JPS5930747A - Spraying mortar concrete composition - Google Patents

Spraying mortar concrete composition

Info

Publication number
JPS5930747A
JPS5930747A JP14098982A JP14098982A JPS5930747A JP S5930747 A JPS5930747 A JP S5930747A JP 14098982 A JP14098982 A JP 14098982A JP 14098982 A JP14098982 A JP 14098982A JP S5930747 A JPS5930747 A JP S5930747A
Authority
JP
Japan
Prior art keywords
mortar
binder
water
concrete composition
mortar concrete
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
Application number
JP14098982A
Other languages
Japanese (ja)
Other versions
JPH0352420B2 (en
Inventor
磯崎 啓
中川 晃次
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.)
Denka Co Ltd
Original Assignee
Denki Kagaku Kogyo KK
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 Denki Kagaku Kogyo KK filed Critical Denki Kagaku Kogyo KK
Priority to JP14098982A priority Critical patent/JPS5930747A/en
Publication of JPS5930747A publication Critical patent/JPS5930747A/en
Publication of JPH0352420B2 publication Critical patent/JPH0352420B2/ja
Granted legal-status Critical Current

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  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 本発明は、急結性、付着性、化学抵抗性にすぐれた吹付
モルタル・コンクリート組成物に関するC従来、ポルト
ランドセメントあるいはこれにアルミン酸ソーダーや炭
酸ソーダー等の急結剤を添加したものを結合材とする吹
付材が使用されている。しかし、この吹付材では、酸性
土@あるいは酸性水が湧出する場所では、耐久性の大き
な工事ができないという欠点がある。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sprayed mortar/concrete composition with excellent rapid setting properties, adhesion properties, and chemical resistance. Spraying materials are used that have a binder containing . However, this sprayed material has the disadvantage that it cannot be used for long-lasting construction work in areas where acidic soil or acidic water gushes out.

本発明は、このような欠点を除去するには、結合材とし
て、潜在水硬性を有する微粉末とアルカリ刺激剤とを含
有したものを用いればよいことを見い出し、本発明を完
成したものである。
The present invention has been completed based on the discovery that in order to eliminate such drawbacks, it is sufficient to use a binder containing a fine powder with latent hydraulic properties and an alkaline stimulant. .

すなわち、本発明は、潜在水硬性ff:Vするプレーン
比表面積2,000 cw”717以上の物質とアルカ
リ刺激剤とを含有してなる結合材、水ならびに骨材を含
んでなる吹付モルタル・コンクリート組成物である。
That is, the present invention provides a shot mortar concrete comprising a binder comprising a substance having a plane specific surface area of 2,000 cw"717 or more and an alkaline stimulant, water and aggregate having a latent hydraulic hardness ff:V. It is a composition.

以下、詳しく本発明について説明すると、潜在水硬性を
有する物質とじては、例えは高炉スラグ、転炉スラグの
ような鉄鋼スラグ及び72イアツシユなどをあげること
ができ、その中でも、高炉水砕スラグが最も適している
。そのガラス化率は1.5以上であるものが最も好まし
い。この物質の粉末直は、ブレーン比表面積で2.00
0♂/g以上は必要でお多いこれ未満である七強度発現
が充分でない。また、8,000の279以上になると
乾燥収縮が大きく亀裂発生の原因となるので、3.00
0〜6.000 crt?/11とするのが好ましい。
The present invention will be explained in detail below. Examples of substances having latent hydraulic properties include blast furnace slag, steel slag such as converter slag, and 72 ash, among which granulated blast furnace slag is used. most suitable. Most preferably, the vitrification ratio is 1.5 or more. The direct powder of this substance has a Blaine specific surface area of 2.00.
0♂/g or more is necessary, but less than 0♂/g is not sufficient for strength development. Also, if it exceeds 279 of 8,000, the drying shrinkage will be large and cause cracks, so 3.00
0~6.000 crt? /11 is preferable.

アルカリ刺激剤としては、アルカリ金属あるいはアルカ
リ土類金属の水酸化物、炭酸塩、炭酸水素塩、硫酸塩、
亜硫酸塩、硝酸塩、亜硝酸塩、塩化物、リン酸塩、アル
ミン酸塩、珪酸塩などのアルカリ性塩などがあげられ、
これらの中から1種又は2種以上を選んで使用するが、
一般に、アルカリ金属塩は刺激が強く、アルカリ土類金
属塩は緩やかで強度発現が遅い。これらのアルカリ刺激
剤のなかにあって、水酸化物は、刺激力が最も強く吹付
モルタルコンクリートの急結性に大きく寄与する。これ
に炭酸塩を併用すると長期材令の強度増進につながる。
Alkali stimulants include alkali metal or alkaline earth metal hydroxides, carbonates, hydrogen carbonates, sulfates,
Examples include alkaline salts such as sulfites, nitrates, nitrites, chlorides, phosphates, aluminates, and silicates.
Select and use one or more of these,
In general, alkali metal salts have a strong irritant, while alkaline earth metal salts have a gentle and slow onset of strength. Among these alkaline stimulants, hydroxide has the strongest stimulant power and greatly contributes to the rapid setting of shotcrete mortar concrete. Combining this with carbonate leads to increased strength over a long period of time.

硫酸塩は、長期強度増進の他にエトリンガイトを生成す
ることにより膨張力を生じ乾燥収縮によるひびわれを低
減し得る。珪酸塩は、耐酸性の向上に効果があるだけで
なく付着力を高める。さらに付着力を高めるために、ポ
リアクリルアミド、ポリビニールアルコール、エチレン
酢酸ビニル共重合体、ポリエチレンオキサイドなどを混
入すると良い。
In addition to increasing long-term strength, sulfates can create swelling forces and reduce cracking due to drying shrinkage by forming ettringite. Silicates are effective in improving acid resistance as well as increasing adhesion. In order to further increase the adhesion, polyacrylamide, polyvinyl alcohol, ethylene vinyl acetate copolymer, polyethylene oxide, etc. may be mixed.

吹付モルタル・コンクリートは、急結性と付着性が要求
されるので、これらのアルカリ刺激剤の中にあっては、
とくにアルカリ金属塩が適しており、アルカリ金属の水
酸化物、炭酸塩、珪酸塩、アルミン酸塩、硫酸塩などか
ら1種または2種以上を組み合わせて使用するのが好ま
しい。アルカリ金属塩にはL1塩、Na塩、五塩などが
あるが、Na塩が一般的でりる0珪酸ナトリウムには、
1゜2.3.4号の水ガラス(溶液あるいは粉末)、結
晶質のメタ珪酸ナトリウム、オルソ珪酸ナトリウム、ピ
ロ珪酸ナトリウムなどがあり、組成は、Na2O/5i
02= o、 1〜5.0 (モル比)の範囲のものが
好ましい。これらのアルカリ刺激剤は、粉末あるいは溶
液で使用して差し支えないが、吹付モルタル・コンクリ
ートにおいては浴液で用いる方が好ましい結果金持たら
す。何故なら、本発明では、潜在水硬性を有する微粉末
とアルカリ刺激剤および水が均一に混合され接触するこ
とが肝要であるからである。吹付ノズルの先端で水と接
触する乾式法においても出来るだけミキサー中で多くの
水を加えて混練したのち吹付を行った方が、凝結性状お
よび付着力に好ましい結果を与える。
Shot mortar and concrete require quick setting and adhesion, so among these alkaline irritants,
Alkali metal salts are particularly suitable, and it is preferable to use one or a combination of two or more of alkali metal hydroxides, carbonates, silicates, aluminates, sulfates, and the like. Alkali metal salts include L1 salt, Na salt, penta-salt, etc., but sodium silicate, which is commonly Na salt, has
1゜2.3.4 water glass (solution or powder), crystalline sodium metasilicate, sodium orthosilicate, sodium pyrosilicate, etc., and the composition is Na2O/5i
02=o, preferably in the range of 1 to 5.0 (molar ratio). These alkaline stimulants can be used in powder or solution form, but in shotcrete mortar concrete it is preferable to use them in a bath solution, resulting in better results. This is because, in the present invention, it is important that the fine powder having latent hydraulic properties, the alkaline stimulant, and water are uniformly mixed and brought into contact with each other. Even in the dry method in which the tip of the spray nozzle comes into contact with water, it is better to add as much water as possible in a mixer and knead it before spraying to obtain better results in terms of coagulation properties and adhesion.

アルカリ刺激剤の添加量は、潜在水硬性を有する物質1
00部(部は重量部、以下同じ)に対し0.1〜50部
好ましくは2〜15部である。これ以外の童では強度発
現は悪くなる。
The amount of alkaline stimulant added is 1
The amount is 0.1 to 50 parts, preferably 2 to 15 parts per 00 parts (parts are parts by weight, the same applies hereinafter). In other children, strength development is poor.

さらに、セメント系減水剤’&ffl用することによっ
て、強度発現をよくすることができる。セメント系減水
剤としては、一般品の全てを使用することができるが、
特に分子内にスルホン基を有する化合物およびオキシ有
機酸塩糸、糖類が好ましく、これらから1種または2種
以上を選んで組み合わせ使用するのが良い。その添加量
は、潜在水硬性を有する物質100部に対し0.01〜
6部好ましくは0.05〜6部である。
Furthermore, by using a cement-based water reducing agent '&ffl, strength development can be improved. All general products can be used as cement-based water reducers, but
Particularly preferred are compounds having a sulfone group in the molecule, oxyorganic acid salts, and saccharides, and it is preferable to select one or more of these and use them in combination. The amount added is 0.01 to 100 parts of the substance with latent hydraulic properties.
6 parts, preferably 0.05 to 6 parts.

本発明の吹付モルタル・コンクリートは、水利硬化に際
し容易に酸と反応して可溶性塩となる上するものである
0また、Oa (O)I )2は加熱すると脱水しOa
Oとなり、これが再水和する時に膨張破壊の原因となる
ものであるが、本発明では、それがないので耐熱性にも
すぐれたものになる。その際に、珪砂、シャモット、マ
グネシャなどの耐火性の骨材を用いねはさらに好結果を
もたらす。用途としては、煙道内面や焼却炉などがあげ
られる。
The sprayed mortar/concrete of the present invention easily reacts with acids to form soluble salts during water-curing.In addition, Oa (O)I)2 dehydrates when heated and becomes Oa
This becomes O and causes expansion failure when rehydrated, but in the present invention, since this is not present, the product has excellent heat resistance. In this case, the use of fire-resistant aggregates such as silica sand, chamotte, and magnesia brings even better results. Applications include the inside of flues and incinerators.

以上、本発明のモルタル・コンクリートは、耐酸性、耐
熱性が要求される吹付材として用いればすぐれた耐久性
を示し、しかも、急結性が犬であるので付着力が強く、
材料のリバウンド率の小さい施工が可能となる0吹伺材
の施工法としては、在来の水を吹付先端で添加する乾式
法、骨材金沢ぜる段階でミキサー中で水を添加する湿式
法のいずれをも採用することができる。
As mentioned above, the mortar/concrete of the present invention exhibits excellent durability when used as a spray material that requires acid resistance and heat resistance, and has a strong adhesion force due to its rapid setting properties.
Construction methods for zero-blown materials that enable construction with a low material rebound rate include the conventional dry method, in which water is added at the spray tip, and the wet method, in which water is added in a mixer at the stage of crushing the aggregate Kanazawa. Either of these can be adopted.

以下、実施例をあけてさらに詳しく説明する。Hereinafter, a more detailed explanation will be given with reference to Examples.

実施例 表−1に記した配合の結合材を用い、結合材−砂地=1
:4、水−結合材比=55%のモルタルを練9、AST
MO403−65Tのゾロフタ−貫入抵抗法による凝結
・硬化時間を測定した。モルタルは、B’ M 2.7
の天然砂を使用し、結合材をモルタルミキサーで60秒
空aVした後、水を加え10〜60秒練り混ぜし、これ
をすばやく型枠につめた。養生は20℃、801R,H
,で行なった。その結果を表−2に示す。
Using the binder with the composition shown in Example Table-1, binder - sand = 1
:4, Knead mortar with water-binder ratio = 55%9, AST
The setting and curing time of MO403-65T was measured using the Zolofter penetration resistance method. Mortar is B'M 2.7
Using natural sand, the binder was left in a mortar mixer for 60 seconds, water was added and mixed for 10 to 60 seconds, and the mixture was quickly packed into a mold. Curing is at 20℃, 801R, H
, was done. The results are shown in Table-2.

本発明例を示す配合A1−乙のモルタルは、吹付材とし
て十分に使用可能となる急結性を示すことが明らかでち
る。
It is clear that the mortar of formulation A1-B, which represents an example of the present invention, exhibits rapid setting properties that enable it to be used as a spraying material.

光 −2 次に、同一配合のモルタルで4X4X16cy++供試
体を作製し、20°C180%R,H,で養生したとき
の圧縮強度と耐酸性の試験を行なった。耐酸性試験は、
20℃で7日間養生した供試体を酸水溶液にさらに28
日間浸漬し、浸漬前の重量に対する残存重量率(@で表
示した。その結果を表−3に示す。
Light-2 Next, 4X4X16cy++ specimens were prepared using mortar of the same composition, and tested for compressive strength and acid resistance when cured at 20°C, 180% R,H. The acid resistance test is
The specimen cured at 20℃ for 7 days was further soaked in an acid aqueous solution for 28 hours.
The samples were immersed for one day, and the residual weight ratio (indicated by @) relative to the weight before immersion is shown in Table 3.

表−6より、本発明例の配合A1〜6のモルタル硬化体
は、従来の吹付材(配合A 7 )に比べて強度発現が
良好であり、しかも、耐敵性が犬であることがわかる。
From Table 6, it can be seen that the cured mortar bodies of formulations A1 to 6 of the examples of the present invention have better strength development than the conventional sprayed material (formulation A 7 ), and have excellent enemy resistance.

表−6 実施例2 表−4 配合A6及びA7の結合材と表−4に示したコンクリー
トを用い、乾式吹付工法によ#)1日約10m3ずつ2
日間にわたってトンネルの吹付工事を行ない、材料のは
ねかえり(リバウンド)率を測定したところ、配合瀬乙
の結合材を用いたとき扁 は12.5%であったが配合7の結合材は24.7%で
あ−リ、本発明が優れていることが示された0実施例6 実施例1と同様な結合材及び骨材として珪砂を用い、4
×4×16crnのモルタル供試体を作製し、耐熱性の
試験を行った。供試体は、7日間気乾養生後各温度で6
時間加熱した後冷却して圧縮強度を測定した。モルタル
は、結合材;骨材比=1:6、結合材−水比工40チと
して混練したものである。その結果を表−5に示す0 表−5 本発明例(配合煮1〜6ンは従来の吹付材(配合ム7)
に比べて耐熱性が著しく優れていることがわかる。
Table 6 Example 2 Table 4 Using the binder mixes A6 and A7 and the concrete shown in Table 4, approximately 10 m3 per day was applied using the dry spraying method.
When we carried out spraying work on a tunnel for several days and measured the rebound rate of the material, we found that when using the binder with the combination Seoto, the flatness was 12.5%, but with the binder with the combination 7 it was 24.7%. %, indicating that the present invention is superior.Example 6 Using silica sand as the binder and aggregate as in Example 1,
A mortar specimen of ×4 × 16 crn was prepared and a heat resistance test was conducted. The specimens were air-dried for 7 days and then incubated at each temperature for 6 days.
After heating for a period of time, the sample was cooled and the compressive strength was measured. The mortar was kneaded with a binder:aggregate ratio of 1:6 and a binder-water ratio of 40 cm. The results are shown in Table-5.
It can be seen that the heat resistance is significantly superior to that of .

特許出願人  電気化学工業株式会社Patent applicant: Denki Kagaku Kogyo Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] 潜在水硬性を有するプレーン比表面積2,000cm”
 777以上の物質とアルカリ刺激剤とを含有してなる
結合材、水ならびに骨材を含んでなる吹付モルタル・コ
ンクリート組成物。
Plain specific surface area 2,000 cm with latent hydraulic properties
A shotcrete mortar concrete composition comprising a binder comprising a substance of 777 or more and an alkaline stimulant, water and aggregate.
JP14098982A 1982-08-16 1982-08-16 Spraying mortar concrete composition Granted JPS5930747A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14098982A JPS5930747A (en) 1982-08-16 1982-08-16 Spraying mortar concrete composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14098982A JPS5930747A (en) 1982-08-16 1982-08-16 Spraying mortar concrete composition

Publications (2)

Publication Number Publication Date
JPS5930747A true JPS5930747A (en) 1984-02-18
JPH0352420B2 JPH0352420B2 (en) 1991-08-09

Family

ID=15281549

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14098982A Granted JPS5930747A (en) 1982-08-16 1982-08-16 Spraying mortar concrete composition

Country Status (1)

Country Link
JP (1) JPS5930747A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61155476A (en) * 1984-12-27 1986-07-15 Shikoku Kaken Kogyo Co Ltd Composition for adjusting undercoat
JPS61291443A (en) * 1985-06-19 1986-12-22 電気化学工業株式会社 Thermosettable cement composition
JPH0579622B2 (en) * 1984-09-21 1993-11-04 Fuorusu Konsuruto Konmandeiits
JP2003002726A (en) * 2001-04-18 2003-01-08 Nippon Steel Corp Producing method of concrete like solid body using steel making slag
JP2004315244A (en) * 2003-04-11 2004-11-11 Denki Kagaku Kogyo Kk Spray material composition, spray material, and spraying method using it
JP6347019B1 (en) * 2017-11-10 2018-06-20 廣美 畑中 A method of manufacturing concrete with admixture to prevent deterioration.
JP6364579B1 (en) * 2018-04-03 2018-07-25 廣美 畑中 A method for producing an asphalt mixture containing a deterioration inhibitor.
JP2019532907A (en) * 2016-11-04 2019-11-14 エン−テック コーポレーションEn−Tech Corporation System and method for preparing and applying non-Portland cement materials
US11008253B2 (en) 2015-05-06 2021-05-18 En-Tech Corporation System and method for making and applying a non-Portland cement-based material
US11219920B2 (en) 2015-05-06 2022-01-11 En-Tech Corporation System and method for making and applying a non-portland cement-based material

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5229329A (en) * 1975-08-28 1977-03-05 Daiichi Shokai:Kk Device for managing pachinko equipment
JPS5258728A (en) * 1975-11-08 1977-05-14 Fudo Construction Co Method of manufacturing mortar

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5229329A (en) * 1975-08-28 1977-03-05 Daiichi Shokai:Kk Device for managing pachinko equipment
JPS5258728A (en) * 1975-11-08 1977-05-14 Fudo Construction Co Method of manufacturing mortar

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0579622B2 (en) * 1984-09-21 1993-11-04 Fuorusu Konsuruto Konmandeiits
JPS61155476A (en) * 1984-12-27 1986-07-15 Shikoku Kaken Kogyo Co Ltd Composition for adjusting undercoat
JPS61291443A (en) * 1985-06-19 1986-12-22 電気化学工業株式会社 Thermosettable cement composition
JPH0522663B2 (en) * 1985-06-19 1993-03-30 Denki Kagaku Kogyo Kk
JP2003002726A (en) * 2001-04-18 2003-01-08 Nippon Steel Corp Producing method of concrete like solid body using steel making slag
JP2004315244A (en) * 2003-04-11 2004-11-11 Denki Kagaku Kogyo Kk Spray material composition, spray material, and spraying method using it
US11008253B2 (en) 2015-05-06 2021-05-18 En-Tech Corporation System and method for making and applying a non-Portland cement-based material
US11745215B2 (en) 2015-05-06 2023-09-05 En-Tech Corporation System and method for making and applying a non-Portland-cement-based material
US11351698B2 (en) 2015-05-06 2022-06-07 En-Tech Corporation System and method for making and applying a non-Portland cement-based material
US11224894B2 (en) 2015-05-06 2022-01-18 En-Tech Corporation System and method for making and applying a non-Portland cement-based material
US11219920B2 (en) 2015-05-06 2022-01-11 En-Tech Corporation System and method for making and applying a non-portland cement-based material
JP2021181402A (en) * 2016-11-04 2021-11-25 エン−テック コーポレーションEn−Tech Corporation System and method for preparing and applying non-portland cement-based material
JP2019532907A (en) * 2016-11-04 2019-11-14 エン−テック コーポレーションEn−Tech Corporation System and method for preparing and applying non-Portland cement materials
JP2019085320A (en) * 2017-11-10 2019-06-06 廣美 畑中 Production method of concrete containing degradation-preventing admixture
JP6347019B1 (en) * 2017-11-10 2018-06-20 廣美 畑中 A method of manufacturing concrete with admixture to prevent deterioration.
JP2019183407A (en) * 2018-04-03 2019-10-24 廣美 畑中 Method for manufacturing asphalt mixture containing deterioration inhibitor
JP6364579B1 (en) * 2018-04-03 2018-07-25 廣美 畑中 A method for producing an asphalt mixture containing a deterioration inhibitor.

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Publication number Publication date
JPH0352420B2 (en) 1991-08-09

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