JPH0470465B2 - - Google Patents
Info
- Publication number
- JPH0470465B2 JPH0470465B2 JP60040820A JP4082085A JPH0470465B2 JP H0470465 B2 JPH0470465 B2 JP H0470465B2 JP 60040820 A JP60040820 A JP 60040820A JP 4082085 A JP4082085 A JP 4082085A JP H0470465 B2 JPH0470465 B2 JP H0470465B2
- Authority
- JP
- Japan
- Prior art keywords
- finishing layer
- elastic mortar
- cracks
- building
- resin
- 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
- Working Measures On Existing Buildindgs (AREA)
Description
【発明の詳細な説明】
＜産業上の利用分野＞
本発明は、鉄筋・鉄骨建物等の外壁の補修方法
の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an improvement in a method for repairing outer walls of reinforced steel/steel-framed buildings, etc.
＜従来の技術＞
鉄筋・鉄骨等の建物では、その外壁をモルタル
又はタイル等によつて仕上げるが、この仕上層は
期間経過と共に、いわゆる経年劣化を生じて、仕
上層にひび割れができたり、駆体より浮き上がつ
て駆体との間に空隙部を生ずるが、これをそのま
ま放置すると駆体の劣化を早めるだけでなく、仕
上層が駆体から剥離して落下するなどの事故を招
く虞れがある。またひび割れから水分・空気・ガ
ス等が進入して、コンクリートの中性化、鉄筋・
鉄骨等が腐食するなどして建物の耐久性を損う。<Conventional technology> The outer walls of buildings made of reinforced steel and steel frames are finished with mortar or tiles, but over time, this finishing layer deteriorates over time, causing cracks to form in the finishing layer and damage to the finish layer. It floats up from the body and creates a gap between it and the substrate, but if this is left as it is, it will not only accelerate the deterioration of the substrate but also lead to accidents such as the finishing layer peeling off from the substrate and falling. There is. In addition, moisture, air, gas, etc. can enter through cracks, neutralizing concrete, reinforcing steel, etc.
Steel frames etc. corrode, impairing the durability of the building.
このため、仕上層の補修工事を行うが、従来の
補修方法は、第３図に示すように駆体１と浮き上
がつた仕上層２との間に生じた空隙部３に、エポ
キシ樹脂４又はスラリー状のポリマーセメントを
注入して空隙部３を埋めると同時に、エポキシ樹
脂４の接着力によつて仕上層２を駆体１に固着す
る。またひび割れ５に対しては、同じくエポキシ
樹脂４又はポリマーセメントをひび割れ５上に塗
付して、これをかくすようにしていた。 For this reason, repair work is carried out on the finishing layer, but in the conventional repair method, as shown in FIG. Alternatively, a polymer cement in the form of a slurry is injected to fill the void 3, and at the same time, the finishing layer 2 is fixed to the substrate 1 by the adhesive force of the epoxy resin 4. Furthermore, as for the cracks 5, epoxy resin 4 or polymer cement was similarly applied on the cracks 5 to hide them.
そして、この従来工法による補修により、仕上
層２は駆体１と接着されて剥落の虞れは一旦は解
消され、ひび割れ５もかくされて、建物は一時は
美しく仕上がる。 By repairing using this conventional construction method, the finishing layer 2 is bonded to the substrate 1, the fear of peeling is temporarily eliminated, the cracks 5 are also hidden, and the building is temporarily finished beautifully.
＜発明が解決しようとする問題点＞
しかし、更に期間がたつと、再び仕上層２にひ
び割れ５が入り、浮き上がつてくる。これは、つ
ぎの理由によると考えられる。すなわち建物は日
射や気温の変化あるいは振動によつて僅かではあ
るが、膨張・収縮している。そして、その伸縮率
は材質の相違によつて当然ちがつてくるため、鉄
筋コンクリートの駆体１とモルタルの仕上層２で
は相違する。<Problems to be Solved by the Invention> However, as time passes, cracks 5 appear in the finishing layer 2 again and the finishing layer 2 begins to lift. This is considered to be due to the following reason. In other words, buildings expand and contract, albeit slightly, due to changes in sunlight, temperature, and vibrations. Since the expansion/contraction rate naturally differs depending on the material, it is different between the reinforced concrete base 1 and the mortar finishing layer 2.
しかるに上記の従来方法では、仕上層２をエポ
キシ樹脂４によつて駆体１へ完全に接着してしま
うので、両者はそれぞれ固有の伸縮率によつて自
由に膨張・収縮することができなくなる。 However, in the above-mentioned conventional method, the finishing layer 2 is completely adhered to the substrate 1 by the epoxy resin 4, so that both cannot freely expand and contract according to their own respective expansion and contraction ratios.
このため、表面にあつて外気の影響を大きくう
ける仕上層２は、内部の駆体１に比して当然大き
く伸縮するが、上記のようにエポキシ樹脂４によ
つて駆体１へ完全に接着されると、自由に伸縮で
きなくなる。このため、ひび割れ５という現象と
なつて現われるのである。また膨張力が接着力よ
り大きいと、仕上層２は再び駆体１より剥離して
浮き上がる。 Therefore, the finishing layer 2, which is on the surface and is greatly affected by the outside air, naturally expands and contracts more than the inner substrate 1, but as mentioned above, it is completely adhered to the substrate 1 by the epoxy resin 4. If it is, it will no longer be able to expand and contract freely. For this reason, a phenomenon called cracks 5 appears. If the expansion force is greater than the adhesive force, the finishing layer 2 will again separate from the substrate 1 and rise up.
＜解決するための手段＞
本発明は上記の点に着目して、仕上層を駆体へ
接着する場合、接着剤として接着後も大きな引張
伸度があつて、仕上層独自の伸縮をある程度許容
する弾性モルタルを使うことによつて、補修後再
び仕上層が浮き上つたり、ひび割れしたり従来工
法の欠点を伴わない補修方法を提供しようとする
ものである。<Means for Solving> The present invention focuses on the above points, and when adhering the finishing layer to the substrate, the adhesive has a large tensile elongation even after adhesion, allowing the finishing layer to expand and contract to some extent. By using elastic mortar, the present invention aims to provide a repair method that does not cause the finishing layer to lift up or crack again after repair, which does not involve the disadvantages of conventional methods.
実施例
以下に本発明の実施例を図面に基いて説明す
る。第１図に示すように駆体１１より仕上層１２
が浮き上つて、両者間に空隙部１３が生じ、且つ
仕上層１２にひび割れ１４ができたときは、まず
空隙部１３に大きな引張伸度を有する弾性モルタ
ルａを注入する。弾性モルタルａは、つぎのよう
に構成する。すなわちアクリル酸エステル共連合
樹脂を主成分とし、該樹脂の濃度50％のものに、
ポルトランドセメントと硅砂、硅石粉などの骨材
を、重量比で１：１：３の割合で混合する。そし
て、この混合物に４％までの水を加えて希望する
粘度に調整したものである。Examples Examples of the present invention will be described below based on the drawings. As shown in FIG.
is lifted up, creating a void 13 between them, and cracks 14 are formed in the finishing layer 12, first, an elastic mortar a having a large tensile elongation is injected into the void 13. The elastic mortar a is constructed as follows. That is, the main component is an acrylic acid ester cooperative resin, and the concentration of the resin is 50%,
Portland cement and aggregates such as silica sand and silica powder are mixed in a weight ratio of 1:1:3. Then, up to 4% water was added to this mixture to adjust the desired viscosity.
上記の弾性モルタルａを塗布した皮膜は、膜厚
1.0mmのもので、つぎの引張強度と引張伸度を有
する。 The film coated with the above elastic mortar a has a film thickness of
It is 1.0mm and has the following tensile strength and tensile elongation.
引張強度（温度20℃）：17Kgｆ／cm （温度−10℃）：42Kgｆ／cm 引張伸度（温度20℃）：350％ （温度−10℃）：170％ −10℃という低温度での伸びが非常によい。 Tensile strength (temperature 20℃): 17Kgf/cm (Temperature -10℃): 42Kgf/cm Tensile elongation (temperature 20℃): 350% (Temperature -10℃): 170% It has very good elongation at temperatures as low as -10℃.
このような弾性モルタルａを空隙部１３内に注
入して、空隙部１３を充填すると、空隙部１３が
埋まると同時にこの弾性モルタルａの接着力によ
つて、仕上層１２は駆体１１に接着される。 When such an elastic mortar a is injected into the cavity 13 to fill the cavity 13, the cavity 13 is filled and at the same time, the finishing layer 12 is adhered to the substrate 11 by the adhesive force of the elastic mortar a. be done.
しかし、この弾性モルタルａは、上記のような
大きな引張伸度をもつので、例えば外気温が変化
した場合、仕上層１２は弾性モルタルａの引張伸
度内で、駆体１１と別に独立して伸縮できる。こ
のため、仕上層１２は駆体１１との接着状態を保
ちながら、剥離することなしにある程度伸縮でき
るのである。 However, since this elastic mortar a has a large tensile elongation as described above, for example, when the outside temperature changes, the finishing layer 12 is formed separately from the base body 11 within the tensile elongation of the elastic mortar a. Can be expanded and contracted. For this reason, the finishing layer 12 can be expanded and contracted to some extent while maintaining its adhesive state with the substrate 11 without peeling off.
また弾性を有するピン（図示せず）を仕上層１
２から駆体１１に通して、仕上層１２を駆体１１
に接着してもよい。但しこの場合のピンは、仕上
層１２が伸縮するとき、それに応じて撓みうる弾
性を有することが必要である。 In addition, an elastic pin (not shown) is attached to the finishing layer 1.
2 through the precursor 11 to pass the finishing layer 12 through the precursor 11.
It may also be glued to. However, the pin in this case needs to have elasticity that allows it to bend in response to the expansion and contraction of the finishing layer 12.
ひび割れ１４を補修するには、まずひび割れ１
４に沿つて幅３〜５mmのスリツト１５を、第２図
のように設けて、仕上層１２を左右に分断する。
そして、このスリツト１５が、仕上層１２が膨張
したときの逃け部となるので、膨張時に仕上層１
２が浮き上がるのを防止する。 To repair crack 14, first repair crack 1.
4, a slit 15 having a width of 3 to 5 mm is provided as shown in FIG. 2 to divide the finishing layer 12 into left and right sides.
This slit 15 becomes a relief part when the finishing layer 12 expands, so when the finishing layer 12 expands, the finishing layer 12
2 to prevent it from floating up.
スリツト１５には、これまた大きな引張伸度を
もつ弾性モルタルｂを充填して目立たないように
する。弾性モルタルｂは、前記のアルリル酸エス
テル共重合樹脂に、ポルトランドセメントを重量
比で１：１に混合してつくる。 The slit 15 is also filled with elastic mortar b having a large tensile elongation to make it less noticeable. Elastic mortar b is prepared by mixing the aforementioned allylic acid ester copolymer resin with Portland cement at a weight ratio of 1:1.
＜発明の効果＞
本発明は以上説明したように、大きな引張伸度
を有する弾性モルタルによつて、駆体と仕上層間
に生じた空隙部を埋めるので、外気温等が変化し
たとき、仕上層は駆体との接着状態を保ちなが
ら、弾性モルタルａの引張伸度内で自由に伸縮で
きる。このため従来工法のように、補修後再び簡
単に仕上層が浮き上がつたり、ひび割れしない。<Effects of the Invention> As explained above, the present invention uses elastic mortar with a large tensile elongation to fill the voids created between the base material and the finishing layer, so that when the outside temperature etc. changes, the finishing layer can freely expand and contract within the tensile elongation of the elastic mortar a while maintaining its adhesive state with the base material. For this reason, the finish layer does not easily lift up or crack again after repair, unlike in conventional construction methods.
また、特にひび割れに対しては、これに沿つて
スリツトを設けるため、このスリツトが仕上層の
膨張時の逃け部となるので、一層ひび割れが生じ
にくくなる効果を有する。 In addition, especially for cracks, since the slits are provided along the cracks, the slits serve as escape areas when the finishing layer expands, and this has the effect of making it even more difficult for cracks to occur.
なお、実施例では仕上層としてモルタル仕上げ
について説明したが、タイル仕上げについても、
同様の補修方法が可能である。 In addition, although mortar finish was explained as a finishing layer in the example, tile finish is also applicable.
Similar repair methods are possible.
第１図は本発明による補修方法を示す説明用断
面図、第２図はひび割れに対する補修方法を示す
説明用断面図、第３図は従来の補修方法を示す説
明用断面図である。
１１……駆体、１２……仕上層、１３……空隙
部、１４……ひび割れ、１５……スリツト、ａ…
…弾性モルタル、ｂ……弾性モルタル。
FIG. 1 is an explanatory sectional view showing a repair method according to the present invention, FIG. 2 is an explanatory sectional view showing a crack repair method, and FIG. 3 is an explanatory sectional view showing a conventional repair method. DESCRIPTION OF SYMBOLS 11... Precursor, 12... Finishing layer, 13... Void, 14... Crack, 15... Slit, a...
...Elastic mortar, b...Elastic mortar.
Claims (1)
との間に生じた空隙部に、アクリル酸エステル共
重合樹脂を主成分とし、該樹脂の濃度50％のもの
にポルトランドセメントと硅砂、硅石粉などの骨
材を、重量比で１：１：３の割合で混合し、これ
に４％までの水を加えて希望する粘度に調整した
弾性モルタルａを充填して仕上層を駆体に接着す
ると共に、仕上層に生じたひび割れに沿つてスリ
ツトを設け、このスリツトに前記のアクリル酸エ
ステル共重合樹脂に、ポルトランドセメントを重
量比で１：１に混合してなる弾性モルタルｂを充
填することを特徴とする建物外壁の仕上層の補修
方法。1. Into the void created between the building material and the finishing layer due to the lifting of the finishing layer of the building's outer wall, a resin containing an acrylic acid ester copolymer resin as the main component, with a concentration of 50% of the resin, and Portland cement, silica sand, and silica powder are added. Aggregates such as are mixed in a ratio of 1:1:3 by weight, and filled with elastic mortar A whose viscosity is adjusted to the desired level by adding up to 4% water to adhere the finishing layer to the base material. At the same time, slits are provided along the cracks that have occurred in the finishing layer, and the slits are filled with elastic mortar B made by mixing the acrylic ester copolymer resin with Portland cement at a weight ratio of 1:1. A method for repairing the finishing layer of a building's outer wall, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4082085A JPS61200272A (en) | 1985-02-28 | 1985-02-28 | Repairing of finished layer of building outer wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4082085A JPS61200272A (en) | 1985-02-28 | 1985-02-28 | Repairing of finished layer of building outer wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61200272A JPS61200272A (en) | 1986-09-04 |
| JPH0470465B2 true JPH0470465B2 (en) | 1992-11-11 |
Family
ID=12591293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4082085A Granted JPS61200272A (en) | 1985-02-28 | 1985-02-28 | Repairing of finished layer of building outer wall |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61200272A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001295476A (en) * | 2000-04-12 | 2001-10-26 | Yoshiyuki Ogushi | Reinforcement method of concrete frame |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5225426A (en) * | 1975-08-20 | 1977-02-25 | Osaka Bosui Kensetsusha Kk | Method of repairing cracks developed in concrete construction |
| JPS5744006U (en) * | 1980-08-26 | 1982-03-10 | ||
| JPS583111A (en) * | 1981-06-30 | 1983-01-08 | Fujitsu Ltd | Diagnostic system for magnetic recorder |
| JPS5876656A (en) * | 1981-10-30 | 1983-05-09 | 積水化学工業株式会社 | Repairing of cement structure |
-
1985
- 1985-02-28 JP JP4082085A patent/JPS61200272A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61200272A (en) | 1986-09-04 |
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