JPH0393680A - Coating and impregnating agent for hardened material of cement - Google Patents
Coating and impregnating agent for hardened material of cementInfo
- Publication number
- JPH0393680A JPH0393680A JP22756989A JP22756989A JPH0393680A JP H0393680 A JPH0393680 A JP H0393680A JP 22756989 A JP22756989 A JP 22756989A JP 22756989 A JP22756989 A JP 22756989A JP H0393680 A JPH0393680 A JP H0393680A
- Authority
- JP
- Japan
- Prior art keywords
- coating
- cement
- impregnating agent
- weight
- hardened material
- 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
Links
- 239000004568 cement Substances 0.000 title claims abstract description 30
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 26
- 239000011248 coating agent Substances 0.000 title claims abstract description 25
- 238000000576 coating method Methods 0.000 title claims abstract description 25
- 239000000463 material Substances 0.000 title abstract description 7
- -1 alkylene glycol ether Chemical compound 0.000 claims abstract description 10
- 239000004094 surface-active agent Substances 0.000 claims abstract description 9
- QCDWFXQBSFUVSP-UHFFFAOYSA-N 2-phenoxyethanol Chemical compound OCCOC1=CC=CC=C1 QCDWFXQBSFUVSP-UHFFFAOYSA-N 0.000 claims abstract description 3
- 150000001346 alkyl aryl ethers Chemical class 0.000 claims description 3
- 229920001515 polyalkylene glycol Polymers 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 19
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 14
- 238000001035 drying Methods 0.000 abstract description 12
- 238000006386 neutralization reaction Methods 0.000 abstract description 6
- CZWLNMOIEMTDJY-UHFFFAOYSA-N hexyl(trimethoxy)silane Chemical compound CCCCCC[Si](OC)(OC)OC CZWLNMOIEMTDJY-UHFFFAOYSA-N 0.000 abstract description 3
- 238000006116 polymerization reaction Methods 0.000 abstract description 3
- 229920001451 polypropylene glycol Polymers 0.000 abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 16
- 230000035515 penetration Effects 0.000 description 15
- 239000004570 mortar (masonry) Substances 0.000 description 13
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 12
- 238000012360 testing method Methods 0.000 description 12
- 239000004576 sand Substances 0.000 description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 8
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 description 6
- 238000005470 impregnation Methods 0.000 description 6
- 239000001569 carbon dioxide Substances 0.000 description 5
- 239000004567 concrete Substances 0.000 description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Chemical compound C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 description 2
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 2
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- SXPLZNMUBFBFIA-UHFFFAOYSA-N butyl(trimethoxy)silane Chemical compound CCCC[Si](OC)(OC)OC SXPLZNMUBFBFIA-UHFFFAOYSA-N 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- UWGJCHRFALXDAR-UHFFFAOYSA-N diethoxy-ethyl-methylsilane Chemical compound CCO[Si](C)(CC)OCC UWGJCHRFALXDAR-UHFFFAOYSA-N 0.000 description 1
- NJDNXYGOVLYJHP-UHFFFAOYSA-L disodium;2-(3-oxido-6-oxoxanthen-9-yl)benzoate Chemical compound [Na+].[Na+].[O-]C(=O)C1=CC=CC=C1C1=C2C=CC(=O)C=C2OC2=CC([O-])=CC=C21 NJDNXYGOVLYJHP-UHFFFAOYSA-L 0.000 description 1
- SBRXLTRZCJVAPH-UHFFFAOYSA-N ethyl(trimethoxy)silane Chemical compound CC[Si](OC)(OC)OC SBRXLTRZCJVAPH-UHFFFAOYSA-N 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- RJMRIDVWCWSWFR-UHFFFAOYSA-N methyl(tripropoxy)silane Chemical compound CCCO[Si](C)(OCCC)OCCC RJMRIDVWCWSWFR-UHFFFAOYSA-N 0.000 description 1
- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical compound CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910001961 silver nitrate Inorganic materials 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- NBXZNTLFQLUFES-UHFFFAOYSA-N triethoxy(propyl)silane Chemical compound CCC[Si](OCC)(OCC)OCC NBXZNTLFQLUFES-UHFFFAOYSA-N 0.000 description 1
- ZNOCGWVLWPVKAO-UHFFFAOYSA-N trimethoxy(phenyl)silane Chemical compound CO[Si](OC)(OC)C1=CC=CC=C1 ZNOCGWVLWPVKAO-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、セメント硬化物用塗布含浸剤に関し、詳しく
はモルタル、コンクリートのようなセメント硬化物に塗
布して浸透させ、水、塩化物イオン、空気中の二酸化炭
素ガスなどの浸透を遮弊するための材料に関する。Detailed Description of the Invention "Field of Industrial Application" The present invention relates to a coating and impregnating agent for hardened cement products, and more specifically, it is applied to hardened cement products such as mortar and concrete and allowed to penetrate into the hardened cement products to absorb water and chloride ions. , relates to a material for blocking the penetration of carbon dioxide gas, etc. in the air.
「従来の技術」
モルタル、コンクリートのようなセメント硬化物は、水
や塩化物イオンが浸透しやすいので、これらの浸透を防
止するために表面にオルガノアルコキシシランを塗布し
て浸透させることが提案され、試みられている。``Prior art'' Hardened cement materials such as mortar and concrete are easily penetrated by water and chloride ions, so it has been proposed to apply organoalkoxysilane to the surface to prevent these penetrations. , has been attempted.
一方、セメント硬化物は、乾燥すると収縮して亀裂がは
いるので、収縮や亀裂を防止するため表面にアルキレン
グライコールエーテル系界面活性剤を塗布して浸透させ
ることが提案され、試みられている。On the other hand, cured cement shrinks and cracks when it dries, so it has been proposed and attempted to apply an alkylene glycol ether surfactant to the surface and allow it to penetrate in order to prevent shrinkage and cracks. .
「発明が解決しようとする課題」
しかしながら、オルガノアルコキシシランを塗布し浸透
させると、たしかに水や塩化物イオンの浸透を大幅に低
減させることができるが、空気中の二酸化炭素ガスによ
るセメント硬化物の中性化や乾燥による収縮や亀裂を殆
ど防止することができないという問題がある。``Problem to be solved by the invention'' However, it is true that by applying and permeating organoalkoxysilane, it is possible to significantly reduce the permeation of water and chloride ions, but the problem is that the hardening of cement by carbon dioxide gas in the air can be significantly reduced. There is a problem in that shrinkage and cracking due to carbonation and drying can hardly be prevented.
また、アルキレングライコールエーテル系界面活性剤を
塗布して浸透させると、たしかに乾燥による収縮や亀裂
を大幅に低減させることができるが、水や塩化物イオン
の浸透を殆ど防止することができないという問題がある
。Furthermore, if an alkylene glycol ether surfactant is applied and allowed to penetrate, shrinkage and cracking due to drying can be significantly reduced, but the problem is that it is hardly able to prevent the penetration of water or chloride ions. There is.
そこで、本発明者はかかる従来技術の問題点を解消すべ
く鋭意研究した結果、本発明に到達した。Therefore, the present inventor conducted extensive research to solve the problems of the prior art, and as a result, arrived at the present invention.
すなわち、本発明は、セメント硬化物に塗布して浸透さ
せると、空気中の二酸化炭素ガスによるセメント硬化物
の中性化を大幅に低減させることができるのみならずる
、セメント硬化物の乾燥による収縮や亀裂の発生を大幅
に低減させることができ、かつ、セメント硬化物中への
水や塩化物イオンの浸透を低減させることができる、セ
メント硬化物用塗布含浸剤を提供することを目的とする
。That is, when the present invention is applied to a cured cement product and permeated therein, it can not only significantly reduce the carbonation of the cured cement product due to carbon dioxide gas in the air, but also shrinkage due to drying of the cured cement product. The purpose of the present invention is to provide a coating impregnating agent for cured cement that can significantly reduce the occurrence of cracks and cracks and also reduce the penetration of water and chloride ions into the cured cement. .
「課題を達成するための手段とその作用」この目的は、
（イ） オルガノアルコキシシラン
９０−４０重量％
および
（ロ） アルキレングライコールエーテル系界面活性剤
１０−６０重量％からなる、セメン
ト硬化物用塗布含浸剤により達成される。"Means for achieving the object and their effects" This purpose is to produce a cured cement product consisting of (a) 90-40% by weight of organoalkoxysilane and (b) 10-60% by weight of alkylene glycol ether surfactant. This is achieved by applying impregnating agents.
（イ）成分のオルガノアルコキシシランは、主にセメン
ト硬化物に水や塩化物イオンが浸透するのを防止する作
用をする。Component (a) organoalkoxysilane mainly functions to prevent water and chloride ions from penetrating into the cured cement.
オルガノアルコキシシランは、常温で液状であることが
好ましく、代表例としてオルガノトリアルコキシシラン
、ジオルガノジアルコキシシラン、トリオルガノアルコ
キシシラン、オルガノハイドロジェンジアルコキシシラ
ンがある。The organoalkoxysilane is preferably liquid at room temperature, and representative examples include organotrialkoxysilane, diorganodialkoxysilane, triorganoalkoxysilane, and organohydrogendialkoxysilane.
これらのうちではアルキル基を有し、アルコキシ基が２
個または３個、特には３個存在するものが作用効果の点
で好ましい。Among these, it has an alkyl group, and an alkoxy group has 2
It is preferable to have 1 or 3, especially 3, from the viewpoint of effectiveness.
こうしたオルガノアルコキシシランとして、メチルトリ
メトキシシラン、エチルトリメトキシシラン，ｎ−プチ
ルトリメトキシシラン，ｎ一ヘキシルトリメトキシシラ
ン，ｎ−プロビルトリエトキシシラン、メチルトリプロ
ポキシシラン、メチルエチルジエトキシシラン、メチル
（ｎ−ヘキシル）シメトキシシラン、フェニルトリメト
キシシランが例示される。Such organoalkoxysilanes include methyltrimethoxysilane, ethyltrimethoxysilane, n-butyltrimethoxysilane, n-hexyltrimethoxysilane, n-propyltriethoxysilane, methyltripropoxysilane, methylethyldiethoxysilane, methyl (n-hexyl)simethoxysilane and phenyltrimethoxysilane are exemplified.
オルガノアルコキシシランは、２種以上を併用してもよ
い。Two or more types of organoalkoxysilanes may be used in combination.
（ロ）成分のアルキレングライコールエーテル系界面活
性剤は、主にセメント硬化物の乾燥に伴う収縮や亀裂を
防止し、空気中の二酸化炭素ガスによるセメント硬化物
の中性化を防止する作用をする。The alkylene glycol ether surfactant, component (b), mainly has the effect of preventing shrinkage and cracking of cured cement products as they dry, and of preventing carbonation of cured cement products due to carbon dioxide gas in the air. do.
アルキレングライコール系界面活性剤は、常温で液状で
あることが好ましく、代表例として炭素原子数２または
３のアルキレングライコールのポリマーの片末端をアル
コールまたはフェノールもしくはアルキルフェノールに
より二一テル化したものがある。より具体的には、ポリ
エチレングライコールのモノアルキルエーテル、モノフ
ェニルエーテルもしくはモノアルキルフェニノレエーテ
ノレ、ポリプロピレングライコーノレのモノアルキルエ
ーテル、モノフェニルエーテルもしくはモノアルキルフ
ェニルエーテルがあり、アルキル基は炭素原子数が３−
１２の直鎖状のものがある。また、ポリアルキレングラ
イコーノレはエチレングライコーノレとプロピレングラ
イコールのコポリマーであってもよい。The alkylene glycol surfactant is preferably liquid at room temperature, and a typical example is one obtained by converting one end of a polymer of alkylene glycol having 2 or 3 carbon atoms into a 2-terminal with alcohol, phenol, or alkylphenol. be. More specifically, there are monoalkyl ether, monophenyl ether or monoalkylphenyl ether of polyethylene glycol, monoalkyl ether, monophenyl ether or monoalkylphenyl ether of polypropylene glycol, and the alkyl group is a carbon atom. The number is 3-
There are 12 straight chains. Further, the polyalkylene glycol may be a copolymer of ethylene glycol and propylene glycol.
（ロ）成分は、２種以上を併用してもよい。Two or more of the components (b) may be used in combination.
（イ）成分が少なすぎると水や塩化物イオンの浸透防止
能が不十分となり、 （口）成分が少なすぎるとセメン
ト硬化物の収縮や龜裂防止能及び空気中の二酸化炭素ガ
スによる中和防止能が不十分となるので、 （イ）成分
が９０−４０ｍ量％であり、 （ロ）成分がｉｏ−ｅｏ
重量％とされ、好ましくは（イ）成分６０−６０重量％
、（ロ）成分が２０−４０重量％である。(b) If the amount of the component is too low, the ability to prevent penetration of water and chloride ions will be insufficient. Since the prevention ability will be insufficient, (a) the component is 90-40m%, and (b) the component is io-eo.
Component (a) is preferably 60-60% by weight.
, (b) component is 20-40% by weight.
本発明の塗布含浸剤は、 （イ）成分と（口）成分を単
に混合することにより容易に製造することができる。
（イ）成分と（ロ）成分の片方または両方が常温で固形
状であるときは共通の溶剤を添加して溶解してもよい。The coating and impregnating agent of the present invention can be easily produced by simply mixing the components (a) and (b).
When one or both of component (a) and component (b) are solid at room temperature, a common solvent may be added to dissolve them.
本発明の塗布含浸剤を塗布する対象となるセ．メント硬
化物は、セメントと砂、ケイ砂もしくは砕砂の混合物で
あるモルタル、セメントと砂、ケイ砂もしくは砕砂と砂
利もしくは砕石との混合物であるコンクリート、セメン
トと砂、ケイ砂もしくは砕砂と発砲剤との混合物を水蒸
気養生してなるＡＬＣが代表的である。The cells to be coated with the coating/impregnating agent of the present invention. Mento hardened products include mortar which is a mixture of cement and sand, silica sand or crushed sand, concrete which is a mixture of cement and sand, silica sand or crushed sand and gravel or crushed stone, cement and sand, silica sand or crushed sand and foaming agent. A typical example is ALC, which is obtained by curing a mixture of
セメント硬化物は、鉄筋コンクリートのように心材を有
するものであってもよいことはいうまでもない。It goes without saying that the cured cement material may have a core material, such as reinforced concrete.
セメント硬化物を本発明の塗布含浸剤で処理するには、
塗布、噴霧、浸漬などの方法がある。To treat cured cement with the coating and impregnating agent of the present invention,
Methods include coating, spraying, and dipping.
処理後、常温で放置すればよいが、必要におおじで軽く
加熱したり、日光にあててもよい。After processing, it may be left at room temperature, but if necessary, it may be lightly heated or exposed to sunlight.
該塗布含浸剤は、セメント硬化物の表面から内部へ浸透
して水、塩化物イオン、二酸化炭素ガスなどの遮弊層を
形成する。The applied impregnant penetrates into the hardened cement from the surface to form a barrier layer against water, chloride ions, carbon dioxide gas, and the like.
「実施例」 次に、本発明の実施例と比較例をかかげる。"Example" Next, examples of the present invention and comparative examples will be presented.
実施例と比較例中、塗布含浸剤は下記の条件で調製した
ものを用いた。In the Examples and Comparative Examples, the coating and impregnating agent prepared under the following conditions was used.
（イ）成分としてのｎ−ヘキシルトリメトキシシラン（
以下ｒＨＭｓＪという）と（ロ）成分としてのポリプロ
ピレングライコールモノフェニルエーテル（重合度が２
−７であり、平均重合度が３である。以下ｒＰＰＪとい
う）またはエチレングライコールとプロピレングライコ
ールのコポリマーのモノ（ｎ−ブチル）エーテル（平均
分子量が２００であり、２０℃における粘度が１５ｃｐ
ｓである。以下ｒＥＰＢＪという）各所定量をビーカー
に入れ、マグネチックスタラーにより３分間撹拌した。(a) n-hexyltrimethoxysilane as a component (
(hereinafter referred to as rHMsJ) and (b) component polypropylene glycol monophenyl ether (with a degree of polymerization of 2).
-7, and the average degree of polymerization is 3. (hereinafter referred to as rPPJ) or mono(n-butyl)ether of a copolymer of ethylene glycol and propylene glycol (average molecular weight is 200 and viscosity at 20°C is 15 cp)
It is s. A predetermined amount of each (hereinafter referred to as rEPBJ) was placed in a beaker and stirred for 3 minutes using a magnetic stirrer.
また、供試体用のモルタル片は下記の条件で調製したも
のを用いた。Furthermore, the mortar pieces for the specimens were prepared under the following conditions.
普通ボルトランドセメント１００重量部と豊浦標準砂３
００重量部を鉢に入れて２分間かき混ぜ、７８重量部の
水を加えて３分間よく練り混ぜ（この混合物のフロー値
は１７０であった）、型わくを用いて所定の寸法に成形
した。これを２０℃．６０％ＲＨの湿空に１日間放置し
、ついで、７０℃の温水中に１日放置することにより養
生し、さらに２０℃，５０％ＲＨの空気中で７日間乾燥
養生してモルタル片とした。ただし、乾燥収縮試験用モ
ルタル片は、型わくを用いて成形するにとどめた。100 parts by weight of ordinary boltland cement and 3 parts of Toyoura standard sand
00 parts by weight was placed in a bowl and stirred for 2 minutes, 78 parts by weight of water was added and mixed thoroughly for 3 minutes (the flow value of this mixture was 170), and then molded into a predetermined size using a mold. This was heated to 20℃. It was left in humid air at 60% RH for 1 day, then cured by leaving it in warm water at 70°C for 1 day, and then dry-cured for 7 days in air at 20°C and 50% RH to form mortar pieces. . However, the mortar pieces for the drying shrinkage test were only molded using a mold frame.
供試体は、上記モルタル片の所定箇所に塗布含浸剤を４
０ ０ ｇ／ｎｌ’塗布し、２０℃、５０％ＲＨの空
気中に７日間放置することにより調製した。ただし、塗
布含浸剤を塗布しない供試体は、上記条件で放置するこ
とにより調製した。各供試体について次の条件で試験を
行った。The specimen was coated with an impregnating agent at a predetermined location on the mortar piece.
0 0 g/nl' and left in air at 20° C. and 50% RH for 7 days. However, the specimens to which no coating/impregnating agent was applied were prepared by being left under the above conditions. Tests were conducted on each specimen under the following conditions.
（１）浸透深さの測定
寸法４ ０ Ｘ ４ ０ Ｘ １ ８ ０ ｍ＋＊のモ
ルタル片の４面にエボキシ樹脂塗料を塗布しておき、残
りの対抗する２面に各塗布含浸剤を塗布して、ただちに
モルタル片を割って浸透深さをノギスにより測定した。(1) Measurement of penetration depth: Apply epoxy resin paint to four sides of a mortar piece with dimensions of 40 x 40 x 180 m+*, and apply each coating impregnant to the remaining two opposing sides. Immediately, the mortar pieces were broken and the penetration depth was measured using calipers.
（２）吸水試験
全面を塗布含浸剤で処理してなる又は無処理の寸法４０
Ｘ４０Ｘ１６０ｍｍの供試体を６０″Ｃの乾燥機中で２
４時間乾燥した後、２０℃の水中に２４時間浸漬し、浸
漬前と浸漬後４８時間目の供試体の重量から吸水率を算
出した。(2) Water absorption test Dimensions 40 with or without treatment on the entire surface with coating impregnation agent
A specimen measuring 40x160mm was placed in a dryer at 60"C for 2
After drying for 4 hours, it was immersed in water at 20° C. for 24 hours, and the water absorption rate was calculated from the weight of the specimen before immersion and 48 hours after immersion.
（３）塩化物イオン浸透試験
全面を塗布含浸剤で処理してなる寸法４０×４０Ｘ６０
ｍｍの供試体の型わくに接する２側面を除いた４面を、
エポキシ樹脂塗料でシールした。(3) Chloride ion penetration test Dimensions: 40 x 40 x 60 treated with coating impregnation agent on the entire surface
The four sides of the mm specimen, excluding the two sides that are in contact with the mold frame, are
Sealed with epoxy resin paint.
次に、これを２．５％の塩化ナトリウム溶液（２０℃）
中に７日間浸漬した。浸・漬後、供試体を二分割し、Ｕ
ＮＩ Ｔ９２Ｂ（コンクリートー塩化物イオンの浸透
深さの測定）にしたがって、０． １％フルオレセイ
ンナトリウム液及び０．１Ｎ硝酸銀溶液を噴霧し、白く
変色した層の深さをノギスを用いて測定した。Next, add this to a 2.5% sodium chloride solution (20°C).
Soaked in water for 7 days. After soaking and dipping, the specimen was divided into two parts, and
According to NI T92B (Concrete - Measurement of Chloride Ion Penetration Depth), 0. A 1% sodium fluorescein solution and a 0.1N silver nitrate solution were sprayed, and the depth of the white discolored layer was measured using calipers.
（４）促進中性化試験
全面を塗布含浸剤で処理してなる又は無処理の寸法４
０ Ｘ ４ ０ Ｘ ８ ０ ｍｍの供試体の型わくに
接する２側面を除いた４面を、エポキシ樹脂塗料でシー
ルした。次に、供試体を、１４日間促進中性化試験装置
（３０℃，６０％ＲＨ，ＣＯ２濃度５％）内に静置した
。その後、供試体を二分割し、断面にフェノールフタレ
インの１％アルコール溶液を噴霧して、赤色に変化しな
い部分を中性化域として、中性化深さをノギスを用いて
測定した。(4) Accelerated carbonation test Dimensions 4 with or without treatment on the entire surface with coating impregnation agent
Four sides of a 0 x 40 x 80 mm specimen excluding the two sides in contact with the mold frame were sealed with epoxy resin paint. Next, the specimen was placed in an accelerated neutralization test apparatus (30° C., 60% RH, 5% CO2 concentration) for 14 days. Thereafter, the specimen was divided into two parts, a 1% alcohol solution of phenolphthalein was sprayed onto the cross section, and the neutralization depth was measured using calipers, with the part that did not turn red as the neutralization area.
（５）乾燥収縮試験
寸法１０Ｘ４０Ｘ１６０ｍｍのモルタル片を２０’Ｃ，
６０％ＲＨの空気中で１日間キュアさせた。(5) Drying shrinkage test A piece of mortar with dimensions 10 x 40 x 160 mm was heated at 20'C.
It was cured for 1 day in air at 60% RH.
このモルタル片の５面にエポキシ樹脂塗料を塗布し、２
０℃，６０％ＲＨの空気中で２日間キュアさせた。この
モルタル片の残り１面を塗布含浸剤で処理するか、無処
理のままその長さを測定した。ついで２０℃，５０％Ｒ
Ｈの空気中で２８日間キュアさせてから、ＪＩＳ Ａ
１１２９（モルタル及びコンクリートの長さ変化の試験
方法）に規定されたコンバラメーター法により乾燥収縮
を測定した。Apply epoxy resin paint to 5 sides of this mortar piece, and
It was cured for 2 days in air at 0° C. and 60% RH. The remaining surface of this mortar piece was treated with a coating impregnation agent or left untreated and its length was measured. Then 20℃, 50%R
After curing in H air for 28 days, JIS A
Drying shrinkage was measured by the conbalameter method specified in 1129 (Test method for length change of mortar and concrete).
実施例１〜４
ＨＭＳ３０重量％とＰＰ重量％とからなる塗布含浸剤（
以下ｒＨＰ３−７Ｊという）’ｔ ＨＭＳ５０重量％
とＰＰ５０重量％とからなる塗布含浸剤（以下ｒＨＰ５
−５Ｊという）、ＨＭＳ７０重量％とＰＰ３０重量％と
からなる塗布含浸剤（以下ｒＨＰ７−３Ｊという）、Ｈ
ＭＳ１００重量％からなる塗布含浸剤（以下ｒＨ１０−
０」という）、ＨＭＳ３０重量％とＥＰＢ７０重量％と
からなる塗布含浸剤（以下ｒＨＥ３−７」という）、Ｈ
ＭＳ５０重量％とＥＰＢ５０重量％とからなる塗布含浸
剤（以下ｒＨＥ５−５」という）、ＨＭＳ７０重量％と
ＥＰ８３０重量％とからなる塗布含浸剤（以下ｒＨＥ７
−３」という）について、浸透深さの測定、吸水試験、
塩化物イオン浸透試験、促進中性化試験、及び乾燥収縮
試験を行った。それらの結果を第１表〜第５表に示した
。Examples 1 to 4 Application impregnating agent consisting of 30% by weight of HMS and PP by weight (
(hereinafter referred to as rHP3-7J)'t HMS50% by weight
A coating impregnating agent (hereinafter referred to as rHP5) consisting of 50% by weight of PP and
H
A coating impregnation agent consisting of 100% by weight MS (hereinafter referred to as rH10-
H
A coating impregnating agent consisting of 50% by weight of MS and 50% by weight of EPB (hereinafter referred to as rHE5-5), a coating impregnating agent consisting of 70% by weight of HMS and 830% by weight of EP (hereinafter referred to as rHE7)
-3), measurement of penetration depth, water absorption test,
Chloride ion penetration tests, accelerated neutralization tests, and drying shrinkage tests were conducted. The results are shown in Tables 1 to 5.
第１表
浸透深さ
第２表
吸水率
第３表
塩化物イオン浸透深さ
第４表
中性化深さ
第６表
乾燥収縮
以上の試験結果より、本発明の塗布含浸剤Ｃ１空気中の
二酸化炭素ガスによる中性化防止能と乾燥収縮防止能が
きわめてすぐれているのみ？Ｊらず、水や塩化物イオン
の浸透防止能もすぐわていることがわかる。Table 1 Penetration Depth Table 2 Water Absorption Rate Table 3 Chloride Ion Penetration Depth Table 4 Neutralization Depth Table 6 Drying Shrinkage Based on the above test results, the coating impregnation agent of the present invention C1 Dioxide in the air Only the ability to prevent carbonation caused by carbon gas and the ability to prevent drying shrinkage is extremely good. It can be seen that it also has excellent ability to prevent penetration of water and chloride ions.
〔発明の効果］
本発明のセメント硬化物用塗布含浸剤は、オルガノアル
コキシシラン９０−４０ｉ１ｆｆｆｌ％とアルキレング
ライコールエーテル系界面活性剤１０−６０重量％とか
らなるので、空気中の二酸化炭素ガスによるセメント硬
化物の中性化防止能がきわめてすぐれているのみならず
セメント硬化物の乾燥収縮防止能がきわめてすぐれてお
り、水や硬化物イオンの浸透防止もすぐれている。[Effects of the Invention] The coating and impregnating agent for cured cement of the present invention is composed of 90-40il% of organoalkoxysilane and 10-60% by weight of alkylene glycol ether surfactant, so It not only has an extremely good ability to prevent carbonation of a hardened cement product, but also has an extremely good ability to prevent drying shrinkage of a hardened cement product, and is also excellent in preventing penetration of water and hardened product ions.
Claims (1)
０−６０重量％ からなることを特徴とする、セメント硬化物用塗布含浸
剤。 ２ （イ）成分がアルキルトリアルコキシシランである
、特許請求の範囲第１項記載の塗布含浸剤。 ３ （ロ）成分がポリアルキレングライコールモノアル
キルエーテルまたはポリアルキレングライコールモノフ
ェニルエーテルである、特許請求の範囲第１項記載の塗
布含浸剤。[Claims] 1 (a) 90-40% by weight of organoalkoxysilane and (b) alkylene glycol ether surfactant 1
A coating and impregnating agent for cured cement, characterized by comprising 0 to 60% by weight. 2. The coating and impregnating agent according to claim 1, wherein component (a) is an alkyltrialkoxysilane. 3. The coating and impregnating agent according to claim 1, wherein the component (b) is polyalkylene glycol monoalkyl ether or polyalkylene glycol monophenyl ether.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22756989A JPH0393680A (en) | 1989-09-04 | 1989-09-04 | Coating and impregnating agent for hardened material of cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22756989A JPH0393680A (en) | 1989-09-04 | 1989-09-04 | Coating and impregnating agent for hardened material of cement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0393680A true JPH0393680A (en) | 1991-04-18 |
Family
ID=16862972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22756989A Pending JPH0393680A (en) | 1989-09-04 | 1989-09-04 | Coating and impregnating agent for hardened material of cement |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0393680A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011132102A (en) * | 2009-12-25 | 2011-07-07 | Ube Industries Ltd | Cement hardened body having resistance to sulfate degradation, and method for constructing the hardened body |
| JP2012132002A (en) * | 2010-12-01 | 2012-07-12 | Toho Chem Ind Co Ltd | Alkoxysilane derivative and concrete modifier comprising the same |
| JP2013193885A (en) * | 2012-03-15 | 2013-09-30 | Taiheiyo Materials Corp | Cement based hardened body and curing method of cement mortar or concrete |
-
1989
- 1989-09-04 JP JP22756989A patent/JPH0393680A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011132102A (en) * | 2009-12-25 | 2011-07-07 | Ube Industries Ltd | Cement hardened body having resistance to sulfate degradation, and method for constructing the hardened body |
| JP2012132002A (en) * | 2010-12-01 | 2012-07-12 | Toho Chem Ind Co Ltd | Alkoxysilane derivative and concrete modifier comprising the same |
| JP2013193885A (en) * | 2012-03-15 | 2013-09-30 | Taiheiyo Materials Corp | Cement based hardened body and curing method of cement mortar or concrete |
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