JP2004238913A - Concrete-based repairing agent - Google Patents
Concrete-based repairing agent Download PDFInfo
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- JP2004238913A JP2004238913A JP2003029132A JP2003029132A JP2004238913A JP 2004238913 A JP2004238913 A JP 2004238913A JP 2003029132 A JP2003029132 A JP 2003029132A JP 2003029132 A JP2003029132 A JP 2003029132A JP 2004238913 A JP2004238913 A JP 2004238913A
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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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0004—Compounds chosen for the nature of their cations
- C04B2103/001—Alkaline earth metal or Mg-compounds
-
- 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
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
- C04B2111/72—Repairing or restoring existing buildings or building materials
-
- 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
- C04B2111/80—Optical properties, e.g. transparency or reflexibility
- C04B2111/802—White cement
Abstract
Description
【０００１】
【発明の属する技術分野】
本発明は、コンクリート構造物、モルタル構造物等の亀裂、ヘアーラック、ピンホール、肌割れ等を補修するのに最適なコンクリート系補修剤の改良に関する。
【０００２】
【従来の技術】
【特許文献１】特開平５−１７５４５号
【特許文献２】特開平８−１２７５０９号
【０００３】
コンクリート構造物やモルタル構造物は、乾燥収縮や熱膨張等の現象によって亀裂や肌割れ等が生じ易く、例えば亀裂が生じると、雨水が内部に浸入して鉄筋等に腐蝕等の問題を発生させる。このような場合の補修剤として、従来からエポキシ系樹脂やアクリル系樹脂を組成とするものが開発されている。そのうち、アクリル系樹脂としては、特許文献１や特許文献２に記載の硬化性樹脂組成物が提案されている。
【０００４】
【発明が解決しようとする課題】
しかしながら、上記硬化性樹脂組成物は、樹脂強度を向上させることには成功しているが、高温高湿度下の環境では、接着力が弱くなり、耐久性が不充分になることが指摘されている。また、樹脂組成物であるために、地球環境に何らかの悪影響を与えることも懸念されている。
【０００５】
本発明は、上記課題を解決するもので、接着力や耐久性に優れ、製造が容易で地球環境にも悪影響を及ぼすことのないコンクリート系補修剤を提供することを目的とする。
【０００６】
【課題を解決するための手段】
本発明者は、上記課題を解決すべく鋭意検討を行なったところ、樹脂系組成物ではない粉体組成物に水を加えて混練することで、接着性、耐久性に優れ、地球環境にも優しい補修剤を得られることを知得し、本発明を完成させた。
【０００７】
すなわち、本発明は、白セメント１００重量部に対し、シリコン樹脂１〜５重量部、カゼイン５〜１５重量部、カオリン２８〜４０重量部、酸化チタン５〜１５重量部、炭酸ナトリウム１〜５重量部の割合で配合してなる組成物１００重量部に対し、水５０〜７０重量部配合してなるコンクリート系補修剤である。
【０００８】
本発明で用いられるセメントとしては、白セメントが好適であるが、水を添加して硬化するものであればこれに限られるものではない。カゼインの配合量は、白セメント１００重量部に対し、５〜１５重量部が好ましい。この範囲を外れると、少なくても多くても接着力が低下する。また、カオリンは、白セメント１００重量部に対し、２８〜４０重量部が好ましい。２８重量部未満であると硬化不足になり、振動やねじれに対して脆くなる。また、４０重量部を超えると、硬化後硬度が出過ぎて柔軟性が損なわれる。
【０００９】
本発明によるコンクリート系補修剤の最適配合量は、白セメント１００重量部に対し、シリコン樹脂３重量部、カゼイン１０重量部、カオリン３３重量部、酸化チタン１０重量部、炭酸ナトリウム３重量部であり、この配合組成物を１００重量部としたとき、水の添加料は６０重量部である。
【００１０】
本発明補修剤は、補修箇所の既設色に合わせて着色が自由にできる。着色が必要な場合には、白セメント１００重量部に対し、色素を１０重量部以内で組成物作成時に配合する。
【００１１】
本発明補修剤は、例えば以下のように製造される。常温下においては、上記最適配合量で配合した粉体組成物１ｋｇを練り箱に入れ、水６００ｇを加えて手動撹拌器具により撹拌する。撹拌に際し、水は、まず半分の３００ｇを入れて５分間ほど撹拌する。その後、残りの水３００ｇを更に加え、乳状になるまで１０分〜２０分かけて良く混練する。プロペラ式撹拌機等で練る場合は、手動の２／３程度の時間でよい。屋外作業においては、気温の上昇や湿度の低下がある場合、粉体組成物の１０％以下であれば、水の分量を増加しても、その性能が劣化することはない。
【００１２】
本発明補修剤の施工にあたっては、補修箇所を良く清掃、洗浄して、亀裂の場合は割れ口を削る。補修が肌割れの場合はコテ塗り等で塗布し、亀裂の場合はヘラ等ですり込む。硬化時間は、４８時間程度であるが、完全硬化するには９日〜１４日間を要す。
【００１３】
本発明補修剤は、コンクリート構造物やモルタル構造物の亀裂、ひび割れ、ピンホールの補修、同構造物のあらゆる箇所の漏水、透水の補修、駐車場の車止めブロックの接着、タイル、アスタイルの目地止め等、広範囲に適用することができる。
【００１４】
【実施例】
以下に、実施例を用いて本発明を説明するが、本発明はその要旨を変更しない限り、この実施例に限定されるものではない。
【００１５】
「実施例１」
市販のコンクリート製桝（外寸２４０ｍｍ×２４０ｍｍ、内寸１７６ｍｍ×１７６ｍｍ、深さ１５０ｍｍ）にコンクリート板（３００ｍｍ×３００ｍｍ、厚さ１５０ｍｍ）を底板として上記により製造した本発明補修剤で水密接着し、生肌のコンクリート製容器を２個作成した。１つは、コンクリート板接着前に桝を縦二つ割りにしてその割り面同士を上記本発明補修剤により接着して本発明実施容器とし、他の１つは現状のままの対照容器とした。両容器に水３５００ｃｃ注水し、蒸発を防ぐための蓋をし、底板接着部分に漏水のないことを確認したうえで、９６時間後の残水量を計量した。対照容器は２８５０ｃｃ、本発明容器は２９００ｃｃで５０ｃｃほど多く残っており、縦割り接着部分や底板接着部分からの漏水のないことも確認された。
【００１６】
「実施例２」
本発明補修剤の強力な接着力と白色を活用して、駐車場の線引きに利用した。１日平均５００台の乗用車が出入りする大型スーパーマーケットの駐車場出口に、本発明補修剤で停止位置を表す「ＳＴＯＰ」の文字と停止線を示すラインを引いた。対照として、駐車場の線引きとして一般的に利用されている水溶性塗料「パーキングライン」（関西ペイント社製）で、同駐車場入口に同様の文字とラインを表示した。１年間経過後に、文字とラインの劣化度を目視で評価したところ、対照は「かすれ」や「消え」が目立ったのに対し、本発明補修剤ではそれが僅かであり、対照とは３倍程度の耐久性が確認された。
【００１７】
「実施例３」
築２５年経過した５階建て集合住宅（各階８世帯）の屋外共用廊下の５階部分と４階部分の廊下の主に排水溝に１００ヶ所近い亀裂が入り、３階の廊下には、雨天後の雨水の水滴が上階から大量に垂れる現象が起きていた。これら全ての亀裂を削り、本発明補修剤をヘラで丹念に埋め込み、養生した。補修後、１年間経過した状態の補修箇所を観察したが、漏水の兆候は全く見られなかった。
【００１８】
【発明の効果】
以上のように、本発明のコンクリート系補修剤によれば、水を加えて練るだけでよいので製造が容易であり、耐久性、接着性に優れ、地球環境の保全にも寄与することができる。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an improvement in a concrete-based repair agent that is most suitable for repairing cracks, hair racks, pinholes, skin cracks, and the like in concrete structures, mortar structures, and the like.
[0002]
[Prior art]
[Patent Document 1] JP-A-5-17545 [Patent Document 2] JP-A-8-127509 [0003]
Concrete structures and mortar structures are susceptible to cracks and skin cracks due to phenomena such as drying shrinkage and thermal expansion. For example, when a crack occurs, rainwater infiltrates inside and causes problems such as corrosion on reinforcing bars and the like. . As a repair agent in such a case, one having a composition of an epoxy resin or an acrylic resin has been conventionally developed. Among them, curable resin compositions described in Patent Literature 1 and Patent Literature 2 have been proposed as acrylic resins.
[0004]
[Problems to be solved by the invention]
However, although the curable resin composition has succeeded in improving the resin strength, it has been pointed out that in an environment under high temperature and high humidity, the adhesive strength is weakened and the durability becomes insufficient. I have. In addition, there is a concern that the resin composition may have some adverse effect on the global environment.
[0005]
An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a concrete-based repair agent which has excellent adhesive strength and durability, is easy to manufacture, and does not adversely affect the global environment.
[0006]
[Means for Solving the Problems]
The present inventors have conducted intensive studies in order to solve the above-described problems, and found that by adding water to a powder composition that is not a resin-based composition and kneading it, the adhesiveness, durability, and the global environment are excellent. Knowing that a gentle repair agent can be obtained, the present invention has been completed.
[0007]
That is, the present invention relates to 100 parts by weight of white cement, 1 to 5 parts by weight of silicone resin, 5 to 15 parts by weight of casein, 28 to 40 parts by weight of kaolin, 5 to 15 parts by weight of titanium oxide, and 1 to 5 parts by weight of sodium carbonate. It is a concrete repair agent obtained by mixing 50 to 70 parts by weight of water with respect to 100 parts by weight of a composition mixed in the ratio of parts by weight.
[0008]
The cement used in the present invention is preferably a white cement, but is not limited to white cement as long as it can be hardened by adding water. The amount of casein is preferably 5 to 15 parts by weight based on 100 parts by weight of white cement. If the amount is out of this range, the adhesive strength is reduced at least even if the amount is large. Further, kaolin is preferably 28 to 40 parts by weight based on 100 parts by weight of white cement. If the amount is less than 28 parts by weight, the composition is insufficiently cured and becomes brittle against vibration and torsion. On the other hand, if it exceeds 40 parts by weight, the hardness after curing becomes too high and the flexibility is impaired.
[0009]
The optimum amount of the concrete repair agent according to the present invention is 3 parts by weight of silicone resin, 10 parts by weight of casein, 33 parts by weight of kaolin, 10 parts by weight of titanium oxide, and 3 parts by weight of sodium carbonate based on 100 parts by weight of white cement. When the composition is 100 parts by weight, the water additive is 60 parts by weight.
[0010]
The repair agent of the present invention can be freely colored in accordance with the existing color at the repair site. When coloring is required, the pigment is added to the white cement in an amount of 10 parts by weight or less based on 100 parts by weight of the white cement when the composition is prepared.
[0011]
The repair agent of the present invention is produced, for example, as follows. At room temperature, 1 kg of the powder composition compounded in the above-mentioned optimum amount is put in a kneading box, 600 g of water is added, and the mixture is stirred with a manual stirring device. Upon stirring, 300 g of water is first added and stirred for about 5 minutes. Thereafter, 300 g of the remaining water is further added, and the mixture is kneaded well over 10 to 20 minutes until it becomes milky. In the case of kneading with a propeller type stirrer or the like, the time may be about 手動 of the manual operation. In outdoor work, when there is a rise in temperature or a decrease in humidity, if the amount of water is 10% or less of the powder composition, its performance does not deteriorate even if the amount of water is increased.
[0012]
When applying the repair agent of the present invention, the repaired portion is thoroughly cleaned and washed, and in the case of a crack, the crack is cut. If the repair is a skin crack, apply it with a trowel, etc. If it is a crack, rub it with a spatula. The curing time is about 48 hours, but it takes 9 to 14 days for complete curing.
[0013]
The repair agent of the present invention is used for repairing cracks and cracks in concrete structures and mortar structures, repairing pinholes, repairing water leaks in all parts of the structure, repairing water permeability, bonding car stop blocks in parking lots, tiles, asylum joints. It can be applied to a wide range such as stopping.
[0014]
【Example】
Hereinafter, the present invention will be described with reference to examples, but the present invention is not limited to these examples unless the gist is changed.
[0015]
"Example 1"
A concrete plate (300 mm × 300 mm, thickness 150 mm) was bonded to a commercially available concrete basin (external size 240 mm × 240 mm, internal size 176 mm × 176 mm, depth 150 mm) with the repair agent of the present invention prepared above as a bottom plate, Two fresh-skinned concrete containers were prepared. One was to divide the cell into two pieces vertically before the concrete plate was bonded, and the split surfaces were bonded to each other with the above-mentioned repair agent of the present invention to obtain a container for carrying out the present invention, and the other was used as a control container as it was. 3500 cc of water was poured into both containers, a lid was placed to prevent evaporation, and after confirming that there was no water leakage at the bottom plate adhesion portion, the remaining water amount after 96 hours was measured. The control container was 2850 cc, and the container of the present invention was 2900 cc, and about 50 cc remained, and it was also confirmed that there was no water leakage from the vertically divided adhesive portion and the bottom plate adhesive portion.
[0016]
"Example 2"
Utilizing the strong adhesive force and white color of the repair agent of the present invention, the repair agent was used for drawing a parking lot. At the parking lot exit of a large supermarket where an average of 500 passenger cars enter and exit each day, a line indicating a stop line and a stop line is drawn with the repair agent of the present invention. As a control, similar characters and lines were displayed at the entrance of the parking lot using a water-soluble paint “Parking Line” (manufactured by Kansai Paint Co., Ltd.), which is generally used as a parking lot drawing. After one year, the degree of deterioration of characters and lines was visually evaluated. As a result, the control showed "fading" and "disappearance", whereas the repairing agent of the present invention showed a slight increase, and the contrast was 3 times that of the control. A degree of durability was confirmed.
[0017]
"Example 3"
Nearly 100 cracks have been formed in the drainage ditch of the 5th and 4th floor corridors of the outdoor common corridor of a 5-story multi-family building (8 households on each floor) that has been built 25 years ago. There was a phenomenon in which a large amount of drops of rainwater later dripped from the upper floor. All of these cracks were cut and the repair agent of the present invention was carefully embedded with a spatula and cured. After the repair, the repaired part after one year was observed, but no sign of water leakage was found.
[0018]
【The invention's effect】
As described above, according to the concrete repair agent of the present invention, since it is only necessary to knead by adding water, the production is easy, the durability is excellent, the adhesiveness is excellent, and it can contribute to the preservation of the global environment. .
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003029132A JP4128884B2 (en) | 2003-02-06 | 2003-02-06 | Concrete repair agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003029132A JP4128884B2 (en) | 2003-02-06 | 2003-02-06 | Concrete repair agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2004238913A true JP2004238913A (en) | 2004-08-26 |
| JP4128884B2 JP4128884B2 (en) | 2008-07-30 |
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ID=32956392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2003029132A Expired - Lifetime JP4128884B2 (en) | 2003-02-06 | 2003-02-06 | Concrete repair agent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4128884B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101336673B1 (en) | 2012-03-21 | 2013-12-04 | 김용석 | Concrete repair material and mending method using concrete |
| CN110924691A (en) * | 2019-11-28 | 2020-03-27 | 广州国屹建筑工程有限公司 | Environment-friendly building construction method |
-
2003
- 2003-02-06 JP JP2003029132A patent/JP4128884B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101336673B1 (en) | 2012-03-21 | 2013-12-04 | 김용석 | Concrete repair material and mending method using concrete |
| CN110924691A (en) * | 2019-11-28 | 2020-03-27 | 广州国屹建筑工程有限公司 | Environment-friendly building construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4128884B2 (en) | 2008-07-30 |
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