JP2001219419A - Method for manufacturing fly-ash mortar - Google Patents

Method for manufacturing fly-ash mortar

Info

Publication number
JP2001219419A
JP2001219419A JP2000035512A JP2000035512A JP2001219419A JP 2001219419 A JP2001219419 A JP 2001219419A JP 2000035512 A JP2000035512 A JP 2000035512A JP 2000035512 A JP2000035512 A JP 2000035512A JP 2001219419 A JP2001219419 A JP 2001219419A
Authority
JP
Japan
Prior art keywords
fly ash
mixer
mortar
ash mortar
fly
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
JP2000035512A
Other languages
Japanese (ja)
Inventor
Kunihiro Tsukamoto
国広 塚本
Tetsuji Ogata
哲治 緒方
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.)
KAIHATSU KOJI KK
Electric Power Development Co Ltd
Original Assignee
KAIHATSU KOJI KK
Electric Power Development Co Ltd
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 KAIHATSU KOJI KK, Electric Power Development Co Ltd filed Critical KAIHATSU KOJI KK
Priority to JP2000035512A priority Critical patent/JP2001219419A/en
Publication of JP2001219419A publication Critical patent/JP2001219419A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028Aspects relating to the mixing step of the mortar preparation
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a method for continuously manufacturing a large quantity of a fly-ash mortar having stable quality and easy to be finely regulated at a metering amount and a supplying amount of a material at a high production efficiency. SOLUTION: The method for manufacturing the fly-ash mortar comprises the steps of (1) mixing a fly-ash with a cement at a predetermined ratio to a homogeneously mixed powder, (2) continuously supplying the mixed powder to a paste mixer of an extrusion die together with sea water and kneading the mixture until passing the powder through the mixer, (3) continuously supplying the kneaded fly-ash mortar to one of at least two batch type mixers and continuously subsequently supplying, after the predetermined amount is supplied, the mortar to another back mixer, (4) forming the fly-ash mortar sufficiently kneaded to the degree of not changing physical properties of the material by additionally kneading for a predetermined time in the supplied mixer, and (5) discharging the formed fly-ash mortar alternately from at least the two mixers to a lower part.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、フライアッシュモ
ルタルの製造方法に関し、特に石炭火力発電所等から発
生するフライアッシュを主成分とし、これにセメントと
水を添加し混練するフライアッシュモルタルの連続製造
方法に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing fly ash mortar, and more particularly, to a continuous fly ash mortar in which fly ash generated from a coal-fired power plant or the like is used as a main component, to which cement and water are added and kneaded. It relates to a manufacturing method.

【0002】[0002]

【従来の技術】火力発電所等から発生するフライアッシ
ュを主成分とし、これにセメント、水を混練したフライ
アッシュモルタル(通常フライアッシュセメントスラリ
ーとも称される)は、硬化性を有し水中分離もほとんど
ないことから、遮水護岸壁構造体を形成する水中型枠内
への中詰材として大量に利用されたり(特公平5−77
804号、特開平10−37158号)、或いは海や湖
沼等の水底へ自由沈降させて硬化させるしゃ水材料とし
ても利用されてきている(特開昭59−118908号
や特開昭60−139381号)。その他に人口魚礁等
の海中構造物やその他の成形材料にも利用されてきてい
る。
2. Description of the Related Art Fly ash mortar, which is mainly composed of fly ash generated from a thermal power plant and the like and kneaded with cement and water (usually also referred to as fly ash cement slurry), has curability and separates in water. Since it is almost nonexistent, it is used in large quantities as a filling material in the underwater formwork that forms the seepage protection pier structure (Japanese Patent Publication No. 5-77).
No. 804, JP-A-10-37158), or as a water-repellent material which is allowed to settle to the bottom of the sea or lake and harden by free settling (JP-A-59-118908 and JP-A-60-139381). issue). It has also been used for underwater structures such as artificial reefs and other molding materials.

【0003】従来、フライアッシュとセメント及び海水
(または水でもよく、以下海水で説明する)を混練する
場合は、それぞれ所定の割合に応じて計量を行い、計量
を終えた粉体と海水とを同時にミキサーに投入して混練
している。混練を終えた混練物が排出された後、また同
様に計量、混練を繰り返すいわゆるバッチ処理を行って
いる。一般に粉体と海水とをミキサー内に同時に投入し
て均一に混練する場合、例えばスランプ25cm程度の
モルタル成形材とするには、粘性が高いため材料を2〜
3回に分け投入して混練しなければならず、相当の混練
時間を要している。また混練を終えて排出された後で、
空になったミキサーに再度初めから材料を投入し、同様
な混練を行うことから大量に製造を行うことは困難であ
った。
Conventionally, when kneading fly ash, cement and seawater (or water, which will be described below as seawater), the powder is weighed in accordance with a predetermined ratio, and the weighed powder and seawater are mixed. At the same time, they are put into a mixer and kneaded. After the kneaded material after the kneading is discharged, a so-called batch process in which measurement and kneading are repeated in the same manner is performed. In general, when powder and seawater are simultaneously put into a mixer and uniformly kneaded, for example, to make a mortar molding material of about 25 cm slump, the material is 2 to 2 because of high viscosity.
The kneading must be carried out in three batches, which requires a considerable kneading time. In addition, after being finished after kneading,
It was difficult to mass-produce the material from the beginning by again putting the material into the empty mixer and performing the same kneading.

【0004】また、フライアッシュを主成分とする硬化
体混練物をより短時間に均一に混練できるとともに、打
設後の強度を向上させることができる硬化体混練物の混
練方法として特開昭61−89809号が提案されてい
る。この方法では、フライアッシュとセメント粉体のみ
をミキサーに投入し均一に混合する高速混練工程と、次
いで水、混和剤を添加して混練する中速混練工程と、打
設後の強度向上のために短時間の低速混練工程を順次行
うことが提案されている。しかしながら、この方法も基
本的にはミキサー1台だけを利用するバッチ処理方式で
あって、バッチ処理毎に材料を計量し投入したり、途中
でミキサー回転数を3段階に変更する等、生産効率面で
も問題がある。
Japanese Patent Laid-Open Publication No. Sho 61 discloses a method of kneading a cured product kneaded material which can uniformly knead a cured product kneaded material containing fly ash as a main component in a shorter time and improve the strength after casting. No. -89809 has been proposed. In this method, only a fly ash and cement powder are put into a mixer, a high-speed kneading step of uniformly mixing and then water and a medium-speed kneading step of kneading by adding an admixture, and for improving the strength after casting. It is proposed to sequentially carry out a short-time low-speed kneading step. However, this method is also a batch processing method that basically uses only one mixer, and the production efficiency is improved by weighing and charging the material for each batch processing, and changing the mixer rotation speed to three stages during the processing. There is also a problem in terms of aspects.

【0005】[0005]

【発明が解決しようとする課題】一般に主材料のフライ
アッシュの品質が変動した場合、その都度スランプが変
動しないように海水量を微調整することが必要である
が、バッチ処理方式では、海水量を微調整することが困
難であり、その結果得られるフライアッシュモルタルの
品質が不均一となりやすい。従ってかかる現状に鑑み
て、本発明は、材料の計量と供給量の微調整が容易で、
品質の安定したフライアッシュモルタルを生産効率良く
大量に製造する方法を提供することを目的とするもので
ある。
Generally, when the quality of the fly ash of the main material fluctuates, it is necessary to finely adjust the amount of seawater so that the slump does not fluctuate each time. Is difficult to fine-tune, and the resulting fly ash mortar tends to have non-uniform quality. Therefore, in view of the current situation, the present invention makes it easy to fine-tune the material measurement and supply amount,
It is an object of the present invention to provide a method for mass-producing fly ash mortar with stable quality with high production efficiency.

【0006】[0006]

【課題を解決するための手段】上記課題を解決するため
に種々検討の結果、連続押出型のペーストミキサーと少
なくとも2台設置したバッチ式ミキサーを組み合わせる
本発明を完成した。即ち、本発明は、フライアッシュを
主材料とし、これに少量のセメントと適量の海水または
水を配合し混練するフライアッシュモルタルの製造方法
において、 フライアッシュとセメントを予め所定の比率で混合し
均質混合粉体とした後、 該均質混合粉体を、海水または水と共に押出型のペー
ストミキサーへ連続的に供給して該ペーストミキサー内
を通過するまでの間練り混ぜること、 該練り混ぜたフライアッシュモルタルは、連続的に少
なくとも2台設置したバッチ式ミキサーの一方へ供給
し、所定量供給後は引き続き別のバッチ式ミキサーへ連
続的に供給すること、 供給されたバッチ式ミキサー内では、所定時間追練り
を行って材料の性状が変化しない程度まで十分に混練さ
れたフライアッシュモルタルを形成すること、 形成されたフライアッシュモルタルは、少なくとも2
台のバッチ式ミキサーから交互に下部へ排出させるこ
と、以上の組み合わせ工程を順次行うことを特徴とする
フライアッシュモルタルの製造方法である。
As a result of various studies to solve the above problems, the present invention has been completed in which a continuous extrusion type paste mixer and at least two batch type mixers are installed. That is, the present invention relates to a method for producing fly ash mortar, in which fly ash is used as a main material, and a small amount of cement and an appropriate amount of seawater or water are mixed and kneaded. After forming the mixed powder, the homogenous mixed powder is continuously supplied to an extruded paste mixer together with sea water or water and kneaded until the powder passes through the paste mixer. The kneaded fly ash The mortar is continuously supplied to one of at least two batch mixers, and after a predetermined amount is supplied, continuously supplied to another batch mixer. In the supplied batch mixer, the mortar is supplied for a predetermined time. Performing fly kneading to form a sufficiently kneaded fly ash mortar to such an extent that the properties of the material do not change; Lee ash mortar, at least 2
A method for producing fly ash mortar, characterized by alternately discharging a batch-type mixer to a lower portion and sequentially performing the above-described combination steps.

【0007】[0007]

【発明の実施の形態】以下、本発明の実施の形態を詳細
に説明する。本発明は、石炭火力発電所等で多量に排出
される石炭灰の大部分を占めるフライアッシュ(集塵装
置によって集められたもの)を主材料とする。また、フ
ライアッシュに配合するセメントとしては特に限定され
ず、通常の水硬性を有するものであればよく、ポルトラ
ンドセメント等の単味セメント、各種の混合ポルトラン
ドセメント等が使用できる。またフライアッシュに対す
るセメントの配合量は多い程、強度面では有利である
が、コスト面では不利となるので、両者の混合物中でセ
メントが10wt%以下、好ましくは3〜10wt%の
範囲内となるように配合することが望ましい。
Embodiments of the present invention will be described below in detail. The present invention is mainly based on fly ash (collected by a dust collector), which occupies most of coal ash discharged in large quantities from coal-fired power plants and the like. The cement to be added to the fly ash is not particularly limited as long as it has ordinary hydraulic properties, and plain cements such as Portland cement and various mixed Portland cements can be used. Also, the greater the amount of cement to fly ash, the more advantageous in terms of strength, but disadvantageous in terms of cost. Therefore, the amount of cement in the mixture of both is 10 wt% or less, preferably in the range of 3 to 10 wt%. It is desirable to mix them.

【0008】ここで、本発明のフライアッシュモルタル
を製造する場合を説明する。先ずフライアッシュ(f)
とセメント(c)の混合粉体(f+c)に対してセメン
ト(c)が10wt%以下と少量の配合であるため、予
め粉体同士を均質混合粉体となるまで混合を行うことが
重要である。この場合の混合方法は、少量のセメントを
効率良く確実に混合し、バラツキを小さくした状態で以
降の工程へ連続的に供給出来るものであれば、連続処理
方式でも、バッチ処理方式でもよく特に限定されない。
例えばフライアッシュサイロとセメントサイロからそれ
ぞれ所定の配合比率になるようにベルトスケールユニッ
トを通して計量された二種類の粉体を同じベルトコンベ
ア上に移動させつつ、バッチ式の撹拌混合装置で所定時
間混合し均質混合体としてからホッパーへ貯留し、これ
より連続的に以降の工程へ取り出してもよい。
Here, the case of producing the fly ash mortar of the present invention will be described. First, fly ash (f)
Since the cement (c) is mixed in a small amount of 10 wt% or less with respect to the mixed powder (f + c) of the cement and the cement (c), it is important to mix the powders in advance until a homogeneous mixed powder is obtained. is there. In this case, the mixing method may be either a continuous processing method or a batch processing method, as long as a small amount of cement can be efficiently and reliably mixed and can be continuously supplied to the subsequent steps in a state in which variation is reduced. Not done.
For example, while moving two types of powder weighed through a belt scale unit from a fly ash silo and a cement silo so as to have a predetermined mixing ratio on the same belt conveyor, mixing is performed for a predetermined time by a batch type stirring and mixing device. The mixture may be stored in a hopper after being formed into a homogeneous mixture, and may be continuously taken out to a subsequent step.

【0009】また、計量された二種類の粉体を同じベル
トコンベア上からバケットエレベーター等に移し替えて
所定の高度まで持ち上げてから、両粉体を連続的に縦型
撹拌筒の上部から供給し、撹拌筒内を重力落下中に多段
階に方向変換させつつ混合させた均質混合体を撹拌筒底
部から連続的に取り出してもよい。本発明のフライアッ
シュモルタルを連続的に大量生産する場合、かかる縦型
撹拌筒方式による連続方式で製造することがバラツキを
小さくした状態で取り出せる点で特に好ましい。この場
合の縦型撹拌筒としては、仕切り板等で落下方向を変え
ることができるボックス(前田建設工業社製マイボック
ス)を複数連結したものが特に好ましい。
Further, the two kinds of weighed powders are transferred from the same belt conveyor to a bucket elevator or the like and lifted to a predetermined altitude, and then both powders are continuously supplied from the upper part of the vertical stirring cylinder. Alternatively, the homogenous mixture mixed while changing the direction in multiple stages during the gravity drop in the stirring cylinder may be continuously taken out from the bottom of the stirring cylinder. When the fly ash mortar of the present invention is continuously mass-produced, it is particularly preferable to manufacture the fly ash mortar by a continuous method using such a vertical stirring cylinder method in that the dispersion can be taken out in a state where the dispersion is reduced. In this case, as the vertical stirring cylinder, one in which a plurality of boxes (My Box manufactured by Maeda Construction Industry Co., Ltd.) whose falling direction can be changed by a partition plate or the like is particularly preferable.

【0010】次に均質混合した粉体を引き続き、海水と
共に押出型のペーストミキサーへ連続的に供給し、該ペ
ーストミキサー内を通過するまでの間練り混ぜることが
重要である。押出型のペーストミキサーとしては、単軸
又は二軸方式のスクリュー押出タイプが利用できるが、
特に確実で十分な連続練り混ぜを行うことができる二軸
方式のスクリュータイプが好ましい。ここで均質混合体
に混入させる海水の配合量は、特に限定されるものでは
ないが、混合粉体(f+c)100重量部に対して30
〜60重量部、好ましくは35〜50重量部程度が望ま
しい。但し、フライアッシュの品質に応じて希望するス
ランプが得られる配合率は、予めコンクリートスランプ
試験(JISA1101)で確認しておくことが望まし
い。
Next, it is important to continuously supply the homogeneously mixed powder together with seawater to an extrusion-type paste mixer and knead the mixture until the powder passes through the paste mixer. As an extrusion-type paste mixer, a single-screw or twin-screw screw extrusion type can be used,
In particular, a twin-screw type screw type that can surely and sufficiently perform continuous kneading is preferable. Here, the amount of seawater to be mixed into the homogeneous mixture is not particularly limited, but may be 30 parts per 100 parts by weight of the mixed powder (f + c).
6060 parts by weight, preferably about 35-50 parts by weight. However, it is desirable that the mixing ratio at which a desired slump is obtained in accordance with the quality of fly ash be confirmed in advance by a concrete slump test (JISA1101).

【0011】次いで、連続的に練り混ぜたフライアッシ
ュモルタルは、引き続き少なくとも2台設置したバッチ
式ミキサーの一方へ連続的に供給し、所定のミキサー容
量の範囲内まで貯留した後、別のバッチ式ミキサーへ供
給させることで連続作業を確保する。この場合のバッチ
式ミキサーとしては、その場で強制的に混練・撹拌が可
能なものであれば良く、通常は強制回転される二軸にそ
れぞれ撹拌翼を有する強制二軸ミキサーが好ましい。こ
こで、供給された該バッチ式ミキサー内では、所定時間
追練りを行って材料の性状が変化しない程度まで十分に
混練されたフライアッシュモルタルを形成する。
Then, the fly ash mortar continuously kneaded and mixed is continuously supplied to one of at least two batch type mixers, and stored in a predetermined mixer capacity range. Continuous work is ensured by feeding to the mixer. The batch type mixer in this case may be any mixer capable of forcibly kneading and stirring on the spot, and is usually a forced twin-screw mixer having a stirring blade on each of two forcibly rotated shafts. Here, in the supplied batch mixer, pulverization is performed for a predetermined time to form a fly ash mortar sufficiently kneaded until the properties of the material do not change.

【0012】十分な練り混ぜを行ったフライアッシュモ
ルタルは、バッチ式ミキサーの底部を解放し、そこに待
機させたトラックミキサー車で順次受け取り、フライア
ッシュモルタルの打設現場まで運搬し、適宜打設専用の
コンクリートポンプ車等に積み替える。本発明のフライ
アッシュモルタルは、陸上部、あるいは海水中等への打
設に利用できる。この場合、打設に際して適宜の硬化促
進材を添加することが望ましい。
[0012] The fly ash mortar, which has been sufficiently mixed, releases the bottom of the batch-type mixer, is sequentially received by a truck mixer truck waiting there, transported to the site where the fly ash mortar is set, and is appropriately set. Transfer to a dedicated concrete pump truck. The fly ash mortar of the present invention can be used for casting on land or in seawater. In this case, it is desirable to add an appropriate curing accelerator at the time of casting.

【0013】次にフライアッシュモルタルの打設工法に
ついて詳細に説明する。フライアッシュモルタルをトラ
ックミキサー車の排出部(シュート部)から打設専用の
コンクリートポンプ車へ積み替えるラインで硫酸アルミ
ニウム等の硬化促進材を添加し、コンクリートポンプ車
にて混合撹拌しつつ、ポンプで昇圧してモルタル圧送管
を通じてその先端部から打設するのが好ましい。この場
合、フライアッシュモルタルを水中へ打設する場合に
は、モルタル圧送管の先端部は水中にて、潜水士の人手
による操作、又はロボットアーム等を利用した機械操作
にて、水中打設部を確認しながら移動操作して打設する
のが望ましい。陸上で打設する場合には、モルタル圧送
管の先端部から適宜吹き込み打設することができる。
Next, the method of placing fly ash mortar will be described in detail. At the line where the fly ash mortar is transferred from the discharge part (chute part) of the truck mixer truck to a concrete pump truck dedicated to casting, a hardening accelerator such as aluminum sulfate is added, and while mixing and stirring with the concrete pump truck, It is preferable to raise the pressure and drive from the tip through a mortar pumping tube. In this case, when the fly ash mortar is poured into water, the tip of the mortar pumping tube is placed in water, and the mortar is manually driven by a diver or mechanically operated using a robot arm or the like. It is desirable to move and place while confirming. In the case of casting on land, the mortar can be appropriately blown from the tip of the mortar feeding pipe.

【0014】[0014]

【実施例】以下に、本発明の具体的な実施例を説明す
る。 実施例 フライアッシュサイロ(1000t)及びセメントサイロ(100
t)から、それぞれベルトスケールユニットを通して計量
された二種類の粉体(フライアッシュ94%,セメント
6%)をバケットエレベーターで立ち上げてから縦型撹
拌筒[マイボックス(前田建設工業社製)6基連結して
構成]の最上部へ供給し、このマイボックス内を6回通
過させることで26=64回の混合がなされた均質混合
粉体を底部から得た。この均質混合粉体100重量部に
対して海水約50重量部の比率で連続練りが可能である
2台の二軸押出型のペーストミキサー(約29回転/
分)へそれぞれ連続的に供給した。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described. Example Fly ash silo (1000t) and cement silo (100t)
From (t), two types of powder (94% fly ash, 6% cement) each weighed through a belt scale unit were started up by a bucket elevator, and then a vertical stirring tube [My Box (manufactured by Maeda Corporation) 6 And the mixture was passed through the my box six times to obtain a homogeneous mixed powder mixed 2 6 = 64 times from the bottom. Two twin-screw extruder-type paste mixers (approximately 29 rpm) capable of continuous kneading at a ratio of about 50 parts by weight of seawater to 100 parts by weight of the homogeneous mixed powder.
Min) continuously.

【0015】各ミキサー内を通過する迄の間(約30秒
間)練り混ぜた後、引き続き練り混ぜたフライアッシュ
モルタルは、可逆式の切替えベルトコンベヤを利用して
2台のバッチ式強制二軸ミキサー(約34回転/分)の
一方へ約5分間供給し続け、引き続き更に他方のミキサ
ーへの供給を継続させる。各ミキサー内では更に約3分
間の追練りを行うことで材料の性状が変化しないまでの
十分な混練がなされたモルタルを2分間でその下部に待
機させたトラックミキサーへ排出し、引き続き、次の練
り混ぜたペーストの供給を受け入れて同様な操作を継続
させた。このようにして36m3/hrのフライアッシ
ュモルタルが連続的に得られた。このフライアッシュモ
ルタルは、品質のバラツキも少なく、特に遮水工護岸壁
構造体を形成する水中型枠内への中詰材として短時間に
大量に供給することができた。
After kneading the mixture until it passes through each mixer (about 30 seconds), the fly ash mortar continuously kneaded is mixed with two batch-type forced twin-screw mixers using a reversible switching belt conveyor. (About 34 rpm) for about 5 minutes, and then continue to supply the other mixer. In each mixer, the mortar, which has been sufficiently kneaded until the properties of the material do not change, is discharged to the truck mixer, which is kept at a lower portion thereof, for about 3 minutes by performing the pulverization for about 3 minutes. The same operation was continued by receiving the supply of the kneaded paste. Thus, a fly ash mortar of 36 m 3 / hr was continuously obtained. This fly ash mortar had little variation in quality, and was able to be supplied in a large amount in a short time, particularly as a filling material in an underwater formwork forming a seawall construction structure.

【0016】[0016]

【発明の効果】以上説明した本発明によると、フライア
ッシュとセメント及び海水(又は水)等の計量と供給量
の微調整が容易で、品質の安定したフライアッシュモル
タルを生産効率良く大量に製造することができる。特に
フライアッシュの品質にバラツキがある場合に、それに
応じてペーストミキサーへ供給される海水量をコンクリ
ートスランプ試験(JISA1101)で確認して微調
整することで、製造されるモルタルの品質を安定させ、
且つ、ペーストミキサーの練り混ぜにより強制二軸ミキ
サーの混練り時間を短縮し、製造プラントとしての製造
能力のアップが図られる等、経済的にも極めて優れた効
果を発揮する。
According to the present invention described above, it is easy to finely adjust the amount of fly ash, cement, seawater (or water), and the like, and to produce fly ash mortar with stable quality in large quantities with high production efficiency. can do. In particular, when the quality of fly ash varies, the quality of the mortar to be manufactured is stabilized by checking and fine-tuning the amount of seawater supplied to the paste mixer according to the concrete slump test (JISA1101) accordingly.
In addition, the kneading time of the forced twin-screw mixer is shortened by kneading with the paste mixer, and the production capacity as a manufacturing plant is increased.

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 FI テーマコート゛(参考) //(C04B 28/02 (C04B 28/02 18:08) 18:08) Z (72)発明者 緒方 哲治 東京都新宿区新宿一丁目6番5号 開発工 事株式会社内 Fターム(参考) 4G012 PA27 PE01 4G056 AA07 AA08 AA25 CB12 CB21 CB23 CB27 CC06 CC37 CC39──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) // (C04B 28/02 (C04B 28/02 18:08) 18:08) Z (72) Inventor Ogata Tetsuharu 1-6-5 Shinjuku, Shinjuku-ku, Tokyo F-term (in reference) 4G012 PA27 PE01 4G056 AA07 AA08 AA25 CB12 CB21 CB23 CB27 CC06 CC37 CC39

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 フライアッシュを主材料とし、これに少
量のセメントと適量の海水または水を配合し混練するフ
ライアッシュモルタルの製造方法において、 フライアッシュとセメントを予め所定の比率で混合し
均質混合粉体とした後、 該均質混合粉体を、海水または水と共に押出型のペー
ストミキサーへ連続的に供給して該ペーストミキサー内
を通過するまでの間練り混ぜること、 該練り混ぜたフライアッシュモルタルは、連続的に少
なくとも2台設置したバッチ式ミキサーの一方へ供給
し、所定量供給後は引き続き別のバッチ式ミキサーへ連
続的に供給すること、 供給されたバッチ式ミキサー内では、所定時間追練り
を行って材料の性状が変化しない程度まで十分に混練さ
れたフライアッシュモルタルを形成すること、 形成されたフライアッシュモルタルは、少なくとも2
台のバッチ式ミキサーから交互に下部へ排出させるこ
と、 以上の組み合わせ工程を順次行うことを特徴とするフラ
イアッシュモルタルの製造方法。
1. A method for producing fly ash mortar, comprising fly ash as a main material, a small amount of cement and an appropriate amount of seawater or water, and kneading the fly ash. After forming the powder, the homogenous mixed powder is continuously supplied to an extruded paste mixer together with seawater or water, and kneaded until it passes through the paste mixer. The kneaded fly ash mortar Is continuously supplied to one of at least two batch mixers, and after a predetermined amount is supplied, continuously supplied to another batch mixer. In the supplied batch mixer, a predetermined time is added. Kneading to form a fly ash mortar sufficiently kneaded to such an extent that the properties of the material do not change; Sshumorutaru is, at least 2
A method for producing fly ash mortar, comprising alternately discharging the mixture from a batch type mixer to a lower portion, and sequentially performing the above-described combination steps.
【請求項2】 フライアッシュとセメントの均質混合粉
体は、両粉体を連続的に縦型撹拌筒の上部から供給し、
撹拌筒内を重力落下中に多段階に方向変換させつつ混合
し撹拌筒底部から連続的に得たものである請求項1記載
のフライアッシュモルタルの製造方法。
2. A homogeneous mixed powder of fly ash and cement, both powders are continuously supplied from the upper part of a vertical stirring cylinder,
2. The method for producing fly ash mortar according to claim 1, wherein the ash mortar is continuously obtained from the bottom of the stirring cylinder by mixing while changing the direction in multiple stages during the gravity drop in the stirring cylinder.
【請求項3】 バッチ式ミキサーは、強制二軸式ミキサ
ーである請求項1記載のフライアッシュモルタルの製造
方法。
3. The method for producing fly ash mortar according to claim 1, wherein the batch mixer is a forced twin-screw mixer.
JP2000035512A 2000-02-14 2000-02-14 Method for manufacturing fly-ash mortar Pending JP2001219419A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000035512A JP2001219419A (en) 2000-02-14 2000-02-14 Method for manufacturing fly-ash mortar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000035512A JP2001219419A (en) 2000-02-14 2000-02-14 Method for manufacturing fly-ash mortar

Publications (1)

Publication Number Publication Date
JP2001219419A true JP2001219419A (en) 2001-08-14

Family

ID=18559701

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000035512A Pending JP2001219419A (en) 2000-02-14 2000-02-14 Method for manufacturing fly-ash mortar

Country Status (1)

Country Link
JP (1) JP2001219419A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005246647A (en) * 2004-03-01 2005-09-15 Taiheiyo Kiko Kk Method and apparatus for manufacturing slag granulated material
CN101797771A (en) * 2010-04-02 2010-08-11 中铁二局股份有限公司 Preparation method of slurry for grouting and sand feeding of mined-out region under highway
JP2017160065A (en) * 2016-03-07 2017-09-14 株式会社ホクコン Lime wash modified composition and mortar molding/laid panel, and method for manufacturing laid panel
JP2022521539A (en) * 2019-12-25 2022-04-08 重慶徳庄農産品開発有限公司 Raw material mixer

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005246647A (en) * 2004-03-01 2005-09-15 Taiheiyo Kiko Kk Method and apparatus for manufacturing slag granulated material
JP4694790B2 (en) * 2004-03-01 2011-06-08 大平洋機工株式会社 Method and apparatus for producing slag granulated material
CN101797771A (en) * 2010-04-02 2010-08-11 中铁二局股份有限公司 Preparation method of slurry for grouting and sand feeding of mined-out region under highway
JP2017160065A (en) * 2016-03-07 2017-09-14 株式会社ホクコン Lime wash modified composition and mortar molding/laid panel, and method for manufacturing laid panel
JP2022521539A (en) * 2019-12-25 2022-04-08 重慶徳庄農産品開発有限公司 Raw material mixer
JP7286784B2 (en) 2019-12-25 2023-06-05 重慶徳庄農産品開発有限公司 Raw material mixing device

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