JPH03164458A - Repair material for cracked and floated part of concrete structure - Google Patents
Repair material for cracked and floated part of concrete structureInfo
- Publication number
- JPH03164458A JPH03164458A JP30068789A JP30068789A JPH03164458A JP H03164458 A JPH03164458 A JP H03164458A JP 30068789 A JP30068789 A JP 30068789A JP 30068789 A JP30068789 A JP 30068789A JP H03164458 A JPH03164458 A JP H03164458A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- repair material
- repair
- inorg
- concrete structure
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 82
- 230000008439 repair process Effects 0.000 title claims abstract description 53
- 239000000843 powder Substances 0.000 claims abstract description 20
- 239000000839 emulsion Substances 0.000 claims abstract description 13
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 10
- 239000000057 synthetic resin Substances 0.000 claims abstract description 10
- 239000007787 solid Substances 0.000 claims abstract description 8
- 239000004094 surface-active agent Substances 0.000 claims abstract description 6
- 238000007667 floating Methods 0.000 claims description 10
- 239000004568 cement Substances 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 11
- 230000001070 adhesive effect Effects 0.000 abstract description 4
- 238000012856 packing Methods 0.000 abstract 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 11
- 235000012239 silicon dioxide Nutrition 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 230000008859 change Effects 0.000 description 6
- 239000011521 glass Substances 0.000 description 4
- 238000000691 measurement method Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000002736 nonionic surfactant Substances 0.000 description 3
- 239000003945 anionic surfactant Substances 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000005357 flat glass Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052910 alkali metal silicate Inorganic materials 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- -1 polyoxyethylene nonyl phenyl ether Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 125000005372 silanol group Chemical group 0.000 description 1
- 239000005368 silicate glass Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、コンクリート構造物のひび割れ、および浮き
部分の補修材に対するものである。更に詳しく述べるな
らば、本発明は、コンクリート構造物に発生するひび割
れ部分および浮き部分などのような微細な空隙部を充填
して、水の侵入を防止し、それによって、コンクリート
構造物の水密性および防水性を回復するのに有用な補修
材に関するものである．
〔従来の技術・発明が解決しようとする課題〕一般にコ
ンクリート構造物は耐久性にすぐれていると信じられて
きたが、しかし、ある環境条件下においては、ひび割れ
や浮きと称される欠点が発生し、その内部の鉄筋材の腐
食や、その表面上のモルタルの剥離を生じ、劣化が比較
的急速に進行することが知られている。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention is directed to a repair material for cracks and floating parts of concrete structures. More specifically, the present invention prevents water from entering by filling minute voids such as cracks and floating parts that occur in concrete structures, thereby improving the watertightness of concrete structures. and repair materials useful for restoring waterproofness. [Problems to be solved by conventional technology/inventions] Concrete structures are generally believed to have excellent durability, but under certain environmental conditions, defects called cracks and floating occur. However, it is known that deterioration progresses relatively rapidly, causing corrosion of the reinforcing steel inside the steel and peeling of the mortar on its surface.
従来、コンクリート構造物のひび割れおよび浮き部分の
補修方法としては、近年ポリウレタン樹脂、又はエボキ
シ樹脂などの有機重合体材料を充填する方法が用いられ
ている。しかし、このような補修材料は高価であり、ま
た注入された補修材料とコンクリートとの付着性につい
て十分な信頼性がないなどの問題があった。Conventionally, as a method for repairing cracks and floating parts of concrete structures, a method of filling organic polymer materials such as polyurethane resin or epoxy resin has recently been used. However, such repair materials are expensive and have problems such as insufficient reliability in adhesion between the injected repair material and concrete.
本発明はコンクリート構造物に用いられてきた従来の補
修材の上記問題点を解消し、コンクリート構造物に対す
る接着性が良好で、充填効果が高く、耐久性にすぐれ、
かつ安価な、コンクリート構造物のひび割れおよび浮き
部分の補修材を提供しようとするものである。The present invention solves the above-mentioned problems of conventional repair materials used for concrete structures, and has good adhesion to concrete structures, high filling effect, and excellent durability.
The present invention aims to provide an inexpensive repair material for cracked and floating parts of concrete structures.
本発明のコンクリート構造物のひび割れおよび浮き部分
の補修材は無機セメント質材料と、上記セメント質材料
の重量に対し、１０〜３０重量％の、非晶珪酸質材料か
らなり、７０００ｃｆｆｌ／ ｇ以上の粉末度を有する
極小微細粉末と、上記無機セメント質材料の重量に対し
、１０〜２５重量％（固形分）の皮膜形成性合成樹脂エ
マルジョンと、を含むことを特徴とするものである。The repair material for cracked and floating parts of concrete structures of the present invention is composed of an inorganic cementitious material and an amorphous siliceous material in an amount of 10 to 30% by weight based on the weight of the cementitious material, and has an amount of 7000 cffl/g or more. It is characterized by containing extremely fine powder having fineness and a film-forming synthetic resin emulsion of 10 to 25% by weight (solid content) based on the weight of the inorganic cementitious material.
本発明の補修材は、前記無機セメント質材料の重量に対
し、０．ｌ重量％以下の界面活性剤、例えばアニオン又
は非イオン界面活性剤を含むことができる。The repair material of the present invention has a weight of 0.0% relative to the weight of the inorganic cementitious material. Up to 1% by weight of surfactants, such as anionic or nonionic surfactants, can be included.
本発明に用いられる無機セメント質材料等としては、例
えば通常のボルトランドセメント、コロイドセメント、
或はその他の無機セメントを用いることができる。本発
明の補修材において無機セメント質材料はコンクリート
構造物、例えば建築物基部内又は建築物基部と、化粧外
壁材との間で、それぞれに高い親和性と接着性とを有し
、これに配合される合成樹脂エマルジョンとともにコン
クリート構造物に対して高い接着性を示すことができる
。Examples of inorganic cementitious materials used in the present invention include ordinary boltland cement, colloidal cement,
Alternatively, other inorganic cements can be used. In the repair material of the present invention, the inorganic cementitious material has high affinity and adhesion between the concrete structure, for example, within the base of a building or between the base of the building and the decorative exterior wall material, and is blended therein. It can exhibit high adhesion to concrete structures together with synthetic resin emulsions.
本発明に用いられる非晶珪酸質極小微細粉末としては仮
ガラス、或はくずガラスなどを、粉末度７０００ｃ＋ａ
／ ｇ以上に微細粉末化したもの、好ましくは７，０
００〜１０，ＱＯＯｃｍ２／ ｇの粉末度を有するもの
を使用することができる。この粉末の粉末度が７０００
ｃｔＪ／ｇ未満のときは、この非晶珪酸質極小微細粉末
の表面活性が不十分となり、無機セメント質材料や、合
戒樹脂エマルジョンとの親和性が不十分となって、得ら
れる補修材の性能が不十分となる．また、その粉末度が
１０， ＯＯＯａａ ／ ｇより高くなると、粉末が凝
集しやすくなり、補修材中における均一分散性が不十分
となることがある。As the amorphous silicic acid ultrafine powder used in the present invention, temporary glass or scrap glass is used, and the powder degree is 7000c+a.
/g or more, preferably 7,0
A material having a fineness of 00 to 10,000 cm2/g can be used. The fineness of this powder is 7000
When it is less than ctJ/g, the surface activity of this amorphous silicic acid microfine powder is insufficient, and the affinity with inorganic cementitious materials and the resin emulsion is insufficient, resulting in poor repair of the resulting repair material. Performance will be insufficient. In addition, if the fineness is higher than 10.00aa/g, the powder tends to aggregate, and the uniform dispersibility in the repair material may become insufficient.
また、非晶珪酸質微細粉末の添加量は、無機セメント質
材料の重量に対し、１０〜３０％の範囲にあり、１５〜
２５％であることがより好ましい。この微細粉末の添加
量が１０％未満であると、非晶珪酸質材料の無機セメン
ト質材料中への熔解混和量が不十分となり、補修材の緻
密な硬化体を形成することが困難となり、また、その添
加量が３０％より多くなると、補修材硬化の機械的強度
が不十分となり、その耐久性が低下する。Further, the amount of the amorphous silicic acid fine powder added is in the range of 10 to 30%, and 15 to 30%, based on the weight of the inorganic cementitious material.
More preferably, it is 25%. If the amount of this fine powder added is less than 10%, the amount of melting and mixing of the amorphous siliceous material into the inorganic cementitious material will be insufficient, making it difficult to form a dense hardened body of the repair material. Furthermore, if the amount added exceeds 30%, the mechanical strength of the curing repair material will be insufficient and its durability will decrease.
本発明に用いられる非晶珪酸質材料は安価なものである
が、その使用によって、緻密性が高く、機械的強度にす
ぐれ、かつ耐久性のすぐれた補修材を得ることができる
。Although the amorphous silicic acid material used in the present invention is inexpensive, by using it, a repair material with high density, excellent mechanical strength, and excellent durability can be obtained.
本発明の補修材には皮膜形成性合戒樹脂エマルジヲンが
無機セメント質材料の重量に対し、１０〜２５重景％（
固形分）、好ましくは１３〜１８重量％（固形分）の割
合が含まれている。皮膜形成性合成樹脂エマルジョンは
、補修材のコンクリート構造物に対する接着強度を向上
させ、かつ無機セメント質材−料及び非晶珪酸質微細粉
末を強固に結着し、補修効果を著しく向上させるもので
ある。このような合成樹脂エマルジゴンとしては、例え
ばエチレンー酢酸ビニル共重合体、合或ゴム系共重合体
（例えば、ＳＢＲ ， ＮＢＲ ，クロロブレンなど）
およびアクリルエステル系共重合体、並びにこれらの一
部として他の重合可能な単量体を共重合させて変性した
変性共重合体、などの少なくとも１種を含む水性エマル
ジョンを用いることができる。The repair material of the present invention contains a film-forming resin emulsion in an amount of 10 to 25% by weight based on the weight of the inorganic cementitious material.
solids content), preferably 13 to 18% by weight (solids content). The film-forming synthetic resin emulsion improves the adhesive strength of the repair material to concrete structures, and also strongly binds the inorganic cementitious material and amorphous silicic acid fine powder, significantly improving the repair effect. be. Examples of such synthetic resin emulsions include ethylene-vinyl acetate copolymers, synthetic rubber copolymers (e.g., SBR, NBR, chlorobrene, etc.)
An aqueous emulsion containing at least one of acrylic ester copolymers, and modified copolymers obtained by copolymerizing other polymerizable monomers as part of these copolymers can be used.
又、上記以外のものであっても、セメント混和用合成樹
脂エマルジゴンを用いることができる。本発明の補修材
中の合成樹脂エマルジョンの含有量が１０重景％（固形
分）未満となると、得られる補修材のコンクリート構造
物に対する接着力および含有戒分に対する結着性が不十
分となって、補修部分の機械的強度および耐久性が不十
分となり、また、それが２５重量％（固形分）より高く
なると、補修材の粘度が過度に大きくなり、注入操作が
困難になる。Moreover, even if it is other than the above, synthetic resin emuldigon for cement mixing can be used. If the content of the synthetic resin emulsion in the repair material of the present invention is less than 10% (solid content), the resulting repair material will have insufficient adhesion to concrete structures and binding properties to the contained substances. Therefore, the mechanical strength and durability of the repaired area will be insufficient, and if it exceeds 25% by weight (solid content), the viscosity of the repair material will become excessively large, making injection operations difficult.
本発明に用いられる界面活性剤は、好ましくは、非イオ
ン界面活性剤、例えばポリオキシエチレンノニルフエニ
ルエーテルなど、およびアニオン界面活性剤、例えばア
ルキルナフタレンスルホン酸ナトリウムなど、が用いら
れる。界面活性剤の含有量は、無機セメント質材料の重
量に対し、０．１重量％以下、好ましくは０．０７重量
％以下で用いられ、それによって、補修材に含まれる粉
末と、混和液との混和工程における表面張力を低下させ
て、粉末の分散効果を向上させ、かつ補修操作における
補修材の浸透効果を向上させることができる。The surfactants used in the present invention are preferably nonionic surfactants such as polyoxyethylene nonyl phenyl ether, and anionic surfactants such as sodium alkylnaphthalene sulfonate. The content of the surfactant is 0.1% by weight or less, preferably 0.07% by weight or less based on the weight of the inorganic cementitious material, so that the powder contained in the repair material and the mixed liquid are By lowering the surface tension in the mixing step, it is possible to improve the dispersion effect of the powder and the penetration effect of the repair material in the repair operation.
本発明の補修材を適量の水で混和し、得られるペースト
状体を、コンクリート構造物のひび割れ部分や浮き部分
に注入すると容易に浸透して硬化し、コンクリート構造
物のすぐれた水密性や防水性を回復させることができる
．
本発明の補修材の作用機構については下記のように考え
られる．
一般に仮ガラスなどの材料は化学的に安定であると信じ
られているが、その微細粉末は、極めて大きな比表面積
を有しており、かつ破砕表面のシラノール基などが高い
反応活性を示す。このため、非晶珪酸質粉末の表面は、
無機セメント質材料および水との混練時に生成する強ア
ルカリ溶液と反応し、非晶珪酸質粉末中のアルカリ成分
や珪酸成分が混合液中に溶出する。この溶出成分はコン
クリート構造物（セメント硬化体）の空隙を通って内部
に浸透し、セメント硬化体中の水和物、特に水酸化カル
シウムなどと反応し、ゲル状、または結晶性物質を生成
し、これらの生成物によって硬化体中の微細な空隙を充
填し、それによってコンクリート構造物の水の浸透に対
する抵抗性を向上させ、かつ、コンクリート構造物の強
度を増進することができる．更に、非晶珪酸質粉末粒子
が極めて微細であるので、この微細粒子がコンクリート
構造物中の微細毛細管状空隙を充填閉塞することができ
、それによって、コンクリート構造物の耐水性を一層向
上させることができる。When the repair material of the present invention is mixed with an appropriate amount of water and the resulting paste is injected into cracked or floating areas of a concrete structure, it easily penetrates and hardens, improving the watertightness and waterproofing of concrete structures. It is possible to restore sexuality. The mechanism of action of the repair material of the present invention can be considered as follows. Although materials such as temporary glass are generally believed to be chemically stable, their fine powders have an extremely large specific surface area, and silanol groups on the crushed surface exhibit high reactivity. Therefore, the surface of the amorphous silicic acid powder is
It reacts with a strong alkaline solution generated when kneading the inorganic cementitious material and water, and the alkali components and silicic acid components in the amorphous silicic acid powder are eluted into the mixed solution. This eluted component penetrates into the interior of the concrete structure (hardened cement) through the pores, reacts with hydrates in the hardened cement, especially calcium hydroxide, and produces gel-like or crystalline substances. , these products can fill the fine voids in the hardened body, thereby improving the resistance of concrete structures to water penetration and increasing the strength of concrete structures. Furthermore, since the amorphous siliceous powder particles are extremely fine, the fine particles can fill and close the fine capillary voids in the concrete structure, thereby further improving the water resistance of the concrete structure. Can be done.
本発明の補修材において、それが界面活性剤を含有する
場合は、補修剤ペースト中の非晶珪酸賞微細粉末の均一
分散が向上し、かつ、補修材ぺ一ストのコンクリート構
造物空隙中への浸透性を向上させることができる。In the repair material of the present invention, when it contains a surfactant, the uniform dispersion of the amorphous silicic acid fine powder in the repair agent paste is improved, and the repair material paste is dispersed into the voids of the concrete structure. can improve the permeability of
更に、本発明の補修材は、すぐれた機械的強度と接着性
と、止水効果を有する耐水性充填層を、コンクリート構
造物のひび割れ部分および浮き部分に形成することがで
きる。Further, the repair material of the present invention can form a water-resistant filling layer having excellent mechanical strength, adhesiveness, and water-stopping effect in cracked and floating parts of a concrete structure.
本発明を下記実施例により更に説明する。 The invention will be further illustrated by the following examples.
１〜３ および １〜３
実施例１〜３および比較例１〜２の各々において、板ガ
ラス（組戒：ケイ酸アルカリガラス）を粉砕し、７００
０ｃｄ／ ｇの粉末度を有する非晶珪酸質微細粉末を製
造し、この非晶珪酸質微細粉末、無機セメント（ボルト
ランドセメント）、アクリル樹脂エマルジョン（商標：
ペトロック１５０、旭化或社製、固形分濃度：４５重量
％）およびノニオン界面活性剤、商標：ＮＶ１０８、竹
本油脂社製）を、第１表記載の組或で均一に配合して、
補修材を調製し、この補修材に第１表記載の量の水を混
合して補修材ペーストを調製した。1 to 3 and 1 to 3 In each of Examples 1 to 3 and Comparative Examples 1 to 2, plate glass (composition: alkali silicate glass) was crushed and
Amorphous silicic acid fine powder with a fineness of 0 cd/g is produced, and this amorphous silicic acid fine powder, inorganic cement (Boltland Cement), and acrylic resin emulsion (trademark:
Petroc 150, manufactured by Asahi Kaoru Co., Ltd., solid content concentration: 45% by weight) and nonionic surfactant, trademark: NV108, manufactured by Takemoto Yushi Co., Ltd.) were uniformly blended in the composition shown in Table 1,
A repair material was prepared, and water in the amount shown in Table 1 was mixed with the repair material to prepare a repair material paste.
また、比較例３において市販されているセメントを補修
材を用いて、上記と同様に補修材ペーストを調製した。Further, in Comparative Example 3, a repair material paste was prepared in the same manner as above using commercially available cement as a repair material.
これらの補修材の保水係数、付着強さ、吸水率、曲げ強
さ（標準養生、温冷繰返し）、長さ変化率（１〜４週間
）および注入性テストを行った。その結果を第１表に示
す．
上記各テストは下記方法によって行った。These repair materials were tested for water retention coefficient, adhesion strength, water absorption rate, bending strength (standard curing, repeated heating and cooling), length change rate (1 to 4 weeks), and injectability. The results are shown in Table 1. Each of the above tests was conducted by the following method.
保水係数：住宅都市整備公団品質基準、保水係数測定法
による．
付着強さ：住宅都市整備公団品質基準、付着強さ測定法
による。Water retention coefficient: According to the Housing and Urban Development Corporation quality standards, water retention coefficient measurement method. Adhesive strength: Based on the Housing and Urban Development Corporation quality standards and adhesive strength measurement method.
吸水率 ； ＪＩＳ Ａ ６２０３による．曲げ強さ：
ＪＩＳ Ａ １１７２による。Water absorption rate; according to JIS A 6203. Bending strength:
According to JIS A 1172.
長さ変化率：住宅都市整備公団品質基準、長さ変化率測
定法による。Length change rate: According to the Housing and Urban Development Corporation quality standards, length change rate measurement method.
注入性 ：住宅都市整備公団品質基準、注入性測定法に
よる。Injectability: According to the Housing and Urban Development Corporation quality standards, injectability measurement method.
第１表から明らかなように、本発明の補修材において、
保水係数が適当であり、付着強さは実用上十分であり、
曲げ強さは標準養生の場合も、温冷繰り返し養生の場合
も十分であって、市販品よりも３０〜５０％も高い水準
を示し、またその耐久性も十分であり、吸水率も低く、
実用上十分であり、長さ変化率が低く、従って寸法が安
定しており、また注入性における広がり速さ、および粘
稠係数も満足できるものであった。As is clear from Table 1, in the repair material of the present invention,
The water retention coefficient is appropriate and the adhesion strength is sufficient for practical use.
The bending strength is sufficient both in the case of standard curing and in the case of repeated heating and cooling, and shows a level 30 to 50% higher than that of commercially available products.It also has sufficient durability and low water absorption.
It was practically sufficient, had a low rate of change in length, and therefore was dimensionally stable, and was also satisfactory in terms of spreading speed and viscosity coefficient in terms of injectability.
第１図に実施例ｌ〜３および比較例３の補修材硬化体の
１〜４ケ月間の長さ変化率を示す。FIG. 1 shows the rate of change in length of the cured repair materials of Examples 1 to 3 and Comparative Example 3 over a period of 1 to 4 months.
第１図から明らかなように本発明の補修材硬化体は長期
間にわたって、良好な寸法安定性を示した。As is clear from FIG. 1, the cured repair material of the present invention exhibited good dimensional stability over a long period of time.
本発明の効果は下記の通りである。 The effects of the present invention are as follows.
（１）従来廃棄物とされてきた、くずガラスや安価な板
ガラスを使用するため、補修材を非常に安価に製造する
ことが可能であり、それとともに廃棄物であるくずガラ
スを使用した場合には資源再利用の面でも有効である。(1) Since we use scrap glass and cheap plate glass, which have traditionally been considered waste, it is possible to manufacture repair materials at a very low cost. is also effective in terms of resource reuse.
（２）コンクリート構造物中に容易に浸透し、防水層が
形成されるため、半永久的な防水効果が得られ、止水性
補修材としてすぐれている。(2) Because it easily penetrates into concrete structures and forms a waterproof layer, it provides semi-permanent waterproofing effects and is excellent as a waterproof repair material.
（３）前項（２）に記載されるようにコンクリート構造
物と、補修材硬化体とが相互にｍ織を作るため、補修面
との接着性にすぐれ、浮き部分に対する充填効果が高い
。(3) As described in the previous section (2), since the concrete structure and the cured repair material mutually form a m-weave, the adhesiveness to the repaired surface is excellent and the filling effect for floating parts is high.
（４）時間の経過による流動性の変化（１時間程度〉が
少なく、取り扱いが容易である。(4) There is little change in fluidity over time (about 1 hour) and it is easy to handle.
（５）従来の補修材のように、ただ充填するだけでなく
前項（１）に記載されるように高い防水性を付与するこ
とができるので、ひび割れや浮きを有するコンクリート
構造物の水密性、防水性を回復させることができる。(5) Unlike conventional repair materials, it is not only used for filling, but also provides high waterproofness as described in the previous section (1), so it can improve the watertightness of concrete structures that have cracks or floats. Can restore waterproofness.
第１図は本発明および従来の補修材硬化体の各々の長さ
の経時的変化を示すグラフである。FIG. 1 is a graph showing changes over time in the lengths of cured repair materials of the present invention and conventional repair materials.
Claims (1)
％の、非晶珪酸質材料からなり、７０００ｃｍ＾２／ｇ
以上の粉末度を有する極小微細粉末と、 上記無機セメント質材料の重量に対し、１０〜２５重量
％（固形分）の皮膜形成性合成樹脂エマルジョンと、 を含む、コンクリート構造物のひび割れおよび浮き部分
の補修材。 ２、請求項１において、前記無機セメント質材料の重量
に対し、０．１重量％以下の界面活性剤を更に含有する
、補修材。[Claims] 1. Consisting of an inorganic cementitious material and an amorphous siliceous material in an amount of 10 to 30% by weight based on the weight of the inorganic cementitious material, and 7000 cm^2/g
Cracks and floating areas of a concrete structure, comprising: an ultrafine fine powder having a fineness of at least 10%, and a film-forming synthetic resin emulsion of 10 to 25% by weight (solid content) based on the weight of the inorganic cementitious material. repair material. 2. The repair material according to claim 1, further comprising 0.1% by weight or less of a surfactant based on the weight of the inorganic cementitious material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1300687A JP2578508B2 (en) | 1989-11-21 | 1989-11-21 | Repair material for cracks and floating parts of concrete structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1300687A JP2578508B2 (en) | 1989-11-21 | 1989-11-21 | Repair material for cracks and floating parts of concrete structures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03164458A true JPH03164458A (en) | 1991-07-16 |
| JP2578508B2 JP2578508B2 (en) | 1997-02-05 |
Family
ID=17887869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1300687A Expired - Fee Related JP2578508B2 (en) | 1989-11-21 | 1989-11-21 | Repair material for cracks and floating parts of concrete structures |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2578508B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5449533A (en) * | 1993-03-01 | 1995-09-12 | Morizane; Toshinori | Modifier for porous materials and method of modifying porous materials |
| US5531822A (en) * | 1993-03-01 | 1996-07-02 | Morizane; Toshinori | Modifier for porous materials and method of modifying porous materials |
-
1989
- 1989-11-21 JP JP1300687A patent/JP2578508B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5449533A (en) * | 1993-03-01 | 1995-09-12 | Morizane; Toshinori | Modifier for porous materials and method of modifying porous materials |
| EP0699644A1 (en) * | 1993-03-01 | 1996-03-06 | Toshinori Morizane | Modifier for porous materials and method of modifying porous materials |
| US5531822A (en) * | 1993-03-01 | 1996-07-02 | Morizane; Toshinori | Modifier for porous materials and method of modifying porous materials |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2578508B2 (en) | 1997-02-05 |
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