kg/cm2の圧力を加えては常圧
にもどす脱気泡操作を２〜３回繰り返した。その
後180℃まで昇温し、50Kg/cm2で加熱加圧プレスを
行ない発泡成形し、加圧状態で20℃まで冷却しさ
らに８時間静置した。得られたポリマーセメント
コンクリートは10×10×30cmの角棒で、比重
1.3、圧縮強度800Kg/cm2、引張強度45Kg/cm2、曲げ
強度60Kg/cm2、弾性係数（E1／３）3.2×105であ
り普通のセメントコンクリートに比べ重量の割に
は高強度であつた。このポリマーセメントコンク
リートは、互いにセメント、ゴム系接着剤等で容
易に接着でき、透水性もほとんど無く（1/10〜1/
２０）、建材用として最適であつた。Example Low density polyethylene (density 0.924, molecular weight
150000~200000) 5 parts by weight of azodicarbonamide is added to 100 parts by weight, and the die part temperature is
The mixture was extruded into a sheet using a single-screw extruder at 150° C., and the sheet was pulverized to obtain fine polyethylene powder having a particle size of about 50 μm. Separately, a cement mixture of ordinary Portland cement/sand/water in a weight ratio of 2/4/0.5 was prepared, and 70 parts by weight of the cement mixture was mixed with 30 parts by weight of the polyethylene and filled into a mold. In an atmosphere of 100%RH and 20℃
After curing for 30 hours, a degassing operation of applying a pressure of 20 kg/cm 2 and returning to normal pressure was repeated 2 to 3 times. Thereafter, the temperature was raised to 180°C, and foam molding was performed by heating and pressing at 50Kg/cm 2 .The product was cooled under pressure to 20°C and left to stand for further 8 hours. The obtained polymer cement concrete was made into square bars of 10 x 10 x 30 cm, with specific gravity
1.3, compressive strength 800Kg/cm 2 , tensile strength 45Kg/cm 2 , bending strength 60Kg/cm 2 , elastic modulus (E1/3) 3.2×10 5 , and has higher strength relative to its weight than ordinary cement concrete. It was hot. This polymer cement concrete can be easily bonded to each other with cement, rubber adhesive, etc., and has almost no water permeability (1/10 to 1/1
20), it was most suitable for use as a building material.
上述のように、本発明によればコンクリート中
の微細間隙、すなわちコンクリート粒子間にまで
十分発泡ポリマーを充填できるので、次の点で優
れている。 As described above, according to the present invention, the foamed polymer can be sufficiently filled into minute gaps in concrete, that is, even between concrete particles, so that the present invention is excellent in the following points.
(1) 同一の強度を有しながら軽量化が図れる。(1) Lighter weight can be achieved while maintaining the same strength.
(2) 透水性が小さい。(2) Low water permeability.
(3) 防音性に優れる。(3) Excellent soundproofing properties.
(4) 耐候性に優れ、特に温度変化、湿度変化によ
る劣化が小さい。(4) Excellent weather resistance, with little deterioration due to changes in temperature and humidity.
(5) 低荷重におけるクリープが小さい。(5) Small creep at low loads.
また、セメントの半硬化状態においては、まだ
流動性があるため、発泡を抑制されず、十分軽量
化を図ることができる。更に、成形サイクルも比
較的速く、その工業的価値は極めて大なるもので
ある。 Furthermore, since cement still has fluidity in a semi-hardened state, foaming is not suppressed and the weight can be sufficiently reduced. Furthermore, the molding cycle is relatively fast, and its industrial value is extremely large.
Claims (1)
機発泡剤を添加、混練後粉砕または叩解した微細
片状または繊維状物をセメント、骨材、水より成
る組成物に混合し、セメントが半硬化状態の間に
加熱、加圧しポリマーを溶融しながら発泡させる
ことを特徴とするポリマーセメントコンクリート
の製造方法。1 Add an organic blowing agent whose decomposition temperature is lower than that of the polymer to the polymer, mix the crushed or beaten fine flakes or fibrous material with a composition consisting of cement, aggregate, and water, and mix the cement into a semi-hardened state. A method for producing polymer cement concrete, which is characterized by foaming the polymer while melting it by heating and applying pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7829478A JPS557525A (en) | 1978-06-28 | 1978-06-28 | Manufacture of polymer cement concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7829478A JPS557525A (en) | 1978-06-28 | 1978-06-28 | Manufacture of polymer cement concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS557525A JPS557525A (en) | 1980-01-19 |
| JPS6149271B2 true JPS6149271B2 (en) | 1986-10-28 |
Family
ID=13657907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7829478A Granted JPS557525A (en) | 1978-06-28 | 1978-06-28 | Manufacture of polymer cement concrete |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS557525A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0783526A (en) * | 1993-09-13 | 1995-03-28 | Hitachi Ltd | Compression type refrigerator |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58184516A (en) * | 1982-04-22 | 1983-10-28 | Oval Eng Co Ltd | Measuring device for liquid stored in tank |
| JPS61144503A (en) * | 1984-12-18 | 1986-07-02 | Kajima Corp | Measuring instrument for wall thickness of vertical steel pipe |
| JPS63246610A (en) * | 1987-04-01 | 1988-10-13 | Iseki Kaihatsu Koki:Kk | Method for inspecting pipeline and apparatus for measuring said pipeline |
| JPH05306923A (en) * | 1992-04-30 | 1993-11-19 | Takenaka Komuten Co Ltd | Three-dimensional method and instrument for measuring surface |
-
1978
- 1978-06-28 JP JP7829478A patent/JPS557525A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0783526A (en) * | 1993-09-13 | 1995-03-28 | Hitachi Ltd | Compression type refrigerator |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS557525A (en) | 1980-01-19 |
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