JPH03141141A - Additive for rolled concrete - Google Patents
Additive for rolled concreteInfo
- Publication number
- JPH03141141A JPH03141141A JP27836589A JP27836589A JPH03141141A JP H03141141 A JPH03141141 A JP H03141141A JP 27836589 A JP27836589 A JP 27836589A JP 27836589 A JP27836589 A JP 27836589A JP H03141141 A JPH03141141 A JP H03141141A
- Authority
- JP
- Japan
- Prior art keywords
- additive
- concrete
- hydration
- cement
- compound
- 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
- 239000000654 additive Substances 0.000 title claims abstract description 25
- 230000000996 additive effect Effects 0.000 title claims abstract description 22
- 239000011382 roller-compacted concrete Substances 0.000 title abstract 2
- 150000001875 compounds Chemical class 0.000 claims abstract description 16
- 229920001461 hydrolysable tannin Polymers 0.000 claims abstract description 8
- 239000004094 surface-active agent Substances 0.000 claims description 2
- 239000004568 cement Substances 0.000 abstract description 17
- 238000006703 hydration reaction Methods 0.000 abstract description 16
- 230000036571 hydration Effects 0.000 abstract description 13
- 230000020169 heat generation Effects 0.000 abstract description 11
- 239000002253 acid Substances 0.000 abstract description 6
- 230000007062 hydrolysis Effects 0.000 abstract description 3
- 238000006460 hydrolysis reaction Methods 0.000 abstract description 3
- -1 phenolic carboxylic acid Chemical class 0.000 abstract description 3
- 235000013824 polyphenols Nutrition 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 150000001720 carbohydrates Chemical class 0.000 abstract 2
- 238000005056 compaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000005336 cracking Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000011398 Portland cement Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- 150000004645 aluminates Chemical class 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical compound OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 description 2
- 210000001144 hymen Anatomy 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 229920005610 lignin Polymers 0.000 description 2
- 239000002736 nonionic surfactant Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- TUSDEZXZIZRFGC-UHFFFAOYSA-N 1-O-galloyl-3,6-(R)-HHDP-beta-D-glucose Natural products OC1C(O2)COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC1C(O)C2OC(=O)C1=CC(O)=C(O)C(O)=C1 TUSDEZXZIZRFGC-UHFFFAOYSA-N 0.000 description 1
- 239000001263 FEMA 3042 Substances 0.000 description 1
- LGCMKPRGGJRYGM-UHFFFAOYSA-N Osalmid Chemical compound C1=CC(O)=CC=C1NC(=O)C1=CC=CC=C1O LGCMKPRGGJRYGM-UHFFFAOYSA-N 0.000 description 1
- LRBQNJMCXXYXIU-PPKXGCFTSA-N Penta-digallate-beta-D-glucose Natural products OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-PPKXGCFTSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- ULUAUXLGCMPNKK-UHFFFAOYSA-N Sulfobutanedioic acid Chemical class OC(=O)CC(C(O)=O)S(O)(=O)=O ULUAUXLGCMPNKK-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 150000001346 alkyl aryl ethers Chemical class 0.000 description 1
- 150000008051 alkyl sulfates Chemical class 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000011400 blast furnace cement Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 235000004515 gallic acid Nutrition 0.000 description 1
- 229940074391 gallic acid Drugs 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- PSZYNBSKGUBXEH-UHFFFAOYSA-M naphthalene-1-sulfonate Chemical compound C1=CC=C2C(S(=O)(=O)[O-])=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-M 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920002258 tannic acid Polymers 0.000 description 1
- LRBQNJMCXXYXIU-NRMVVENXSA-N tannic acid Chemical compound OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-NRMVVENXSA-N 0.000 description 1
- 235000015523 tannic acid Nutrition 0.000 description 1
- 229940033123 tannic acid Drugs 0.000 description 1
- 229920001864 tannin Polymers 0.000 description 1
- 235000018553 tannin Nutrition 0.000 description 1
- 239000001648 tannin Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/38—Polysaccharides or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
- C04B2103/0089—Agents for reducing heat of hydration
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
Abstract
Description
【発明の詳細な説明】
［Ｊ］！業りの利用分野］
本発明は、転圧：コンクリート及びモルタルの特性を改
ｆｌｌＦするための添加剤に関する。[Detailed description of the invention] [J]! FIELD OF APPLICATION OF THE INVENTION The present invention relates to compaction: an additive for modifying the properties of concrete and mortar.
［従来の技術及び発明が解決しようと一４゛る問題点コ
近年、我が国においても、転圧コンクリートが舛及して
きている。この転圧コンクリート（ＲＣＣ）は、ゼロス
ランプの７ｔンクリートであり、通常のコンクリートの
性状とかなり異なる。特に、極端に水分を減少さけるた
めに、ヒメン］・の水和に伴う発熱並びに直射日光によ
る水分蒸発により、混練から施工までの運搬時間の間に
充填率が低ドし、強度の低下やひびわれが問題となり、
夏期の施■二の問題となり、夏期の施［の問題点とじて
指摘されている。[14 Problems to be Solved by Conventional Technologies and Inventions] In recent years, compacted concrete has become widespread in Japan as well. This rolled compacted concrete (RCC) is a 7-ton concrete with zero slump, and its properties are quite different from normal concrete. In particular, in order to avoid an extreme decrease in moisture, heat generation due to hydration of Hymen and moisture evaporation due to direct sunlight lower the filling rate during the transportation time from kneading to construction, resulting in a decrease in strength and cracking. becomes a problem,
It has become a problem with summer delivery, and has been pointed out as a problem with summer delivery.
また、転圧コンクリートの施工は、３０ｃｍの厚さ、Ｌ
でと云われており、重交通の場合に３０ｃｍ以１：の板
厚に施ｒするため、−層材らする際に付着の問題点が、
指摘されている。In addition, the construction of compacted concrete is 30cm thick, L
It is said that in case of heavy traffic, the problem of adhesion occurs when layering materials because it is applied to a board with a thickness of 30 cm or more.
It has been pointed out.
従って、本発明者らは、ｎｉｊ記の転圧コンクリートの
暑中における欠点に関して、鋭意検、？、Ｉ Ｌ、た結
果、転圧：コンクリートの８中の施１４で生じるひび割
れが、水和反応が外気温により川に促進され“〔−１ン
クリートが高温になることによる温度ひび割れにトな原
因があることを見出した。従って、本発明は、水和反応
による発熱を抑制孝゛ることかで３′！、：コンクリー
トの強度の向■二でさる転圧−Ｉン／Ｊ１−ト用添加剤
を提供４゛る、−とを（Ｉ的に４る。本発明は、史に、
水和発熱抑制効果を有す°ると同時に、転圧〕１ンクリ
ート舖装の暑中打設における充填率の輸送による低ドを
防ｌ二でき、ひいては、強度低トを起、−シ、問題とな
っている転圧；１ンクリートヘ適用できる添加剤を提供
す−る、−とを［１的に４る。Therefore, the present inventors conducted a thorough investigation regarding the drawbacks of the compacted concrete described in Nij. , I L, as a result, rolling compaction: The cracks that occur at 14 of 8 in the concrete are caused by the hydration reaction being promoted by the outside temperature and temperature cracks due to the concrete becoming high temperature. Therefore, the present invention aims to improve the strength of concrete by suppressing heat generation due to hydration reaction. The present invention is based on the following:
At the same time, it has the effect of suppressing heat generation due to hydration, and at the same time, it can prevent a reduction in filling rate due to transport during rolling concrete casting in hot weather, which in turn causes a reduction in strength. 1. Provides additives that can be applied to concrete;
し問題点を解決４るための手段］
本発明は、加水分解性タンニン化合物を含有する、−と
を特徴と４る転圧コンクリート用添加剤を提供４る。ま
た、その組成割合は、前記加水分解性クン−ン化合物を
、１〜９９Ｉｆ（ｉ正％、界面活性剤を、９９〜１虫猜
％の割合で含有４゛るものが好適′ＣＩ））る。Means for Solving the Problems] The present invention provides an additive for compacted concrete containing a hydrolyzable tannin compound. In addition, the composition ratio preferably contains the hydrolyzable compound at a ratio of 1 to 99 If (i%), and a surfactant at a ratio of 99 to 1% (CI). Ru.
本発明者らは、転汁：フＪンクリートのη中の施［（生
じるひびわれについて、詳細に検ｔ・１シたところ、［
メントの水和が外気温の影ｔ１により、史に促進されて
一１ンクリートが高温になることによる温度ひび割れが
王な原因であることを見出した。The present inventors conducted a detailed inspection of the cracks that occur during the η of the concrete.
It has been found that the main cause is temperature cracking caused by the hydration of the concrete being accelerated by the influence of the outside temperature t1, which causes the concrete to reach a high temperature.
実際に、転圧丁１ンクリートの施［に際して、温度測定
したところ、外気温より、最高で２０°Ｃもの温度−１
： ｒ＋−があり、打設後数［Ｊにして、２ｒＩｒＱ幅
のひび割れが発生した。In fact, when we measured the temperature during the application of one compact concrete, we found that the temperature was up to 20°C lower than the outside temperature.
: There was r+-, and a crack with a width of 2rIrQ occurred several times after pouring.
本発明は、この知見に基づいてなされた。The present invention was made based on this knowledge.
従来の遅延剤や減水剤は、３０°Ｃ程度の温度での打設
の場合、例えば、過剰に添加して凝結を遅延させても、
その後の水和が急速に起こり、発熱を抑制４゛ることか
できない、（セメント技術年報、４１．８６〜８９（昭
和６２年）参照）。Conventional retardants and water-reducing agents can be used, for example, in the case of pouring at temperatures around 30°C, even if they are added in excess to retard setting.
Subsequent hydration occurs rapidly, and heat generation can only be suppressed by 4 degrees (see Cement Technology Annual Report, 41.86-89 (1988)).
そこで、本発明者らは、水和発熱を抑制し、温度ひび’
ｊ’＋Ｉｌれを防ぐために、種々の添加剤を検シ・すし
た、その結果、加水分解性タンニン化合物を添加したと
ころ、転圧コンクリートの施工において、優れた特性が
得ちれることを見出した。その結果、本発明に至った。Therefore, the present inventors aimed to suppress hydration heat generation and reduce temperature cracks.
In order to prevent j' + Il slippage, we tested various additives and found that the addition of a hydrolyzable tannin compound provided excellent properties in the construction of compacted concrete. . As a result, the present invention was achieved.
本発明の流力［１剤に使用する加水分解性クンーン化合
物は、フェノール性カルボン酸と糖がニスデル結合した
化合物であり、その代表的な例の構造式を第１図に示す
、即ち、本発明の加水分解性タンニン化合物は、第１図
の構造式℃示Ｖガ［１クンニーン（１）［ｇａｌｌｏｔ
ａｎｎｉｎ］や：Ｊリラギン（Ｉ）［ｃｏｒｉｌａｇｉ
ｎ］、キブラギン酸（ＩＩ）［ｃｈｃｂｕｌａｇｉｃ
ａｃｉｄ］、キプラニン酸（■）［ｃｈｃｂｕｌｉｎｉ
ｃ ａｃｉｄ（Ｎ ）］などの化合物を主成分とするも
のであり、また、タンニン酸として知られるｍ−ガ［１
イル没食ｆ・酸なども用いることができる。The hydrolyzable compound used in the hydrolytic agent [1] of the present invention is a compound in which a phenolic carboxylic acid and a sugar are bonded to Nisdel, and the structural formula of a typical example thereof is shown in FIG. The hydrolyzable tannin compound of the invention has the structural formula shown in FIG.
annin] and: J lilagin (I) [corilagi
n], quibulagic acid (II) [chcbulagic
acid], cypranic acid (■) [chcbulini
The main component is compounds such as m-ga[1], which is known as tannic acid.
Il gallic acid, etc. can also be used.
これらの化合物は、加水分解により浸食ｒ−酸や−１−
シーブ酸や糖になる。また、これらの物質は、酸性及び
アルカリ性で加水分解を起こし易い、−とが良く知られ
ている。これらの分解生成物は、ヒメン１〜に対４“る
水和抑制効果が著しく大きく、その際に、水和発熱を抑
制Ｖることかできる。These compounds can be eroded by hydrolysis into r-acids and -1-
It becomes siebic acid and sugar. It is also well known that these substances are susceptible to hydrolysis under acidic and alkaline conditions. These decomposition products have a significantly greater hydration inhibiting effect than Hymen 1 to 4, and can suppress the hydration heat generation at that time.
史に、本発明の水和発熱抑制性添加剤は、他の混和削即
ち、リグ；−ン系、ナフタリンスルボン酸塩ホルマリン
縮合物などの減水剤やリグニン系やオキンカルボン酸塩
系、珪゛フッ素化物などの従来から良く知られた遅延剤
と併用することもできる。Historically, the hydration exotherm suppressing additive of the present invention has been used in conjunction with other water reducing agents, such as lignin-based, naphthalene sulfonate formalin condensate, lignin-based, oxycarboxylate-based, silicone, etc. It can also be used in combination with conventionally well-known retarders such as fluorides.
また、従来から湿潤剤として使用されているボノオキシ
エチレンアルキルアリルエーラルなどのノニオン系界面
活性剤やアルキル硫酸塩、ジアルキルスルソオ琥珀酸塩
などのアニオン界面活性剤や４１−起泡性ノニオン界面
活性剤として知られるブＩＪビレングリコールエチレン
グリコールヅＩ−Ｉ ｙクボリマーなどと併用しても良
い。In addition, nonionic surfactants such as bonooxyethylene alkylaryl ether, which have been conventionally used as wetting agents, anionic surfactants such as alkyl sulfates and dialkyl sulfosuccinates, and 41-foaming nonionic surfactants. It may be used in combination with a known activator such as bilene glycol ethylene glycol dichlorimer.
本発明の転圧二１ンクリート用添加剤を用いることがで
きるセメントとしては、婢通、中庸熱、＋１４゜強、超
早強、耐硫酸塩、白色ポルトランドセメントやシリカセ
メント、フライアッシュセメント、高炉セメントなどの
混合セメント或いはカルシラｌ、アルミネートを主成分
とするアルミナセメントや、Ｃ，、Ａ、ＣａＦ、を主成
分とする超速硬セメントやカルンウ１１ナル）オアルミ
ネート（Ｃ４ＡｓＳ）ヲ用イた特殊セメントなどがｉｒ
（能であり、特に、制限されるものではない。The cements that can be used with the additive for compacted concrete of the present invention include low-grade, medium-heat, +14°+, ultra-early strength, sulfate-resistant, white Portland cement, silica cement, fly ash cement, and blast furnace cement. Mixed cement such as cement, alumina cement whose main components are calcilyl, aluminate, ultra-fast hardening cement whose main components are C, A, CaF, and special cement for use with aluminate (C4AsS). etc. are IR
(It is possible, but there are no particular restrictions.
また、本発１すＩの転圧−７ンクリート用ヒメント添加
剤は、セメントに対して、０．０５虫ｉ）％〜３．０重
量％の割合で添加するのが好適である。Further, it is suitable that the additive for compaction-7 concrete according to the present invention is added in a proportion of 0.05% to 3.0% by weight based on the cement.
その添加割合は、セメントの種類によって大きく変士）
るが、鉾通ポルトランドセメントでは、セメント量に対
して、０．１重量％〜１．０重猜％の範囲が、好適であ
る。The addition ratio varies greatly depending on the type of cement)
However, for Hokotsu Portland cement, a range of 0.1% by weight to 1.0% by weight based on the amount of cement is suitable.
本発明の添加剤は、粉体として前もってセメントと混合
して用いることもできるし、水溶性なので、混練水中に
溶解させて、使用４−ることもできる。The additive of the present invention can be used as a powder by being mixed with cement in advance, or since it is water-soluble, it can also be used by dissolving it in kneading water.
本発明の転圧−」ンクリート用添加剤は、転圧：】ンク
リートの施［での、温度ひび割れ防止特性に１ぐれ、１
Ｌつ、水和発熱の抑制効果等も有するものである。The rolling compaction concrete additive of the present invention improves temperature cracking prevention properties by 1 degree and 1% during rolling compaction process.
Second, it also has the effect of suppressing hydration heat generation.
次に、本発明の転圧コンクリート用添加剤を具体的に実
施例により説明するが、本発明はそれらによって限定さ
れるものではない。Next, the additive for compacted concrete of the present invention will be specifically explained with reference to Examples, but the present invention is not limited thereto.
［害〕１例コ
許通ポルトランドセメントを２９７ ｋｇ／ｍ’用いて
、水対セメントの割合を、３６．４重置％にし、ｓ ／
ａ （細骨材率：即ち、砂と粗骨材の全容積中の砂の
容積の割合）４１．５％になるように、水１０８ ｋｇ
／ｍ”、細骨材８７５ｋｇ／ｍ”、粗骨材１２２３ ｋ
ｇ／ｍ”を混合し、に、（−コンクリート１ｌＩＩｓ中
のセメントペースト容積／コンクリートＩｍｍに用いる
骨材の空隙容積）：１．１Ｏ１Ｋ、（−コンクリート１
■１中のセメントペースト容積／′：コンクリート１ｍ
”に用いる粗骨材の空隙容積）：１．７５になるように
配合し、第１表に示４′コンクリート添加剤を加え、コ
ンクリートを混練した。得られたコンクリートを、２０
℃の気温で打ち込み、得られたコンクリートについて、
振動台式：１ンシステンシー試験（ＶＣ′？Ｘ、験）に
よる締め固め充填率（ＶＣ充填率）を測定し、その経時
変化と強度性状を測定した結果を第２表に示ｔ、 この
ＶＣ充填率は、詰まり易さの指標であり、変化の少ない
方が望ましいものである。[Harm] Example 1 Using 297 kg/m' of Portland cement, the ratio of water to cement was set to 36.4%, and s/m was used.
a (Fine aggregate ratio: i.e., the ratio of the volume of sand to the total volume of sand and coarse aggregate) 41.5%, 108 kg of water
/m”, fine aggregate 875 kg/m”, coarse aggregate 1223 k
g/m” mixed, (-volume of cement paste in 1lIIs of concrete/void volume of aggregate used in concrete Imm): 1.1O1K, (-1l of concrete
■Cement paste volume in 1/': concrete 1m
The 4' concrete additive shown in Table 1 was added, and the concrete was mixed.
Concerning the concrete obtained by pouring at a temperature of ℃,
The compaction filling rate (VC filling rate) was measured by shaking table type: 1 consistency test (VC'? is an index of the ease of clogging, and the smaller the change, the better.
以りの第１表、第２表に示される結果から、本発明の転
圧コンクリート用添加剤は、添加により充填率の経時変
化も少なく、コンクリート強度も、７日以降は、比較例
に比べて優れていることが判明した。From the results shown in Tables 1 and 2 below, the addition of the additive for compacted concrete of the present invention causes little change in the filling rate over time, and the concrete strength also increases after 7 days compared to the comparative example. It turned out to be excellent.
［発明の効果］
以上説明したように、本発明の転圧コンクリド用添加剤
により、次のような顕著な技術的効果が得られた。[Effects of the Invention] As explained above, the following remarkable technical effects were obtained by the additive for compacted concrete of the present invention.
第１に、本発明の添加剤の添加により、打ら込み７Ｊン
クリートの充填率の経時変化も少なく、その強度も優れ
たものが得られる。First, by adding the additive of the present invention, it is possible to obtain a cast 7J concrete with little change in filling rate over time and excellent strength.
第２に、本発明の転圧コンクリート用添加剤は、温度ひ
び割れを防止し、［Ｌつ、水和発熱の抑制効果を有する
ものが提供された。Secondly, the additive for compacted concrete of the present invention has the effect of preventing temperature cracking and suppressing hydration heat generation.
第３に、この結果、転圧）ｌンクリート打ち込みで得ら
れたコンクリート強度が改良されたものが得られた。Thirdly, as a result, the strength of the concrete obtained by compaction concrete pouring was improved.
第４に、更に、水和発熱抑制効果を有ｒると同時に、転
圧コンクリート舗装の暑中打設における充填率の輸送に
よる低下を防止でき、ひいては、強度低下を起こすこと
が問題となっている転圧コンクリートへ適用できる添加
剤を提供できる。Fourthly, it has the effect of suppressing hydration heat generation, and at the same time, it can prevent a decrease in the filling rate due to transportation during hot pouring of compacted concrete pavement, which has become a problem, resulting in a decrease in strength. We can provide additives that can be applied to compacted concrete.
第１図は、本発明の転圧コンクリート用添加剤に使用す
るタンニン化合物の代表的例の構造式を示す。FIG. 1 shows the structural formula of a typical example of a tannin compound used in the additive for compacted concrete of the present invention.
Claims (1)
する転圧コンクリート用添加剤。２、請求項第１に記載
の転圧コンクリート用添加剤において、前記加水分解性
タンニン化合物を、１〜９９重量％、界面活性剤を、９
９〜１重量％の割合で含有することを特徴とする前記転
圧コンクリート用添加剤。1. An additive for compacted concrete characterized by containing a hydrolyzable tannin compound. 2. The additive for compacted concrete according to claim 1, in which the hydrolyzable tannin compound is contained in an amount of 1 to 99% by weight, and the surfactant is contained in an amount of 9% by weight.
The above-mentioned additive for compacted concrete, characterized in that the additive is contained in a proportion of 9 to 1% by weight.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1278365A JP2571627B2 (en) | 1989-10-27 | 1989-10-27 | Additives for compacted concrete |
| CA 2026868 CA2026868C (en) | 1989-10-27 | 1990-10-03 | Additive for compacted concrete pavement |
| AU63835/90A AU635567B2 (en) | 1989-10-27 | 1990-10-04 | Additives for roller compacted concrete pavement |
| FR9013177A FR2653794B1 (en) | 1989-10-27 | 1990-10-24 | CONCRETE ADDITIVE FOR FLUSHING COMPACTED BY CYLINDRING. |
| DE19904033823 DE4033823A1 (en) | 1989-10-27 | 1990-10-24 | Additive mixt. for concrete layer - compacted by roller contg. hydrolysable tannin cpd. |
| ES9002717A ES2027114A6 (en) | 1989-10-27 | 1990-10-26 | Additive for rolled concrete |
| US07/795,761 US5173117A (en) | 1989-10-27 | 1991-11-21 | Additives for roller compacted concrete pavement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1278365A JP2571627B2 (en) | 1989-10-27 | 1989-10-27 | Additives for compacted concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03141141A true JPH03141141A (en) | 1991-06-17 |
| JP2571627B2 JP2571627B2 (en) | 1997-01-16 |
Family
ID=17596328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1278365A Expired - Fee Related JP2571627B2 (en) | 1989-10-27 | 1989-10-27 | Additives for compacted concrete |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JP2571627B2 (en) |
| AU (1) | AU635567B2 (en) |
| CA (1) | CA2026868C (en) |
| DE (1) | DE4033823A1 (en) |
| ES (1) | ES2027114A6 (en) |
| FR (1) | FR2653794B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012148933A (en) * | 2011-01-20 | 2012-08-09 | Sumitomo Osaka Cement Co Ltd | Cement composition |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2925484A1 (en) * | 2007-12-21 | 2009-06-26 | Lafarge Sa | Use of at least one 3,4,5-trihydroxy-benzoic acid methyl ester compounds as an additive for hydraulic binder, mortar or concrete, where the hydraulic binder is useful e.g. for the fabrication of elements or materials in construction |
| WO2019151957A1 (en) * | 2018-01-30 | 2019-08-08 | Scg Cement-Building Materials Co., Ltd. | A formula of powder materials for machines used in forming construction, structural, and the powder materials thereof |
| WO2022174381A1 (en) * | 2021-02-19 | 2022-08-25 | 安徽金禾实业股份有限公司 | Production apparatus and production method for sucrose-6-ester |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2115751A5 (en) * | 1970-11-26 | 1972-07-07 | Progil | Retardation of cement setting times - by addition of polyphenols |
| US4391645A (en) * | 1982-04-12 | 1983-07-05 | Diamond Shamrock Corporation | Additives for cementitious materials |
| JP2647831B2 (en) * | 1986-07-09 | 1997-08-27 | 花王株式会社 | Bituminous emulsion |
-
1989
- 1989-10-27 JP JP1278365A patent/JP2571627B2/en not_active Expired - Fee Related
-
1990
- 1990-10-03 CA CA 2026868 patent/CA2026868C/en not_active Expired - Fee Related
- 1990-10-04 AU AU63835/90A patent/AU635567B2/en not_active Ceased
- 1990-10-24 DE DE19904033823 patent/DE4033823A1/en not_active Withdrawn
- 1990-10-24 FR FR9013177A patent/FR2653794B1/en not_active Expired - Fee Related
- 1990-10-26 ES ES9002717A patent/ES2027114A6/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012148933A (en) * | 2011-01-20 | 2012-08-09 | Sumitomo Osaka Cement Co Ltd | Cement composition |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4033823A1 (en) | 1991-05-02 |
| FR2653794B1 (en) | 1996-02-23 |
| FR2653794A1 (en) | 1991-05-03 |
| CA2026868A1 (en) | 1991-04-28 |
| ES2027114A6 (en) | 1992-05-16 |
| AU635567B2 (en) | 1993-03-25 |
| AU6383590A (en) | 1991-05-02 |
| CA2026868C (en) | 1996-04-30 |
| JP2571627B2 (en) | 1997-01-16 |
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