JPH06305804A - Preparation of concrete kneaded product - Google Patents

Preparation of concrete kneaded product

Info

Publication number
JPH06305804A
JPH06305804A JP9422293A JP9422293A JPH06305804A JP H06305804 A JPH06305804 A JP H06305804A JP 9422293 A JP9422293 A JP 9422293A JP 9422293 A JP9422293 A JP 9422293A JP H06305804 A JPH06305804 A JP H06305804A
Authority
JP
Japan
Prior art keywords
water
concrete
agent
reducing agent
cellulose ether
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
JP9422293A
Other languages
Japanese (ja)
Inventor
Takeaki Sasage
剛明 捧
Tsutomu Yamakawa
勉 山川
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.)
Shin Etsu Chemical Co Ltd
Original Assignee
Shin Etsu Chemical 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 Shin Etsu Chemical Co Ltd filed Critical Shin Etsu Chemical Co Ltd
Priority to JP9422293A priority Critical patent/JPH06305804A/en
Publication of JPH06305804A publication Critical patent/JPH06305804A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To provide a preparation method for kneaded concrete with reduced air accompanying nonionic water-soluble cellulose ether. CONSTITUTION:The characteristic of this method for preparing kneaded concrete is to add water and water-reducing admixture in order after addition of hydraulic substance and nonionic water-soluble cellulose ether in the preparation of a kneaded concrete comprising a hydraulic powder such as cement, aggregate, water, nonionic water-soluble cellulose ether and an AE agent and, at least one of water reducing admixture selected from high-performance water-reducing agent, high-performance water-reducing AE agent, water reducing agent and water reducing AE agent.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は耐凍害性に影響を与えず
に水溶性高分子による空気連行性を低減し、打設時に振
動締め固めを必要としないコンクリート混練物の調製方
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 preparing a concrete kneaded product in which air entrainment by a water-soluble polymer is reduced without affecting frost damage resistance, and vibration compaction is not required during casting. is there.

【0002】[0002]

【従来の技術】近年、締め固め不要のコンクリート(バ
イブレーターなどを用いずに型枠の隅々まで充填できる
コンクリート)が開発されている。その中の一つに材料
分離抵抗性を得るために水溶性高分子などをコンクリー
ト中に添加するものがある。このコンクリートは水溶性
高分子が空気連行性を持っているため、骨材などの種類
によってはコンクリート中に粗大な気泡が多く入ってし
まい、耐凍害性を確保するためにAE剤などを添加する
と、高い空気量により普通コンクリートに比べて圧縮強
度が低下し、実用的でなくなるという問題があった。
2. Description of the Related Art In recent years, concrete that does not require compaction (concrete that can fill every corner of a form without using a vibrator) has been developed. One of them is one in which a water-soluble polymer or the like is added to concrete in order to obtain material separation resistance. Since this water-soluble polymer has air-entrainment in this concrete, depending on the type of aggregate, etc., there will be many coarse air bubbles in the concrete, and if AE agents etc. are added to ensure frost damage resistance, However, due to the high air content, the compressive strength is lower than that of ordinary concrete, which is not practical.

【0003】[0003]

【発明が解決しようとする課題】したがって、本発明の
目的は非イオン性水溶性セルロースエーテルが持つ空気
連行性を低減したコンクリート混練物の調製方法を提供
するものである。
SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a method for preparing a concrete kneaded product in which the air entrainment of nonionic water-soluble cellulose ether is reduced.

【0004】[0004]

【課題を解決するための手段】本発明者らは種々検討し
た結果、混和剤の添加混練順序を変えることにより、非
イオン性水溶性セルロースエーテルによる空気連行性が
低減できることを見出し本発明に到達したもので、この
コンクリート混練物の調製方法は、セメント等の水硬性
粉体物質、骨材、水、非イオン性水溶性セルロースエー
テル、AE剤並びに高性能減水剤、高性能AE減水剤、
減水剤およびAE減水剤から選ばれる少なくとも1種の
減水剤系混和剤からなるコンクリート混練物の調製に際
し、水硬性粉体物質と非イオン性水溶性セルロースエー
テルとを添加した後、水、減水剤系混和剤の順に添加混
練することを特徴とするものである。
Means for Solving the Problems As a result of various investigations, the present inventors have found that the air entrainment due to the nonionic water-soluble cellulose ether can be reduced by changing the order of addition and kneading of the admixture, and the present invention has been achieved. This concrete kneaded material is prepared by a method for preparing a hydraulic powder substance such as cement, aggregate, water, nonionic water-soluble cellulose ether, AE agent, high-performance water reducing agent, high-performance AE water reducing agent,
In preparing a concrete kneaded product comprising at least one water-reducing agent admixture selected from a water-reducing agent and an AE water-reducing agent, water and a water-reducing agent are added after adding a hydraulic powder substance and a nonionic water-soluble cellulose ether. It is characterized by adding and kneading the system-based admixture in this order.

【0005】以下、本発明をさらに詳細に説明する。前
述したように、混和剤の添加混練の順序によりコンクリ
ート中に連行される空気量に差の出る理由は、非イオン
性水溶性セルロースエーテルも減水剤系混和剤もセメン
ト粒子に吸着することは以前から知られているが、非イ
オン性水溶性セルロースエーテルが先に多く吸着される
か、減水剤系混和剤が先に多く吸着されるかの違いによ
るものと推測される。例えば、減水剤などがセメント粒
子に先に吸着されてしまうと、非イオン性水溶性セルロ
ースエーテルがセメント粒子に吸着する場所がなくな
り、周りに存在する水の界面活性を下げてしまい、混練
最中に空気を多く巻き込み安定化させてしまうものと考
えられる。また、このセルロースエーテルと減水剤など
とをスラリー状態にして同時に添加混練した場合より
も、その度合いは少なく、コンクリート中に連行される
空気量は中間程度になるものと考えられる。
The present invention will be described in more detail below. As mentioned above, the reason why there is a difference in the amount of air entrained in concrete depending on the order of addition and kneading of admixtures is that both nonionic water-soluble cellulose ethers and water-reducing agent admixtures are adsorbed on cement particles. It is presumed that this is due to the difference between the non-ionic water-soluble cellulose ether being adsorbed first and the water-reducing agent admixture being adsorbed first. For example, if a water reducing agent or the like is adsorbed on the cement particles first, there will be no place for the nonionic water-soluble cellulose ether to be adsorbed on the cement particles, reducing the surface activity of the water present in the surroundings, and during kneading. It is considered that a large amount of air is entrained in and stabilizes. Further, it is considered that the degree thereof is less than that in the case where the cellulose ether and the water reducing agent are made into a slurry state and added and kneaded at the same time, and the amount of air entrained in the concrete becomes intermediate.

【0006】本発明のコンクリート混練物の調製方法に
用いられる非イオン性水溶性セルロースエーテルとして
は、メチルセルロース、エチルセルロースなどのアルキ
ルセルロース;ヒドロキシエチルセルロース、ヒドロキ
シプロピルセルロースなどのヒドロキシアルキルセルロ
ース;ヒドロキシエチルメチルセルロース、ヒドロキシ
プロピルメチルセルロース、ヒドロキシエチルエチルセ
ルロースなどのヒドロキシアルキルアルキルセルロース
が挙げられる。ところで、これらの水溶性高分子の起泡
性は、その水溶液の表面張力と相関が大きく、表面張力
が大きいほど起泡性は少ないと考えられる。コンクリー
ト組成物中に耐凍害性を確保するのに必要なAE剤によ
る空気を充分に導入するには、あらかじめ水溶性高分子
によって導入される空気量を少なく抑えることが好まし
く、この点からするとヒドロキシエチルセルロースが最
も好ましい。この水溶性高分子は 0.2%水溶液で表面張
力が58〜68dyn/cmである。このように空気連行性の少な
い非イオン性水溶性セルロースエーテルを用いて、上記
の添加混練順序を採用すると、耐凍害性に必要なAE剤
をコンクリート中に充分に導入することができる。
Examples of the nonionic water-soluble cellulose ether used in the method for preparing a concrete kneaded product of the present invention include alkyl cellulose such as methyl cellulose and ethyl cellulose; hydroxyalkyl cellulose such as hydroxyethyl cellulose and hydroxypropyl cellulose; hydroxyethyl methyl cellulose and hydroxy. Examples thereof include hydroxyalkylalkylcelluloses such as propylmethylcellulose and hydroxyethylethylcellulose. By the way, the foamability of these water-soluble polymers has a large correlation with the surface tension of the aqueous solution, and it is considered that the larger the surface tension, the less the foamability. In order to sufficiently introduce the air by the AE agent necessary to secure the frost damage resistance in the concrete composition, it is preferable to suppress the amount of air introduced by the water-soluble polymer in advance. Most preferred is ethyl cellulose. The water-soluble polymer has a surface tension of 58-68 dyn / cm in a 0.2% aqueous solution. When the above non-ionic water-soluble cellulose ether having low air entrainment is used and the above order of addition and kneading is adopted, the AE agent required for frost resistance can be sufficiently introduced into concrete.

【0007】このセルロースエーテルの粘度としては、
その1%水溶液をB型粘度計で測定した値が 100〜10,0
00cP、好ましくは 500〜 5,000cPの範囲である。これが
100cP未満では材料分離を防止することができず、10,0
00cPを超えるとコンクリートの粘度が上がり過ぎて流動
性に劣るようになる。セルロースエーテルの添加量は、
これによって連行される空気量と材料分離防止に必要な
粘度によって決定されるが、コンクリート1m3当たり50
〜 1,000g、とくには 100〜 500gが好ましい。この添
加量が少な過ぎるとセルロースエーテルによって連行さ
れる空気量は少なくなるものの材料分離防止に必要な粘
度が得られず、逆に多過ぎるとセルロースエーテルによ
って連行される空気量が多くなるだけでなく、粘度が上
がり過ぎて必要な流動性が得られなくなり、凝結時間が
遅れるなどの弊害が出てくる。
The viscosity of this cellulose ether is
The value of the 1% aqueous solution measured with a B type viscometer is 100 to 100.
It is in the range of 00 cP, preferably 500 to 5,000 cP. This is
If it is less than 100 cP, the material separation cannot be prevented,
If it exceeds 00cP, the viscosity of the concrete will be too high and the fluidity will be poor. The amount of cellulose ether added is
Although This is determined by the viscosity necessary amount of air and material separation preventing entrained concrete 1 m 3 per 50
It is preferably 1,000 g, particularly 100 to 500 g. If the amount added is too small, the amount of air entrained by the cellulose ether will decrease, but the viscosity required to prevent material separation will not be obtained, and if it is too large, not only will the amount of air entrained by the cellulose ether increase, However, the viscosity becomes too high and the required fluidity cannot be obtained, and there are problems such as delaying the setting time.

【0008】使用される高性能減水剤または減水剤とし
ては、高縮合トリアジン系化合物、メラミンスルホン酸
塩のホルマリン縮合物系、ポリカルボン酸塩系誘導体、
変性リグニンスルホン酸塩系、芳香族アミノスルホン酸
系高分子化合物、ナフタリンスルホン酸塩のホルマリン
縮合物系、イソプレン系などが挙げられる。これらの内
では高縮合トリアジン系化合物、ポリカルボン酸塩系誘
導体、イソプレン系が好ましく、コンクリート配合組成
物のスランプフロー値が45〜80cmになるような量で使用
され、一般にセメント等の水硬性粉体物質に対して 1.0
〜 5.0重量%、とくには 1.5〜 3.0重量%の範囲で使用
される。AE剤としては通常のコンクリートに使用され
ている天然樹脂酸系、界面活性剤系などが用いられる。
水硬性粉体物質としては普通ポルトランドセメント、高
炉セメント、シリカセメント、フライアッシュセメント
の単独使用や、高炉スラグ、フライアッシュなどの無機
質粉体、石粉、シリカフュームなどポゾラン反応を有す
るものとの1種以上の併用も可能である。
As the high-performance water reducing agent or water reducing agent used, a highly condensed triazine compound, a formalin condensation product of melamine sulfonate, a polycarboxylic acid salt derivative,
Examples thereof include a modified lignin sulfonate type, an aromatic amino sulfonic acid type polymer compound, a formalin condensate type of naphthalene sulfonate, and an isoprene type. Of these, highly condensed triazine-based compounds, polycarboxylic acid salt-based derivatives, and isoprene-based are preferable, and are used in an amount such that the slump flow value of the concrete mixture composition is 45 to 80 cm. Generally, hydraulic powder such as cement is used. 1.0 for body matter
It is used in the range of up to 5.0% by weight, especially 1.5 to 3.0% by weight. As the AE agent, a natural resin acid-based agent, a surfactant-based agent, or the like which is commonly used for concrete is used.
As the hydraulic powder substance, ordinary Portland cement, blast furnace cement, silica cement, fly ash cement is used alone, or inorganic powder such as blast furnace slag and fly ash, stone powder, silica fume and the like having at least one kind with pozzolanic reaction Can be used together.

【0009】[0009]

【実施例】以下、本発明の具体的態様を実施例および比
較例により説明するが、本発明はこれに限定されるもの
ではない。下記の材料を用いて、表1に示す配合で、表
2に示す添加順序で混練してコンクリートを調製し、下
記の方法でコンクリートの性能を評価し、その結果を表
3に示した。 (材料の明細) セメント:普通ポルトランドセメント(比重:3.15)表
中 Cと略す。 細骨材:信濃川産川砂(比重:2.60、粗粒率:2.79)
〃 S 〃 。 粗骨材:下濁川産採石(比重:2.63、粗粒率:6.72)
〃 G 〃 。 水:信越化学工業社、工場飲料水、表中 Wと略す。 増粘剤:ヒドロキシエチルセルロース(1%水溶液の粘
度: 1,130cP、置換度[MS] 2.0、表中 HECと略す。 減水剤:レオビルド NL-4000(日曹マスタービルダーズ
社製、商品名)表中NLと略す。 AE剤:ヴィンソル(山宗化学社製、商品名)表中AEと
略す。 消泡剤:トリブチルフォスフェート、表中 Tと略す。
EXAMPLES Hereinafter, specific embodiments of the present invention will be described with reference to Examples and Comparative Examples, but the present invention is not limited thereto. Using the following materials, the concrete was prepared by mixing the ingredients shown in Table 1 in the order of addition shown in Table 2, and the performance of the concrete was evaluated by the following method. The results are shown in Table 3. (Material specifications) Cement: Normal Portland cement (specific gravity: 3.15) Abbreviated as C in the table. Fine aggregate: River sand from Shinanogawa (specific gravity: 2.60, coarse grain ratio: 2.79)
〃 S 〃. Coarse aggregate: Shimozurikawa quarry (specific gravity: 2.63, coarse grain ratio: 6.72)
〃 G 〃. Water: Shin-Etsu Chemical Co., Ltd., factory drinking water, abbreviated as W in the table. Thickener: Hydroxyethyl cellulose (viscosity of 1% aqueous solution: 1,130 cP, degree of substitution [MS] 2.0, abbreviated as HEC in the table.) Water reducing agent: Rheobuild NL-4000 (manufactured by Nisso Master Builders, trade name) NL in the table AE agent: Vinsol (manufactured by Yamasou Chemical Co., Ltd., product name) abbreviated as AE Defoaming agent: tributyl phosphate, abbreviated as T in the table.

【0010】[0010]

【表1】 [Table 1]

【0011】[0011]

【表2】 実施例2のみ混練時間を(C+HEC+S+G) 60秒→(W+AE)30秒
→(NL)45秒とした。コンクリートの混練は55リットルパ
ン型ミキサーを用いて 空練り:1分(C+S+G (+HEC, T)) 本練り:3分、内1分(W+AE (+NL)) 、2分((NL),(H
EC), (W)) なお、全比較例の本練り時間を3分にするため、比較例
2の(W+AE+NL) では3分間混練した。
[Table 2] Only in Example 2, the kneading time was set to (C + HEC + S + G) 60 seconds → (W + AE) 30 seconds → (NL) 45 seconds. For concrete mixing, use a 55-liter pan mixer. Empty mixing: 1 minute (C + S + G (+ HEC, T)) Main mixing: 3 minutes, 1 minute (W + AE (+ NL)), 2 Minute ((NL), (H
(EC), (W)) In order to make the main kneading time of all comparative examples 3 minutes, (W + AE + NL) of Comparative Example 2 was kneaded for 3 minutes.

【0012】(コンクリートの評価方法) ・フレッシュコンクリートの評価: 1)スランプ:JIS A-1101のコンクリートのスランプ試
験方法に準じた。 2)スランプフロー:水中不分離性コンクリート・マニ
ュアル、付録1、水中不分離性コンクリートの試験、ス
ランプフロー試験に準じた。(JIS A-1101のコンクリー
トのスランプ試験方法に準じて行い、5分後の拡がりを
測定。) 3)空気量:JIS A-1128の空気室圧力方法に準じた。 ・硬化コンクリートの評価: 1)圧縮強度:JIS A-1108の圧縮強度試験に準じた。 2)凍結融解試験:JIS A-6204のコンクリート用化学混
和剤の付属書2のコンクリートの凍結融解試験方法に準
じて相対動弾性係数を測定し、その値より耐久性指数を
算出した。なお、耐久性指数は80以上を良好とした。
(Evaluation method of concrete) -Evaluation of fresh concrete: 1) Slump: According to the slump test method of concrete of JIS A-1101. 2) Slump flow: According to the underwater non-separable concrete manual, Appendix 1, test for underwater non-separable concrete, slump flow test. (Performance according to JIS A-1101 concrete slump test method and measurement of spread after 5 minutes.) 3) Air volume: According to JIS A-1128 air chamber pressure method. Evaluation of hardened concrete: 1) Compressive strength: According to the compressive strength test of JIS A-1108. 2) Freeze-thaw test: The relative dynamic elastic modulus was measured according to the freeze-thaw test method for concrete in Appendix 2 of the chemical admixture for concrete of JIS A-6204, and the durability index was calculated from the value. A durability index of 80 or more was considered good.

【0013】[0013]

【表3】 [Table 3]

【0014】表3から明らかなように、実施例1による
混練方法ではフレッシュコンクリートの空気量が 4.8%
で良好な耐凍害性が得られるが、比較例1〜3による混
練方法では同程度の空気量にしてもAE剤によって導入
される空気量が少ないため、耐久性指数が低く必要な値
が得られない。比較例4は実施例1と同じ減水剤後添加
であるが、消泡剤を併用した場合である。この場合はA
E剤を多量に使用してフレッシュコンクリートの空気量
を5%程度まで高めても非常に耐凍害性に劣る結果とな
る。これはAE剤によってコンクリート中に連行された
空気までもが消泡剤により粗大化されてしまい、耐凍害
性に有効な微細な空気泡が不足することによると考えら
れる。実施例2は実施例1と同じ添加混練順序である
が、混練時間を短くしたものである。本発明の添加混練
順序によれば、混練時間に影響されずに耐久性指数は良
好な値を示すことが分かる。
As is clear from Table 3, in the kneading method according to Example 1, the fresh concrete has an air content of 4.8%.
In the kneading method according to Comparative Examples 1 to 3, although the amount of air introduced by the AE agent is small, the durability index is low and the required value is obtained. I can't. Comparative Example 4 is the same as Example 1 after the water-reducing agent was added, but in the case where the defoaming agent was used in combination. In this case A
Even if a large amount of the E agent is used to increase the air content of the fresh concrete to about 5%, the frost damage resistance is very poor. It is considered that this is because even the air entrained in the concrete by the AE agent is coarsened by the defoaming agent, and fine air bubbles effective for frost resistance are insufficient. Example 2 has the same addition and kneading sequence as in Example 1, but the kneading time is shortened. It can be seen that according to the order of addition and kneading of the present invention, the durability index shows a good value without being affected by the kneading time.

【0015】[0015]

【発明の効果】本発明によれば、耐凍害性に悪影響を与
えることなく、水溶性高分子による空気連行性を低減で
き、締め固め不要なコンクリートを得ることができる。
EFFECTS OF THE INVENTION According to the present invention, it is possible to obtain concrete that does not require compaction, because it can reduce the air entrainment due to the water-soluble polymer without adversely affecting the frost damage resistance.

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 FI 技術表示箇所 C04B 14:02) Z 2102−4G ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location C04B 14:02) Z 2102-4G

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】セメント等の水硬性粉体物質、骨材、水、
非イオン性水溶性セルロースエーテル、AE剤並びに高
性能減水剤、高性能AE減水剤、減水剤およびAE減水
剤から選ばれる少なくとも1種の減水剤系混和剤からな
るコンクリート混練物の調製に際し、水硬性粉体物質と
非イオン性水溶性セルロースエーテルとを添加した後、
水、減水剤系混和剤の順に添加混練することを特徴とす
るコンクリート混練物の調製方法。
1. A hydraulic powder substance such as cement, aggregate, water,
In the preparation of a concrete kneaded product comprising a nonionic water-soluble cellulose ether, an AE agent, a high-performance water reducing agent, a high-performance AE water reducing agent, a water reducing agent, and at least one water reducing agent-based admixture selected from AE water reducing agents, After adding the hard powder substance and the nonionic water-soluble cellulose ether,
A method for preparing a concrete kneaded product, which comprises adding and kneading water and a water-reducing agent-type admixture in this order.
JP9422293A 1993-04-21 1993-04-21 Preparation of concrete kneaded product Pending JPH06305804A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9422293A JPH06305804A (en) 1993-04-21 1993-04-21 Preparation of concrete kneaded product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9422293A JPH06305804A (en) 1993-04-21 1993-04-21 Preparation of concrete kneaded product

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CN101705732A (en) * 2009-09-30 2010-05-12 吴跃平 Lightweight ceramisite concrete external wallboard and preparation method thereof
CN102503267A (en) * 2011-10-25 2012-06-20 中国十五冶金建设集团有限公司 Flame-retardant type light-weight heat-preservation wall body material mixed with iron tailings and preparation method thereof
CN102704613A (en) * 2012-06-13 2012-10-03 江苏建华新型墙材有限公司 Light heat-insulating wall body material and preparation method thereof
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CN103193414A (en) * 2013-03-08 2013-07-10 蒋成飞 Post-tensioning prestressed concrete beam pore high-strength grouting agent
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CN104193216A (en) * 2014-06-24 2014-12-10 济南大学 Glucose high-polymer marine concrete anti-dispersion agent and preparation method thereof
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JP2015221743A (en) * 2014-04-30 2015-12-10 信越化学工業株式会社 Concrete composition
CN105645833A (en) * 2016-01-05 2016-06-08 萧县良宇混凝土有限责任公司 Concrete additive and preparation method thereof
CN106365498A (en) * 2016-08-27 2017-02-01 宿州兴隆建材有限公司 Poly carboxylic acid water reducing agent and preparation method thereof
CN106517905A (en) * 2016-10-27 2017-03-22 浙江海洋大学 Concrete used for bridges
CN106565160A (en) * 2016-10-27 2017-04-19 浙江海洋大学 Preparation method for concrete for bridges
CN106626053A (en) * 2016-12-14 2017-05-10 郑州航空工业管理学院 Machine-made pre-stressed concrete preparation method
CN106699001A (en) * 2016-12-21 2017-05-24 戚明海 Concrete water reducing agent and preparation method thereof
CN109665741A (en) * 2017-10-14 2019-04-23 廖志琳 A kind of room temperature cement water reducing agent that dispersion rate is high
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Publication number Priority date Publication date Assignee Title
CN101705732A (en) * 2009-09-30 2010-05-12 吴跃平 Lightweight ceramisite concrete external wallboard and preparation method thereof
CN102503267A (en) * 2011-10-25 2012-06-20 中国十五冶金建设集团有限公司 Flame-retardant type light-weight heat-preservation wall body material mixed with iron tailings and preparation method thereof
CN102704613A (en) * 2012-06-13 2012-10-03 江苏建华新型墙材有限公司 Light heat-insulating wall body material and preparation method thereof
CN102704613B (en) * 2012-06-13 2015-03-25 江苏建华新型墙材有限公司 Preparation method for light heat-insulating wall body material
CN103058575B (en) * 2012-12-26 2015-05-13 上海浦东路桥建设股份有限公司 Renewable plant cellulose water reducing agent for cements and preparation method thereof
CN103058575A (en) * 2012-12-26 2013-04-24 上海浦东路桥建设股份有限公司 Renewable plant cellulose water reducing agent for cements
CN103193414A (en) * 2013-03-08 2013-07-10 蒋成飞 Post-tensioning prestressed concrete beam pore high-strength grouting agent
CN103708765A (en) * 2013-12-26 2014-04-09 曹乃镛 Regulator for polycarboxylate pumping agents
CN103708765B (en) * 2013-12-26 2016-01-20 曹乃镛 A kind of polycarboxylic acid series pumping agent conditioning agent
JP2015221743A (en) * 2014-04-30 2015-12-10 信越化学工業株式会社 Concrete composition
CN104193216A (en) * 2014-06-24 2014-12-10 济南大学 Glucose high-polymer marine concrete anti-dispersion agent and preparation method thereof
CN104355564A (en) * 2014-09-29 2015-02-18 殷定江 Dry mixed mortar additive
CN105645833A (en) * 2016-01-05 2016-06-08 萧县良宇混凝土有限责任公司 Concrete additive and preparation method thereof
CN106365498A (en) * 2016-08-27 2017-02-01 宿州兴隆建材有限公司 Poly carboxylic acid water reducing agent and preparation method thereof
CN106517905A (en) * 2016-10-27 2017-03-22 浙江海洋大学 Concrete used for bridges
CN106565160A (en) * 2016-10-27 2017-04-19 浙江海洋大学 Preparation method for concrete for bridges
CN106626053A (en) * 2016-12-14 2017-05-10 郑州航空工业管理学院 Machine-made pre-stressed concrete preparation method
CN106699001A (en) * 2016-12-21 2017-05-24 戚明海 Concrete water reducing agent and preparation method thereof
CN107902942B (en) * 2017-10-13 2020-10-16 广东盛瑞科技股份有限公司 Animal protein foaming agent with high foaming multiple and preparation method thereof
CN109665741A (en) * 2017-10-14 2019-04-23 廖志琳 A kind of room temperature cement water reducing agent that dispersion rate is high

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