JPH03215337A - Stabilizer for mortar - Google Patents
Stabilizer for mortarInfo
- Publication number
- JPH03215337A JPH03215337A JP1117790A JP1117790A JPH03215337A JP H03215337 A JPH03215337 A JP H03215337A JP 1117790 A JP1117790 A JP 1117790A JP 1117790 A JP1117790 A JP 1117790A JP H03215337 A JPH03215337 A JP H03215337A
- Authority
- JP
- Japan
- Prior art keywords
- mortar
- stabilizer
- clay
- cement
- sodium gluconate
- 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
- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 79
- 239000003381 stabilizer Substances 0.000 title claims abstract description 47
- 239000004927 clay Substances 0.000 claims abstract description 28
- 239000004568 cement Substances 0.000 claims abstract description 23
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000176 sodium gluconate Substances 0.000 claims abstract description 21
- 229940005574 sodium gluconate Drugs 0.000 claims abstract description 21
- 235000012207 sodium gluconate Nutrition 0.000 claims abstract description 21
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims abstract description 11
- 239000008103 glucose Substances 0.000 claims abstract description 11
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 claims abstract description 10
- OWEGMIWEEQEYGQ-UHFFFAOYSA-N 100676-05-9 Natural products OC1C(O)C(O)C(CO)OC1OCC1C(O)C(O)C(O)C(OC2C(OC(O)C(O)C2O)CO)O1 OWEGMIWEEQEYGQ-UHFFFAOYSA-N 0.000 claims abstract description 8
- GUBGYTABKSRVRQ-PICCSMPSSA-N Maltose Natural products O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@@H]1O[C@@H]1[C@@H](CO)OC(O)[C@H](O)[C@H]1O GUBGYTABKSRVRQ-PICCSMPSSA-N 0.000 claims abstract description 8
- GUBGYTABKSRVRQ-QUYVBRFLSA-N beta-maltose Chemical compound OC[C@H]1O[C@H](O[C@H]2[C@H](O)[C@@H](O)[C@H](O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@@H]1O GUBGYTABKSRVRQ-QUYVBRFLSA-N 0.000 claims abstract description 8
- 150000001720 carbohydrates Chemical class 0.000 claims abstract description 6
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 9
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 9
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 1
- 239000002253 acid Substances 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 239000000203 mixture Substances 0.000 abstract description 6
- 239000004088 foaming agent Substances 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract 2
- 238000005086 pumping Methods 0.000 description 18
- 230000007613 environmental effect Effects 0.000 description 8
- 230000007423 decrease Effects 0.000 description 4
- 239000006260 foam Substances 0.000 description 4
- 230000029058 respiratory gaseous exchange Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000012190 activator Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 229910052570 clay Inorganic materials 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- -1 aliphatic organic acid Chemical class 0.000 description 1
- 150000005215 alkyl ethers Chemical class 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical group O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 229910052622 kaolinite Inorganic materials 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000002522 swelling effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
Description
【発明の詳細な説明】
預盟辺貝豹
［産業上の利用分野］
本発明は、空洞充填地盤注入等に使用されるモルタル、
特にモンモリ口ナイトを含有する粘土とセメントからな
るモルタルの硬化遅延に使用するモルタル用安定剤に関
する。[Detailed description of the invention] [Industrial application field] The present invention relates to mortar used for cavity filling ground injection, etc.
In particular, the present invention relates to a mortar stabilizer used to retard the hardening of mortar made of clay and cement containing Montmorinite.
［従来の技術］
従来、次のような理由から、空洞充填地盤注入等にモル
タルを使用するに当たって、種々のモルタル用安定剤が
使われている。[Prior Art] Conventionally, various mortar stabilizers have been used when mortar is used for cavity filling, ground injection, etc. for the following reasons.
空洞充填、地盤注入等に用いられるセメントと粘土から
なるモルタル（よ一般的にミキサーで混練後、当該モル
タルを必要とする工事箇所まで配管（圧送パイプ）内を
圧送さ札充填あるいは注入される。この際 圧送ポンプ
または関連する機械に故障が発生したり配管に閉塞や破
損が起きたり、或は掘削等に関連する作業の関係上モル
タルの圧送作業を中断せざるを得ないことが多々ある。Mortar made of cement and clay used for filling cavities, pouring into the ground, etc. (Generally, after being mixed in a mixer, the mortar is pumped through piping (pressure pipes) to the required construction site to fill or inject. At this time, there are many cases where the pressure pump or related machinery malfunctions, the pipes become clogged or damaged, or the mortar pumping operation has to be interrupted due to work related to excavation or the like.
このようにモルタル圧送を中断すると、中断期間にわた
って、ミキサーの中や圧送パイプの中にモルタルが放置
されることになる。その放置時間が２．３時間以上の長
時間になる場合、モルタル中のセメント、粘土が沈降し
水が浮く材料分離を生じる。また、セメントが徐々に凝
結するため流動性が悪くなり、ポンプ圧送が不可能にな
り、さらに長時間放置すると硬化してしまう。If the mortar pumping is interrupted in this way, the mortar will be left in the mixer or in the pumping pipe for the duration of the interruption. If the standing time is longer than 2.3 hours, material separation occurs in which cement and clay in the mortar settle and water floats. Furthermore, as the cement gradually solidifies, its fluidity deteriorates, making pumping impossible, and if it is left for a long time, it will harden.
そして、モルタル圧送を再開するに｛友凝結・硬化しか
けた圧送パイプ中のモルタルを破棄することが必要とな
り、この破棄作業の手間が増える。Then, in order to restart mortar pumping, it is necessary to discard the mortar in the pumping pipe that has begun to solidify and harden, which increases the time and effort of this discarding operation.
更に、圧送パイプ経路が長いと、圧送パイプ中に残存す
る大量のモルタルを破棄することになり、その損失は大
きい。Furthermore, if the pumping pipe route is long, a large amount of mortar remaining in the pumping pipe will be discarded, resulting in large losses.
そのため、長時間モルタル圧送を中断することが多い場
合や、圧送パイプ経路が長い等の条件の作業の場合（志
上記材料分離を少なくすると共１：，ポンプ圧送ができ
るよう流動性を保持しておく時間、いわゆる可使時間を
長くするために、モルタルには安定剤が使用されている
。Therefore, in cases where mortar pumping is often interrupted for a long period of time, or when the pressure pipe route is long, etc. Stabilizers are used in mortar to extend the shelf life, or pot life.
このような観点から使用されるモルタル用安定斉Ｌ 即
ちセメン上とモンモリ口ナイトを含有する粘土からなる
モルタルに使用する安定剤として、一般的にセメントの
遅延剤として知られているグルコン酸ナトリウムが使用
されている。モルタルにグルコン酸ナトリウムを数重量
％使用すれ１′Ｌ］日以上モルタルを放置しても材料分
離を少なくでき、この放置期間中にも流動性を維持でき
るので、可使時間の長期化をもたらし、上記破棄作寛モ
ルタル破棄を行うことなく放置後のポンプ圧送を再開で
きるようになる。From this point of view, sodium gluconate, which is generally known as a retarder for cement, is used as a stabilizer for mortar made of clay containing cement and montmorite. It is used. By using a few percent by weight of sodium gluconate in the mortar, material separation can be reduced even if the mortar is left for more than 1'L], and fluidity can be maintained even during this standing period, resulting in a longer pot life. , it becomes possible to restart the pump pressure feeding after being left unattended without having to discard the mortar.
［発明が解決しようとする課題］
しかしながら、グルコン酸ナトリウムを用いたモルタル
用安定剤で１友次のような問題がある。[Problems to be Solved by the Invention] However, the mortar stabilizer using sodium gluconate has the following problems.
一般的に、モンモリ口ナイトを含有する粘土とセメント
からなるモルタル（よ その硬化が工事現場の環境温度
に変化するため、環境温度に基づき可使時間が異なる性
質（以下、温度依存性という）を有する。具体的１二（
上環境温度が高くなるにしたがい硬化が短時間のうちに
進行して、可使時間が短くなり、一方、環境温度が低く
なれば可使時間が長くなる。Generally, mortar made of clay and cement containing montmori stomite (the hardening of mortar changes depending on the environmental temperature of the construction site, so the pot life differs depending on the environmental temperature (hereinafter referred to as temperature dependence). Has.Specific 12 (
As the environmental temperature increases, curing progresses in a shorter time and the pot life becomes shorter, while as the ambient temperature decreases, the pot life becomes longer.
こうした温度依存性を有する上記モルタルに、セメント
の遅延剤としては一般的なグルコン酸ナトリウムを安定
剤として添加しても、可使時間及び硬化時間の若干の長
期化をもたらすものの、やはり温度依存性が発現してし
まう。Even if sodium gluconate, which is a common cement retardant, is added as a stabilizer to the above mortar, which has such temperature dependence, the pot life and curing time will be slightly prolonged, but the temperature dependence will still increase. is expressed.
温度依存性を備えたままのモルタルに環境温度に拘らず
ほぼ同一の可使時間及び硬化時間を持たせるためには、
環境温度に応じて安定剤の添加率を頻繁に調整する必要
がある。また、モルタル圧送作業中に圧送パイプ内で発
生するモルタル自体の断熱圧縮等によって温度が上がっ
た場合には、モルタルが圧送過程中に硬化してしまい、
圧送パイプを分解してモルタルを破棄したり、圧送パイ
プごと破棄しなければならなかった
本発明は上記問題点を解決するためになさ札モンモリロ
ナイトを含有する粘土とセメントからなるモルタルの温
度依存性を抑制することを目的とする。In order to make mortar that remains temperature dependent have almost the same pot life and hardening time regardless of the environmental temperature,
It is necessary to frequently adjust the stabilizer addition rate depending on the environmental temperature. Additionally, if the temperature rises due to adiabatic compression of the mortar itself that occurs in the pressure pipe during mortar pumping, the mortar will harden during the pumping process.
In order to solve the above-mentioned problems, the pressure pipe had to be disassembled and the mortar discarded, or the whole pressure pipe had to be discarded.The present invention was made to solve the above problems. The purpose is to suppress.
発■レη４成
［課題を解決するための千段］
かかる目的を達成するために、本発明の採用した手段は
、
モンモリロナイトを含有する粘土とセメントからなるモ
ルタルに使用する安定剤であって、グルコース又はマル
トースから選ばれた少なくとも一種以上の糖類とグルコ
ン酸ナトリウムとを含有し、
該グルコン酸ナトリウムと前記糖類とを８：２から２＝
８の範囲の重量比で混合したことをその要旨とする。[A Thousand Steps to Solve the Problem] In order to achieve this object, the means adopted by the present invention is a stabilizer for use in a mortar made of clay and cement containing montmorillonite, which comprises: Contains at least one saccharide selected from glucose or maltose and sodium gluconate, the sodium gluconate and the saccharide being in a ratio of 8:2 to 2=
The gist is that they were mixed at a weight ratio in the range of 8.
このモルタルに使用されるセメントとはボルトランドセ
メント及び混合セメントである。モンモリ口ナイトと１
，ｔ．粘土を構成する粘土鉱物の一種で膨潤性を持つ。The cements used in this mortar are Boltland cement and mixed cement. Montmori mouth night and 1
, t. A type of clay mineral that makes up clay and has swelling properties.
本発明のモルタル用安定剤（以下、単に安定剤という）
で１友 グルコン酸ナトリウムと糖類との重量比が８：
２〜２：８の範囲であり、この範囲から外れると、温度
依存性が大きいまま残存する。Mortar stabilizer of the present invention (hereinafter simply referred to as stabilizer)
The weight ratio of sodium gluconate and sugar is 8:
The ratio is in the range of 2 to 2:8, and outside this range, the temperature dependence remains large.
また本発明の安定剤の好適な使用量１よセメントに対し
て０．１重量％〜３．０重量％の範囲であり、０．１重
量％を下回ると可使時間の長期化を図ることができない
傾向にあり、３．０重量％を越えると可使時間が長くな
り、充填後のモルタルの硬化を遅延させて強度発現の遅
延を招く傾向にある。Further, the preferred usage amount of the stabilizer of the present invention is in the range of 0.1% to 3.0% by weight based on the cement, and if it is less than 0.1% by weight, the pot life will be extended. If the content exceeds 3.0% by weight, the pot life becomes longer, and the hardening of the mortar after filling tends to be delayed, leading to a delay in strength development.
本発明の安定剤の添加時期について１友適宜決定すれば
よく、モルタルを調整するどの時点で添加しても良い。The timing of adding the stabilizer of the present invention may be determined as appropriate, and the stabilizer may be added at any time during preparation of the mortar.
又、安定剤の添加されるモルタル｛上モンモリ口ナイト
を含有する粘土とセメントからなるモルタルに起泡剤を
添加した気泡モルタル（エアモルタル）であっても良い
。Further, a mortar to which a stabilizer is added (a foam mortar (air mortar) in which a foaming agent is added to a mortar made of clay and cement containing montmori stomite) may also be used.
本発明の安定剤が使用されるモルタルにおけるセメント
とモンモリ口ナイト含有粘土との重量比は、１：４〜１
０： １の範囲が好ましく、粘土に含まれるモンモリロ
ナイトの含有量は、粘土に対して５重量％以上が好まし
い。この範囲外の配合のモルタルに本発明の安定剤を使
用しても、温度依存性の抑制効果が得られない。In the mortar in which the stabilizer of the present invention is used, the weight ratio of cement and clay containing montmori stomite is 1:4 to 1.
The range of 0:1 is preferable, and the content of montmorillonite contained in the clay is preferably 5% by weight or more based on the clay. Even if the stabilizer of the present invention is used in a mortar having a composition outside this range, the effect of suppressing temperature dependence cannot be obtained.
［発明の作用・効果］
本発明の安定剤（上上記した構成を備えることにより、
モンモリ口ナイトを含有する粘土とセメントからなるモ
ルタルの環境温度に対する硬化進行の程度をほぼ均一に
維持して、環境温度変化の影響を受けることなく可使時
間の長期化をはかり、温度依存性を抑制する。この結果
、本発明の安定剤添加済みの上記モルタル（よ夏期．冬
期等の季節変化や内部発熱をもたらす圧送状況の変化を
問わず、モルタル圧送の中断期間中に放置されても硬化
することがない。[Actions and Effects of the Invention] The stabilizer of the present invention (by having the above-described structure,
By maintaining the degree of hardening of mortar made of clay and cement containing Montmori Kuchinite almost uniformly with respect to the environmental temperature, we aim to extend the usable life without being affected by changes in the environmental temperature, and to reduce temperature dependence. suppress. As a result, the above-mentioned mortar to which the stabilizer of the present invention has been added does not harden even if left unattended during mortar pumping interruptions, regardless of seasonal changes such as summer or winter, or changes in pumping conditions that cause internal heat generation. do not have.
このため、グルコン酸ナトリウム単独の従来の安定剤に
おいて必要であった温度変化に基づく添加率調整を、省
略することができるばかりが、モルタル圧送作業中に起
きる断熱圧縮によってモルタルの温度が上昇した場合で
も、可使時間が長時間のまま変化しないので、圧送過程
中の硬化がなく、掘削現場の安定したモルタルの供給を
図ることができる。更に、圧送パイプの分解 モルタル
及び圧送パイプの破棄を必要としないので、作業工数の
低減やコスト低下が可能となる。For this reason, it is possible to omit the addition rate adjustment based on temperature changes that was necessary with the conventional stabilizer using sodium gluconate alone, but if the temperature of the mortar rises due to adiabatic compression that occurs during mortar pumping operation, However, since the pot life remains unchanged for a long time, there is no hardening during the pumping process, and a stable supply of mortar at the excavation site can be achieved. Furthermore, since it is not necessary to disassemble the pressure pipe and discard the mortar and the pressure pipe, it is possible to reduce the number of work steps and costs.
又、モルタルのブリージング（材料分離）が非常に少な
く経済性に優れたモルタル用安定剤を提供することがで
きる。Furthermore, it is possible to provide a stabilizer for mortar that causes very little mortar breathing (material separation) and is highly economical.
［実施例］
次１′Ｘ，以下の実施例をもって本発明を詳細に説明す
る。[Examples] Next, the present invention will be explained in detail with reference to the following examples.
施１ １ （刀期 生調査
水７００ｇに、本発明安定剤（グルコン酸ナトリウム：
糖類＝６：４）を第１表の添加率で溶解し、三興コロイ
ド化学株式会社製の起泡剤（商品名：サンコーＧＰＮＯ
．１，成分：脂肪族系有機酸誘導体であるアニオン性活
性剤とポリオキシアルキレンアルキルエーテル型非イオ
ン性活性剤との配合物に、親木コロイド高分子起泡安定
剤並びに高分子の合成樹脂を配合したもの）０．５ｇを
添加し、岡山産クレーサンド（粘土と砂の混合物で糾雲
母系粘土とモンモリロナイトと石英が主成分）１４０ｇ
と普通ボルトランドセメント３００ｇ添加し、空気量を
１５％にした気泡モルタルを調整した。Application 1 1 (To 700g of raw research water, add the stabilizer of the present invention (sodium gluconate:
Saccharides = 6:4) were dissolved at the addition rate shown in Table 1, and a foaming agent manufactured by Sanko Colloidal Chemical Co., Ltd. (product name: Sanko GPNO) was dissolved.
．． 1. Ingredients: A blend of an anionic activator, which is an aliphatic organic acid derivative, and a polyoxyalkylene alkyl ether type nonionic activator, and a parent tree colloidal polymeric foaming stabilizer and a polymeric synthetic resin. 140g of clay sand from Okayama (a mixture of clay and sand, the main components of which are mica clay, montmorillonite, and quartz)
A cellular mortar was prepared by adding 300 g of ordinary Bortland cement and adjusting the air content to 15%.
上記調整済みのモルタルについて、以下の物性について
測定した。その結果を第１表に示す。The following physical properties of the prepared mortar were measured. The results are shown in Table 1.
Ａ： フロー値（２０℃環境下）
３０ｃｍ角のプラスチック製板の中央１：，高さ８ｃｍ
内径８ｃｍの金属円筒を置いて試料を満たし、静かに引
き上げ１分後と３分後の縦・横の広がりの平均イ直 単
位［ｃｍ］
Ｂ： ブリージング率
モルタルを１日放置した後の全体のモルタルに対する浮
氷の百分率゛
Ｃ：
可使時間
ポンプ圧送可能な限界フロー値２
する時間
Ｏｃｍに達
第１表に示すように、本発明の安定剤を使用すれ１よ、
そのフロー値を安定剤無添加のフロー値から、従来の安
定剤であるグルコン酸ナトリウムと同様に、大きく変化
させないまま、ブリージング率を低下させることができ
る。更１：，可使時間について（よ安定剤無添加の可使
時間に比べて長時間のものとすることができる。つまり
、本発明の安定剤未 フロー値の維持，ブリージング率
の低下回避 可使時間の長期化等に基づいて、モルタル
の扱いの簡略化をもたらすという利点を備え、モルタル
用安定剤として必要な性能を満たしていることが明らか
である。A: Flow value (under 20℃ environment) Center 1 of 30cm square plastic plate:, Height 8cm
Place a metal cylinder with an inner diameter of 8 cm, fill it with the sample, and gently pull it up. Average vertical and horizontal spread after 1 minute and 3 minutes. Unit [cm] B: Breathing rate of the entire mortar after leaving it for one day. Percentage of floating ice in relation to mortar ゛C: Working time Time to reach the pumpable limit flow value 2 Ocm As shown in Table 1, using the stabilizer of the present invention 1,
Similar to the conventional stabilizer sodium gluconate, the breathing rate can be reduced without significantly changing the flow value from the flow value without the addition of a stabilizer. Further 1: Regarding the pot life (the pot life can be longer than the pot life without the addition of stabilizers), it is possible to maintain the flow value without adding the stabilizer of the present invention and avoid a decrease in the breathing rate. It is clear that it has the advantage of simplifying the handling of mortar based on the extended usage time, etc., and satisfies the performance required as a mortar stabilizer.
又、本発明の安定剤に関する添加率による影響を見ると
、０．０５％では可使時間があまり延長されず、４％で
は可使時間が長すぎて、モルタル硬化の過度の遅延を招
くので、０． １〜３．０重量％の添加率が望ましい
。Also, looking at the effect of the addition rate on the stabilizer of the present invention, 0.05% does not extend the pot life very much, while 4% makes the pot life too long, leading to excessive delay in mortar hardening. ,0. A desirable addition rate is 1 to 3.0% by weight.
これに対して、グルコース又はマルトース単独の安定剤
で（よ グルコン酸ナトリウムと比較して可使時間があ
まり延長されず、モルタル用安定剤としでは不適切であ
ることがわかる。In contrast, stabilizers using glucose or maltose alone do not extend pot life much compared to sodium gluconate, and are therefore unsuitable as stabilizers for mortar.
施ｌ ２ 温庁依子 調査
水８２０ｇに、本発明の安定剤を０．８％添加し、岡山
産クレーサンド（糾雲母系粘土とモンモリロナイトと石
英が主成分）１６５ｇを添加し、セメント３６０ｇを添
加し、混練りしたモルタルを調整した。尚、本発明の安
定剤の成分（グルコン酸ナトリウム，グルコース又はマ
ルトース）の重量比について（よ第２表に示すよう変化
させた。2. To 820 g of Oncho Yoriko survey water, 0.8% of the stabilizer of the present invention was added, 165 g of clay sand from Okayama (mainly composed of mica clay, montmorillonite, and quartz), and 360 g of cement were added. Then, the mixed mortar was adjusted. The weight ratio of the components (sodium gluconate, glucose, or maltose) of the stabilizer of the present invention was changed as shown in Table 2.
上記のモルタルを５℃，２０℃，３５℃，５０℃の温度
で、それぞれ養生した場合の可使時間を測定し、その結
果を第２表に示す。The above mortar was cured at temperatures of 5°C, 20°C, 35°C, and 50°C, and its pot life was measured, and the results are shown in Table 2.
第２表に示す結果から、グルコン酸ナトリウムとグルコ
ースの重量比が８＝２から２二８の範囲で（上温度が上
昇しても低温時（５℃）の可使時間が高温度でも維持さ
れたままであり、温度依存性が抑制されている。From the results shown in Table 2, it can be seen that when the weight ratio of sodium gluconate and glucose is in the range of 8=2 to 228 (upper temperature increases, the pot life at low temperature (5℃) is maintained even at high temperature. The temperature dependence is suppressed.
これに対して、グルコン酸ナトリウムあるいはグルコー
ス単独で｛よ低温時（５℃）の可使時間が温度上昇とと
もに低下していき、５０℃では約１／２〜１／３に低下
する。つまり、温度依存性が大きいままであることがわ
かる。On the other hand, the pot life of sodium gluconate or glucose alone at lower temperatures (5°C) decreases as the temperature rises, and at 50°C it decreases to about 1/2 to 1/3. In other words, it can be seen that the temperature dependence remains large.
これらのことから、本発明の安定剤をモルタルに添加す
ることにより、モルタルを圧送する際に従来必要であっ
た環境温度に応じた安定剤の添加率調整や圧送中断時の
圧送パイプ内のモルタル破棄等を省略することが初めて
可能となる。For these reasons, by adding the stabilizer of the present invention to mortar, it is possible to adjust the addition rate of the stabilizer according to the environmental temperature, which was conventionally necessary when pumping mortar, and to reduce the amount of mortar in the pumping pipe when pumping is interrupted. For the first time, it becomes possible to omit disposal, etc.
３ ：８ 依 調査： 泡モルタル
実施例 ２と同じ配合に係るモルタルに、起泡剤を０．
５ｇ添加して空気量１０％の気泡モルタルを調整した。3:8 Investigation: Foam mortar Example 2 A foaming agent was added to the mortar having the same composition as in Example 2.
A foam mortar with an air content of 10% was prepared by adding 5 g.
ただし、モルタルに添加する安定剤は０． ８重量％
とし、本発明の安定剤におけるグルコン酸ナトリウムと
糖類（グルコース又はマルトース）の重量比は５：５で
ある。However, the stabilizer added to the mortar is 0. 8% by weight
The weight ratio of sodium gluconate and sugar (glucose or maltose) in the stabilizer of the present invention is 5:5.
そして、実施例 ２と同一の温度条件における可使時間
を測定し、その結果を第３表に示す。Then, the pot life was measured under the same temperature conditions as in Example 2, and the results are shown in Table 3.
第３表に示す結果から、使用対象のモルタルが気泡モル
タルであっても、やはり本発明の安定剤を添加すること
により温度依存性が抑制されるが、グルコン酸ナトリウ
ムあるいはグルコースあるいはマルトース単独の安定剤
では温度依存性が大きいままである。From the results shown in Table 3, even if the mortar to be used is a foam mortar, the temperature dependence can still be suppressed by adding the stabilizer of the present invention, but the stability of sodium gluconate, glucose, or maltose alone The temperature dependence remains large for the agent.
４ ゛日 依 調査： 土の影 次に、粘土種類に対する効果の有無について説明する。4゛Japanese Investigation: Shadow of the soil Next, whether or not there is an effect on the type of clay will be explained.
第４表に示す配合でモルタルを調整し、０．６重量％（
対セメント）の重量比で本発明の安定剤（グルコン酸ナ
トリウムとグルコースの重量比＝５＝５）を添加した場
合の温度依存性を測定した。A mortar was prepared according to the composition shown in Table 4, and 0.6% by weight (
The temperature dependence was measured when the stabilizer of the present invention (weight ratio of sodium gluconate to glucose = 5 = 5) was added at a weight ratio of (to cement).
尚、使用した粘土（上 モンモリロナイトを含有せずカ
オリナイトを主成分とする岡山産のモンモリロナイト非
含有粘土と、モンモリロナイトを主成分とする岡山産の
ベントナイトとを用いた。The clays used (above) were montmorillonite-free clay from Okayama, which does not contain montmorillonite and whose main component is kaolinite, and bentonite, which is produced in Okayama and whose main component is montmorillonite.
第４表に示す結果から、粘土に含有されるモンモリロナ
イトによって温度依存性の抑制効果の有無が歴然として
おり、モンモリロナイトを含有する粘土を用いないモル
タルで１友本発明の安定剤を添加しても効果がなく、モ
ンモリ口ナイトを含有する粘土を用いたモルタルで（よ
温度依存性が抑制されている。From the results shown in Table 4, it is clear that montmorillonite contained in clay has a temperature-dependent suppressing effect, and even if the stabilizer of the present invention is added to a mortar that does not use clay containing montmorillonite, There is no effect, and mortar using clay containing Montmori Kuchinite (temperature dependence is well suppressed).
Claims (1)
るモルタルに使用する安定剤であって、グルコース又は
マルトースから選ばれた少なくとも一種以上の糖類とグ
ルコン酸ナトリウムとを含有し、 該グルコン酸ナトリウムと前記糖類とを８：２から２：
８の範囲の重量比で混合したことを特徴とするモルタル
用安定剤。[Scope of Claims] 1. A stabilizer used in mortar made of clay and cement containing montmorillonite, which contains at least one type of saccharide selected from glucose or maltose and sodium gluconate; The ratio of sodium acid and the sugar is 8:2 to 2:
A stabilizer for mortar, characterized in that it is mixed in a weight ratio of 8 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1117790A JPH03215337A (en) | 1990-01-20 | 1990-01-20 | Stabilizer for mortar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1117790A JPH03215337A (en) | 1990-01-20 | 1990-01-20 | Stabilizer for mortar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03215337A true JPH03215337A (en) | 1991-09-20 |
Family
ID=11770779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1117790A Pending JPH03215337A (en) | 1990-01-20 | 1990-01-20 | Stabilizer for mortar |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03215337A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2815343A1 (en) * | 2000-10-18 | 2002-04-19 | Roquette Freres | New stabilized concentrated gluconic acid compositions, useful in the preparation or as additives to mineral hydraulic binders such as cements |
| JP2002160955A (en) * | 2000-09-18 | 2002-06-04 | Sumitomo Osaka Cement Co Ltd | Setting retarder for back-fill grout, back-fill grout and its grouting method |
-
1990
- 1990-01-20 JP JP1117790A patent/JPH03215337A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002160955A (en) * | 2000-09-18 | 2002-06-04 | Sumitomo Osaka Cement Co Ltd | Setting retarder for back-fill grout, back-fill grout and its grouting method |
| FR2815343A1 (en) * | 2000-10-18 | 2002-04-19 | Roquette Freres | New stabilized concentrated gluconic acid compositions, useful in the preparation or as additives to mineral hydraulic binders such as cements |
| WO2002032846A1 (en) * | 2000-10-18 | 2002-04-25 | Roquette Freres | Novel concentrated, stable and low-sodium gluconic acid composition |
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