JPH11223628A - Activity inspecting method for sludge water - Google Patents
Activity inspecting method for sludge waterInfo
- Publication number
- JPH11223628A JPH11223628A JP3797098A JP3797098A JPH11223628A JP H11223628 A JPH11223628 A JP H11223628A JP 3797098 A JP3797098 A JP 3797098A JP 3797098 A JP3797098 A JP 3797098A JP H11223628 A JPH11223628 A JP H11223628A
- Authority
- JP
- Japan
- Prior art keywords
- sludge water
- activity
- cement
- glucose
- reducing sugar
- 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
Landscapes
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
Description
【０００１】[0001]
【発明が属する技術分野】本発明は、まだ固まらないコ
ンクリート又はモルタル等のセメント含有半流動体を洗
浄したセメント含有スラッジ水において、セメントの活
性を維持して翌日以降に再使用するために添加する遅延
剤の一部又は全部に還元性を有する糖を用い、この糖の
還元性を利用して呈色反応その他の視認できる反応で還
元糖の存在を検知してスラッジ水中のセメントの活性度
を検査する方法に関する。セメントの活性度を検査する
ことによりスラッジ水の使用可否を判断できると共に、
使用予定時刻まで活性を維持させるに必要な遅延剤の添
加量をより正確に決定することができる。The present invention relates to a cement-containing sludge water obtained by washing a cement-containing semi-liquid such as concrete or mortar which has not yet set, in order to maintain the activity of the cement and to reuse the cement from the next day. A reducing sugar is used for part or all of the retarder, and the activity of the cement in the sludge water is detected by detecting the presence of the reducing sugar by a color reaction or other visible reaction using the reducing ability of the sugar. How to inspect. By inspecting the activity of cement, it is possible to judge whether sludge water can be used,
It is possible to more accurately determine the amount of the delay agent required to maintain the activity until the scheduled use time.
【０００２】[0002]
【従来の技術】本出願人はセメントを含有するスラッジ
水に遅延剤を添加して翌日以降のセメント練り混ぜ水と
して使用するスラッジ水の再利用方法を確立した。この
方法を各地の生コン工場で実施したところ、産業廃棄物
として排出されるセメントの残滓が激減し、スラッジ水
を添加したフレッシュコンクリートの性能は向上し、コ
ンクリートの品質維持及びセメントのリサイクルの両要
請を同時に満足できる非常に優れた方法である。2. Description of the Related Art The present applicant has established a method for recycling sludge water used as cement mixing water on the following day by adding a retarder to sludge water containing cement. When this method was implemented at ready-mixed concrete plants around the country, cement residues discharged as industrial waste were drastically reduced, the performance of fresh concrete with added sludge water was improved, and both demands for maintaining the quality of concrete and recycling cement were made. Is a very good way to satisfy at the same time.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、生コン
クリートは四季により温度の変動が激しく、スラッジ水
のセメント濃度も不規則に変動する。そのため、スラッ
ジ水に遅延剤を計算量添加してセメント分が活性である
はずのスラッジ水中のスラッジがすでに活性を失ってい
ることもある。このスラッジ水をコンクリート練混ぜに
再使用すると、フレッシュコンクリートのスランプの低
下、スランプロス及び硬化物の強度低下等コンクリート
の物性に問題が生じた。このような現象を防ぐために余
分の遅延剤を添加することは遅延剤の無駄であると同時
に、遅延剤を超過多に添加したスラッジ水を再使用した
コンクリートは固まりが遅くコテ押え時期が遅れる等凝
結遅延の問題が生じる。However, the temperature of ready-mixed concrete varies greatly with the seasons, and the cement concentration of sludge water also varies irregularly. Therefore, the sludge in the sludge water in which the cement component is supposed to be active by adding the calculated amount of the retarder to the sludge water may have already lost its activity. When this sludge water was reused for mixing concrete, there were problems in physical properties of the concrete, such as a decrease in slump of fresh concrete, a decrease in slump loss, and a decrease in strength of a cured product. Adding an extra retarding agent to prevent such a phenomenon is a waste of the retarding agent, and at the same time, concrete that reuses sludge water with an excessive amount of the retarding agent is set too slowly and the ironing time is delayed. A setting delay problem arises.
【０００４】添加した遅延剤はセメントの活性を維持す
るために時間の経過と共に消失していく。その消失の程
度は温度をはじめとして種々の条件の影響を受けるため
単純に計算することはできない。そこで、工程の任意の
部位でスラッジ水中のセメントの活性度を測定して、遅
延剤の添加量を常に適正に維持管理する必要上、スラッ
ジ水中のセメントの活性度の簡易な測定方法の確立が急
務であった。[0004] The added retarders disappear over time to maintain the activity of the cement. The degree of the disappearance cannot be simply calculated because it is affected by various conditions including the temperature. Therefore, it is necessary to measure the activity of the cement in the sludge water at any part of the process, and to maintain and control the amount of the retarder always properly.Therefore, a simple measurement method of the activity of the cement in the sludge water has been established. It was urgent.
【０００５】[0005]
【課題を解決するための手段】本発明は上記課題を解決
することを目的とし、その構成は、セメントを含有する
スラッジ水の活性を保持するために添加する遅延剤の全
部又は一部に還元糖、好ましくはグルコースを使用し、
上記還元糖と反応して１０分以内に視認できる反応を示
す試薬、好ましくは呈色試薬を用いて、スラッジ水中の
セメントの活性度を検査することを特徴とする。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and the constitution of the present invention is to reduce all or a part of a retarder added to maintain the activity of sludge water containing cement. Using sugar, preferably glucose,
The activity of the cement in the sludge water is inspected by using a reagent showing a reaction visible within 10 minutes after reacting with the reducing sugar, preferably a color reagent.
【０００６】すなわち、本発明は未だ活性を有するセメ
ントを含有するスラッジ水の中に凝結遅延剤を添加して
活性を維持し、翌日以降のセメントの練り混ぜ水に添加
して再使用するに際し、プラント中の任意の部位におい
て、セメントの活性度を簡易に測定するものである。そ
の手段として遅延剤の全部又は一部に還元糖、好ましく
はグルコースを使用するものである。グルコースは使用
し易い価格であると共に、鋭敏な反応性を示す。That is, in the present invention, when a setting retarder is added to sludge water containing a still active cement to maintain the activity, and added to the cement mixing water from the next day onward, the cement is used for reuse. This is to easily measure the activity of cement at an arbitrary site in a plant. As a means for this, a reducing sugar, preferably glucose, is used for all or a part of the retarder. Glucose is easy to use and has a sensitive reactivity.
【０００７】グルコース、果糖、乳糖、麦芽糖、転化糖
などの還元性を有する糖類は、その還元性を利用して酵
素法、ベルトラン法、ソモギー法、レイン−エイノン法
等種々の検出方法が確立されている。本発明は、遅延剤
として還元糖を使用し、或いは他の遅延剤の使用が好ま
しい場合には他の遅延剤と還元糖を併用して用いる。一
方、これらの検出方法の中で特に感度の高い方法を選
び、スラッジ水中のセメントの強熱減量と検出反応との
関係を前もって把握する。この検出方法により、フレッ
シュコンクリートの練り混ぜ水として使用寸前のスラッ
ジ水の強熱減量が適正であることを確認することができ
ると共に、プラントの各部位において、現実の使用日時
まで活性を保つために必要な遅延剤の添加量を検知して
過不足のない量の遅延剤を添加することができる。[0007] Reducing saccharides such as glucose, fructose, lactose, maltose, invert sugar and the like are utilized in various detection methods such as an enzymatic method, a Bertrand method, a somogy method, and a rain-Aynon method by utilizing the reducing property. ing. In the present invention, a reducing sugar is used as a retarding agent, or when another retarding agent is preferably used, a reducing sugar is used in combination with another retarding agent. On the other hand, a particularly sensitive method is selected from these detection methods, and the relationship between the ignition loss of the cement in the sludge water and the detection reaction is grasped in advance. By this detection method, it is possible to confirm that the ignition loss of sludge water just before use as mixing water for fresh concrete is appropriate, and to maintain activity at each part of the plant until the actual use date and time. By detecting the required amount of the retarder to be added, it is possible to add a sufficient amount of the retarder.
【０００８】スラッジの水和抑制効果はグルコースを含
む遅延剤がスラッジ水中に残っていることが重要で、遅
延剤が消失するとスラッジの強熱減量が急速に上がりス
ラッジが水和して失活する。強熱減量１０％以上の水和
スラッジを再使用するとフレッシュコンクリートのスラ
ンプの低下、スランプロス、空気量ロス及び強度低下等
コンクリートの物性に悪影響がある。It is important for the effect of inhibiting the hydration of sludge that a retarder containing glucose remains in the sludge water. When the retarder disappears, the ignition loss of the sludge increases rapidly, and the sludge is hydrated and deactivated. . Reuse of the hydrated sludge having a loss on ignition of 10% or more has an adverse effect on the physical properties of the concrete, such as a decrease in slump of fresh concrete, a slump loss, a loss of air amount, and a decrease in strength.
【０００９】[0009]
【発明の実施の形態】本発明に使用する遅延剤とは、グ
ルコン酸、クエン酸、酒石酸のようなオキシカルボン酸
系化合物又はその塩、グルコース、蔗糖、乳糖のような
糖類、アミノトリメチレンホスホン酸のようなアミノホ
スホン酸系化合物及びその塩、リグニンスルホン酸又は
その塩系の減水剤で促進作用を有しないもの、ケイフッ
化物等一般にセメントの凝結を遅延させる効果を有する
ものはすべて包含される。BEST MODE FOR CARRYING OUT THE INVENTION The retarders used in the present invention include oxycarboxylic acid compounds such as gluconic acid, citric acid and tartaric acid or salts thereof, sugars such as glucose, sucrose and lactose, and aminotrimethylene phosphone. Aminophosphonic acid-based compounds such as acids and salts thereof, ligninsulfonic acid or its salt-based water reducing agents that do not have an accelerating effect, and those that generally have an effect of delaying the setting of cement, such as silicofluorides, are included. .
【００１０】還元糖とはグルコース、果糖、乳糖、麦芽
糖、転化糖等遊離の還元性を有する糖類である。これら
の還元糖にはその還元性を利用して各種の検出方法があ
る。例えば酵素法は、グルコースオキシダーゼやガラク
トースオキシダーゼ等の酵素を用いて酸素吸収量や生成
する過酸化水素を生化学的或いは化学的方法で検出す
る。中でも、グルコースはグルコースオキシダーゼの作
用により過酸化水素を生じ、次いでペルオキシダーゼの
作用によりｏ−トリジンを酸化し、グルコースの濃度に
応じて黄色から青色に呈色する。この反応は鋭敏で短時
間に検出することができ、グルコースに特異的である。[0010] Reducing sugars are saccharides having free reducing properties such as glucose, fructose, lactose, maltose and invert sugar. There are various detection methods for these reducing sugars by utilizing their reducing properties. For example, in the enzymatic method, the amount of oxygen absorbed and the generated hydrogen peroxide are detected by a biochemical or chemical method using an enzyme such as glucose oxidase or galactose oxidase. Above all, glucose produces hydrogen peroxide by the action of glucose oxidase, then oxidizes o-tolidine by the action of peroxidase, and changes its color from yellow to blue depending on the concentration of glucose. This reaction is sensitive and can be detected in a short time and is specific for glucose.
【００１１】その他、検液にフェーリング液を加えて加
熱し、還元糖の量に応じて沈澱するＣｕ2 ＯをＨ2 ＳＯ
4 酸性過マンガン酸カリの標準液で滴定するベルトラン
法、ＣｕＳＯ4 がアルカリ性で還元糖により還元されて
生じたＣｕ2 Ｏは、酸性下でＫＩＯ3 ＋ＫＩで遊離する
Ｉ2 を定量的に消費する。ここに残存したＩ2 をＮａ2
ＳＯ3 で滴定するか、澱粉液で呈色させるソモギー法、
一定量の沸騰フェーリング液をメチレンブルーを内部指
示薬として還元糖液で滴定し、レイン−エイノン糖類定
量法を用いて糖量を算出するレイン−エイノン法或いは
旋光度法等を利用することができる。本発明はこれらの
方法をそのまま実施するのではなく、より簡易な方法で
還元糖の存否を確認する方法を選ぶことができる。ま
た、スラッジ水に澱粉溶液を添加し、採取したスラッジ
水にＩ2 液を滴下してスラッジ水の活性を確認すること
もできる。In addition, Fehling's solution is added to the test solution and heated, and Cu 2 O, which precipitates according to the amount of reducing sugar, is changed to H 2 SO
4 Bertrand method titrated with standard solution of acidic potassium permanganate, Cu 2 O generated is reduced by the reducing sugars CuSO 4 is alkaline, the quantitative consumption of I 2 liberated by KIO 3 + KI under acidic conditions . The remaining I 2 is replaced with Na 2
Somogyi method of titrating with SO 3 or coloring with a starch solution,
A fixed amount of boiling Fehling solution is titrated with a reducing sugar solution using methylene blue as an internal indicator, and a rain-Aynone method or an optical rotation method for calculating the sugar amount using a rain-Ainone saccharide quantification method can be used. According to the present invention, a method for confirming the presence or absence of a reducing sugar can be selected by a simpler method, instead of directly carrying out these methods. Also, adding a starch solution in the sludge water, to collect sludge water dropwise I 2 solution can also check the activity of the sludge water.
【００１２】本発明における視認できるとは、特殊の器
具を用いずに肉眼で判定できる方法を意味する。したが
って、呈色反応は還元糖の存在を確実に判断できるので
好ましい。しかしながら、呈色反応以外でも濁りの発
生、透明性の増加、表面状態の変化等、肉眼で判定でき
る変化を伴う反応はすべて包含される。試薬を予め濾紙
など吸着させて、この濾紙をスラッジ水に浸漬すると還
元糖が存在する場合に呈色その他の変化により判定する
方法は最も好ましい。視認できる変化は現場作業である
ため煩雑なものは実用性がなく、１０分以内、好ましく
は５分以内、より好ましくは１分以内で判定できるもの
である。試験紙を浸漬する方法に限らず、例えば現場に
おける残留塩素計のように、験水をガラス管に入れ、試
薬を滴下することにより判定できる方法も好ましく使用
できる。The term "visible" in the present invention means a method which can be judged with the naked eye without using a special instrument. Therefore, the color reaction is preferable because the presence of the reducing sugar can be reliably determined. However, in addition to the color reaction, all reactions involving a change that can be judged by the naked eye, such as generation of turbidity, increase in transparency, and change in surface state, are included. The most preferable method is to preliminarily adsorb the reagent such as filter paper and immerse the filter paper in sludge water to determine the presence of reducing sugar by coloration or other change when reducing sugar is present. Since the change that can be visually perceived is an on-site work, a complicated change is not practical and can be determined within 10 minutes, preferably within 5 minutes, more preferably within 1 minute. The method is not limited to the method of dipping the test paper, and a method that can be determined by putting test water in a glass tube and dropping a reagent, such as a residual chlorine meter at the site, can also be preferably used.
【００１３】本発明において、還元糖はスラッジ水に対
し０．００１〜０．３重量％、好ましくは０．０１〜
０．１重量％使用する。また、他の遅延剤をグルコース
と併用する場合には、遅延剤の種類、併用するグルコー
ス使用量によっても異なるが、スラッジ水に対し０．０
１〜０．３重量％、好ましくは０．０５〜０．２重量％
である。スラッジ水中のスラッジ固形分に対しては０．
１〜３．０重量％、好ましくは０．２〜２．０重量％で
ある。In the present invention, the reducing sugar is present in an amount of 0.001 to 0.3% by weight, preferably 0.01 to 0.3% by weight of the sludge water.
Use 0.1% by weight. In addition, when another retardant is used in combination with glucose, it depends on the type of the retarder and the amount of glucose used together.
1 to 0.3% by weight, preferably 0.05 to 0.2% by weight
It is. 0.1 for sludge solids in sludge water.
It is 1 to 3.0% by weight, preferably 0.2 to 2.0% by weight.
【００１４】[0014]
【実施例】実施例１ ２０℃で練混ぜられ２時間経過したコンクリートを０．
１５ｍｍの篩を通して水洗し、０．１５ｍｍ以上の骨材
を除去した固形分濃度１０重量％のスラッジ水を得た。
このスラッジ水に含水結晶グルコース（サンエイ糖化社
製）１５重量％とグルコン酸ナトリウム（藤沢薬品工業
社製）２０重量％に調整した遅延剤溶液を、上記１０重
量％スラッジ水に対し０．１５容量％添加して撹拌混合
を行った。EXAMPLES Example 1 Concrete that had been mixed at 20 ° C. and had been passed for 2 hours was subjected to 0.1 hour.
The resultant was washed with water through a 15 mm sieve to obtain sludge water having a solid content of 10% by weight from which aggregates having a diameter of 0.15 mm or more were removed.
In this sludge water, a retarder solution adjusted to 15% by weight of hydrous crystalline glucose (manufactured by Sanei Saccharification Co., Ltd.) and 20% by weight of sodium gluconate (manufactured by Fujisawa Pharmaceutical Co., Ltd.) was added in an amount of 0.15 volume with respect to the 10% by weight sludge water. % And the mixture was stirred and mixed.
【００１５】グルコースの検出試薬としては、グルコー
スオキシダーゼ４５０単位、ベルオキシダーゼ１４単位
及びｏ−トリジン８．４ｍｇの割合で混合した溶液を濾
紙に含浸させて乾燥した尿中のグルコース検出用の試験
紙を用いた。この試験紙の最小検知感度はグルコース３
０ｍｇ／ｄｌであり、スラッジ水に浸漬して３０秒後に
判定した。このスラッジ水の遅延剤添加後の経過日数
と、スラッジ固形分の強熱減量と、試験紙の呈色を表１
に示した。なお、スラッジ水は試験の期間を通じて撹拌
を継続した。As a glucose detection reagent, a filter paper is impregnated with a solution obtained by mixing 450 units of glucose oxidase, 14 units of veroxidase and 8.4 mg of o-tolidine, and a test paper for detecting glucose in urine is dried. Using. The minimum detection sensitivity of this test paper is glucose 3
It was 0 mg / dl and was judged 30 seconds after immersion in sludge water. Table 1 shows the number of days elapsed since the addition of the retarder, the loss on ignition of the sludge solids, and the color of the test paper.
It was shown to. The sludge water was continuously stirred throughout the test.
【００１６】[0016]
【表１】 [Table 1]
【００１７】スラッジ固形分の強熱減量は、スラッジ水
を吸引濾過後、濾過物をアセトンで洗浄・吸引濾過を繰
返し、１０５℃で恒量になるまで乾燥した。この試料を
ＪＩＳ Ｒ ５２０２（ポルトランドセメントの化学分
析方法）強熱減量の分析方法に準拠して測定した。スラ
ッジ固形分の強熱減量の測定は時間と熟練を要し、生コ
ン工場での現場対応が不可能である。遅延剤としてグル
コースを配合し、グルコースの存否を検知してセメント
の強熱減量を間接的に判定する方法は現場での実施にき
わめて有効である。The loss on ignition of the sludge solid content was determined by suction filtration of sludge water, washing of the filtrate with acetone and suction filtration repeatedly, and drying at 105 ° C. until a constant weight was reached. This sample was measured in accordance with JIS R 5202 (a chemical analysis method for Portland cement) and an analysis method for loss on ignition. Measuring the loss on ignition of sludge solids requires time and skill, and it is impossible to respond on site at a ready-mixed concrete plant. A method in which glucose is blended as a retarder and the presence or absence of glucose is detected to indirectly determine the loss on ignition of cement is extremely effective for implementation on site.
【００１８】実施例２ ３０℃で練混ぜられたコンクリートを目開き５ｍｍの篩
を通したモルタルを得た。このモルタルを夏期における
生コン運搬アジテータ車の付着モルタルと想定して５０
℃で２時間ゆっくりと撹拌した後、０．１５ｍｍ篩で水
洗し、スラッジ固形分濃度１０重量％のスラッジ水を得
た。このスラッジ水に、表１で使用したグルコース１５
重量％、グルコン酸２０重量％の溶液に、更に蔗糖を１
０重量％になるように添加・調整した遅延剤溶液を、ス
ラッジ水に対し０．１５容量％の割合で添加し、撹拌・
混合を行った。このスラッジ水の経過日数と、スラッジ
固形分の強熱減量と、試験紙の呈色を表１に示した。な
お、スラッジ水は試験の期間を通じて撹拌を継続した。 Example 2 Concrete mixed at 30 ° C. was passed through a sieve having an opening of 5 mm to obtain a mortar. This mortar is assumed to be a mortar attached to an agitator truck for transporting ready-mixed concrete in the summer season.
After slowly stirring at 2 ° C. for 2 hours, the mixture was washed with a 0.15 mm sieve to obtain sludge water having a sludge solid concentration of 10% by weight. The glucose 15 used in Table 1 was added to the sludge water.
% Gluconic acid and 20% gluconic acid by weight,
The retarder solution added and adjusted to be 0% by weight was added at a ratio of 0.15% by volume to the sludge water, and stirred.
Mixing was performed. Table 1 shows the elapsed days of this sludge water, the ignition loss of the sludge solids, and the coloration of the test paper. The sludge water was continuously stirred throughout the test.
【００１９】[0019]
【表２】 [Table 2]
【００２０】実施例３ 実施例１及び２で得られたスラッジ水の再使用試験を行
った。実験には表３のコンクリート配合を用い、５５リ
ットルのパン型強制ミキサを用いて３０リットルのコン
クリートを９０秒間で練混ぜ、コンクリートの物性を測
定して表４に示した。 配合に用いた使用材料 セメント ：秩父小野田、三菱、電化普通ポルトランドセメントの等量混合品 細骨材 ：大井川産砂 表乾比重２．６４ 粗粒率２．８１ 粗骨材 ：青海産砕石 最大寸法２０ｍｍ 比重２．６７ ＡＥ減水剤：ダーレックス・ＥＲＤＡ（デンカグレース社製）ＡＥ助剤混合品 水 ：水道水 Example 3 A reuse test of the sludge water obtained in Examples 1 and 2 was conducted. In the experiment, 30 liters of concrete were mixed for 90 seconds using a 55 liter pan-type forced mixer using the concrete mixture shown in Table 3 and the physical properties of the concrete were measured. Materials used for blending Cement: Chichibu Onoda, Mitsubishi, Electrified ordinary Portland cement Equivalent mixture Fine aggregate: Sand from Oigawa Surface dry specific gravity 2.64 Coarse grain ratio 2.81 Coarse aggregate: Omi crushed stone 20 mm Specific gravity 2.67 AE water reducing agent: Darrex ERDA (manufactured by Denka Grace) AE auxiliary mixture Water: tap water
【００２１】[0021]
【表３】 [Table 3]
【００２２】[0022]
【表４】 [Table 4]
【００２３】表１ないし表４から明らかなように、２０
重量％グルコン酸溶液に更に還元糖として１５重量％の
グルコースを配合調整した遅延剤は、グルコースを本実
施例の試験紙で検出可能な限り、使用可能な好ましい強
熱減量を有し、安心して使用できることが判明した。本
実施例においては、単に試験紙をスラッジ水で濡らすの
みで３０秒後には判定でき、セメント現場において実施
可能である。As is clear from Tables 1 to 4, 20
The retarder obtained by blending 15% by weight of glucose as a reducing sugar with the weight% gluconic acid solution further has a preferable ignition loss that can be used as long as glucose can be detected by the test paper of the present example, and can be used with confidence. It turned out to be usable. In the present embodiment, the determination can be made after 30 seconds simply by wetting the test paper with the sludge water, and the determination can be performed at the cement site.
【００２４】[0024]
【発明の効果】本発明によれば、スラッジ水を活性に維
持する遅延剤の全部又は一部を還元糖とすることによ
り、還元糖を短時間に簡易な方法で検知できる間はセメ
ントの強熱減量が低く、フレッシュコンクリートに混合
再使用しても良好な物性のコンクリートが得られ、スラ
ッジ水の再使用を一段と容易にする。According to the present invention, by using all or a part of the retarder for maintaining sludge water active as reducing sugar, it is possible to detect the reducing sugar by a simple method in a short time. Low heat loss, good concrete properties can be obtained even when mixed and reused with fresh concrete, and reuse of sludge water is further facilitated.
Claims (5)
保持するために添加する遅延剤の全部又は一部に還元糖
を使用し、上記還元糖と反応して１０分以内に視認でき
る反応を示す試薬を用いて、スラッジ水中のセメントの
活性度を検査することを特徴とするスラッジ水の活性度
検査方法。1. A reducing sugar is used for all or a part of a retarder added to maintain the activity of a sludge water containing cement, and a reaction visible within 10 minutes after reacting with the reducing sugar. A method for inspecting the activity of sludge water, comprising inspecting the activity of cement in the sludge water using a reagent.
反応であることを特徴とする請求項１記載のスラッジ水
の活性度検査方法。2. The method for testing the activity of sludge water according to claim 1, wherein the reaction for visually confirming the activity of the reducing sugar is a color reaction.
試薬を濾紙に吸着させて乾燥した試験紙を使用すること
を特徴とする請求項１又は２記載のスラッジ水の活性度
検査方法。3. The method for testing the activity of sludge water according to claim 1 or 2, wherein a test paper obtained by adsorbing a reagent showing a reaction in which the activity of the reducing sugar can be visually recognized on a filter paper and drying it is used.
ースオキシダーゼ、ペルオキシダーゼ及びｏ−トリジン
からなる試薬であることを特徴とする請求項１ないし３
のいずれかに記載するスラッジ水の活性度検査方法。4. The method according to claim 1, wherein the reducing sugar is glucose, and the reagent is a reagent comprising glucose oxidase, peroxidase and o-tolidine.
The method for inspecting the activity of sludge water according to any one of the above.
保持するために添加する遅延剤が、再使用に際しスラッ
ジ水中に残存していることを検知確認し、遅延剤の存在
が確認されたスラッジ水を再使用することを特徴とする
スラッジ水の使用方法。5. A sludge water added to maintain the activity of the sludge water containing cement, which is detected and confirmed as remaining in the sludge water at the time of reuse. A method of using sludge water, wherein the sludge is reused.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03797098A JP3384737B2 (en) | 1998-02-05 | 1998-02-05 | Sludge water activity test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03797098A JP3384737B2 (en) | 1998-02-05 | 1998-02-05 | Sludge water activity test method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11223628A true JPH11223628A (en) | 1999-08-17 |
| JP3384737B2 JP3384737B2 (en) | 2003-03-10 |
Family
ID=12512434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03797098A Expired - Fee Related JP3384737B2 (en) | 1998-02-05 | 1998-02-05 | Sludge water activity test method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3384737B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003176162A (en) * | 2000-02-15 | 2003-06-24 | Asano Concrete Kk | Concrete-not-hardened sludge granular material and production method therefor |
| JP2006181759A (en) * | 2004-12-27 | 2006-07-13 | Grace Chemicals Kk | Use method of water reducing agent |
| JP2007283724A (en) * | 2006-04-20 | 2007-11-01 | Grace Chemicals Kk | Method for estimating proper use amount of water reducing agent |
| JP2008168541A (en) * | 2007-01-12 | 2008-07-24 | Grace Chemicals Kk | Reusing method for ready mixed concrete or adhering mortar |
| JP2010197125A (en) * | 2009-02-24 | 2010-09-09 | Kitagawa Iron Works Co Ltd | Cement activation level detection method and detector |
| JP2011095183A (en) * | 2009-10-30 | 2011-05-12 | Construction Research & Technology Gmbh | Method for measuring activity of uncured state cement composition, and reuse system using the same |
-
1998
- 1998-02-05 JP JP03797098A patent/JP3384737B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003176162A (en) * | 2000-02-15 | 2003-06-24 | Asano Concrete Kk | Concrete-not-hardened sludge granular material and production method therefor |
| JP2006181759A (en) * | 2004-12-27 | 2006-07-13 | Grace Chemicals Kk | Use method of water reducing agent |
| JP2007283724A (en) * | 2006-04-20 | 2007-11-01 | Grace Chemicals Kk | Method for estimating proper use amount of water reducing agent |
| JP2008168541A (en) * | 2007-01-12 | 2008-07-24 | Grace Chemicals Kk | Reusing method for ready mixed concrete or adhering mortar |
| JP2010197125A (en) * | 2009-02-24 | 2010-09-09 | Kitagawa Iron Works Co Ltd | Cement activation level detection method and detector |
| JP2011095183A (en) * | 2009-10-30 | 2011-05-12 | Construction Research & Technology Gmbh | Method for measuring activity of uncured state cement composition, and reuse system using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3384737B2 (en) | 2003-03-10 |
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