JPH04317444A - Superfine granulated slag power, its production and mortar composition - Google Patents
Superfine granulated slag power, its production and mortar compositionInfo
- Publication number
- JPH04317444A JPH04317444A JP3073952A JP7395291A JPH04317444A JP H04317444 A JPH04317444 A JP H04317444A JP 3073952 A JP3073952 A JP 3073952A JP 7395291 A JP7395291 A JP 7395291A JP H04317444 A JPH04317444 A JP H04317444A
- Authority
- JP
- Japan
- Prior art keywords
- granulated slag
- weight
- powder
- slag powder
- ultrafine
- 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
- 239000002893 slag Substances 0.000 title claims abstract description 67
- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 18
- 239000000203 mixture Substances 0.000 title claims description 13
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000000843 powder Substances 0.000 claims abstract description 53
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000004568 cement Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 6
- 239000010440 gypsum Substances 0.000 claims abstract description 6
- 239000001569 carbon dioxide Substances 0.000 claims description 15
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 15
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 8
- 239000002245 particle Substances 0.000 abstract description 2
- 238000010298 pulverizing process Methods 0.000 abstract description 2
- 229960004424 carbon dioxide Drugs 0.000 description 15
- 239000011400 blast furnace cement Substances 0.000 description 13
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- -1 carbon dioxide anhydride Chemical class 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 description 1
- 229910001626 barium chloride Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Landscapes
- Combined Means For Separation Of Solids (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は水硬性の高い水砕スラグ
超微粉及びその製造方法並びに該水砕スラグ超微粉を用
いたモルタル組成物に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to ultrafine granulated slag powder having high hydraulic hardness, a method for producing the same, and a mortar composition using the ultrafine granulated slag powder.
【０００２】0002
【従来の技術】水砕スラグ粉をセメントクリンカー粉及
び石膏と配合して得た高炉セメントを結合材として用い
たモルタルやコンクリート（以下、代表してモルタルと
する）は、ポルトランドセメントを用いたものと比べて
アルカリ骨材反応の抑制効果や耐硫酸塩性が優れている
とともに長期材令の強度が高いという利点があり、土木
分野での需要が大きい。ところが、水砕スラグ粉の水硬
性の影響でポルトランドセメント用いたものと比較する
と初期強度が低くて施工効率が悪いため、建築分野では
、あまり用いられていない。そこで、高炉セメントの水
硬性を上げるために種々の研究がなされている。例えば
、粉末度の高い水砕スラグ粉を用いることにより、高炉
セメントの水硬性が向上することが知られている。すな
わち、一般に高炉セメントに用いるブレーン比表面積３
０００〜５０００ｃｍ２ ／ｇ程度の水砕スラグ粉に替
えて、ブレーン比表面積６０００ｃｍ２ ／ｇ以上、特
に８０００ｃｍ２ ／ｇ以上の水砕スラグ超微粉を用い
ることが提唱されている（特開昭６１−２４２９４２号
公報、特公平１−２２２０９号公報）。[Prior Art] Mortar and concrete (hereinafter referred to as mortar) that use blast furnace cement obtained by blending granulated slag powder with cement clinker powder and gypsum as a binding material are those that use Portland cement. It has the advantage of being superior in suppressing alkali aggregate reaction and sulfate resistance, as well as having high strength over a long period of time, and is in high demand in the civil engineering field. However, due to the hydraulic properties of granulated slag powder, initial strength is lower and construction efficiency is lower than that using Portland cement, so it is not used much in the construction field. Therefore, various studies are being conducted to improve the hydraulic properties of blast furnace cement. For example, it is known that the hydraulic properties of blast furnace cement can be improved by using granulated slag powder with a high degree of fineness. In other words, the Blaine specific surface area 3 generally used for blast furnace cement
It has been proposed to use ultrafine granulated slag powder with a Blaine specific surface area of 6000 cm2/g or more, particularly 8000 cm2/g or more, instead of granulated slag powder with a surface area of about 000 to 5000 cm2/g (Japanese Patent Laid-Open No. 61-242942). Publication, Special Publication No. 1-22209).
【０００３】しかしながら、本発明者の試験結果による
と、単に粉砕や分級により超微粉末にするだけでは、期
待される初期強度が十分には得られないことが判明した
。However, according to the test results conducted by the present inventors, it has been found that the expected initial strength cannot be obtained sufficiently by simply grinding or classifying the material into ultrafine powder.
【発明が解決しようとする課題】本発明者は、従来はあ
まり考慮されていない物性を制御することによって従来
の技術では不十分であった水砕スラグ超微粉の水硬性を
向上する試みを行った。本発明の目的は、水硬性の高い
水砕スラグ超微粉を提供することにある。また、水硬性
の高い水砕スラグ超微粉を効率よく製造する方法を提供
することにある。さらには、水硬性の高い水砕スラグ超
微粉を用いることにより硬化初期の強度が優れ施工効率
がよいモルタル組成物を提供することにある。[Problems to be Solved by the Invention] The present inventor has attempted to improve the hydraulic properties of ultrafine granulated slag powder, which was insufficient with conventional techniques, by controlling physical properties that have not been considered much in the past. Ta. An object of the present invention is to provide ultrafine granulated slag powder with high hydraulic hardness. Another object of the present invention is to provide a method for efficiently producing ultrafine granulated slag powder with high hydraulic properties. Furthermore, it is an object of the present invention to provide a mortar composition which has excellent strength in the initial stage of hardening and has good construction efficiency by using ultrafine granulated slag powder having high hydraulic properties.
【０００４】0004
【課題を解決するための手段】本発明者が上記のような
課題を解決するため研究を行った結果、まず、水砕スラ
グ超微粉の水硬性に影響を与える因子として、水砕スラ
グを粉砕した後に気流分級して水砕スラグ超微粉を製造
する場合の、気流分級に用いる気流中に含まれる二酸化
炭素や水分があることが判明した。そして、気流分級に
用いる気流中に含まれる二酸化炭素又は水分の量を制御
することで水硬性の高い水砕スラグ超微粉を製造できる
ことを見出して本発明を完成した。[Means for Solving the Problems] As a result of research conducted by the present inventor to solve the above-mentioned problems, first of all, as a factor that affects the hydraulic properties of ultrafine granulated slag powder, pulverized granulated slag was It was found that carbon dioxide and moisture were contained in the airflow used for airflow classification when ultrafine granulated slag powder was produced by airflow classification. The present invention was completed by discovering that ultrafine granulated slag powder with high hydraulic properties can be produced by controlling the amount of carbon dioxide or water contained in the airflow used for airflow classification.
【０００５】すなわち、本発明は、ブレーン比表面積が
８０００〜２００００ｃｍ２ ／ｇ、６μｍ篩通過分含
有量が６０〜９５重量％、無水炭酸量が１．５重量％で
あることを特徴とする水砕スラグ超微粉である。また、
粉砕した水砕スラグを二酸化炭素濃度が０．５％以下又
は水分含有量が１２．６ｍｇ／ｌ以下の気流を用いて気
流分級して前記の水砕スラグ超微粉を製造する方法であ
る。さらには、前記の水砕スラグ超微粉を５〜９０重量
％、セメントクリンカー粉を９０〜５重量％及び石膏を
ＳＯ３ に換算して１〜１０重量％含有するスラグセメ
ント１００重量部に対して、細骨材３０〜３００重量部
を配合したことを特徴とするモルタル組成物である。That is, the present invention provides a granulated granulated material having a Blaine specific surface area of 8,000 to 20,000 cm2/g, a content of the fraction passed through a 6 μm sieve of 60 to 95% by weight, and an anhydrous carbonate content of 1.5% by weight. Slag is ultra-fine powder. Also,
In this method, the pulverized granulated slag is air-classified using an air flow with a carbon dioxide concentration of 0.5% or less or a water content of 12.6 mg/l or less to produce the ultrafine granulated slag powder. Furthermore, for 100 parts by weight of slag cement containing 5 to 90% by weight of the ultrafine granulated slag powder, 90 to 5% by weight of cement clinker powder, and 1 to 10% by weight of gypsum in terms of SO3, This mortar composition is characterized by containing 30 to 300 parts by weight of fine aggregate.
【０００６】以下、本発明を詳細に説明する。水砕スラ
グ粉は、水砕スラグを粉砕して得られるもので、高炉セ
メント等の水硬性材料の原料として広く用いられている
。特に、粉末度の高い水砕スラグ粉は水砕スラグ超微粉
と呼ばれており、本発明ではブレーン比表面積が８００
０ｃｍ２ ／ｇ以上のものを水砕スラグ超微粉と呼び、
本発明はブレーン比表面積が８０００〜２００００ｃｍ
２ ／ｇのものを対象とする。ブレーン比表面積が２０
０００ｃｍ２ ／ｇを超えるものは製造が困難であり、
たとえ製造できたとしても効率が悪く工業的に実施する
ことは不可能に近い。また、本発明の水砕スラグ超微粉
は６μｍ篩通過分含有量が６０〜９５重量％である。本
発明者の知見によれば、６μ篩通過分の含有量は、水砕
スラグ超微粉の水硬性を左右する重要な因子であり、こ
れが９５重量％を超えるとモルタルの長期強度が低下す
る傾向が現れ、６０重量％未満では初期強度が低い。The present invention will be explained in detail below. Granulated slag powder is obtained by crushing granulated slag, and is widely used as a raw material for hydraulic materials such as blast furnace cement. In particular, granulated slag powder with a high degree of fineness is called ultrafine granulated slag powder, and in the present invention, the Blaine specific surface area is 800.
0cm2/g or more is called hydrated slag ultrafine powder.
The present invention has a Blaine specific surface area of 8,000 to 20,000 cm.
2/g is targeted. Blaine specific surface area is 20
000cm2/g is difficult to manufacture.
Even if it could be manufactured, it would be inefficient and almost impossible to implement industrially. Moreover, the content of the ultrafine granulated slag powder of the present invention that passes through a 6 μm sieve is 60 to 95% by weight. According to the findings of the present inventors, the content of the material passing through a 6μ sieve is an important factor that influences the hydraulic properties of ultrafine granulated slag powder, and if this exceeds 95% by weight, the long-term strength of the mortar tends to decrease. appears, and if it is less than 60% by weight, the initial strength is low.
【０００７】水砕スラグ超微粉を製造する方法としては
、水砕スラグをチューブミル等の粉砕機で粉砕する方法
、水砕スラグを粉砕した後に分級する方法等がある。
エネルギー効率の点では粉砕と分級とを組み合わせて製
造する方法が好ましい。粉砕と分級とを順次おこなう方
法として、ローラーミル等の分級機を内蔵した粉砕機で
粉砕と分級とを連続的に行う方法もあるが、粉砕機で粉
砕したものを粉砕機とは独立した分級機で分級する方法
の方が粒子径分布を制御しやすいので好ましい。[0007] Methods for producing ultrafine granulated slag include a method in which granulated slag is pulverized using a crusher such as a tube mill, and a method in which granulated slag is pulverized and then classified. From the point of view of energy efficiency, a manufacturing method that combines pulverization and classification is preferred. There is a method of sequentially performing crushing and classification using a crusher with a built-in classifier, such as a roller mill. The method of classifying with a machine is preferable because it is easier to control the particle size distribution.
【０００８】本発明の水砕スラグ超微粉は無水炭酸量が
１．５重量％以下好ましくは０．６〜１．５重量％特に
好ましくは０．７５重量％を超え１．５重量％以下更に
好ましくは０．９〜１．５重量％の範囲にある。なお、
無水炭酸量の好ましい範囲は、水砕スラグ超微粉の粉末
度によって上限が異なり、具体的には、図１の斜線の部
分に対応する範囲が好ましい。無水炭酸量は、水砕スラ
グ超微粉の表面に付着している炭酸塩の量に対応する値
であり、本発明では、水砕スラグ超微粉を塩酸と反応さ
せることにより発生する二酸化炭素の量で表す。すなわ
ち、水砕スラグ１００ｇに濃塩酸１００ｍｌを注入した
際に発生する二酸化炭素を塩化バリウムと水酸化ナトリ
ウムとの水溶液に吸収させたものを塩酸で滴定して求め
た二酸化炭素の量に対応する。この無水炭酸量は、気流
分級時の気流中に含まれる二酸化炭素や水分によって影
響を受け、その量が多いほど水砕スラグ超微粉の無水炭
酸量も多くなる。また、この無水炭酸量が多いほどモル
タル組成物の結合材の原料として用いた場合に初期強度
が低くなる傾向がある。なお、無水炭酸量が少ないほど
この初期強度が高くなる傾向があり好ましいが、無水炭
酸量の少ないもの特に０．６重量％未満のものを製造す
るには製造条件を厳しくする必要があり、工業的に実施
することが困難である。The ultrafine granulated slag powder of the present invention has an anhydrous carbonate content of 1.5% by weight or less, preferably 0.6 to 1.5% by weight, particularly preferably more than 0.75% by weight and 1.5% by weight or less. Preferably it is in the range of 0.9 to 1.5% by weight. In addition,
The upper limit of the preferable range of the amount of anhydrous carbonic acid varies depending on the fineness of the ultrafine granulated slag powder, and specifically, the range corresponding to the shaded area in FIG. 1 is preferable. The amount of carbon dioxide anhydride is a value corresponding to the amount of carbonate attached to the surface of ultrafine granulated slag powder, and in the present invention, the amount of carbon dioxide generated by reacting ultrafine granulated slag powder with hydrochloric acid Expressed as That is, it corresponds to the amount of carbon dioxide generated when 100 ml of concentrated hydrochloric acid is injected into 100 g of granulated slag, which is absorbed into an aqueous solution of barium chloride and sodium hydroxide and titrated with hydrochloric acid. The amount of carbon dioxide anhydride is influenced by carbon dioxide and moisture contained in the airflow during air classification, and the greater the amount, the greater the amount of carbon dioxide anhydride in the ultrafine granulated slag powder. Furthermore, the larger the amount of carbonic anhydride, the lower the initial strength tends to be when used as a raw material for a binder in a mortar composition. It should be noted that the smaller the amount of carbon dioxide anhydride, the higher the initial strength tends to be, which is preferable, but in order to produce products with a small amount of carbon dioxide anhydride, especially those with less than 0.6% by weight, it is necessary to tighten the manufacturing conditions, and industrial It is difficult to implement it in a practical manner.
【０００９】そして、本発明の水砕スラグ超微粉の製造
方法では、粉砕した水砕スラグの分級を二酸化炭素濃度
が０．５％以下又は水分含有量が１２．６ｍｇ／ｌ以下
の雰囲気下で行うことにより、本発明の水砕スラグ超微
粉とする。In the method for producing ultrafine granulated slag of the present invention, the pulverized granulated slag is classified in an atmosphere with a carbon dioxide concentration of 0.5% or less or a water content of 12.6 mg/l or less. By doing so, the ultrafine granulated slag powder of the present invention is obtained.
【００１０】本発明の水砕スラグ超微粉は、高炉セメン
トやスラグアルカリセメント等の水硬性材料の原料とし
て好適である。中でも、高炉セメントの原料として用い
た場合、従来の高炉セメントの利点を有しつつ、モルタ
ルの初期強度が高くなるというような従来の高炉セメン
トにはない利点を有するものを提供できる。具体的に好
ましい使用形態としては、本発明の水砕スラグ超微粉を
５〜９０重量％、セメントクリンカー粉を５〜９０重量
％及び石膏をＳＯ３ として１〜１０重量％含有するス
ラグセメントがあり、該高炉セメント１００重量部に対
して、細骨材３０〜３００重量部及び水２５〜２００重
量部並びに必要に応じて各種セメント混和剤を配合した
モルタル組成物があり、従来の水砕スラグ粉を用いた場
合と比較して強度発現性が改良されており、特に初期強
度が高いという特徴がある。The ultrafine granulated slag powder of the present invention is suitable as a raw material for hydraulic materials such as blast furnace cement and slag alkali cement. Among these, when used as a raw material for blast furnace cement, it can provide a product that has the advantages of conventional blast furnace cement but also has advantages that conventional blast furnace cement does not have, such as increased initial strength of mortar. A concrete preferred form of use is a slag cement containing 5 to 90% by weight of the ultrafine granulated slag powder of the present invention, 5 to 90% by weight of cement clinker powder, and 1 to 10% by weight of gypsum as SO3, There is a mortar composition in which 100 parts by weight of blast furnace cement is mixed with 30 to 300 parts by weight of fine aggregate, 25 to 200 parts by weight of water, and various cement admixtures as necessary. The strength development property is improved compared to the case where it is used, and the initial strength is particularly high.
【００１１】[0011]
【実施例】以下に本発明の実施例について説明する。
実施例１〜４
予備乾燥して水分含有量を１０重量％に調節した塩基度
１．８９の水砕スラグ１００重量部をボールミルでブレ
ーン比表面積約４０００ｃｍ２ ／ｇに粉砕し、二酸化
炭素濃度０．５％以下又は水分含有量１２．６ｍｌ／ｌ
以下の気流を用いサイクロンセパレーターで分級してブ
レーン比表面積約８０００ｃｍ２ ／ｇ、約１５０００
ｃｍ２ ／ｇ、約２００００ｃｍ２ ／ｇの水砕スラグ
超微粉を製造した。
得られた水砕スラグ超微粉５０重量部に対して、ブレー
ン比表面積３２００ｃｍ２ ／ｇのセメントクリンカー
粉４７重量部及び二水石膏３．５重量部を配合して高炉
セメントＢ種を試製し、該高炉セメントＢ種１００重量
部に対して、細骨材２００重量部及び水６５重量部を配
合してモルタル組成物を得た。該モルタル組成物につい
てＪ１Ｓ−Ｒ−５２０１に準じて強度試験を行った。水
砕スラグ超微粉のブレーン比表面積、６μｍ篩通過分含
有量及び無水炭酸量並びにモルタル組成物の材令３日〜
２８日の圧縮強さを表１に示す。[Examples] Examples of the present invention will be described below. Examples 1 to 4 100 parts by weight of granulated slag with a basicity of 1.89, which had been predried to have a water content of 10% by weight, was ground in a ball mill to a Blaine specific surface area of about 4000 cm2/g, and the carbon dioxide concentration was 0.8%. 5% or less or moisture content 12.6ml/l
Classified with a cyclone separator using the following air flow, the Blaine specific surface area is approximately 8,000 cm2/g, approximately 15,000
cm2/g, approximately 20,000 cm2/g ultrafine granulated slag powder was produced. 47 parts by weight of cement clinker powder with a Blaine specific surface area of 3200 cm2/g and 3.5 parts by weight of gypsum were mixed with 50 parts by weight of the obtained ultrafine granulated slag powder to prepare blast furnace cement type B. A mortar composition was obtained by blending 200 parts by weight of fine aggregate and 65 parts by weight of water with 100 parts by weight of blast furnace cement B type. A strength test was conducted on the mortar composition according to J1S-R-5201. Blaine specific surface area, content passing through a 6 μm sieve, and anhydrous carbon content of ultrafine granulated slag powder and mortar composition age 3 days ~
Table 1 shows the compressive strength on day 28.
【００１２】比較例１〜５
ボールミルで粉砕した水砕スラグをサイクロンセパレー
ターで分級する際に二酸化炭素濃度が０．５％を超える
か又は水分含有量が１２．６ｍｇ／ｌを超える気流を用
い、水砕スラグ超微粉の無水炭酸量が１．５重量％を超
える水砕スラグ超微粉を製造し、実施例と同様にしてモ
ルタル組成物を得た。結果を表１に示す。Comparative Examples 1 to 5 When granulated slag ground with a ball mill was classified using a cyclone separator, an air flow with a carbon dioxide concentration exceeding 0.5% or a water content exceeding 12.6 mg/l was used, Ultrafine granulated slag powder having an anhydrous carbonate content of more than 1.5% by weight was produced, and a mortar composition was obtained in the same manner as in the example. The results are shown in Table 1.
【表１】[Table 1]
【００１３】[0013]
【発明の効果】本発明の水砕スラグ超微粉は水硬性が高
く水硬性材料の原料として好適である。また、本発明の
水砕スラグ超微粉の製造方法によれば、水硬性の高い水
砕スラグ超微粉を効率よく製造できる。さらには、本発
明のモルタル組成物は、従来の高炉セメントを用いたモ
ルタル組成物と比べて初期強度が高く、建築現場等で効
率よく施工できる。Effects of the Invention The ultrafine granulated slag powder of the present invention has high hydraulic properties and is suitable as a raw material for hydraulic materials. Furthermore, according to the method for producing ultrafine granulated slag powder of the present invention, ultrafine granulated slag powder with high hydraulic properties can be efficiently produced. Furthermore, the mortar composition of the present invention has higher initial strength than conventional mortar compositions using blast furnace cement, and can be efficiently applied at construction sites and the like.
【図１】本発明の水砕スラグ超微粉のブレーン比表面積
と無水炭酸量とについて好ましい範囲を示すグラフ。FIG. 1 is a graph showing preferred ranges for the Blaine specific surface area and anhydrous carbon content of ultrafine granulated slag powder of the present invention.
○印は実施例１〜４の水砕スラグ超微粉に対応する。 The ○ mark corresponds to the ultrafine granulated slag powder of Examples 1 to 4.
Claims (3)
００ｃｍ２ ／ｇ、６μｍ篩通過分含有量が６０〜９５
重量％、無水炭酸量が１．５重量％以下であることを特
徴とする水砕スラグ超微粉。Claim 1: Blaine specific surface area is 8000-200
00cm2/g, the content of what passes through a 6μm sieve is 60-95
An ultrafine granulated slag powder characterized by having a weight% and anhydrous carbonate content of 1.5% by weight or less.
が０．５％以下又は水分含有量が１２．６ｍｇ／ｌ以下
の気流を用い気流分級することを特徴とする請求項１記
載の水砕スラグ超微粉の製造方法。2. The granulated slag according to claim 1, wherein the pulverized granulated slag is subjected to airflow classification using an airflow having a carbon dioxide concentration of 0.5% or less or a water content of 12.6mg/l or less. Method for producing ultrafine slag powder.
〜９０重量％、セメントクリンカー粉を９０〜５重量％
及び石膏をＳＯ３ に換算して１〜１０重量％含有する
スラグセメント１００重量部に対して、細骨材３０〜３
００重量部を配合したことを特徴とするモルタル組成物
。[Claim 3] The ultrafine granulated slag powder according to claim 1 is
~90% by weight, 90-5% by weight of cement clinker powder
and 100 parts by weight of slag cement containing 1 to 10% by weight of gypsum in terms of SO3, 30 to 3 parts by weight of fine aggregate.
A mortar composition characterized in that it contains 00 parts by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3073952A JPH04317444A (en) | 1991-02-21 | 1991-03-13 | Superfine granulated slag power, its production and mortar composition |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3-48943 | 1991-02-21 | ||
| JP4894391 | 1991-02-21 | ||
| JP3073952A JPH04317444A (en) | 1991-02-21 | 1991-03-13 | Superfine granulated slag power, its production and mortar composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04317444A true JPH04317444A (en) | 1992-11-09 |
Family
ID=26389285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3073952A Pending JPH04317444A (en) | 1991-02-21 | 1991-03-13 | Superfine granulated slag power, its production and mortar composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04317444A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2735767A1 (en) * | 1995-06-23 | 1996-12-27 | Lorraine Laminage | Preparation of granulated steel process slag for use in hydraulic cements or road surfaces |
| US7445591B2 (en) | 2001-12-21 | 2008-11-04 | British Nuclear Fuels Plc | Treatment of waste products |
-
1991
- 1991-03-13 JP JP3073952A patent/JPH04317444A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2735767A1 (en) * | 1995-06-23 | 1996-12-27 | Lorraine Laminage | Preparation of granulated steel process slag for use in hydraulic cements or road surfaces |
| US7445591B2 (en) | 2001-12-21 | 2008-11-04 | British Nuclear Fuels Plc | Treatment of waste products |
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