JPH07115904B2 - Elastic polymer-cement composition having fast setting property - Google Patents
Elastic polymer-cement composition having fast setting propertyInfo
- Publication number
- JPH07115904B2 JPH07115904B2 JP22571586A JP22571586A JPH07115904B2 JP H07115904 B2 JPH07115904 B2 JP H07115904B2 JP 22571586 A JP22571586 A JP 22571586A JP 22571586 A JP22571586 A JP 22571586A JP H07115904 B2 JPH07115904 B2 JP H07115904B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- elastic polymer
- cement composition
- rapid
- 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
Links
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
【発明の詳細な説明】 イ)産業上の利用分野 本発明は低温硬化性、速硬性を有し、かつ可撓性、弾力
性を有したポリマーセメント組成物に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION a) Field of Industrial Application The present invention relates to a polymer cement composition having low-temperature curability, rapid hardening, flexibility and elasticity.
本発明のポリマーセメント組成物は建築・土木その他の
種々の分野に利用できるものである。The polymer cement composition of the present invention can be used in various fields such as construction and civil engineering.
ロ)従来の技術 ポルトランドセメントにエチレン酢ビ系、SBR系、アク
リル系等の合成樹脂エマルションを配合し、接着性や耐
水性、曲げ強度等に優れたモルタルコンクリート組成物
が得られる事は公知である。またセメントモルタル中に
硫酸バンドや生石灰等の電解質を添加し、凍結防止や低
温時の硬化特性を向上させることは公知である。(B) Conventional technology It is well known that a synthetic mortar concrete composition having excellent adhesiveness, water resistance, bending strength, etc. can be obtained by mixing synthetic resin emulsion such as ethylene vinyl acetate type, SBR type and acrylic type into Portland cement. is there. It is also known to add an electrolyte such as a sulfuric acid band or quick lime to cement mortar to prevent freezing and improve hardening characteristics at low temperatures.
ハ)発明が解決しようとする問題点 ポリマーセメント組成物において、合成樹脂エマルショ
ンを配合し優れた性能を発現するまでには長時間を要し
ている。また、ポリマーセメント中に硫酸バンドや生石
灰の電解質を配合し、硬化速度を速める事はポルリマー
ディスパージョンの電気二重層を破壊し、分散破壊を促
進してゲルの発生や分離等を発生する危険がある。C) Problems to be Solved by the Invention In a polymer cement composition, it takes a long time to mix a synthetic resin emulsion and to exhibit excellent performance. In addition, blending a sulfuric acid band or quicklime electrolyte into the polymer cement to accelerate the curing speed may destroy the electrical double layer of the Pollimer dispersion, promote dispersion destruction, and cause gel formation or separation. There is.
ニ)問題点を解決するための手段 硫酸バンドや生石灰等の電解質を添加した場合、ポリマ
ーエマルションの分散破壊を起こしやすいが、極性基を
配し電解質との架橋反応を促進させる事により、安定し
たポリマーセメントペースト状態を保ち、なおかつ従来
品より4〜5倍も硬化速度を速める事を見出した。硫酸
バンドや生石灰は、一般工業品として比較的容易に入手
しやすくまた取扱いも容易なセメント混和用添加剤であ
る。D) Means for solving the problem When an electrolyte such as a sulfuric acid band or quick lime is added, dispersion breakage of the polymer emulsion is likely to occur, but it is stabilized by arranging a polar group and promoting a crosslinking reaction with the electrolyte. It has been found that the polymer cement paste state is maintained and the curing speed is increased 4 to 5 times faster than the conventional product. Sulfuric acid bands and quick lime are cement admixtures that are relatively easily available and easily handled as general industrial products.
主な電解質添加剤についてセメントとの凝集効果を調べ
た結果、第1表のような結果となった。As a result of examining the coagulation effect of the main electrolyte additives with cement, the results shown in Table 1 were obtained.
この結果からも硫酸バンド(Al2(SO4)3)と生石灰
(CaO)が優れた硬化性を有している事がわかる。しか
しながら、これら電解質はポリマーディスパージョンの
分散破壊を起こしやすく、その添加濃度はSchulye−Har
dytの法則に従い、表−2の様になる。These results also show that the sulfuric acid band (Al 2 (SO 4 ) 3 ) and quick lime (CaO) have excellent curability. However, these electrolytes are liable to cause dispersion fracture of the polymer dispersion, and the addition concentration is Schulye-Har
According to dyt's law, it becomes like Table-2.
従って添加量は電解質によって違うが、硫酸バンドにお
いてはポルトランドセメント100重量部に対して0.1〜0.
5重量部、生石灰においては、1〜3重量部、望ましく
は1.2〜2.0重量部である。添加量が前記範囲をはずれる
場合は、全く効果が認められないか、またはポリマーデ
ィスパージョンの分散破壊が先行し、ゲル分離の発生が
多くなってしまう。Therefore, the addition amount depends on the electrolyte, but in the sulfuric acid band is 0.1 to 0 per 100 parts by weight of Portland cement.
5 parts by weight, in quicklime, 1 to 3 parts by weight, preferably 1.2 to 2.0 parts by weight. If the amount added is out of the above range, no effect is observed, or dispersion destruction of the polymer dispersion precedes, and gel separation frequently occurs.
またポリマーディスパージョンとしては、耐久性能が最
も優れたアクリルエマルション中で造膜後の塗膜強度や
可撓性、粘着性を考慮してTgが −25℃〜+5℃の範囲が選ばれる。−25℃以下の低いTg
では粘着性が多く塗膜強度が弱くなり、また+5℃以上
では必要な可撓性柔軟性が得がたい。具体的にはアクリ
ル酸エステル結合するアルキル基の炭素数がC2〜C8の範
囲にあるものが良く、この範囲をはずれるものは粘着性
が強かったり、硬度が高すぎたりして充分な性能を出し
えなくなる。尚、本発明の目的を満足する限り、アクリ
ル酸エステル以外のスチレン、エチレン、酢酸ビニル等
を共重合に用いてもよい。In addition, as a polymer dispersion, Tg is considered in consideration of coating strength, flexibility and adhesiveness after film formation in acrylic emulsion with the best durability performance. A range of -25 ° C to + 5 ° C is selected. Low Tg below -25 ℃
If the temperature is above + 5 ° C, it is difficult to obtain the required flexibility. Specifically good that the number of carbon atoms of the alkyl group linked acrylic acid ester is in the range of C 2 -C 8, which out of this range or strong sticky, sufficient performance or hardness is too high Can not be issued. As long as the object of the present invention is satisfied, styrene other than acrylic acid ester, ethylene, vinyl acetate, etc. may be used for the copolymerization.
さらに増粘剤はセメントポリマー混合物の混合安定性塗
付作業性に影響し、最適添加量は0.2〜0.7重量部で、少
ない場合は効果がなく、また多い場合は塗布作業性が困
難となる。また減水剤も欠く事のできない添加剤で、0.
1〜0.8重量部が最適範囲となる。0.8重量部以上添加し
ても減水効果は一定となる。Further, the thickener affects the mixing stability and coating workability of the cement polymer mixture, and the optimum addition amount is 0.2 to 0.7 parts by weight, and when it is small, it is not effective, and when it is large, the coating workability becomes difficult. In addition, a water reducing agent is an indispensable additive.
The optimum range is 1 to 0.8 parts by weight. Even if 0.8 parts by weight or more is added, the water reducing effect becomes constant.
ホ)作用 硫酸バンドや生石灰の電解質はポルマーディスパージョ
ンの末端カルボキシル基やメチロール基と金属架橋し、
ポリマーは分子間架橋を促進され、高分子化が進行す
る。E) Action The sulfuric acid band and quicklime electrolyte are metal-crosslinked with the terminal carboxyl groups and methylol groups of the Polmer dispersion,
Interpolymer cross-linking of the polymer is promoted, and the polymerization proceeds.
一方セメントは硫酸バンドや生石灰の水和熱により、水
和反応が促進され、セメントゲルの発生が促進される。
従って、本来ポリマーディスパージョン等の凝集ゲル化
剤として作用する電解質が、極性基を導入する事によ
り、架橋反応を促進し、また水和熱を発生する事を利用
し、セメント水和反応を促進させる作用を有している事
を見出した。On the other hand, in cement, the hydration reaction is promoted by the hydration heat of the sulfuric acid band and quicklime, and the generation of cement gel is promoted.
Therefore, the electrolyte, which originally acts as an aggregating gelling agent for polymer dispersions, etc., promotes the cross-linking reaction by introducing a polar group, and also utilizes the fact that heat of hydration is generated, facilitating the cement hydration reaction. It has been found that it has the effect of causing.
ヘ)発明の効果 この発明は以上に説明したように、凝集ゲル化作用を有
する電解質をエマルションの極性基と架橋させる事を利
用して、凝集ゲル化する事なく、また水和熱によりセメ
ントゲル発生速度を速める効果を有し、ポリマーセメン
トモルタルで弾性、可撓性を有し、速硬性を付与する効
果がある。F) Effect of the Invention As described above, the present invention utilizes the fact that an electrolyte having a cohesive gelation action is cross-linked with a polar group of an emulsion, without causing cohesive gelation and by heat of hydration to give a cement gel. It has the effect of accelerating the generation rate, and has the effect of imparting quick-hardening properties with the polymer cement mortar having elasticity and flexibility.
ト)実施例 試料の調整 表3〜5に示す配合処方のポリマーセメントモルタルに
おいて、水およびエマルションを予め混合したものと、
これらを除く各成分をドライブレンドしたものに調整
し、JIS A 6916セメント系下地調整塗材5.3試料の調
整に従い混練し用いた。尚、表中の数値は重量部。G) Example Preparation of sample In the polymer cement mortar having the formulation shown in Tables 3 to 5, a mixture of water and an emulsion was mixed in advance,
Each component other than these was prepared by dry blending, and kneaded according to the preparation of JIS A 6916 cement base conditioning coating material 5.3 sample and used. The values in the table are parts by weight.
試験方法 ・硬化時間:4mm石綿スレート板に、試料を2mm厚に塗布
する。これを標準状態(20℃,65%RH)に放置し30分毎
にJIS A 6909(1975)5.3の方法により水を流下し、
塗膜が流失しなくなる時間を硬化時間とした。Test method-Curing time: A sample is applied to a 4 mm asbestos slate board to a thickness of 2 mm. This is left in a standard condition (20 ° C, 65% RH) and water is flowed down every 30 minutes by the method of JIS A 6909 (1975) 5.3.
The time when the coating film was not washed off was defined as the curing time.
・耐衝撃性:JIS A 6916 5.8に準拠、但し高さを100
cmとし、ひび割れ、剥離等の発生の有無を観察した。・ Impact resistance: Conforms to JIS A 6916 5.8, but height is 100
It was set to cm, and the presence or absence of cracks, peeling, etc. was observed.
・耐水性:硬化時間の測定と同様に作製した試料を標準
状態で7日間養生後、20℃の水中に40日間浸漬し、ふく
れ、はがれ等の有無を観察した。-Water resistance: A sample prepared in the same manner as the measurement of the curing time was aged in a standard state for 7 days and then immersed in water at 20 ° C for 40 days to observe the presence or absence of blistering or peeling.
・可撓性:JIS A 6909(1984)5.21に準拠。但し、膜
厚は1mmとした。-Flexibility: Conforms to JIS A 6909 (1984) 5.21. However, the film thickness was 1 mm.
・密着性:JIS A 6916 5.6に従い膜厚2mmとなるよう
に作製、養生した試験片について、表面をカッターでク
ロスカットし、セロハンテープで密着性を測定した。Adhesion: A test piece prepared and cured to have a film thickness of 2 mm according to JIS A 6916 5.6 was cross-cut with a cutter, and the adhesion was measured with cellophane tape.
低温硬化性:硬化時間の測定と同様に作製した試料を−
5℃で24時間養生後、塗膜表面を爪で削り硬化状態をみ
た。Low temperature curability: A sample prepared in the same manner as the measurement of curing time
After curing for 24 hours at 5 ° C., the coating film surface was scraped with a nail to check the cured state.
試験結果 試験結果を表−6に示す。Test results Test results are shown in Table-6.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 FI 技術表示箇所 C04B 111:50 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 6 Identification code Internal reference number FI technical display area C04B 111: 50
Claims (3)
ガラス転移点(以下Tg)が−25℃〜+5℃の範囲にあ
り、極性基としてN−メチロール基、カルボキシル基含
有モノマーを合計で0.1〜3重量%の範囲で有するアク
リル酸エステル系共重合体エマルジョンを固形分で25〜
70重量部、硬化促進剤として生石灰を1〜3重量部また
は、硫酸バンドを0.1〜0.5重量部、添加し、さらに骨
材、体質顔料等の充填材を合計で50〜300重量部および
増粘剤、減水剤を配合してなる速硬性弾性ポリマーセメ
ント組成物。1. A glass transition point (hereinafter referred to as Tg) in the range of -25 ° C. to + 5 ° C. with respect to 100 parts by weight of Portland cement, and 0.1 to 3 in total of N-methylol group and carboxyl group-containing monomer as polar groups. Acrylic ester-based copolymer emulsion having a solid content of 25% by weight
70 parts by weight, 1 to 3 parts by weight of quicklime as a hardening accelerator or 0.1 to 0.5 parts by weight of a sulfuric acid band, and 50 to 300 parts by weight in total of fillers such as aggregate and extender pigment and thickening A rapid-hardening elastic polymer cement composition containing an agent and a water-reducing agent.
の添加量がポルトランドセメント100重量部に対して0.2
〜0.7重量部であることを特徴とする速硬性弾性ポリマ
ーセメント組成物。2. The addition amount of the thickening agent according to claim 1 is 0.2 per 100 parts by weight of Portland cement.
~ 0.7 parts by weight, a rapid-hardening elastic polymer cement composition.
の添加量がポルトランドセメント100重量部に対して0.1
〜0.8重量部であることを特徴とする速硬性弾性ポリマ
ーセメント組成物。3. The amount of the water reducing agent added according to claim 1 is 0.1 with respect to 100 parts by weight of Portland cement.
A rapid hardening elastic polymer cement composition, characterized in that it is 0.8 parts by weight.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22571586A JPH07115904B2 (en) | 1986-09-24 | 1986-09-24 | Elastic polymer-cement composition having fast setting property |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22571586A JPH07115904B2 (en) | 1986-09-24 | 1986-09-24 | Elastic polymer-cement composition having fast setting property |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6379746A JPS6379746A (en) | 1988-04-09 |
JPH07115904B2 true JPH07115904B2 (en) | 1995-12-13 |
Family
ID=16833671
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22571586A Expired - Lifetime JPH07115904B2 (en) | 1986-09-24 | 1986-09-24 | Elastic polymer-cement composition having fast setting property |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH07115904B2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2766854B2 (en) * | 1988-04-30 | 1998-06-18 | 義之 大串 | Concrete structure |
JP2847162B2 (en) * | 1988-04-30 | 1999-01-13 | 義之 大串 | Concrete structure |
JP2004131333A (en) * | 2002-10-10 | 2004-04-30 | Constec Engi Co | Anti-bacterial mortar and method of manufacturing the same |
-
1986
- 1986-09-24 JP JP22571586A patent/JPH07115904B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPS6379746A (en) | 1988-04-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN1075826C (en) | Redispersible dispersion powder composition | |
EP0265929B1 (en) | Curable composition containing acrylic polymer and polyalkylene oxide | |
CN106715491A (en) | A dispersion of (meth)acrylate copolymer containing a hydroxyalkyl (meth)acrylate functional monomer unit for flexible cementitious waterproofing materials | |
JPH0912350A (en) | Concrete accelerator | |
JPH07268167A (en) | Water-proofing material composition | |
KR20160060229A (en) | Emulsion asphalt composition and manufactuaring method thereof, polymer concrete using the same thing and manufactuaring method thereof and repair process of pavement using the same thing | |
JPH07115904B2 (en) | Elastic polymer-cement composition having fast setting property | |
KR100281300B1 (en) | Ultrasonic Carbide Water-Resistant Coatings, Manufacturing Methods And Uses | |
JPH01217053A (en) | Humidity crosslinkable elastic plastic composition and crosslinked soft article | |
WO1985000802A1 (en) | Concrete composition for underwater application | |
JP2000136323A (en) | Flame-retardant coating film waterproofing composition | |
JP4449586B2 (en) | Polymer cement composition | |
JP2850755B2 (en) | Waterproof construction method | |
KR100455761B1 (en) | Water-based acrylic polymer having adhesion characteristic | |
KR20190023280A (en) | A Composite of organicinorganic composite cementitious materials with high-performance and high elastic properties and manufacturing method thereof | |
JP3962248B2 (en) | Cement mortar polymer emulsion and cement mortar composition | |
KR19990069934A (en) | Process for producing cationic asphalt modified with EVA copolymer emulsion and acrylate copolymer emulsion | |
JP2590006B2 (en) | Paint film waterproofing composition | |
JP2002088343A (en) | Elastic sealing material | |
KR100342204B1 (en) | A water-born acrylate rubber as membrane for waterproofing stuff | |
KR100602880B1 (en) | The method of preparing liquid water proofing used in main conponent of functional polyoxyethylene and butylacryllate hybride emulsion | |
SU773061A1 (en) | Glue | |
JPH0226855A (en) | Cement composition | |
Kim et al. | Thermal Resistance of polymer-modified mortars using redispersible polymer powders | |
SU1110794A1 (en) | Adhesive composition |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
EXPY | Cancellation because of completion of term |