JPS62199407A - Kneading method of concrete-mortar - Google Patents
Kneading method of concrete-mortarInfo
- Publication number
- JPS62199407A JPS62199407A JP4319986A JP4319986A JPS62199407A JP S62199407 A JPS62199407 A JP S62199407A JP 4319986 A JP4319986 A JP 4319986A JP 4319986 A JP4319986 A JP 4319986A JP S62199407 A JPS62199407 A JP S62199407A
- Authority
- JP
- Japan
- Prior art keywords
- aggregate
- water
- cement
- 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
Links
- 239000004570 mortar (masonry) Substances 0.000 title claims description 10
- 238000004898 kneading Methods 0.000 title claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 239000004568 cement Substances 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 4
- 238000006703 hydration reaction Methods 0.000 description 5
- 230000008014 freezing Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 239000002775 capsule Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000004576 sand 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/06—Inhibiting the setting, e.g. mortars of the deferred action type containing water in breakable containers ; Inhibiting the action of active ingredients
- C04B40/0683—Inhibiting the setting, e.g. mortars of the deferred action type containing water in breakable containers ; Inhibiting the action of active ingredients inhibiting by freezing or cooling
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】
（ａ）、産業上の利用分野
本発明は、小量の水で骨材とセメントとの良好な付着性
を維持することの出来るコンクリート・モルタルの混練
り方法に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a method for mixing concrete and mortar that can maintain good adhesion between aggregate and cement using a small amount of water.
（ｂ）、従来の技術
骨材の周囲にセメントを十分に行き渡らせ（付着させ）
で、凝固後のコンクリート・モルタルにおいて、骨材を
有効に作用させろために、コンクリート・モルタルを混
練りする場合、従来、理論水分量よりも多くの水を投入
してコンクリート・モルタルの流動性を高めていた。(b), conventional technology: sufficiently spread (adhere) cement around the aggregate;
Conventionally, when mixing concrete and mortar in order to make the aggregate work effectively in the concrete and mortar after solidification, more water than the theoretical water content is added to increase the fluidity of the concrete and mortar. It was increasing.
（Ｃ）０発明が解決しようとする問題点しかし、通常、
理論水分量よりも水が多くなると、凝固後のセメント自
体の強度や耐久性が劣化する欠点が有る。(C)0The problem that the invention aims to solveHowever, usually,
If the water content exceeds the theoretical water content, there is a drawback that the strength and durability of the cement itself deteriorates after solidification.
本発明は、前述の欠点を解消すべく、少ない水分量でも
骨材の周囲にセメントを十分に付着させろことが出来ろ
コンクリート・モルタルの混練り方法を提供することを
目的とするものである。SUMMARY OF THE INVENTION In order to eliminate the above-mentioned drawbacks, it is an object of the present invention to provide a method for mixing concrete and mortar that allows sufficient adhesion of cement around aggregates even with a small amount of water.
（ｄ）０問題点を解決するための手段
即ち、本発明は、予め骨材をその含水状態で冷凍してお
き、セメントとの空練りに際して該冷凍された骨材を投
入して混合し、前記骨材の周囲に該骨材から溶け出した
水によりセメントの膜を形成するようにして構成される
。(d) Means for solving the problem of zero, that is, the present invention, consists of freezing the aggregate in advance in its hydrated state, and adding and mixing the frozen aggregate at the time of dry kneading with cement. It is constructed so that a cement film is formed around the aggregate by water dissolved from the aggregate.
（ｅ）３作用
上記した構成により本発明は、混練りに際して、骨材の
周囲に氷結していた水が溶けて周囲のセメントと水和し
、該骨材の周囲にセメントの膜が形成されるように作用
する。(e) 3 Effects Due to the above-described structure, the present invention has the advantage that during kneading, water that has frozen around the aggregate melts and hydrates with the surrounding cement, and a cement film is formed around the aggregate. It acts like this.
（ｆ）、実施例 以下、本発明の実施例を具体的に説明する。(f), Example Examples of the present invention will be specifically described below.
コンクリート・モルタルを混線すする場合、まず砂利等
の粗骨材及び砂等の細骨材を水に浸して十分にその含水
率を高め、その状態で冷凍保存しておく。すると、骨材
の表面には水が付着した状態で凍る。次に、セメントと
該冷凍状態の骨材を空練りするが、この空練りは氷点下
の雰囲気であっても、大気温度中で行ってもよい。氷点
下の雰囲気で空練りを行うと、セメント及び骨材は全く
の乾燥状態で混合されるが、大気温度中で行うと、骨材
の周囲に凍結した状態で付着していた氷が溶けて、周囲
のセメントと水和反応を起こし、骨材の周囲に薄いセメ
ントの膜が形成される。When mixing concrete and mortar, first soak coarse aggregate such as gravel and fine aggregate such as sand in water to sufficiently increase its moisture content, and then store it in a frozen state. The aggregate then freezes with water adhering to its surface. Next, the cement and the frozen aggregate are dry kneaded, and this dry kneading may be performed in an atmosphere below freezing or at atmospheric temperature. When air mixing is performed in an atmosphere below freezing, the cement and aggregates are mixed in a completely dry state, but when mixing is performed at atmospheric temperature, the ice that has been frozen around the aggregates melts. A hydration reaction occurs with the surrounding cement, forming a thin cement film around the aggregate.
この状態で、セメントと骨材が均一に混合されると、大
気温度状態で、該混合されたセメントに対して水を加え
て水練りを行う。すると、それまで氷点下の状態で空練
りされてきた骨材の周囲に凍結した状態で付着していた
氷が溶けて、周囲のセメントと水和反応を起こし、骨材
の周囲に薄いセメントの膜が形成されると共に、加えら
れた水とセメントが水和反応を開始する（前述の大気温
度での空練りを行った場合には、骨材の周囲のセメント
の膜は既に形成されているので、投入された水とセメン
トとの水和反応のみが直ちに開始される）。こうして、
骨材の周囲には、冷凍状態にあった骨材の表面から溶出
した水によりセメントの殻が出来、従って、外部から投
入された水により水和反応が開始されたセメントは容易
に骨材の周囲のセメントと融着し、セメントと骨材は極
めて良好な状態で水練９される。従って、この際に、投
入する水の量は、骨材周囲へのセメントの回りを考慮す
る必要が無いので、通常の冷凍骨材を使用しない場合に
比して大幅に少なくすることが出来る。When cement and aggregate are mixed uniformly in this state, water is added to the mixed cement to perform water kneading at atmospheric temperature. Then, the ice that had been frozen around the aggregate, which had been dry kneaded at sub-zero temperatures, melted and caused a hydration reaction with the surrounding cement, forming a thin cement film around the aggregate. is formed, and the added water and cement begin a hydration reaction. , only the hydration reaction between the input water and cement starts immediately). thus,
A cement shell is formed around the aggregate due to the water eluted from the surface of the frozen aggregate, and therefore, the cement that has started the hydration reaction due to the water introduced from the outside can easily become the aggregate. It fuses with the surrounding cement, and the cement and aggregate are mixed in water in an extremely good condition. Therefore, at this time, the amount of water to be added can be significantly reduced compared to the case where ordinary frozen aggregate is not used, since there is no need to consider the circulation of cement around the aggregate.
なお、空練り後の、セメントに対する加水態様はどのよ
うな態様でもよく、通常の液体状態の水を加える他に、
粒子状の氷の形、マイクａカプセルに封入した形、更に
は吸水ポリマに水を含浸させた形で加水する等、種々の
態様が考えられるものである。Note that the manner in which water is added to the cement after dry kneading may be in any manner, and in addition to adding water in a normal liquid state,
Various forms of water can be considered, such as adding water in the form of particulate ice, encapsulating it in a microphone-a capsule, and further adding water in the form of a water-absorbing polymer impregnated with water.
（ｇ）０発明の効果
以上、説明したように、本発明によれば、予め骨材をそ
の含水状態で冷凍しておき、セメントとの空練りに際し
て該冷凍された骨材を投入して混合し、前記骨材の周囲
に、該骨材から溶け出した水によりセメントの膜を形成
するようにして構成したので、セメントの骨材に対する
付着性が向上し、水練りに際して投入される水の量を少
なくすることが出来、凝固後のコンクリート・モルタル
の強度及び耐久性を向上させることが出来る。(g) 0 Effects of the Invention As explained above, according to the present invention, the aggregate is frozen in a hydrated state in advance, and the frozen aggregate is added and mixed during air mixing with cement. However, since a cement film is formed around the aggregate by the water dissolved from the aggregate, the adhesion of cement to the aggregate is improved, and the water added during water mixing is improved. The amount can be reduced, and the strength and durability of solidified concrete and mortar can be improved.
出願人 三井建設株式会社 代理人 弁理士 相１）伸二 （ほか１名）Applicant: Mitsui Construction Co., Ltd. Agent Patent attorney Phase 1) Shinji (1 other person)
Claims (1)
おいて、 予め骨材をその含水状態で冷凍しておき、 セメントとの空練りに際して該冷凍された 骨材を投入して混合し、 前記骨材の周囲に、該骨材から溶け出した 水によりセメントの膜を形成するようにして構成したコ
ンクリート・モルタルの混練り方法。[Scope of Claims] A method for mixing concrete and mortar in which aggregate and cement are mixed in the air, and then water is added and mixed in water. A method for kneading concrete and mortar, comprising: adding and mixing the frozen aggregate; and forming a cement film around the aggregate with water dissolved from the aggregate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61043199A JPH0655368B2 (en) | 1986-02-28 | 1986-02-28 | Concrete / mortar kneading method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61043199A JPH0655368B2 (en) | 1986-02-28 | 1986-02-28 | Concrete / mortar kneading method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62199407A true JPS62199407A (en) | 1987-09-03 |
| JPH0655368B2 JPH0655368B2 (en) | 1994-07-27 |
Family
ID=12657258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61043199A Expired - Lifetime JPH0655368B2 (en) | 1986-02-28 | 1986-02-28 | Concrete / mortar kneading method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0655368B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63319109A (en) * | 1987-06-23 | 1988-12-27 | Shimizu Constr Co Ltd | Method and apparatus for producing concrete |
| JPS63319233A (en) * | 1987-06-23 | 1988-12-27 | Shimizu Constr Co Ltd | Production of cooled aggregate and device therefor |
| JPS645806A (en) * | 1987-06-27 | 1989-01-10 | Shimizu Construction Co Ltd | Method and device for manufacturing concrete |
| JP2007031195A (en) * | 2005-07-26 | 2007-02-08 | Hazama Corp | Method for manufacturing mortar or concrete having adsorption function |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4977919A (en) * | 1972-11-07 | 1974-07-26 |
-
1986
- 1986-02-28 JP JP61043199A patent/JPH0655368B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4977919A (en) * | 1972-11-07 | 1974-07-26 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63319109A (en) * | 1987-06-23 | 1988-12-27 | Shimizu Constr Co Ltd | Method and apparatus for producing concrete |
| JPS63319233A (en) * | 1987-06-23 | 1988-12-27 | Shimizu Constr Co Ltd | Production of cooled aggregate and device therefor |
| JPS645806A (en) * | 1987-06-27 | 1989-01-10 | Shimizu Construction Co Ltd | Method and device for manufacturing concrete |
| JP2007031195A (en) * | 2005-07-26 | 2007-02-08 | Hazama Corp | Method for manufacturing mortar or concrete having adsorption function |
| JP4634248B2 (en) * | 2005-07-26 | 2011-02-16 | 株式会社間組 | Method for producing mortar or concrete having adsorption function |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0655368B2 (en) | 1994-07-27 |
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