JPS59141447A - Accelerator for dry spraying method - Google Patents
Accelerator for dry spraying methodInfo
- Publication number
- JPS59141447A JPS59141447A JP1292783A JP1292783A JPS59141447A JP S59141447 A JPS59141447 A JP S59141447A JP 1292783 A JP1292783 A JP 1292783A JP 1292783 A JP1292783 A JP 1292783A JP S59141447 A JPS59141447 A JP S59141447A
- Authority
- JP
- Japan
- Prior art keywords
- quick
- setting
- spraying method
- cement
- present
- 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
Links
- 238000005507 spraying Methods 0.000 title claims description 8
- 239000000463 material Substances 0.000 claims description 24
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 claims description 8
- 229910001388 sodium aluminate Inorganic materials 0.000 claims description 8
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 7
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 4
- 239000011575 calcium Substances 0.000 claims description 4
- 229910052791 calcium Inorganic materials 0.000 claims description 4
- 239000004568 cement Substances 0.000 description 10
- 239000000203 mixture Substances 0.000 description 10
- 239000011398 Portland cement Substances 0.000 description 6
- 230000007774 longterm Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000010440 gypsum Substances 0.000 description 3
- 229910052602 gypsum Inorganic materials 0.000 description 3
- 235000019738 Limestone Nutrition 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Landscapes
- 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】 本発明はセメント系乾式吹付工法用急結材に関する。[Detailed description of the invention] The present invention relates to a quick-setting material for cement-based dry spraying method.
、セメント系乾式吹付工法は一般に普通ポルトランドセ
メント、骨材および急結材からなる吹伺材を空練り混合
し、これを吹伺機のノズルの先端で水と接触させながら
圧縮空気によって被覆面に吹付ける工法である。この工
法に使用される急結材は従来アルミン酸ナトリウムと炭
酸ナトリウムの混合物、あるいはカルシウムアルミネー
ト、アルミン酸ナトリウムおよび炭酸ナトリウムからな
るものが開発されていた。ｌ〜がしながら上記急結材は
急結性を鳴しているが、これらの急結材を用いた吹伺材
は圧縮強度の長期の発現が低いという欠点があ゛る。In the cement-based dry spraying method, a blowing material consisting of ordinary Portland cement, aggregate, and quick-setting material is mixed in the air, and this is brought into contact with water at the tip of a blowing machine's nozzle and sprayed onto the coated surface using compressed air. This is a method of attaching. The quick-setting materials used in this construction method have previously been developed as a mixture of sodium aluminate and sodium carbonate, or in combination with calcium aluminate, sodium aluminate, and sodium carbonate. Although the above-mentioned quick-setting materials are said to have quick-setting properties, the blowing materials using these quick-setting materials have the disadvantage that long-term development of compressive strength is low.
本発明者らはこの欠点を改善するだめ種々研究した結果
、カルシウムサルフォアルミネートを主成分とする急結
材をセメントに少量添加することにより上記欠点を解消
できることを見出］一本発明を完成した。すなわち本発
明の要旨はアルミン酸ナトリウム５〜５０重ｔ ％、カ
ルシウムサルフォアルミネート２０〜６０重計係および
硫酸カルシウム５〜６０重１１以下単に係と扁う）の割
合で配合さり、た急結材であ゛る。The present inventors conducted various studies to improve this drawback and found that the above drawback could be overcome by adding a small amount of quick-setting agent containing calcium sulfoaluminate as a main component to cement. completed. That is, the gist of the present invention is that sodium aluminate is mixed in a proportion of 5 to 50% by weight, calcium sulfoaluminate is 20 to 60% by weight, and calcium sulfate is 5 to 60% by weight (hereinafter simply referred to as 11% by weight), and It is a binding material.
以ＴＫ本発明の詳細な説明する。The present invention will now be described in detail.
本発明で使用するカルシウムサルフォアルミネートとは
Ｃａ０・３Ａｔ２０３・Ｃａ５０４（以下Ｃ３Ａ３Ｃ８
と略称す゛る）なる構造を有する物質である。このもの
は一般に石灰石などの石灰質原料、ボーキサイトなどの
アルミナ質原料、および石こうを、得られるクリンカ中
にＣ３Ａ３Ｃ８が生成するように適宜に配合して粉砕し
た混合物、あるいは前記各原料を個別に粉砕したのち、
所定の割合で混ぜた混合物を１２００〜１３００℃で慣
用の設備、例えばロータリーキルンで焼成してクリンカ
と１．て得らね、る。得ら力、たクリンカに―、Ｃ３Ａ
３Ｃ８のほか２ ＣａＯ・Ｓ ｉ０２や４（ΣａＯ−Ａ
ｔ２０３・■・’ｅ２０３等の鉱物が含有さカーる。Calcium sulfoaluminate used in the present invention is Ca0.3At203.Ca504 (hereinafter C3A3C8
It is a substance with a structure that is abbreviated as "." This product is generally a mixture of calcareous raw materials such as limestone, alumina raw materials such as bauxite, and gypsum mixed appropriately so as to produce C3A3C8 in the resulting clinker and then ground, or a mixture of the above-mentioned raw materials individually ground. after,
A mixture mixed in a predetermined ratio is fired at 1200 to 1300°C in a conventional equipment such as a rotary kiln to form clinker and 1. I can't get it. Get the power, get the clinker-, C3A
In addition to 3C8, 2 CaO・S i02 and 4 (ΣaO-A
Contains minerals such as t203, ■, and 'e203.
本発明で使用さり、る硫酸カルシウムは石こうて２水、
半水および無水のもののいずれも使用用能である（以下
これらを総称してＣ８と略称する）。The calcium sulfate used in the present invention is gypsum 2 water,
Both semi-aqueous and anhydrous forms can be used (hereinafter collectively referred to as C8).
−１だアルミン酸ナトリウムは通鹿市販さね、でいるも
のが用いられる。-1 Sodium aluminate is commercially available in Tsuka.
本発明の急結材はＣ３Ａ３Ｃ８２０〜６０幅、ＣＳ５〜
６０係、アルミン酸ナトリウム５〜５０９６の配合割合
であるが、Ｃ１Ａ５（、’Ｓの配合割合が２０係未満の
場合は良好な急結性が得られず、吹付材の硬化体の長期
強度の発現性も悪り、首だ６０係を超えても同様の現象
が生じる。寸だＣ８の配合割合が５％未満あるいＣ６０
係を超えカーばＣ３Ａ３Ｃ８と同じように急結性を損な
う、−ヒに硬化体の長期３強度の」びが低下するか、あ
るいは強度低下が起こる。さらにアルミン酸ナトリウム
の配合割合が５％未満の場合には急結性が１ψらｈず、
捷だ５０係を超えると急結性を損なうたけでなく、前記
硬化体の強度低下の原因にもなる。The quick setting material of the present invention is C3A3C820~60 width, CS5~
If the blending ratio of C1A5(,'S) is less than 20 parts, good quick-setting properties cannot be obtained, and the long-term strength of the cured product of the spray material may deteriorate. Expression performance is also poor, and the same phenomenon occurs even when the concentration exceeds 60.The blending ratio of Sunda C8 is less than 5% or C60
If the temperature is exceeded, the rapid setting property will be impaired in the same way as C3A3C8, and the long-term strength of the cured product will decrease or the strength will decrease. Furthermore, when the blending ratio of sodium aluminate is less than 5%, the rapid setting is less than 1ψ,
If the stiffness exceeds 50, it not only impairs rapid setting but also causes a decrease in the strength of the cured product.
なお、本発明の急結材の主要成分であるＣ３Ａ３Ｃ８と
Ｃ８とを合量して、５ｏａ７Ａｔｚｏ３（モル比） （
１，９であれはより望ましい長期強度の発現効果か得ら
れる。In addition, the total amount of C3A3C8 and C8, which are the main components of the quick-setting material of the present invention, is 5oa7Atzo3 (molar ratio) (
1 and 9, a more desirable long-term strength development effect can be obtained.
以上の諸原料を用いて本発明の急結材を製造するにはＣ
３Ａ３Ｃ８を含有するクリンカ、Ｃ８およびアルミン酸
ナトリウムをそれぞれ別個に粉砕して所要の糺放物にな
るよう混合するか、あるいは所望の配合設備にしたがっ
て混合粉砕する。ここで行なわ力、る粉砕方法および混
合方法は従来使用されている設備が利用され、る。To produce the quick-setting material of the present invention using the above raw materials, C
The clinker containing 3A3C8, C8 and sodium aluminate are each ground separately and mixed to form the desired compact, or mixed and ground according to the desired compounding equipment. The power, crushing method and mixing method performed here utilize conventionally used equipment.
かくして得られた急結材は乾式吹付工法で使用され、る
際、それに用いるセメントに対して、３〜３０ｑ６添加
される。その添加量が３係未満では必要な急結性が得ら
れず、また３０係を超えれば強度の低下をきたす。The quick-setting material thus obtained is used in the dry spraying method, and when it is used, 3 to 30q6 is added to the cement used therein. If the amount added is less than 3 parts, the necessary rapid setting property cannot be obtained, and if it exceeds 30 parts, the strength will decrease.
本発明の急結材を用いたときの乾式吹付工法としては従
来の方法がそのま１利用される。なお本発明の急結材に
対して用いられるセメントハ普通ポルトランドセメント
、早強ポルトランドセメントなどのポルトランドセメン
ト、フライアンシュセンント、高炉スラグセメントのよ
うな混合セメント等であり、それらが単独もしくは混合
されて用いられる。When using the quick-setting material of the present invention, the conventional dry spraying method can be used as is. The cement used for the rapid setting material of the present invention is ordinary Portland cement, Portland cement such as early-strength Portland cement, mixed cement such as fry cement, blast furnace slag cement, etc., and these may be used alone or in combination. It is used as
本発明の急結材を乾式吹付工法に採用した場合、従来の
急結材を用いたときに比し、吹利硬化体の急結性はもち
ろんのこと、長期強度が大幅に改善される。When the quick-setting material of the present invention is employed in a dry spraying method, the long-term strength as well as the quick-setting properties of the blown hardened product are greatly improved compared to when conventional quick-setting materials are used.
次に実施例により本発明を説明する。Next, the present invention will be explained with reference to Examples.
実施例
Ｃ３Ａ、、、 Ｃ８を含崩するクリンカの製造石灰石（
ｉｇ １ｏｓｓ ４’２．３ ％、 ＣａＯ５３，７％
）、石こう（ｉｇ １ｏｓｓ １５．０係、５Ｏ３３
５，８チ）および焼市−キザイト（Ａ、ｔ２０３７５．
’７係）を粉砕しそれそ冶４０．２５．３５各重量部の
割合で混合ｊ−で得た混合物をロータリーキルンを用い
て１２００〜１３００℃で焼成１−７だ。Example C3A, ... Production of clinker containing C8 Limestone (
ig 1oss 4'2.3%, CaO53.7%
), gypsum (ig 1oss 15.0 section, 5O33
5,8chi) and Yakiichi-Kizaito (A, t20375.
The mixture obtained in 1-7 was ground at 1200-1300°C using a rotary kiln.
得られ、たクリンカの化学分析値および主要鉱物組成を
表１に示す。Table 1 shows the chemical analysis values and main mineral composition of the clinker obtained.
（以下余白）
本発明急結材の製造
上記クリンカ、工業用アルミン酸すトリウｌ、（Ａｔ２
０．ｑ ４ｓ 係、Ｎａ２Ｏ２１％ ）および無水石こ
う（ｉｇ １ｏｓｓ １．９係、８０３５４．６係）を
表２に示す配合割合に慣用のボールミルで混合粉砕して
各種の組成物を得だ。(Left below) Production of quick-setting material of the present invention The above clinker, industrial aluminium chloride, (At2
0. q 4s, Na2O2 1%) and anhydrous gypsum (ig 1oss 1.9, 80354.6) were mixed and ground in a conventional ball mill in the proportions shown in Table 2 to obtain various compositions.
こわ５らの組成物を普通ポルトランドセメントに対し５
係添加し、水セメント比５５係、セメント砂比Ａのモル
タルでＡＳＴＭＣ４０３−６５Ｔのブロクター貫入抵抗
法にしたがって凝結時間を測定し、得らｈ、た結果を表
２に示す。なお市販のＣ１□Ａ７系（１，２ＣａＯ−７
ｋ１２０３を主成分とする）急結材についても同様の試
験を行なった。A composition of 5% stiffness was added to 5% of ordinary Portland cement.
The setting time was measured according to the Broctor penetration resistance method of ASTM C403-65T using a mortar with a water-to-cement ratio of 55 parts and a cement-to-sand ratio of A. The results are shown in Table 2. In addition, commercially available C1□A7 series (1,2CaO-7
A similar test was also conducted on a quick-setting material (mainly containing k1203).
その結果、Ｃ３Ａ、Ｃ８２０〜６０係、Ｃ８５〜６０％
およびアルミン酸ナトリウム５〜５０俸からなる組成物
の急結性は市販品に比して遜色のないことがわかった。As a result, C3A, C820-60, C85-60%
It was found that the rapid setting of a composition consisting of 5 to 50 doses of sodium aluminate was comparable to that of a commercially available product.
（＞％Ｘ′下へ台ジ１実施例
急結イ藷の添加量の影響
実験例】の実施例２の急結材を普通ポルトランドセメン
トに対して種々添加量を変えて実験例１で行なった諸条
件、測定方法で貫入抵抗値を測定した。(>% The penetration resistance value was measured using the various conditions and measurement method.
得らり、た結果を表３に示した。The results obtained are shown in Table 3.
その結果、本発明の急結材を普通ポルトランドセメント
に添加ｆＲ′３〜３ｏ係の範囲で十分な急結性が得られ
ることが判明した。As a result, it was found that sufficient rapid setting properties can be obtained when the quick setting material of the present invention is added to ordinary Portland cement at an fR' of 3 to 3o.
（以下余白）
急結材の添加■）と圧縮強度との関係
実験例１の実施例に示した本発明の急結材の添加ｂ；を
種々変えた場合および市販のＣ１□Ａ７を」三成分とす
る急結材とについて表４に示す°配合の吹付コンクリー
トを掘さく中のトンネル内の数か所に乾式吹付工法にし
たがって吹付施工を行なった。その施工現場より表４に
示す各材令用の直径５．ｏｎ、高さ１０（７７１のコア
供試体を採取し、それぞれ圧縮強度を測定しその結果を
表４に示す。(Blank below) Relationship between addition of quick-setting agent (■) and compressive strength When the addition (b) of the quick-setting agent of the present invention shown in the example of Experimental Example 1 was variously changed, and when commercially available C1□A7 was Shotcrete with the composition of quick setting material as shown in Table 4 was sprayed at several locations in the tunnel being excavated according to the dry spraying method. From the construction site, the diameter of each material shown in Table 4 is 5. on, height 10 (771) core specimens were taken, and the compressive strength of each was measured. The results are shown in Table 4.
ｌ・ランドセメントに添加量３〜３０％の範囲で混入し
た吹伺コンクリートの長期相合の圧縮強度は著］〜く高
く、−１だ市販の急結材を用いたときに比１〜、強度の
改善が顕著であることが判明した。The long-term compressive strength of blast concrete mixed with l.land cement in the range of 3 to 30% is extremely high, and -1 compared to when commercially available quick-setting materials are used. The improvement was found to be significant.
（以下余白） ２６２−(Margin below) 262-
Claims (1)
フォアルミネート２０〜６０ 重＠％ オよび硫酸カル
シウム５〜６０重＠係からなる乾式吹付工法用急結材Rapid setting material for dry spraying method consisting of sodium aluminate 5-50% weight, calcium sulfoaluminate 20-60% weight and calcium sulfate 5-60% weight
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1292783A JPS59141447A (en) | 1983-01-31 | 1983-01-31 | Accelerator for dry spraying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1292783A JPS59141447A (en) | 1983-01-31 | 1983-01-31 | Accelerator for dry spraying method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59141447A true JPS59141447A (en) | 1984-08-14 |
Family
ID=11818951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1292783A Pending JPS59141447A (en) | 1983-01-31 | 1983-01-31 | Accelerator for dry spraying method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59141447A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63123848A (en) * | 1986-11-10 | 1988-05-27 | 麻生セメント株式会社 | Admixing agent for preparing suspension for cement milk process |
| EP0769482A1 (en) * | 1995-10-17 | 1997-04-23 | Denki Kagaku Kogyo Kabushiki Kaisha | Spraying material and spraying method employing it |
| CN108883989A (en) * | 2016-03-22 | 2018-11-23 | Sika技术股份公司 | Composition based on calcium oxide |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5016718A (en) * | 1973-06-15 | 1975-02-21 | ||
| JPS5532799A (en) * | 1979-08-31 | 1980-03-07 | Denki Kagaku Kogyo Kk | Quickly hardenable cement additive composition |
| JPS5627457A (en) * | 1979-08-14 | 1981-03-17 | Fujitsu Ltd | Parity prediction system of shifter |
| JPS56163372A (en) * | 1980-05-20 | 1981-12-15 | Nippon Shiika Kk | Addition of accelerator for concrete blasting method |
| JPS57183339A (en) * | 1981-04-30 | 1982-11-11 | Sumitomo Cement Co | Super-quick setting cement |
-
1983
- 1983-01-31 JP JP1292783A patent/JPS59141447A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5016718A (en) * | 1973-06-15 | 1975-02-21 | ||
| JPS5627457A (en) * | 1979-08-14 | 1981-03-17 | Fujitsu Ltd | Parity prediction system of shifter |
| JPS5532799A (en) * | 1979-08-31 | 1980-03-07 | Denki Kagaku Kogyo Kk | Quickly hardenable cement additive composition |
| JPS56163372A (en) * | 1980-05-20 | 1981-12-15 | Nippon Shiika Kk | Addition of accelerator for concrete blasting method |
| JPS57183339A (en) * | 1981-04-30 | 1982-11-11 | Sumitomo Cement Co | Super-quick setting cement |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63123848A (en) * | 1986-11-10 | 1988-05-27 | 麻生セメント株式会社 | Admixing agent for preparing suspension for cement milk process |
| JPH0242778B2 (en) * | 1986-11-10 | 1990-09-26 | ||
| EP0769482A1 (en) * | 1995-10-17 | 1997-04-23 | Denki Kagaku Kogyo Kabushiki Kaisha | Spraying material and spraying method employing it |
| CN108883989A (en) * | 2016-03-22 | 2018-11-23 | Sika技术股份公司 | Composition based on calcium oxide |
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