JPH08268744A - Low exothermic nonshrinkable filler - Google Patents

Low exothermic nonshrinkable filler

Info

Publication number
JPH08268744A
JPH08268744A JP9593495A JP9593495A JPH08268744A JP H08268744 A JPH08268744 A JP H08268744A JP 9593495 A JP9593495 A JP 9593495A JP 9593495 A JP9593495 A JP 9593495A JP H08268744 A JPH08268744 A JP H08268744A
Authority
JP
Japan
Prior art keywords
weight
parts
pts
cement
filler
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
Application number
JP9593495A
Other languages
Japanese (ja)
Inventor
Takashi Sakuma
隆司 佐久間
Naoki Yamashita
直樹 山下
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ONODA KK
Onoda Corp
Original Assignee
ONODA KK
Onoda Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ONODA KK, Onoda Corp filed Critical ONODA KK
Priority to JP9593495A priority Critical patent/JPH08268744A/en
Publication of JPH08268744A publication Critical patent/JPH08268744A/en
Pending legal-status Critical Current

Links

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
    • C04B28/04—Portland cements
    • 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
    • C04B2103/40—Surface-active agents, dispersants
    • C04B2103/408—Dispersants
    • 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
    • C04B2111/00439—Physico-chemical properties of the materials not provided for elsewhere in C04B2111/00
    • C04B2111/00448—Low heat cements
    • 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
    • C04B2111/34—Non-shrinking or non-cracking materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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)
  • Working Measures On Existing Buildindgs (AREA)

Abstract

PURPOSE: To improve fluidity and to suppress the separation of material, bleeding and a sudden temp. rise by incorporating a compsn. having a specified compsn. and a regulated diameter of materials. CONSTITUTION: Portland cement and powder of water-granulated blast furnace slag are used as principal binders by 27-47 pts.wt. and 20-40 pts.wt., respectively, and they are blended with 20-30 pts.wt. fine calcium carbonate powder, 2-8 pts.wt. fine activated silica powder, 1-3 pts.wt. expansive admixture for cement mixture, 1-3 pts.wt. anhydrous gypsum, 0.3-1 pts.wt. cement dispersant and 0.05-0.2 pts.wt. setting retarder to obtain the objective low exothermic nonshrinkable filler having 10.0-14.0wt.% ignition loss, <=1mm max. diameter of materials and a compsn. consisting of, by weight, 45.0-65.0% CaO, 15.0-27.0% SiO2 , 4.5-6.5% Al2 O3 , 2.0-3.5% MgO, 1.0-1.8% Fe2 O3 , 1.0-2.0% SO3 , 0.14-0.20% Na2 O and 0.20-0.35% K2 O.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】この発明は、ＦＲＰ被覆によるコ
ンクリート補修工法に用いる低発熱型無収縮充填材に関
するものである。更に詳しくは、（イ）流動性が良好
で、（ロ）材料分離及びブリーディング（Breeding) が
発生せず、しかも（ハ）硬化過程の急激な温度上昇を抑
制することによりＦＲＰの変形を防止するようにした、
ＦＲＰ被覆によるコンクリート補修工法に用いる低発熱
型無収縮充填材に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low heat generation type non-shrink filler used in a concrete repairing method by FRP coating. More specifically, (a) good fluidity, (b) material separation and bleeding do not occur, and (c) FRP deformation is prevented by suppressing a rapid temperature rise during the curing process. I did it,
The present invention relates to a low heat generation type non-shrinkable filler used in a concrete repairing method by FRP coating.

【０００２】[0002]

【従来の技術】コンクリート部材の劣化補修及び断面補
強等を行う場合、アンカーピン等を用い数ｍｍ〜数十ｃ
ｍの厚さで間隙を確保した後、鋼板、またはＦＲＰ等の
樹脂板（プラスチック、グラスファイバー等）で周囲を
覆い、コンクリートとの間に生じた間隙（空間）へ、無
機系あるいは有機系の充填材を打設及び注入することで
部材を拘束し、一体化させる工法（以下、ＦＲＰ被覆コ
ンクリート補修工法ともいう）が採用されつつある。2. Description of the Related Art When a deterioration repair or a cross-section reinforcement of a concrete member is performed, an anchor pin or the like is used, and several mm to several tens of c
After securing a gap with a thickness of m, cover the periphery with a steel plate or a resin plate (plastic, glass fiber, etc.) such as FRP, and to the gap (space) created with the concrete, to the inorganic or organic type A construction method (hereinafter, also referred to as FRP-covered concrete repair construction method) in which members are restrained and integrated by casting and injecting a filler is being adopted.

【０００３】[0003]

【発明が解決しようとする課題】しかし、この間隙に普
通セメントペーストや、普通モルタルを充填した場合、
流動性が悪いので狭い間隙には充填され難たく、しかも
材料分離が生じるため、ブリーディング（Breeding) が
発生し、ＦＲＰ及び鋼板、更にはコンクリートとの一体
化が図れない。一方、機械基礎や橋梁の支承部、また後
打ち壁等の逆打ちモルタルとして広く使用されている無
収縮モルタルを、この用途に用いると、その材料が有す
るノンブリーディング性、初期膨張性、収縮補償効果等
により、部材の一体化は達成されるものの、略断熱条件
下での使用となるため硬化過程で水和熱による温度上昇
が８０℃近くまで達してしまうため、ＦＲＰやプラスチ
ックの軟化温度（約１０ｍｍ厚で６０℃）をはるかに上
回り、樹脂表面の熱による変形を免れることは困難であ
った。However, when the space is filled with ordinary cement paste or ordinary mortar,
Since the fluidity is poor, it is difficult to fill the narrow gap, and material separation occurs, so that bleeding occurs, and integration with FRP, steel plate, and concrete cannot be achieved. On the other hand, when non-shrink mortar, which is widely used for mechanical foundations, bearings of bridges, and back striking mortar for post-strike walls, is used for this purpose, the material has non-bleeding properties, initial expansivity, and shrinkage compensation. Due to the effects, etc., the integration of the members is achieved, but since it is used under almost adiabatic conditions, the temperature rise due to the heat of hydration reaches up to about 80 ° C. during the curing process, so the softening temperature of FRP and plastic ( It was much higher than 60 ° C. at a thickness of about 10 mm, and it was difficult to avoid deformation of the resin surface due to heat.

【０００４】本発明では、流動性が良好でしかも材料分
離及びブリーディングの発生を抑えると共に、急激な温
度上昇を抑制した低発熱型無収縮充填材を提供しようと
するものである。An object of the present invention is to provide a low heat-generating type non-shrinkable filler which has good fluidity, suppresses material separation and bleeding, and suppresses rapid temperature rise.

【０００５】[0005]

【課題を解決するための手段】本願発明は以上の見地か
らなされたもので下記（１）〜（３）の請求項から構成
されている。 （１）下記の組成を有し、組成物の材料の最大粒径が１
ｍｍ以下であることを特徴とするする低発熱型無収縮充
填材。 強熱減量(ig.loss）１０．０ 〜１４．０ （重量％） ＣａＯ ４５．０ 〜６５．０ （重量％） ＳｉＯ2 １５．０ 〜２７．０ （重量％） Ａｌ2 Ｏ3 ４．５ 〜 ６．５ （重量％） ＭｇＯ ２．０ 〜 ３．５ （重量％） Ｆｅ2 Ｏ3 １．０ 〜 １．８ （重量％） ＳＯ3 １．０ 〜 ２．０ （重量％） Ｎａ2 Ｏ ０．１４〜 ０．２０（重量％） Ｋ2 Ｏ ０．２０〜 ０．３５（重量％） （２）下記の組成を有することを特徴とする低発熱型無
収縮充填材。 ポルトランドセメント ： ２７〜４７ （重量部） 高炉水砕スラグ粉末 ： ２０〜４０ （重量部） 炭酸カルシウム微粉末 ： ２０〜３０ （重量部） 活性シリカ質微粉末 ： ２〜 ８ （重量部） セメント系膨張材 ： １〜 ３ （重量部） 無水石膏 ： １〜 ３ （重量部） セメント分散剤 ： ０．３〜１ （重量部） 硬化遅延剤 ： ０．０５〜０．２（重量部） （３）前記（２）の組成において、高炉水砕スラグ粉
末、炭酸カルシウム微粉末、活性シリカ質微粉末、及び
セメント分散剤を下記の組成にした低発熱型無収縮充填
材。 高炉水砕スラグ粉末 ： ２５〜３５ （重量部） 炭酸カルシウム微粉末 ： ２２〜２８ （重量部） 活性シリカ質微粉末 ： ５〜 ７ （重量部） セメント分散剤 ： ０．５〜０．７（重量部）The present invention has been made from the above point of view, and comprises the following claims (1) to (3). (1) It has the following composition, and the maximum particle size of the material of the composition is 1
A low heat-generation type non-shrinkable filler characterized by having a size of not more than mm. The loss on ignition (ig.loss) 10.0 ~14.0 (wt%) CaO 45.0 ~65.0 (wt%) SiO 2 15.0 ~27.0 (wt%) Al 2 O 3 4. 5-6.5 (wt%) MgO 2.0 ~ 3.5 (wt%) Fe 2 O 3 1.0 ~ 1.8 ( wt%) SO 3 1.0 ~ 2.0 (wt%) Na 2 O 0.14 to 0.20 (wt%) K 2 O 0.20 to 0.35 (wt%) (2) A low heat-generation type non-shrinkable filler having the following composition. Portland cement: 27-47 (parts by weight) Granulated blast furnace slag powder: 20-40 (parts by weight) Calcium carbonate fine powder: 20-30 (parts by weight) Activated siliceous fine powder: 2-8 (parts by weight) Cement-based Expanding agent: 1 to 3 (parts by weight) Anhydrite: 1 to 3 (parts by weight) Cement dispersant: 0.3 to 1 (parts by weight) Curing retarder: 0.05 to 0.2 (parts by weight) (3 ) In the composition of (2) above, a low heat generation type non-shrinkable filler having the following composition of granulated blast furnace slag powder, calcium carbonate fine powder, activated siliceous fine powder, and cement dispersant. Granulated blast furnace slag powder: 25-35 (parts by weight) Calcium carbonate fine powder: 22-28 (parts by weight) Activated siliceous fine powder: 5-7 (parts by weight) Cement dispersant: 0.5-0.7 ( Parts by weight)

【０００６】前記（２）の低発熱型無収縮充填材は、前
記（１）の低発熱型無収縮充填材より、流動性、材料分
離及びブリーディング、硬化過程の急激な温度上昇の抑
制等において、より好ましい結果を与える。The low heat-generating non-shrinkable filler (2) is superior to the low heat-generating non-shrinkable filler (1) in terms of fluidity, material separation and bleeding, and suppression of rapid temperature rise during the curing process. , Give more favorable results.

【０００７】本願発明において使用する高炉水砕スラグ
粉末の組成の１例を上げると下記の通りである。 ＳｉＯ2 ３３．６ （重量％） Ａｌ2 Ｏ3 １４．５ （重量％） ＣａＯ ４１．８ （重量％） ＭｇＯ ６．７ （重量％） ＴｉＯ2 １．０９（重量％） Ｆｅ2 Ｏ3 ０．２５（重量％） ＭｎＯ ０．５４（重量％） Ｓ ０．６８（重量％） Ｎａ2 Ｏ ０．２１（重量％） Ｋ2 Ｏ ０．３９（重量％）An example of the composition of the granulated blast furnace slag powder used in the present invention is as follows. SiO 2 33.6 (wt%) Al 2 O 3 14.5 (wt%) CaO 41.8 (wt%) MgO 6.7 (wt%) TiO 2 1.09 (wt%) Fe 2 O 3 0 0.25 (wt%) MnO 0.54 (wt%) S 0.68 (wt%) Na 2 O 0.21 (wt%) K 2 O 0.39 (wt%)

【０００８】 [0008]

【０００９】本願発明において、硬化遅延剤とは、糖質
（澱粉分解物、カルボキシルメチルセルロース等）をい
い、これを加えることにより、硬化過程の水和熱の発現
が著しく抑制される。In the present invention, the hardening retarder refers to a sugar (starch decomposition product, carboxymethyl cellulose, etc.), and the addition of this significantly suppresses the heat of hydration during the hardening process.

【００１０】次に、本願発明について更に詳しく説明す
る。 （イ）本願発明においては、組成物の材料を最大粒径が
１ｍｍ以下になるように抑える。すなわち、ポルトラン
ドセメントを用いたモルタル及び無収縮モルタルのよう
に、細骨材が混入されていないため極めて狭い間隙であ
っても充填が可能である（一般的に、モルタルの場合１
０ｍｍ以下の間隙には充填するのが困難である。）。 （ロ）流動性が良好であり、しかもブリーディングの発
生を抑えるには、数多の試験を繰り返した結果本願発明
の組成であることが不可欠である。本願発明において
は、充填により部材を一体化させることが目的である。
従って、ポルトランドセメントを用いたペースト及びモ
ルタルでは、ブリーディングの発生を抑制することは極
めて困難であり、付着力の低下が生ずる。通常、ブリー
ディングが発生しないといわれている無収縮モルタルを
使用した場合も、注入間隙が数ｍｍと狭い場合は、流動
性を得るために練り混ぜ水が多量に必要となるため、結
果的に材料分離等が生じ、一体化が不可能となる。ま
た、コンクリート外周の被覆材の材質が鉄の場合、ブリ
ーディング等で収縮した間隙に発錆が認められる恐れが
あるため、耐久性が保持できないが、本発明の組成物に
おいては、セメント分散材を０．３〜１．０重量部（好
ましくは、０．５〜０．７重量部）混入することにより
所定の水量で優れた流動性が確保され、また活性シリカ
質微粉末を混入することにより、ブリーディング等も発
生しないため、期待する効果（発生の防止）が容易に得
られる。 （ハ）一般的に、セメントを用いた充填材及びエポキシ
樹脂系充填材等は、硬化に伴う水和熱、または反応熱が
高く、肉厚の薄い鋼板及びプラスチック樹脂板等を変形
させるため、被覆した板の所定形状が保持できなくなる
と共に、接合部に間隙が生じ、その部位より再び劣化が
生じやすい。これに対し、本発明の組成物は、高炉水砕
スラグ粉末及び炭酸カルシウム微粉末等を、それぞれ２
０〜４０重量部及び４０〜３０重量部（好ましくは、２
５〜３５重量部、及び２０〜２５重量部）混入して単位
セメント量を減ずると共に、澱粉分解物（発熱遅延剤）
を添加した組成としたため、硬化過程の水和熱の発現が
著しく抑制されるので、上記のような弊害を招き難い。Next, the present invention will be described in more detail. (A) In the present invention, the material of the composition is suppressed so that the maximum particle size is 1 mm or less. That is, unlike mortar using portland cement and non-shrink mortar, fine aggregate is not mixed, so filling is possible even in an extremely narrow gap (generally, in the case of mortar, 1
It is difficult to fill the gap of 0 mm or less. ). (B) In order to have good fluidity and to suppress the occurrence of bleeding, it is essential that the composition of the present invention is the result of repeated tests. In the present invention, the object is to integrate the members by filling.
Therefore, with a paste and mortar using Portland cement, it is extremely difficult to suppress the occurrence of bleeding, and the adhesive force is reduced. Even when using non-shrink mortar, which is generally said to cause no bleeding, a large amount of water for kneading is required to obtain fluidity when the injection gap is as narrow as a few mm. Separation and the like occur, making integration impossible. Further, when the material of the coating material on the outer periphery of the concrete is iron, rust may be observed in the gap contracted by bleeding or the like, so durability cannot be maintained, but in the composition of the present invention, a cement dispersion material is used. By mixing 0.3 to 1.0 part by weight (preferably 0.5 to 0.7 part by weight), excellent fluidity can be ensured with a predetermined amount of water, and by mixing active siliceous fine powder, Since bleeding does not occur, the expected effect (prevention of occurrence) can be easily obtained. (C) In general, fillers and epoxy resin-based fillers using cement have high hydration heat or reaction heat associated with curing, and deform thin steel plates and plastic resin plates, It becomes impossible to maintain the predetermined shape of the coated plate, and a gap is created in the joint portion, so that deterioration is likely to occur again from that portion. On the other hand, the composition of the present invention contains granulated blast furnace slag powder, calcium carbonate fine powder, etc.
0-40 parts by weight and 40-30 parts by weight (preferably 2
5 to 35 parts by weight, and 20 to 25 parts by weight) to reduce the amount of unit cement by mixing it, and decomposed starch (exothermic retarder)
Since the composition is added with, the expression of heat of hydration during the curing process is remarkably suppressed, so that the above-mentioned adverse effects are unlikely to occur.

【００１１】[0011]

【作用】本発明では、高炉水砕スラグ粉末、ポルトラン
ドセメントを主結合材として、活性シリカ質微粉末、炭
酸カルシウム粉末、セメント系膨張材、無水石膏、セメ
ント分散剤、澱粉分解物等を配合することにより、高流
動性及び無収縮性等の優れた特性を有し、かつ硬化過程
の温度上昇分布を幅広くすることにより、最高温度を抑
えたものである。In the present invention, the granulated blast furnace slag powder and Portland cement are used as the main binder, and the active silica fine powder, calcium carbonate powder, cement-based expansive material, anhydrous gypsum, cement dispersant, starch decomposition product, etc. are blended. As a result, it has excellent characteristics such as high fluidity and non-shrinkability, and the maximum temperature is suppressed by broadening the temperature rise distribution during the curing process.

【００１２】また、本組成物は前述の単位セメント量の
低減及び澱粉分解物（発熱遅延剤）を混入した相互作用
により、比較的凝結に時間を要するにもかかわらず、材
齢３日の圧縮強度が約２５０ｋｇｆ／ｃｍ2 、同じく材
齢２８日の圧縮強度が約５８０ｋｇｆ／ｃｍ2 程度と、
従来の無収縮モルタルと略同等の強度を有することが認
められ、充填材として十分な特性を示した（後述）。The composition has a compressive strength of 3 days even though it takes a relatively long time to set due to the above-mentioned interaction of reducing the unit cement amount and mixing the starch decomposition product (exothermic retarder). Is about 250 kgf / cm 2 , and similarly, the compressive strength of 28 days old is about 580 kgf / cm 2 ,
It was confirmed that it had a strength almost equal to that of conventional non-shrink mortar, and showed sufficient characteristics as a filler (described later).

【００１３】[0013]

【実施例】【Example】

＜実施例（試験例）１＞下記の表１に示す組成物（低発
熱型無収縮充填材）を、下記表２に示す試験水準に従っ
て調製した。<Example (Test Example) 1> The compositions (low heat generation type non-shrink filler) shown in Table 1 below were prepared according to the test levels shown in Table 2 below.

【００１４】 [0014]

【００１５】注１．上記表中、ポルトランドセメントは
普通ポルトランドセメント（秩父小野田社製）、高炉水
砕スラグ粉末はエスメント（新日鉄化学社製）、炭酸カ
ルシウム微粉末はＤＳ−８０（清水工業社製）、活性シ
リカ質微粉末はシリカフラワー（屋久島電工社製）、セ
メント系膨張材はエクスパン（秩父小野田社製）、デキ
ストリンはデキストリン１０２Ｍ（日澱化学社製）、ア
ルミニウム粉末はアルペースト（東洋アルミニウム社
製）をそれぞれ用いた。 注２．上記表中、セメント分散剤は、実施例１において
はセルフロー１１０Ｐ（βナフタレンスルホン酸塩ホル
ムアルデヒド縮合物系，第一工業製薬社製）、実施例２
においてはマイティ１００（βナフタレンスルホン酸塩
ホルムアルデヒド縮合物系，花王社製）、実施例３にお
いてはメルメントＦ１０（メラミンスルフォンサンホル
マリン縮合物系，ＳＫＷ社製）をそれぞれ用いた。Note 1. In the above table, Portland cement is ordinary Portland cement (manufactured by Chichibu Onoda Co., Ltd.), granulated blast furnace slag powder is Essent (manufactured by Nippon Steel Chemical Co., Ltd.), calcium carbonate fine powder is DS-80 (manufactured by Shimizu Kogyo Co., Ltd.), activated silica fine powder. Powder is silica flower (Yakushima Electric Co., Ltd.), cement expansive material is EXPAN (Chichibu Onoda Co., Ltd.), dextrin is Dextrin 102M (Nippon Chemical Co., Ltd.), aluminum powder is Alpaste (Toyo Aluminum Co., Ltd.). I was there. Note2. In the above table, the cement dispersant is Cellflow 110P (β-naphthalene sulfonate formaldehyde condensate system, manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.) in Example 1, and Example 2
In Example 3, Mighty 100 (β-naphthalene sulfonate formaldehyde condensate system, manufactured by Kao Corporation) was used, and in Example 3, Melment F10 (melamine sulfone sun formalin condensate system, manufactured by SKW Corporation) was used.

【００１６】 [0016]

【００１７】前記表１及び表２に従って調製した組成物
（本願実施例及び比較例）を、日本道路公団規格（ＪＨ
Ｓ）の「無収縮モルタル品質規格試験方法」（３１２−
１９９２）に則り試験した。試験結果を第３表に示す。The compositions prepared according to Tables 1 and 2 (Examples and Comparative Examples of the present application) were tested according to the Japan Highway Public Corporation Standard (JH).
S) "Test method for non-shrink mortar quality standard" (312-
1992). The test results are shown in Table 3.

【００１８】 [0018]

【００１９】また、簡易断熱温度上昇は、容量１Ｌのデ
ュワ瓶による簡易法により行った。その結果を図１に示
す。Further, the simple adiabatic temperature rise was carried out by a simple method using a Dewar bottle having a capacity of 1 L. The result is shown in FIG.

【００２０】更に、模擬型枠による温度上昇は、塩ビ製
枠（耐酸性塩化ビニール樹脂板，肉厚１０ｍｍ，底有
り，Ｌ５００×Ｗ５００×Ｈ１００ｍｍ，容量約２．５
Ｌ）に試料を成形し、上部をコンクリート板（Ｌ５００
×Ｗ６００×Ｈ５０ｍｍ）で多い内部温度（熱電対使
用）を計測した。その結果を図２に示す。Further, the temperature rise by the simulated mold is caused by a PVC frame (acid-resistant vinyl chloride resin plate, thickness 10 mm, with bottom, L500 × W500 × H100 mm, capacity about 2.5).
L) sample is molded and the upper part is made of concrete plate (L500
A large internal temperature (using a thermocouple) was measured at × W600 × H50 mm). The result is shown in FIG.

【００２１】[0021]

【発明の効果】上記表３、図１、及び図２の結果によれ
ば、本願の低発熱型無収縮充填材（組成物 実施例１、
２、３、）は、従来の充填材と比較して、良好な流動
性、ノンブリーディング性、硬化過程の急激な温度上昇
の抑制の３者をいずれも達成している。従って、ＦＲＰ
被覆コンクリート補修工法用低発熱型無収縮充填材とし
て、十分に使用に耐えるものである。According to the results of Table 3 above, FIG. 1 and FIG. 2, the low heat generation type non-shrink filler (composition of Example 1,
In comparison with the conventional fillers, Nos. 2, 3 and 3 have all achieved good fluidity, non-bleeding property, and suppression of rapid temperature rise during the curing process. Therefore, FRP
As a low heat generation type non-shrinkable filler for the repairing method of coated concrete, it can be used sufficiently.

【図面の簡単な説明】[Brief description of drawings]

【図１】簡易断熱温度上昇試験結果を示す図である。FIG. 1 is a diagram showing the results of a simple adiabatic temperature rise test.

【図２】模擬型枠による温度上昇試験結果である。FIG. 2 is a result of a temperature rise test using a simulated formwork.

───────────────────────────────────────────────────── 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 18:14 22:10 14:04 22:14 24:22 24:38 22:04） 111:72 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technical display area C04B 18:14 22:10 14:04 22:14 24:22 24:38 22:04) 111: 72

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】 下記の組成を有し、組成物の材料の最大
粒径が１ｍｍ以下であることを特徴とする低発熱型無収
縮充填材。 強熱減量(ig.loss）１０．０ 〜１４．０ （重量％） ＣａＯ ４５．０ 〜６５．０ （重量％） ＳｉＯ2 １５．０ 〜２７．０ （重量％） Ａｌ2 Ｏ3 ４．５ 〜 ６．５ （重量％） ＭｇＯ ２．０ 〜 ３．５ （重量％） Ｆｅ2 Ｏ3 １．０ 〜 １．８ （重量％） ＳＯ3 １．０ 〜 ２．０ （重量％） Ｎａ2 Ｏ ０．１４〜 ０．２０（重量％） Ｋ2 Ｏ ０．２０〜 ０．３５（重量％）1. A low heat-generation type non-shrinkable filler having the following composition, wherein the maximum particle size of the material of the composition is 1 mm or less. The loss on ignition (ig.loss) 10.0 ~14.0 (wt%) CaO 45.0 ~65.0 (wt%) SiO 2 15.0 ~27.0 (wt%) Al 2 O 3 4. 5-6.5 (wt%) MgO 2.0 ~ 3.5 (wt%) Fe 2 O 3 1.0 ~ 1.8 ( wt%) SO 3 1.0 ~ 2.0 (wt%) Na 2 O 0.14 to 0.20 (wt%) K 2 O 0.20 to 0.35 (wt%) 【請求項２】 下記の組成を有することを特徴とする低
発熱型無収縮充填材。 ポルトランドセメント ： ２７〜４７ （重量部） 高炉水砕スラグ粉末 ： ２０〜４０ （重量部） 炭酸カルシウム微粉末 ： ２０〜３０ （重量部） 活性シリカ質微粉末 ： ２〜 ８ （重量部） セメント系膨張材 ： １〜 ３ （重量部） 無水石膏 ： １〜 ３ （重量部） セメント分散剤 ： ０．３〜１ （重量部） 硬化遅延剤 ： ０．０５〜０．２（重量部）2. A low heat-generating type non-shrink filler having the following composition. Portland cement: 27-47 (parts by weight) Granulated blast furnace slag powder: 20-40 (parts by weight) Calcium carbonate fine powder: 20-30 (parts by weight) Activated siliceous fine powder: 2-8 (parts by weight) Cement-based Expansive material: 1 to 3 (parts by weight) Anhydrite gypsum: 1 to 3 (parts by weight) Cement dispersant: 0.3 to 1 (parts by weight) Set retarder: 0.05 to 0.2 (parts by weight) 【請求項３】請求項２の組成において、高炉水砕スラグ
粉末、炭酸カルシウム微粉末、活性シリカ質微粉末、及
びセメント分散剤を下記の組成にした低発熱型無収縮充
填材。 高炉水砕スラグ粉末 ： ２５〜３５ （重量部） 炭酸カルシウム微粉末 ： ２２〜２８ （重量部） 活性シリカ質微粉末 ： ５〜 ７ （重量部） セメント分散剤 ： ０．５〜０．７（重量部）3. A low heat-generation type non-shrinkage filler having the following composition in the composition of claim 2, wherein granulated blast furnace slag powder, calcium carbonate fine powder, activated siliceous fine powder, and cement dispersant have the following composition. Granulated blast furnace slag powder: 25-35 (parts by weight) Calcium carbonate fine powder: 22-28 (parts by weight) Activated siliceous fine powder: 5-7 (parts by weight) Cement dispersant: 0.5-0.7 ( Parts by weight)
JP9593495A 1995-03-30 1995-03-30 Low exothermic nonshrinkable filler Pending JPH08268744A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9593495A JPH08268744A (en) 1995-03-30 1995-03-30 Low exothermic nonshrinkable filler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9593495A JPH08268744A (en) 1995-03-30 1995-03-30 Low exothermic nonshrinkable filler

Publications (1)

Publication Number Publication Date
JPH08268744A true JPH08268744A (en) 1996-10-15

Family

ID=14151110

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9593495A Pending JPH08268744A (en) 1995-03-30 1995-03-30 Low exothermic nonshrinkable filler

Country Status (1)

Country Link
JP (1) JPH08268744A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010002615A (en) * 1999-06-16 2001-01-15 이구택 A filler for preventing clogging of laddel collect nozzle
JP2002021338A (en) * 2000-07-03 2002-01-23 Tokyo Gas Co Ltd Method for reparing cross section of reinforced concrete structure, and filler used therein
JP2007217197A (en) * 2006-02-14 2007-08-30 Dc Co Ltd Cement composition for shrinkage-compensating concrete and premix cement composition
JP2008050177A (en) * 2006-08-22 2008-03-06 Asahi Kasei Construction Materials Co Ltd Expansive cement-based joint filler for autoclaved lightweight cellular concrete board
US8133317B2 (en) 2005-10-17 2012-03-13 Taiheiyo Cement Corporation Cement additive and cement composition
JP2014015356A (en) * 2012-07-10 2014-01-30 Denki Kagaku Kogyo Kk Cement admixture, cement composition, and cement mortar using them
JP2014125371A (en) * 2012-12-26 2014-07-07 Takenaka Komuten Co Ltd Hydraulic blast furnace slag composition and concrete cured body
JP2014125370A (en) * 2012-12-26 2014-07-07 Takenaka Komuten Co Ltd Hydraulic blast furnace slag composition and concrete cured body
JP2016113326A (en) * 2014-12-16 2016-06-23 株式会社トクヤマ Hydraulic composition
WO2018185072A1 (en) * 2017-04-07 2018-10-11 Hilti Aktiengesellschaft Use of fine calcium carbonate in an inorganic mortar system based on aluminous cement to increase load values
JP2021516209A (en) * 2018-03-20 2021-07-01 株式会社トライポッドＴｒｉｐｏｄ Ｃｏ．，Ｌｔｄ． Hydration heat reducing agent with improved long-term storage

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010002615A (en) * 1999-06-16 2001-01-15 이구택 A filler for preventing clogging of laddel collect nozzle
JP2002021338A (en) * 2000-07-03 2002-01-23 Tokyo Gas Co Ltd Method for reparing cross section of reinforced concrete structure, and filler used therein
US8133317B2 (en) 2005-10-17 2012-03-13 Taiheiyo Cement Corporation Cement additive and cement composition
KR101313015B1 (en) * 2005-10-17 2013-10-01 디씨 컴퍼니 리미티드 Cement additive and cement composition
JP2007217197A (en) * 2006-02-14 2007-08-30 Dc Co Ltd Cement composition for shrinkage-compensating concrete and premix cement composition
JP2008050177A (en) * 2006-08-22 2008-03-06 Asahi Kasei Construction Materials Co Ltd Expansive cement-based joint filler for autoclaved lightweight cellular concrete board
JP2014015356A (en) * 2012-07-10 2014-01-30 Denki Kagaku Kogyo Kk Cement admixture, cement composition, and cement mortar using them
JP2014125371A (en) * 2012-12-26 2014-07-07 Takenaka Komuten Co Ltd Hydraulic blast furnace slag composition and concrete cured body
JP2014125370A (en) * 2012-12-26 2014-07-07 Takenaka Komuten Co Ltd Hydraulic blast furnace slag composition and concrete cured body
JP2016113326A (en) * 2014-12-16 2016-06-23 株式会社トクヤマ Hydraulic composition
WO2018185072A1 (en) * 2017-04-07 2018-10-11 Hilti Aktiengesellschaft Use of fine calcium carbonate in an inorganic mortar system based on aluminous cement to increase load values
US10815157B2 (en) 2017-04-07 2020-10-27 Hilti Aktiengesellschaft Use of fine calcium carbonate in an inorganic mortar system based on aluminous cement to increase load values
JP2021516209A (en) * 2018-03-20 2021-07-01 株式会社トライポッドＴｒｉｐｏｄ Ｃｏ．，Ｌｔｄ． Hydration heat reducing agent with improved long-term storage

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