JPS6021840A - Cement composition - Google Patents
Cement compositionInfo
- Publication number
- JPS6021840A JPS6021840A JP12557783A JP12557783A JPS6021840A JP S6021840 A JPS6021840 A JP S6021840A JP 12557783 A JP12557783 A JP 12557783A JP 12557783 A JP12557783 A JP 12557783A JP S6021840 A JPS6021840 A JP S6021840A
- Authority
- JP
- Japan
- Prior art keywords
- cement
- early
- weight
- thiocyanate
- effect
- 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
- 239000004568 cement Substances 0.000 title claims description 25
- 239000000203 mixture Substances 0.000 title claims description 24
- ZMZDMBWJUHKJPS-UHFFFAOYSA-M Thiocyanate anion Chemical compound [S-]C#N ZMZDMBWJUHKJPS-UHFFFAOYSA-M 0.000 claims description 10
- ZMZDMBWJUHKJPS-UHFFFAOYSA-N hydrogen thiocyanate Natural products SC#N ZMZDMBWJUHKJPS-UHFFFAOYSA-N 0.000 claims description 10
- DHCDFWKWKRSZHF-UHFFFAOYSA-N sulfurothioic S-acid Chemical compound OS(O)(=O)=S DHCDFWKWKRSZHF-UHFFFAOYSA-N 0.000 claims 1
- 230000000694 effects Effects 0.000 description 19
- 239000003795 chemical substances by application Substances 0.000 description 12
- 238000005728 strengthening Methods 0.000 description 12
- 239000004570 mortar (masonry) Substances 0.000 description 9
- DHCDFWKWKRSZHF-UHFFFAOYSA-L thiosulfate(2-) Chemical compound [O-]S([S-])(=O)=O DHCDFWKWKRSZHF-UHFFFAOYSA-L 0.000 description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 6
- 239000000047 product Substances 0.000 description 5
- VGTPCRGMBIAPIM-UHFFFAOYSA-M sodium thiocyanate Chemical compound [Na+].[S-]C#N VGTPCRGMBIAPIM-UHFFFAOYSA-M 0.000 description 5
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 5
- 235000019345 sodium thiosulphate Nutrition 0.000 description 5
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 4
- 239000001110 calcium chloride Substances 0.000 description 4
- 229910001628 calcium chloride Inorganic materials 0.000 description 4
- 230000007774 longterm Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000004898 kneading Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 150000004764 thiosulfuric acid derivatives Chemical class 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- -1 amine salts Chemical class 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明はチオシアン酸塩とチオ硫酸塩よりなる混和剤組
成物を含有することを特徴とするセメント組成物に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cement composition characterized by containing an admixture composition comprising a thiocyanate and a thiosulfate.
セメントペースト、モルタル、コンク’Ｊ −１−、グ
ラウト等のセメント組成物の初期強度を増進する作用を
もった混和剤である早強剤は工事の工期短縮等の目的で
広く使用されている。従来、代表的な早強剤として塩化
カルシウムが使用されているが、塩化力ルンクムは、セ
メント組成物中の鉄筋等を腐食させるという欠点がある
のでその使用を避けるかあるいは制限しなければならず
、このためかかる塩化物を含まない早強剤として所謂ノ
ンクロライド型の早強剤の提供が要望されている。しか
しながら、現状においては、種々の性質を満足するもの
は提供されていない。Early strengthening agents, which are admixtures that have the effect of increasing the initial strength of cement compositions such as cement paste, mortar, Conc'J-1-, and grout, are widely used for the purpose of shortening the construction period. Calcium chloride has traditionally been used as a typical early strengthening agent, but its use must be avoided or limited because it has the disadvantage of corroding reinforcing bars in cement compositions. Therefore, it is desired to provide a so-called non-chloride type early strengthening agent which does not contain chloride. However, at present, nothing that satisfies various properties has been provided.
本発明者らは、さきにチオシアン酸塩がノンクロライド
型早強剤として利用できることを見出しだが、このもの
はセメント組成物中のセメント基準の添加重量係（使用
量という）として約０．５％位までは使用量と共に早強
効果（初期強度が増進される効果）は大きくなるが、使
用量がこれより大きくなっても早強効果があま′り大き
くならない頭打ち現象があって、結果として達成できる
早強効果に限界がある。（第１図Ａ参照）
また、チオ硫酸塩はノンクロライド型早強剤として知ら
れたものであるが、このものは第１図Ｂに示されている
ようにある使用Ｖなると早強効果が顕著となってくるも
のの結局その大きさはチオシアン酸塩と同程度であって
塩化カルシウムの早強効果よシかなり小さい。加うるに
、チオ硫酸塩はプレン配合のセメント組成物に比しで長
期強度が小さくなるという大きな欠点があるので使用量
に限界が生ずる。The present inventors previously discovered that thiocyanate can be used as a non-chloride type early strengthening agent, and this amount accounts for approximately 0.5% of the added weight (referred to as usage amount) based on cement in a cement composition. Up to this level, the early strength effect (the effect of increasing initial strength) increases with the amount used, but even if the amount used is greater than this, there is a plateauing phenomenon in which the early strength effect does not increase much, and as a result, it is not achieved. There are limits to the early strength effects that can be achieved. (See Figure 1A) In addition, thiosulfate is known as a non-chloride type early-strengthening agent, but as shown in Figure 1B, this product loses its early-strengthening effect when used at a certain level. Although it becomes noticeable, its magnitude is ultimately on the same level as that of thiocyanate, and is much smaller than the early-strengthening effect of calcium chloride. In addition, thiosulfates have a major disadvantage in that they have lower long-term strength than cement compositions containing prene, which limits the amount they can be used.
本発明者らは、チオシアン酸塩とチオ薮酸塩とを早強剤
として併用すると第１図Ｃに示されているように、早強
効果が相乗的に著しく増大すると共にチオシアン酸塩に
認められたような頭打ち現象が認められず、塩化カルシ
ウムに匹敵する大きな早強効果が得られ、さらにチオ硫
酸塩に認められたような長期強度低下の欠点も認められ
ないことを見出した。本発明はかがる知見に基づくもの
であり、当業界の要望に応えることのできるノンクロラ
イド型早強剤を含有するセメント組成物を提供するもの
である。The present inventors have found that when thiocyanate and thiobacterate are used in combination as early-strengthening agents, the early-strengthening effect increases synergistically and significantly, as shown in Figure 1C. It was found that no plateauing phenomenon was observed, a great early strength effect comparable to that of calcium chloride was obtained, and there was also no long-term strength decline as observed with thiosulfates. The present invention is based on this knowledge and provides a cement composition containing a non-chloride type early strengthening agent that can meet the needs of the industry.
本発明は、チオシアン酸塩８０〜２０重量部とチオ硫酸
塩２０〜８０重量部よりなる混和剤組成物をセメント重
量基準で０．０５〜２０５〜２０重量％含有することを
特徴とするセメント組成物を提供するものであるが、以
下に、本発明の詳細な説明する。The present invention provides a cement composition characterized in that it contains an admixture composition consisting of 80 to 20 parts by weight of thiocyanate and 20 to 80 parts by weight of thiosulfate in an amount of 0.05 to 205 to 20% by weight based on the weight of cement. The present invention will now be described in detail.
本発明において使用されるチオシアン酸塩およびチオ硫
酸塩は、水溶性塩であればその種類は特定されないが、
例示するとアンモニウム塩、ナトリウム塩、カリウム塩
、アミン塩等があげられる。これらは、工業薬品等通常
入手できる品質のもののほか、他の工業的製品の副生物
として得られるものや、排ガス、排液等に含まれたもの
もそれぞれの形状に応じて利用することができる。The type of thiocyanate and thiosulfate used in the present invention is not specified as long as they are water-soluble salts, but
Examples include ammonium salts, sodium salts, potassium salts, and amine salts. In addition to normally available quality products such as industrial chemicals, products obtained as by-products of other industrial products, and products contained in exhaust gas, waste liquid, etc. can also be used depending on their shape. .
チオシアン酸塩とチオ硫酸塩の混合重量比率が８０／
〜２°／８ｏの範囲から外れたときは上に０
述べた両者併用により得られる相乗効果は不充分であシ
、両者の混合比率が、′。１５ｏ付近のと７０ 〜３０
／６ｏの
きの相乗効果が最も大きく、 ／４０
範囲が好ましい範囲である。The mixing weight ratio of thiocyanate and thiosulfate is 80/
When it is out of the range of ~2°/8o, the above-mentioned synergistic effect obtained by using the two in combination is insufficient, and the mixing ratio of the two is '. 70-30 near 15o
The synergistic effect of /6o is the greatest, and the /40 range is the preferred range.
また、両者の混合物の使用量がセメント重量基準で０．
０５重量％より小さいときは得られる早強効果は不充分
であり、２０重量％より大きい場合には早強効果はあま
り大きくならないので意味がない。好ましい使用量範囲
は０．１〜１０重量％である。In addition, the amount of the mixture of both is 0.0% based on cement weight.
When it is less than 0.5% by weight, the early strength effect obtained is insufficient, and when it is more than 20% by weight, the early strength effect is not so great that it is meaningless. The preferred usage range is 0.1 to 10% by weight.
本発明において使用されるチオシアン酸塩とチオ硫酸塩
よりなる混和剤組成物の添加効果は次の通９である。The effects of adding the admixture composition consisting of thiocyanate and thiosulfate used in the present invention are as follows.
（イ）両者の併用により早強効果が相乗的に顕著に向上
する。(b) The combination of the two significantly improves the early strength effect synergistically.
（ロ）使用量約２．０重量係に至るまで早強効果は順調
に向上し頭打ちとならない。(b) The early strength effect steadily improves and does not reach a plateau until the amount used reaches approximately 2.0% by weight.
（ハ） プレン配合の場合にくらべ長期強度が低下しな
い。(c) Long-term strength does not decrease compared to the case of plain combination.
このように、塩化カルシウムに匹敵する顕著な早強効果
を有するノンクロライド型の早強剤によシ、当業界の要
望に応え得る本発明のセメント組成物が提供されるに至
った。In this way, the cement composition of the present invention has been provided which can meet the needs of the industry by using a non-chloride type early strengthening agent that has a remarkable early strengthening effect comparable to that of calcium chloride.
上述の如きチオシアン酸塩とチオ硫酸塩よりなる混和剤
組成物をセメント組成物に添加する場合の方法について
は、それは、特定されないが、従来公知の添加方法（混
練時添加、混練後添加、ドライミックス添加、粉末とし
て添加、溶液として添加、分割して添加、等の方法）を
適用することかでき、まだ、他の混和材料（ＡＥ剤、減
水剤、早強剤、膨張剤、増粘剤、防水剤、ポゾラン物質
、高炉水滓粉、等）を併用することができる。The method of adding the above-mentioned admixture composition consisting of thiocyanate and thiosulfate to a cement composition is not specified, but conventionally known addition methods (addition during kneading, addition after kneading, dry Mix addition, addition as powder, addition as solution, addition in portions, etc.) can be applied, and other admixtures (AE agent, water reducer, early strength agent, swelling agent, thickener, etc.) can be applied. , waterproofing agent, pozzolan substance, blast furnace water slag powder, etc.) can be used in combination.
以下に、本発明の実施例を比較例とともに掲げる。Examples of the present invention are listed below along with comparative examples.
実施例 １
チオシアン酸ナトリウムおよびチオ硫酸ナトリウム（い
ずれも試薬１級品）を用い、各単味および両者の等量混
合品を添加したときの早強効果をモルタル試験によって
確認した。Example 1 Using sodium thiocyanate and sodium thiosulfate (both first grade reagents), the early strength effect when adding each single component and a mixture of equal amounts of both was confirmed by a mortar test.
モルタル試験に用いた材料およびモルタルの配合は次の
通り。The materials and mortar composition used in the mortar test are as follows.
セメント：小野田普通セメント
骨材：大井用産川砂、Ｆ、Ｍ、 ＝ ２．７２、比重＝
２．６２吸水率−１，４４％
砂セメント重量比：２．８０
水セメント比：４９チ
混和剤使用量：０．０５％、０１％、０，２５％、０５
％、・°１．０％、２．０チの６点
モルタルフロー値：２００±１０調
試験温度＝２１℃
１日強度について、プレンモルタルとの強度比（１）と
使用量との関係を第１図に示す。図においてＡはチオシ
アン酸ナトリウム単味の場合、Ｂはチオ硫酸ナトリウム
単味の場合を示し、Ｃは両者の等景況金品の場合を示す
。なお、プレンモルタルの１日強度は６２，７ＫＶ／Ｃ
１１Ｌ２であった。Cement: Onoda ordinary cement Aggregate: Oi produced river sand, F, M, = 2.72, specific gravity =
2.62 Water absorption rate - 1.44% Sand cement weight ratio: 2.80 Water cement ratio: 49 Chi Amount of admixture used: 0.05%, 01%, 0.25%, 05
%, · ° 1.0%, 2.0chi 6-point mortar flow value: 200 ± 10 tone test temperature = 21℃ Regarding the 1-day strength, the relationship between the strength ratio (1) with plain mortar and the amount used is Shown in Figure 1. In the figure, A shows the case of sodium thiocyanate alone, B shows the case of sodium thiosulfate alone, and C shows the case of the same condition of both. In addition, the daily strength of pre-mortar is 62.7 KV/C.
It was 11L2.
図よシ明らかな如く、等景況金品添加の場合（本発明の
場合）にはチオシアン酸ナトリウムまたはチオ硫酸ナト
ＩＪウムの各単味添加の場合より早強効果が相乗的に大
きくなっていることが示されている。As is clear from the figure, the early strength effect is synergistically greater in the case of adding sodium thiocyanate or sodium thiosulfate (in the case of the present invention) than in the case of adding either sodium thiocyanate or sodium thiosulfate. It is shown.
実施例 ２
チオシアン酸ナトリウムとチオ硫酸ナトリウムの混合比
を７５／２５．５０ ／ ５ ｏ、２５／７５ （重量
比）の６水準にとシ、使用量を０．５％としたときの本
発明の効果をモルタル試験により示す。Example 2 The present invention when the mixing ratio of sodium thiocyanate and sodium thiosulfate was set to six levels: 75/25.50/5 o, 25/75 (weight ratio), and the amount used was 0.5%. The effect of this is shown by mortar test.
セメントとして小野田普通セメント、アサノ普通セメン
ト、住友普通セメントの６種を等量で混合したものを使
用したほかはモルタルの材料および配合は実施例１の場
合と同一である。The materials and composition of the mortar were the same as in Example 1, except that a mixture of six types of Onoda ordinary cement, Asano ordinary cement, and Sumitomo ordinary cement in equal amounts was used as the cement.
結果を第１表に示す。The results are shown in Table 1.
上表よシ明らかな如く、本発明のセメント組成物におい
ては、早強効果が相乗的に向上すると共に１長期強度の
低下が認められないことがわかる。As is clear from the above table, in the cement composition of the present invention, the early strength effect is synergistically improved and no decrease in long-term strength is observed.
Claims (1)
０重量部よりなる混和剤組成物をセメント重量基準で０
．０５〜２０重量係の割合で含有することを特徴とする
セメント組成物。80-20 parts by weight of thiocyanate and 20-8 parts by weight of thiosulfate
The admixture composition consisting of 0 parts by weight is 0 parts by weight based on the cement weight.
．． 1. A cement composition characterized in that the composition contains 0.05 to 20% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12557783A JPS6021840A (en) | 1983-07-12 | 1983-07-12 | Cement composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12557783A JPS6021840A (en) | 1983-07-12 | 1983-07-12 | Cement composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6021840A true JPS6021840A (en) | 1985-02-04 |
| JPS6210946B2 JPS6210946B2 (en) | 1987-03-09 |
Family
ID=14913621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12557783A Granted JPS6021840A (en) | 1983-07-12 | 1983-07-12 | Cement composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6021840A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6389445A (en) * | 1986-09-19 | 1988-04-20 | サンド アクチェンゲゼルシャフト | Admixtures and methods for accelerating the setting of cold concrete |
| JPS63162561A (en) * | 1986-12-25 | 1988-07-06 | 株式会社吉兆総合商事 | Chlorine-free waterproofing agent for cement |
| JPH02212000A (en) * | 1989-02-14 | 1990-08-23 | Amada Co Ltd | Method and apparatus for lubricating drive part in press |
| JP2000344561A (en) * | 1999-03-29 | 2000-12-12 | Denki Kagaku Kogyo Kk | Cement admixture and cement composition |
| WO2018101140A1 (en) * | 2016-11-29 | 2018-06-07 | 花王株式会社 | Additive for hydraulic-setting composition |
| JP2018087104A (en) * | 2016-11-29 | 2018-06-07 | 花王株式会社 | Additive for hydraulic composition |
| JP2018090476A (en) * | 2016-11-29 | 2018-06-14 | 花王株式会社 | Additives for hydraulic compositions |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63150731U (en) * | 1987-03-20 | 1988-10-04 |
-
1983
- 1983-07-12 JP JP12557783A patent/JPS6021840A/en active Granted
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6389445A (en) * | 1986-09-19 | 1988-04-20 | サンド アクチェンゲゼルシャフト | Admixtures and methods for accelerating the setting of cold concrete |
| JPS63162561A (en) * | 1986-12-25 | 1988-07-06 | 株式会社吉兆総合商事 | Chlorine-free waterproofing agent for cement |
| JPH02212000A (en) * | 1989-02-14 | 1990-08-23 | Amada Co Ltd | Method and apparatus for lubricating drive part in press |
| JP2000344561A (en) * | 1999-03-29 | 2000-12-12 | Denki Kagaku Kogyo Kk | Cement admixture and cement composition |
| WO2018101140A1 (en) * | 2016-11-29 | 2018-06-07 | 花王株式会社 | Additive for hydraulic-setting composition |
| JP2018087104A (en) * | 2016-11-29 | 2018-06-07 | 花王株式会社 | Additive for hydraulic composition |
| JP2018090476A (en) * | 2016-11-29 | 2018-06-14 | 花王株式会社 | Additives for hydraulic compositions |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6210946B2 (en) | 1987-03-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4118242A (en) | Process for manufacturing concrete of high corrosion resistance | |
| EP0077129B1 (en) | Additive for hydraulic cement mixes | |
| US4632186A (en) | Well cementing method using an AM/AMPS fluid loss additive blend | |
| JPH06199555A (en) | Hydraulic cement hardening accelerator admixture incorporating glycol | |
| US4606770A (en) | Additive for hydraulic cement mixes | |
| US3689295A (en) | Quick-setting portland cement | |
| JPH01108138A (en) | Additive for reducing shrinkage of portland cement containing construction material | |
| JPS6210946B2 (en) | ||
| JPS61141649A (en) | Cement composition | |
| JPH02120261A (en) | low heat cement composition | |
| JPS61117142A (en) | Cement composition | |
| US2081642A (en) | Indurating composition for concrete | |
| JPS61106449A (en) | Improvement for properties of cement mortar and concrete | |
| US2127451A (en) | Hardening and waterproofing composition for concrete or mortar | |
| EP0142936B1 (en) | Improved method for controlling contraction in setting cementitious systems | |
| JPS6389440A (en) | High alumina cement composition capsule and paste | |
| US2081643A (en) | Indurating composition for concrete | |
| JPS6221742A (en) | Cement composition | |
| JPH02133358A (en) | Hydraulic composition | |
| CN112537926A (en) | Sulfate corrosion resistant concrete and preparation method thereof | |
| JPS6016855A (en) | Plaster composition | |
| US3490931A (en) | Alkali silicate concretes | |
| JPS6253468B2 (en) | ||
| JPH01500107A (en) | Volume stable curing hydraulic cement | |
| JPS61295268A (en) | Raw material composition for polymer cement mortar |