JPS6339537B2 - - Google Patents
Info
- Publication number
- JPS6339537B2 JPS6339537B2 JP13478179A JP13478179A JPS6339537B2 JP S6339537 B2 JPS6339537 B2 JP S6339537B2 JP 13478179 A JP13478179 A JP 13478179A JP 13478179 A JP13478179 A JP 13478179A JP S6339537 B2 JPS6339537 B2 JP S6339537B2
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- admixture
- agents
- properties
- bacteria
- 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.)
- Expired
Links
- 230000006866 deterioration Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- HUHGPYXAVBJSJV-UHFFFAOYSA-N 2-[3,5-bis(2-hydroxyethyl)-1,3,5-triazinan-1-yl]ethanol Chemical compound OCCN1CN(CCO)CN(CCO)C1 HUHGPYXAVBJSJV-UHFFFAOYSA-N 0.000 claims description 2
- 241000894006 Bacteria Species 0.000 description 10
- 239000003795 chemical substances by application Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 239000004094 surface-active agent Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 6
- -1 polyoxyethylene Polymers 0.000 description 6
- 239000000654 additive Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000010790 dilution Methods 0.000 description 3
- 239000012895 dilution Substances 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 125000005037 alkyl phenyl group Chemical group 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002609 medium Substances 0.000 description 2
- 239000003755 preservative agent Substances 0.000 description 2
- 230000002335 preservative effect Effects 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- DTCCVIYSGXONHU-CJHDCQNGSA-N (z)-2-(2-phenylethenyl)but-2-enedioic acid Chemical compound OC(=O)\C=C(C(O)=O)\C=CC1=CC=CC=C1 DTCCVIYSGXONHU-CJHDCQNGSA-N 0.000 description 1
- BTXXTMOWISPQSJ-UHFFFAOYSA-N 4,4,4-trifluorobutan-2-one Chemical compound CC(=O)CC(F)(F)F BTXXTMOWISPQSJ-UHFFFAOYSA-N 0.000 description 1
- BQACOLQNOUYJCE-FYZZASKESA-N Abietic acid Natural products CC(C)C1=CC2=CC[C@]3(C)[C@](C)(CCC[C@@]3(C)C(=O)O)[C@H]2CC1 BQACOLQNOUYJCE-FYZZASKESA-N 0.000 description 1
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- 229920001817 Agar Polymers 0.000 description 1
- 239000004604 Blowing Agent Substances 0.000 description 1
- 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 description 1
- 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 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 108010009736 Protein Hydrolysates Proteins 0.000 description 1
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000008272 agar Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 239000001963 growth medium Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000000077 insect repellent Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 1
- 229910052939 potassium sulfate Inorganic materials 0.000 description 1
- 235000011151 potassium sulphates Nutrition 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 239000003531 protein hydrolysate Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- 229930182490 saponin Natural products 0.000 description 1
- 150000007949 saponins Chemical class 0.000 description 1
- 235000017709 saponins Nutrition 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000012748 slip agent Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 235000019795 sodium metasilicate Nutrition 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000000271 synthetic detergent Substances 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Description
【発明の詳細な説明】
本発明は、長期間安定で、何ら混和剤の特性を
損なうことなく、その腐敗を防止するコンクリー
ト混和剤の変質防止法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for preventing deterioration of concrete admixtures, which is stable for a long period of time and prevents decomposition without impairing the properties of the admixtures.
ここに、コンクリート混和剤とは、コンクリー
トの成分と混和することによつて、混和しないコ
ンクリートでは得られない特性、たとえば、耐水
性（防水性）、接着性、機械的強度、耐薬品性、
耐候性を付与するために用いる材料である。さら
に詳しくは、空気連行剤（AE剤、Air
Entraining Agent）、分散剤、防水剤、硬化促進
剤、凝結遅延剤、防食剤、着色剤、発泡剤、膨
張・収縮低減剤、防滑剤、防虫剤、防錆剤などを
総称して混和剤と呼んでいる。 Here, concrete admixtures are mixed with concrete components to provide properties that cannot be obtained with unmixed concrete, such as water resistance, adhesiveness, mechanical strength, chemical resistance, etc.
A material used to provide weather resistance. For more information, see Air entraining agents (AE agents, Air
Entraining agents), dispersants, waterproofing agents, hardening accelerators, set retarders, anticorrosive agents, colorants, blowing agents, expansion/shrinkage reducing agents, anti-slip agents, insect repellents, rust preventives, etc. are collectively called admixtures. I'm calling.
近年、コンクリート工事の際の作業性を向上さ
せて能率化をはかると同時に、前述したような特
性をコンクリートに与える混和剤が広汎に使用さ
れている。その中で空気連行剤（AE剤）、特に起
泡剤として使用されるものは主としてその界面活
性作用により物理的に気泡を導入させる効果を有
する物質、たとえば、樹脂石けん類、サポニン、
蛋白質加水分解物、その他いわゆる合成洗剤を主
体とした合成界面活性剤類が知られており、最近
の高分子系起泡剤（界面活性剤）としては、アビ
エチン酸に無水マレイン酸を付加したマレイン化
樹脂けん化物を主成分としているものもあり、泡
の安定性、すなわち起泡効果が良く、コンクリー
ト、またはモルタルの作業性を向上させ、施工後
のコンクリートの耐久性を向上させる効果をも有
するものである。しかしながら、空気連行剤を用
いた硬化コンクリートは物理的性質が若干変化
し、圧縮強度を低下させる欠点があるとされてい
る。 In recent years, admixtures have been widely used to improve workability and efficiency during concrete construction, and at the same time to impart the above-mentioned properties to concrete. Among them, air entraining agents (AE agents), especially those used as foaming agents, are substances that have the effect of physically introducing air bubbles through their surfactant action, such as resin soaps, saponins,
Synthetic surfactants based on protein hydrolysates and other so-called synthetic detergents are known, and recent polymeric foaming agents (surfactants) include maleic acid, which is made by adding maleic anhydride to abietic acid. Some products are mainly composed of saponified resins, which have good foam stability, that is, a foaming effect, and have the effect of improving the workability of concrete or mortar and improving the durability of concrete after construction. It is something. However, it is said that hardened concrete using air-entraining agents has the disadvantage that the physical properties change slightly and the compressive strength decreases.
また、分散剤（減水剤）とは、湿潤、浸透作用
により材料の分散をよくし、作業性をよくすると
同時にセメントの水和作用を助長し減水効果をも
たらす混和剤であつて、減水効果により強度を増
進させる。AE効果を同時に有する場合も多い。
しかも、一般には、分散剤と減水剤の間の明確な
区別はなく、多くの場合、両者混同して用いられ
ている。たとえば、ポリオキシエチレンアルキル
フエノールエーテルなどの非イオン界面活性剤は
発泡性が少ないので、余り圧縮強度に影響は及ぼ
さないものである。 In addition, a dispersant (water reducer) is an admixture that improves the dispersion of materials through wetting and penetration effects, improves workability, and at the same time promotes the hydration of cement and brings about a water reduction effect. Increase strength. It often has an AE effect at the same time.
Moreover, there is generally no clear distinction between dispersants and water reducers, and in many cases, the two are used interchangeably. For example, nonionic surfactants such as polyoxyethylene alkyl phenol ether have low foaming properties, so they do not significantly affect compressive strength.
防水、硬化促進剤としては、珪酸ナトリウム、
メタ珪酸ナトリウムなどの珪酸塩、硫酸ナトリウ
ム、硫酸カリウムなどの硫酸塩があり、これを添
加することにより、セメント中の水酸化石灰を捕
えて不溶性の珪酸石灰または硫酸石灰として実質
を緻密にし、生成する不溶性物質をセメントの空
隙間に充填せしめることによつて硬度を強化し、
また、防水作用をも有するものである。上記生成
物は、液状界面活性剤には不溶のため、液状界面
活性剤と併用することは出来なかつたが、最近で
は、前記のナトリウムまたはカリウム塩と尿素と
を併用することによつて、ナトリウム塩、または
カリウム塩は液状界面活性剤に易溶性となり、従
来の混和剤としての界面活性剤の特性を生かし、
さらにその欠点とされてきた硬度の強化促進、防
水作用を有する低温でも長期間安定な液状コンク
リート混和剤も得られている。 As waterproofing and hardening accelerators, sodium silicate,
There are silicates such as sodium metasilicate, and sulfates such as sodium sulfate and potassium sulfate. By adding these, the lime hydroxide in the cement is captured and the substance is densified and formed as insoluble lime silicate or lime sulfate. By filling the voids of cement with an insoluble substance, the hardness is strengthened.
It also has a waterproof effect. The above product cannot be used in combination with a liquid surfactant because it is insoluble in the liquid surfactant, but recently, by using the above sodium or potassium salt in combination with urea, sodium Salts or potassium salts are easily soluble in liquid surfactants, making use of the properties of surfactants as conventional admixtures.
Furthermore, a liquid concrete admixture has been obtained that is stable for a long period of time even at low temperatures and has the ability to strengthen hardness and waterproof, which has been considered a drawback.
ところが、このコンクリート混和剤もその中に
各種界面活性剤などの有機物材料が多く含まれて
いるため、特に夏場において高温時に貯蔵中、次
第に黒味を帯びて腐敗変質し、混和剤の特性を損
なう現象が生じている。 However, since this concrete admixture contains a large amount of organic materials such as various surfactants, during storage at high temperatures, especially in the summer, it gradually turns black and rots, impairing the properties of the admixture. A phenomenon is occurring.
そこで本発明者らは、かかる変質を防止する方
法につき、鋭意研究した結果、次の様な新事実を
見い出し、本発明を完成した。すなわち、本発明
は、ヘキサヒドロ−１，３，５−トリス（２−ヒ
ドロキシエチル）−ｓ−トリアジンを添加するこ
とを特徴とするコンクリート混和剤の変質防止法
に関する。この化合物を混和剤中に添加すること
により、その安定性を維持し、性状に何ら変化も
もたらさず、実用上、他の効力に対する影響もな
く混和剤の腐敗を長期間にわたつて防止すること
を見い出した。化合物の添加濃度は、0.05％以
上、望ましくは0.1％以上である。 Therefore, the present inventors conducted intensive research on methods for preventing such deterioration, and as a result, discovered the following new facts and completed the present invention. That is, the present invention relates to a method for preventing deterioration of a concrete admixture, which is characterized by adding hexahydro-1,3,5-tris(2-hydroxyethyl)-s-triazine. By adding this compound to an admixture, it maintains its stability and prevents the admixture from spoiling over a long period of time without causing any change in properties or practically affecting other efficacy. I found out. The concentration of the compound added is 0.05% or more, preferably 0.1% or more.
以下に、その実施例をあげて本発明を説明す
る。 The present invention will be explained below by giving examples thereof.
実施例
コンクリート混和剤の一例として次の成分のも
のを用いた。Example The following ingredients were used as an example of a concrete admixture.
コンクリート混和剤の成分： ポリオキシエチレ
ンアルキルフエニルエーテル、
ポリオキシエチレンアルキルフエニルエーテル
硫酸塩、
ナトリウム・メチレン・ジナフタレン・ジスル
ホネート、
スチレン・マレイン酸樹脂、
アンモニア、
ｎ−プロパノール、
水酸化ナトリウム、
硫酸ナトリウム
上記コンクリート混和剤を100倍に水で希釈し
たものにヘキサヒドロ−１，３，５−トリス（２
−ヒドロキシエチル）−ｓ−トリアジンを0.05％、
0.1％、0.5％、1.0％量、それぞれ別々に添加し、
35℃にて静置保存する。約１ケ月にわたり、経日
的にサンプリングし、その中の菌数および腐敗状
況をみて本防腐剤の効果を検討する。Concrete admixture ingredients: polyoxyethylene alkyl phenyl ether, polyoxyethylene alkyl phenyl ether sulfate, sodium methylene dinaphthalene disulfonate, styrene maleic acid resin, ammonia, n-propanol, sodium hydroxide, Sodium sulfate Hexahydro-1,3,5-tris (2
-hydroxyethyl)-s-triazine 0.05%,
Add 0.1%, 0.5%, and 1.0% amounts separately,
Store at 35℃. Samples will be taken daily over a period of about one month, and the effectiveness of this preservative will be examined by checking the number of bacteria and the state of decomposition.
菌数測定試験例
Γ滅菌ピペツト
Γ滅菌シヤーレ
Γ滅菌希釈水（蒸留水）
Γ培養基：ブドウ糖ブイヨン寒天培地（PH７）…
オートクレーブ滅菌を施したもの。Bacteria count measurement test example Γ Sterile pipette Γ Sterile shear Γ Sterile dilution water (distilled water) Γ Culture medium: Glucose bouillon agar medium (PH7)...
Sterilized by autoclave.
以上のものを準備しておき、サンプル液を上記
ピペツトと希釈水にて適宜希釈する。希釈した液
の１mlをシヤーレにとつて40℃位に冷やした培地
を加え、良く撹拌して固化させる。37℃にて２日
間培養した後、シヤーレに発生したコロニーを数
え、それに希釈倍数をかけて生菌数とする。 Prepare the above items and dilute the sample solution appropriately with the pipette and dilution water. Pour 1 ml of the diluted solution into a petri dish, add the medium cooled to around 40°C, and stir well to solidify. After culturing at 37°C for 2 days, count the colonies that have developed on the shears and multiply by the dilution factor to obtain the number of viable bacteria.
本発明の試験結果を第１図にまとめた。 The test results of the present invention are summarized in FIG.
この第１図からわかるように、本発明の化合物
無添加物が日数の経過とともに相当数の菌が増殖
するのに対し、添加物は0.05％添加でかなり生菌
の増殖を抑え、0.1％以上ではいずれも完全に菌
は死滅し、日数がたつても生菌は検出されなかつ
た。また、外観上も無添加物は次第に黒ずんで変
質、腐敗の現象を呈したが（腐敗臭あり）、本発
明化合物0.1％以上添加物においては試験開始時
と何ら変化はなく（腐敗臭もなし）、完全に変質
が阻止された。 As can be seen from Fig. 1, a considerable number of bacteria proliferate with the addition of the compound of the present invention as time passes, whereas with the addition of 0.05% of the additive, the growth of viable bacteria is considerably suppressed, and the growth of viable bacteria is suppressed to 0.1% or more. In all cases, the bacteria were completely killed, and no viable bacteria were detected even after several days had passed. In addition, in terms of appearance, the additive-free product gradually turned black and exhibited deterioration and putrefaction (there was a putrid odor), but the additives containing 0.1% or more of the compound of the present invention showed no change from the start of the test (no putrid odor). ), the alteration was completely prevented.
このように、本発明に用いられる化合物を添加
したコンクリート混和剤で処理したコンクリート
は、混和剤自体が防腐処理されているため、外
観、臭いなどに何の問題もなく、十分使用するこ
とができたが、夏期高温時に貯蔵後の無処理コン
クリート混和剤を使用した場合、(1)カビや酵母や
細菌等の微生物が混和剤中に発生し、特にタンク
の縁や表面に発生してフロツク状になり細い配管
をつまらせることがある、(2)混和剤の変質によつ
てコンクリートに一定量の混和剤を混ぜる時、計
量のゲージが不正確になる、(3)腐つた場合、腐敗
臭がひどく色も黒ずんで混和剤としての商品価値
を著しく損なう、などの欠点があり、コンクリー
ト工事の使用には著しく耐えられなかつた。 In this way, concrete treated with a concrete admixture containing the compound used in the present invention can be used satisfactorily without any problems with appearance or odor because the admixture itself is preservative-treated. However, if an untreated concrete admixture is used after storage during high temperatures in the summer, (1) microorganisms such as mold, yeast, and bacteria will form in the admixture, especially on the edges and surfaces of the tank, causing a floc-like appearance. (2) Due to deterioration of the admixture, the measuring gauge becomes inaccurate when a certain amount of admixture is mixed with concrete. (3) If it rots, it may cause a rotten odor. It had drawbacks such as severe color and darkening, which significantly impaired its commercial value as an admixture, making it extremely difficult to withstand use in concrete construction.
第１図は、本発明方法により達せられる効果を
示したグラフである。横軸は経過日数（週）であ
り、縦軸は生菌数（個／ml）である。図中、○―
―○は本発明の化合物0.1％、0.5％、1.0％の添加
物、●――●は0.05％の添加物、また、×――×は無
添加物を示す。
FIG. 1 is a graph showing the effect achieved by the method of the invention. The horizontal axis is the number of elapsed days (weeks), and the vertical axis is the number of viable bacteria (cells/ml). In the diagram, ○―
--○ indicates additives of 0.1%, 0.5%, and 1.0% of the compound of the present invention, ●---● indicates additives of 0.05%, and ×---× indicates no additives.
Claims (1)
ドロキシエチル）−ｓ−トリアジンを添加するこ
とを特徴とするコンクリート混和剤の変質防止
法。1. A method for preventing deterioration of a concrete admixture, which comprises adding hexahydro-1,3,5-tris(2-hydroxyethyl)-s-triazine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13478179A JPS5659661A (en) | 1979-10-18 | 1979-10-18 | Concrete admixing agent denaturization prevention |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13478179A JPS5659661A (en) | 1979-10-18 | 1979-10-18 | Concrete admixing agent denaturization prevention |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5659661A JPS5659661A (en) | 1981-05-23 |
| JPS6339537B2 true JPS6339537B2 (en) | 1988-08-05 |
Family
ID=15136397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13478179A Granted JPS5659661A (en) | 1979-10-18 | 1979-10-18 | Concrete admixing agent denaturization prevention |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5659661A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01301214A (en) * | 1988-05-31 | 1989-12-05 | Mitsubishi Gas Chem Co Inc | Manufacture of copper-plated panel |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2576591B1 (en) * | 1985-01-29 | 1992-04-17 | Schlumberger Cie Dowell | CEMENT COMPOSITIONS FOR WELL CEMENTING FOR FIGHTING AGAINST PRESSURE GAS PATHWAY IN THE CEMENT-BASED DIRECTORY BY "RIGHT-ANGLE" TAP |
| JPH01188449A (en) * | 1988-01-20 | 1989-07-27 | Nisso Masutaabirudaazu Kk | Admixture for ultrastiff concrete |
| JP6343747B2 (en) * | 2016-10-03 | 2018-06-20 | 株式会社片山化学工業研究所 | Anti-caking method of granulated blast furnace slag and aqueous solution of anti-caking agent used therefor |
-
1979
- 1979-10-18 JP JP13478179A patent/JPS5659661A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01301214A (en) * | 1988-05-31 | 1989-12-05 | Mitsubishi Gas Chem Co Inc | Manufacture of copper-plated panel |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5659661A (en) | 1981-05-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105347726B (en) | A kind of anti-corrosion high-thin arch dam polycarboxylate composite water reducing agent and preparation method and application | |
| US4961790A (en) | Concrete admixture device and method of using same | |
| Yang et al. | Properties of concrete with a new type of saponin air-entraining agent | |
| US4488910A (en) | Admixture for nonplastic cement mixes and method | |
| CN105461349B (en) | A kind of resistance for steel fiber reinforced concrete top layer is become rusty hardening agent and preparation method thereof | |
| CN103304181B (en) | Early strength polycarboxylic acid high performance dehydragent | |
| CN104529232B (en) | Polycarboxylate composite water reducing agent, preparation method and using method thereof for high carbon content concrete | |
| US4737193A (en) | Chemical additive for hydraulic cement mixes | |
| CN109665742A (en) | A kind of viscosity reduction type concrete admixture and preparation method thereof based on marble mountain flour | |
| JP2023515414A (en) | Improved concrete composition and method of making same | |
| JPS62180741A (en) | Dispersion of silica fumes in water | |
| JPS6339537B2 (en) | ||
| CN104478285B (en) | A kind of it is applied to the activation reinforcing agent of cement concrete, purposes and preparation method thereof | |
| EP0024854A1 (en) | Hydraulic cements and method of their production | |
| JP2004123437A (en) | Material and method of repairing concrete crack | |
| US4689083A (en) | Chemical additive for hydraulic cement mixes | |
| CN107285662B (en) | A kind of collapse protection type concrete pump-feed agent | |
| CN106007468B (en) | A kind of concrete composite strengthening water reducer and preparation method thereof | |
| CN110240433B (en) | Composite cement additive, composite cement-based material and preparation method thereof | |
| SU1733422A1 (en) | Complex additive for concrete mixture | |
| RU2187480C1 (en) | Integrated additive for concretes and cement mortars | |
| US20160221884A1 (en) | Concrete formulations and admixtures therefor | |
| US2236251A (en) | Cement mix | |
| CN112521048B (en) | Formaldehyde-free anti-corrosion and sterilization composition for polycarboxylic acid water reducing agent and preparation method thereof | |
| Zhang et al. | On the Principle and Application of Concrete Admixtures |