JPH0597493A - Method for enhancing compressive strength of cement mortar and concrete - Google Patents
Method for enhancing compressive strength of cement mortar and concreteInfo
- Publication number
- JPH0597493A JPH0597493A JP25797791A JP25797791A JPH0597493A JP H0597493 A JPH0597493 A JP H0597493A JP 25797791 A JP25797791 A JP 25797791A JP 25797791 A JP25797791 A JP 25797791A JP H0597493 A JPH0597493 A JP H0597493A
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- compressive strength
- cement
- added
- ferric oxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011083 cement mortar Substances 0.000 title claims abstract description 6
- 238000000034 method Methods 0.000 title claims description 27
- 230000002708 enhancing effect Effects 0.000 title claims description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 24
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000011398 Portland cement Substances 0.000 claims abstract description 9
- 239000002245 particle Substances 0.000 claims abstract description 7
- 239000000049 pigment Substances 0.000 claims abstract description 6
- 238000004898 kneading Methods 0.000 claims abstract description 4
- 239000004568 cement Substances 0.000 abstract description 16
- 239000000203 mixture Substances 0.000 abstract description 13
- 239000004576 sand Substances 0.000 abstract description 6
- 238000000465 moulding Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 15
- 239000000047 product Substances 0.000 description 7
- 230000001965 increasing effect Effects 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000036571 hydration Effects 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229920006222 acrylic ester polymer Polymers 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- -1 amine salt Chemical class 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- WETINTNJFLGREW-UHFFFAOYSA-N calcium;iron;tetrahydrate Chemical compound O.O.O.O.[Ca].[Fe].[Fe] WETINTNJFLGREW-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 235000013980 iron oxide Nutrition 0.000 description 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000009291 secondary effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、圧縮強度以外の諸性質
に実質的に影響を及ぼすことなく最終セメントモルタル
及びコンクリートの製品の圧縮強度を著しく増進させる
方法に関し、さらに詳しくは圧縮強度の高い着色コンク
リートの製造方法に関する。FIELD OF THE INVENTION The present invention relates to a method for significantly enhancing the compressive strength of finished cement mortar and concrete products without substantially affecting properties other than the compressive strength. The present invention relates to a method for manufacturing colored concrete.
【０００２】[0002]
【従来の技術】セメントコンクリートは、建築物や土木
構造物あるいは成型品のための経済的かつ耐久性にすぐ
れた材料として多用されてきている。コンクリートは、
セメントに骨材と称する砂、砕砂または砂利あるいは砕
石等を添加し、これに必要に応じてフライアッシュ、高
炉スラッグのような混和材、さらにはＡＥ剤、減水剤の
ような混和剤を添加し、混合し、水和に必要な量の水を
添加して混練し、施工後硬化させることにより製造され
る。Cement concrete has been widely used as an economical and durable material for buildings, civil engineering structures or molded products. Concrete is
Sand, crushed sand or gravel or crushed stone, which is called aggregate, is added to cement, and if necessary, admixtures such as fly ash and blast furnace slag, as well as admixtures such as AE agents and water reducing agents are added. It is produced by mixing, adding water in an amount necessary for hydration, kneading, and curing after construction.
【０００３】セメントの強度を上げる方法としては、従
来より無機塩酸を添加する方法、あるいは石綿を添加す
る方法等が知られている。しかしながら前者の無機塩添
加法では、初期強度はともかくとして長期にわたる強度
保持には有効ではなく、また後者の方法では石綿等の飛
散による重大な公害問題の発生がある。そのためオキシ
カルボン酸の水溶性アミン塩のような有機物、あるいは
アクリル酸エステルポリマーのような有機ポリマーを添
加する方法が採られる場合がある。しかしこのような方
法では曲げ強度あるいは耐衝撃性の向上が期待される
が、添加有機物の種類あるいは養生条件等によって圧縮
強度が低下することがある。As a method of increasing the strength of cement, a method of adding inorganic hydrochloric acid, a method of adding asbestos, etc. have been conventionally known. However, the former method of adding an inorganic salt is not effective for maintaining the strength for a long period of time regardless of the initial strength, and the latter method causes a serious pollution problem due to scattering of asbestos. Therefore, a method of adding an organic substance such as a water-soluble amine salt of oxycarboxylic acid or an organic polymer such as an acrylic ester polymer may be adopted. However, although such a method is expected to improve the bending strength or impact resistance, the compressive strength may be lowered depending on the type of the added organic substance or the curing conditions.
【０００４】[0004]
【発明が解決しようとする課題】本発明の主要な目的
は、セメントモルタルまたはコンクリートの諸性質に実
質的に悪影響を及ぼすことなく、その圧縮強度を顕著に
増進する方法を提供することにある。SUMMARY OF THE INVENTION It is a primary object of the present invention to provide a method of significantly increasing the compressive strength of cement mortar or concrete without substantially adversely affecting its properties.
【０００５】[0005]
【課題を解決するための手段】かくして本発明は、ポル
トランドセメント１００重量部に対して、骨材１００〜
４００重量部及び平均粒径が０．３〜１μｍの顔料用酸
化第二鉄を１〜４重量部添加し、所要量の水の存在下で
混練することを特徴とするセメントモルタル及びコンク
リートの圧縮強度増進方法を提供する。Thus, the present invention is based on 100 parts by weight of Portland cement and 100 to 100 parts of aggregate.
400 parts by weight and 1 to 4 parts by weight of ferric oxide for pigment having an average particle size of 0.3 to 1 μm, and kneading in the presence of a required amount of water, for compression of cement mortar and concrete Provide a strength enhancement method.
【０００６】本願発明で使用するポルトランドセメント
は、「普通」、「早強」「超早強」「中庸熱」及び「耐
硫酸塩」のいずれに分類されるものでもよいが、本発明
の効果を最も良く発現させるためには普通ポルトランド
セメントを使用するのが好ましい。The Portland cement used in the present invention may be classified into any of "normal", "early early strength", "super early strength", "moderate heat" and "sulfate resistant", but the effect of the present invention It is preferable to use ordinary Portland cement for the best expression.
【０００７】また骨材としては、砂及び砕砂などの細骨
材及び砂利または砕石等の粗骨材が使用される。ただ
し、アルカリ骨材反応を生じさせるような骨材あるいは
洗浄不充分な海砂等を使用するのは好ましくない。骨材
の使用量はセメント１００重量部当り１００〜４００重
量部であり、特に２００〜４００重量部であるが、当業
者であれば用途に応じて最適量が選定しうる。As the aggregate, fine aggregate such as sand and crushed sand and coarse aggregate such as gravel or crushed stone are used. However, it is not preferable to use an aggregate that causes an alkaline aggregate reaction or sea sand that has been insufficiently washed. The amount of aggregate used is 100 to 400 parts by weight, especially 200 to 400 parts by weight, per 100 parts by weight of cement, but those skilled in the art can select the optimum amount according to the application.
【０００８】本発明において最も重要であるのは、酸化
第二鉄の添加である。酸化第二鉄は分散性及びセメント
成分との水和反応性の点から微粉状であることが好まし
く、平均粒径が０．３〜１μｍの範囲であるのが好まし
い。またこの範囲内の粒径を有する酸化第二鉄は、着色
分散性が良好であるという副次的な効果をもたらし、色
むらのない着色コンクリート製品を与える。酸化第二鉄
の好ましい添加量は、セメント１００重量部に対して１
〜４重量部、さらに好ましくは２〜４重量部である。４
重量部を超えると、圧縮強度の好ましい増加は達成され
ず、１重量部未満では有意な効果が発現しない。Most important in the present invention is the addition of ferric oxide. From the viewpoint of dispersibility and hydration reactivity with cement components, ferric oxide is preferably in the form of fine powder, and the average particle size is preferably in the range of 0.3 to 1 μm. Further, ferric oxide having a particle diameter within this range brings about a secondary effect that coloring dispersibility is good, and gives a colored concrete product having no color unevenness. The preferred amount of ferric oxide added is 1 with respect to 100 parts by weight of cement.
-4 parts by weight, more preferably 2-4 parts by weight. Four
If it exceeds 1 part by weight, a preferable increase in compressive strength is not achieved, and if it is less than 1 part by weight, no significant effect is exhibited.
【０００９】なおポルトランドセメント製品中には本来
何らかの酸化鉄が数パーセントまでのオーダーで存在す
ることがあるが、本発明において添加される酸化第二鉄
の量には、そのようなセメント中に本来存在するものは
加算されない。Although some iron oxides are naturally present in Portland cement products in the order of up to a few percent, the amount of ferric oxide added in the present invention is essentially in such cements. Those that exist are not added.
【００１０】以上の如きセメント組成物を、セメントの
水和に必要な量の水（例えば組成物全量の１５〜２０重
量％の水）の存在下に混練する。かくして得られる配合
物を成形あるいは施工に使用する。The above cement composition is kneaded in the presence of an amount of water necessary for hydration of cement (for example, 15 to 20% by weight of the total amount of the composition). The compound thus obtained is used for molding or construction.
【００１１】本発明方法における具体的手順を例示すれ
ば次の通りである。The concrete procedure in the method of the present invention is as follows.
【００１２】回転または撹拌しうる容器に所要量のセメ
ント及び骨材を投入し、撹拌し、次いでこれに酸化第二
鉄粉末を添加し、さらに撹拌を（例えば５〜１０分間）
継続して組成物が均一になるようにし、次いで必要に応
じて慣用の混和剤を添加混合してもよい。[0012] The required amount of cement and aggregate is put into a container which can be rotated or stirred, stirred, and then ferric oxide powder is added thereto, and further stirred (for example, 5 to 10 minutes).
The composition may be homogenized continuously, and then, if necessary, a conventional admixture may be added and mixed.
【００１３】混合が終了したら水を添加し、充分混練し
て生コンクリートとし、これを空隙が生じないように打
設施工に用いる。When the mixing is completed, water is added, and the mixture is sufficiently kneaded to prepare fresh concrete, which is used for the pouring work so that voids are not generated.
【００１４】本発明方法はすべての常温下で行うことが
できる。本発明方法による圧縮強度増進の理由として
は、セメントに水を加えて生コンクリートとする際に添
加された酸化第二鉄が存在することにより、適度のカル
シウムフェライト化反応が生じて骨材の接合強度が更に
一層強化向上されること、かくして組成物全体の凝集力
が向上し、組織が緻密化することが考えられる。The process of the invention can be carried out at all ambient temperatures. The reason for increasing the compressive strength by the method of the present invention is that the presence of ferric oxide added when water is added to the cement to prepare the green concrete causes an appropriate calcium ferrite formation reaction to bond the aggregate. It is considered that the strength is further strengthened and improved, and thus the cohesive force of the entire composition is improved and the structure is densified.
【００１５】既述のようにセメント中には鉄分（おそら
く酸化第二鉄の形）が含有されているが、微細な酸化第
二鉄を生コンクリート化の直前に添加し混合使用するこ
とによってのみ本発明の効果が発揮される。さらには本
発明では着色が同時に出来るという特徴もある。本発明
方法により得られるコンクリート最終製品は、骨材の結
合の強化（あるいは組成物の凝集力の向上）により表面
が平滑化するという傾向を示すが、同様な組成において
酸化第二鉄を添加しない場合には、表面が粗く、細粉が
剥離する傾向が認められる。As described above, the cement contains iron (perhaps in the form of ferric oxide), but only by adding fine ferric oxide just before forming fresh concrete and mixing and using it. The effect of the present invention is exhibited. Furthermore, the present invention has a feature that coloring can be performed at the same time. The concrete final product obtained by the method of the present invention shows a tendency that the surface is smoothed by strengthening the bond of the aggregate (or improving the cohesive force of the composition), but ferric oxide is not added in the same composition. In some cases, the surface is rough and fine powder tends to peel off.
【００１６】[0016]
【実施例】本発明を以下の実施例及び比較例によりさら
に具体的に説明する。EXAMPLES The present invention will be described in more detail with reference to the following examples and comparative examples.
【００１７】[0017]
【実施例１〜３及びそれらの比較例】普通ポルトランド
セメント４５０ｇと砂利１３５０ｇとをよく混合し、こ
れに平均粒径０．５μｍの顔料用酸化第二鉄をセメント
に対し０重量％〜７重量％（１重量％刻み）の種々の量
で添加し、１０分間混合した後、水を組成物に対して１
５重量％添加し、混合し、各々について９ｍｍ×３０ｃ
ｍの打設棒中に入れて直径５ｃｍ長さ１０ｃｍの試料を
１〜３本作成し、養生２８日後の圧縮強度をＪＩＳ Ａ
１１０８の試験方法に測定した。Examples 1 to 3 and comparative examples thereof 450 g of ordinary Portland cement and 1350 g of gravel were well mixed, and ferric oxide for pigment having an average particle diameter of 0.5 μm was added to the cement in an amount of 0% to 7% by weight. % (In 1% by weight increments) and mixed for 10 minutes, after which water was added to the composition at 1%.
Add 5 wt% and mix, 9mm x 30c for each
1 to 3 pieces having a diameter of 5 cm and a length of 10 cm were put in a casting rod of m, and the compressive strength after 28 days of curing was measured by JIS A.
The test method of 1108 was measured.
【００１８】なおコンクートの強度、例えば圧縮強度
は、試料の作成条件（殊に温度条件）により左右される
ことに鑑み、実験の実施時期を気温、水温が異なるよう
に、 １２月 （実施例１ 及びその比較例） ３月 （実施例２ 及びその比較例） ７月 （実施例３ 及びその比較例） を選定し、それぞれ実施した。各実施例における比較例
は、酸化第二鉄の添加量が１〜４重量％の範囲外のもの
である。Considering that the strength of the concrete, for example, the compressive strength, depends on the preparation conditions (particularly the temperature conditions) of the sample, the experiment should be carried out in December (Example 1 And its comparative example) March (Example 2 and its comparative example) July (Example 3 and its comparative example) were selected and implemented. In the comparative examples of the respective examples, the addition amount of ferric oxide is out of the range of 1 to 4% by weight.
【００１９】 実施例 寸法（径） 断面図 重量 試験時期 ｃｍ ｃｍ2 ｇ １ ５ １９．６３ ３５０〜３８０ １２月 ２ ５ １９．６３ ３５０〜３８０ ３月 ３ ５ １９．６３ ３６０ ７月 材令２８日後に測定した各試料の圧縮強度値を図１にグ
ラフで表わす。グラフの縦軸は圧縮強度（ｋｇｆ／ｃｍ
2）であり横軸は酸化第二鉄添加量（重量％である。Example Dimension (diameter) Cross-sectional view Weight Test time cm cm 2 g 1 5 193.63 350-380 December 25 195.63 350-380 March 3 5 19.63 360 July July 28th The compressive strength value of each sample measured later is represented graphically in FIG. The vertical axis of the graph is the compressive strength (kgf / cm
2 ) and the horizontal axis is the amount of ferric oxide added (% by weight).
【００２０】図１におけるグラフ１は実施例１及びその
比較例（△印）の結果、グラフ２は実施例２及びその比
較例（△印）の結果、そしてグラフ３は実施例３及びそ
の比較例（△印）の結果を示している。Graph 1 in FIG. 1 is the result of Example 1 and its comparative example (marked with Δ), Graph 2 is the result of Example 2 and its comparative example (marked with Δ), and Graph 3 is Example 3 and its comparison. The result of the example (marked with Δ) is shown.
【００２１】[0021]
【発明の効果】これらの実施例及び比較例の結果から明
らかなように、本発明によれば酸化第二鉄を添加しない
場合に比較した約２倍程度に及ぶ圧縮強度が得られる。
また本発明により得られる最終コンクリート製品は色む
らがなく、表面が比較的平滑である傾向を示す。As is clear from the results of these Examples and Comparative Examples, according to the present invention, a compressive strength that is about twice as high as that obtained when ferric oxide is not added can be obtained.
Further, the final concrete product obtained by the present invention does not have color unevenness and tends to have a relatively smooth surface.
【図１】実施例１〜３及び比較例で得られたコンクリー
ト製品試料の酸化第二鉄粉末添加量（横軸：重量％）と
２８日養生後圧縮強度（縦軸：ｋｇｆ／ｃｍ2）との関
係を示すグラフであり、グラフ１は実施例１及びその比
較例、グラフ２は実施例２及びその比較例、グラフ３は
実施例３及びその比較例の結果を示す（△印は比較
例）。FIG. 1 shows the addition amount of ferric oxide powder (horizontal axis: wt%) and compressive strength after 28-day curing (vertical axis: kgf / cm 2 ) of concrete product samples obtained in Examples 1 to 3 and Comparative Example. FIG. 1 is a graph showing the relationship between Example 1 and its comparative example, Graph 2 shows the result of Example 2 and its comparative example, and Graph 3 shows the result of Example 3 and its comparative example. Example).
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成３年１１月６日[Submission date] November 6, 1991
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１４[Correction target item name] 0014
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１４】本発明方法はすべての常温下で行うことが
できる。本発明方法による圧縮強度増進の理由として
は、セメントに水を加えて生コンクリートとする際に添
加された酸化第二鉄が存在することにより、微細な酸化
第二鉄が骨材の間隙を緻密化すると共に適度のカルシウ
ムフェライト化反応が生じて骨材の接合強度が更に一層
強化向上されること、かくして組成物全体の凝集力が向
上し、組織が緻密化することが考えられる。The process of the invention can be carried out at all ambient temperatures. The reason why the compressive strength is increased by the method of the present invention is that the presence of ferric oxide added when water is added to cement to prepare fresh concrete causes fine ferric oxide to densify the gaps in the aggregate. It is conceivable that, when the composition is made into a suitable form, a suitable calcium-ferritization reaction is caused to further strengthen and improve the bonding strength of the aggregate, and thus the cohesive force of the entire composition is improved and the structure is densified.
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１７[Correction target item name] 0017
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１７】[0017]
【実施例１〜３及びそれらの比較例】普通ポルトランド
セメント４５０ｇと砂利１３５０ｇとをよく混合し、こ
れに平均粒径０．５μｍの顔料用酸化第二鉄をセメント
に対し０重量％〜７重量％（１重量％刻み）の種々の量
で添加し、１０分間混合した後、水を組成物に対して１
５重量％添加し、混合し、各々について直径５ｃｍ長さ
１０ｃｍのコンクリートの圧縮強度試験用試供体を１〜
３本作成し、養生２８日後の圧縮強度をＪＩＳＡ１１０
８の試験方法で測定した。Examples 1 to 3 and comparative examples thereof 450 g of ordinary Portland cement and 1350 g of gravel were well mixed, and ferric oxide for pigment having an average particle diameter of 0.5 μm was added to the cement in an amount of 0% to 7% by weight. % (In 1% by weight increments) and mixed for 10 minutes, after which water was added to the composition at 1%.
5% by weight was added and mixed, and 1 to 5 specimens for compressive strength test of concrete having a diameter of 5 cm and a length of 10 cm were mixed with each other.
3 pieces were prepared and the compressive strength after 28 days of curing was set to JISA110.
It measured by the test method of 8.
【手続補正３】[Procedure 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２１[Correction target item name] 0021
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００２１】[0021]
【発明の効果】これらの実施例及び比較例の結果から明
らかなように、本発明によれば酸化第二鉄を添加しない
場合に比較して約２倍程度に及ぶ圧縮強度が得られる。
また本発明により得られる最終コンクリート製品は色む
らがなく、表面が比較的平滑である傾向を示す。As is clear from the results of these Examples and Comparative Examples, according to the present invention, a compressive strength that is about twice as high as that obtained when ferric oxide is not added can be obtained.
Further, the final concrete product obtained by the present invention does not have color unevenness and tends to have a relatively smooth surface.
───────────────────────────────────────────────────── 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 22:06 Ｚ 2102−4Ｇ 14:02） Ｚ 2102−4Ｇ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location C04B 22:06 Z 2102-4G 14:02) Z 2102-4G
Claims (1)
して、骨材１００〜４００重量部及び平均粒径が０．３
〜１μｍの顔料用酸化第二鉄を１〜４重量部添加し、所
要量の水の存在下で混練することを特徴とするセメント
モルタル及びコンクリートの圧縮強度増進方法。1. 100 to 400 parts by weight of aggregate and 100 parts by weight of Portland cement and an average particle size of 0.3.
A method for enhancing the compressive strength of cement mortar and concrete, which comprises adding 1 to 4 parts by weight of ferric oxide for pigment of 1 μm and kneading in the presence of a required amount of water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25797791A JPH0597493A (en) | 1991-10-04 | 1991-10-04 | Method for enhancing compressive strength of cement mortar and concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25797791A JPH0597493A (en) | 1991-10-04 | 1991-10-04 | Method for enhancing compressive strength of cement mortar and concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0597493A true JPH0597493A (en) | 1993-04-20 |
Family
ID=17313837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25797791A Pending JPH0597493A (en) | 1991-10-04 | 1991-10-04 | Method for enhancing compressive strength of cement mortar and concrete |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0597493A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007054960A3 (en) * | 2005-09-06 | 2007-07-26 | Ibrahimbhai Kalaniya Yusuf | A method of production for metallic iron concrete hardener and cement concrete made therefrom |
| KR100901883B1 (en) * | 2008-11-12 | 2009-06-09 | 박이근 | A cement concrete composition comprising an iron oxide pigment |
| KR100902937B1 (en) * | 2009-03-11 | 2009-06-15 | 박이근 | Color concrete pavement method using cement concrete composition containing iron oxide pigments |
| JP2016108208A (en) * | 2014-12-10 | 2016-06-20 | 花王株式会社 | Hydraulic composition |
| CN106830731A (en) * | 2017-02-15 | 2017-06-13 | 贵州师范大学 | A kind of method for determining the stable volumes of MgO in grinding coagulation soil |
| CN118108461A (en) * | 2024-03-01 | 2024-05-31 | 广东省公路建设有限公司湾区特大桥养护技术中心 | A concrete material for early-strength expansion joint anchorage area and performance test method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59107991A (en) * | 1982-12-10 | 1984-06-22 | 株式会社トクヤマ | Color coating composition for cement roof tile |
-
1991
- 1991-10-04 JP JP25797791A patent/JPH0597493A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59107991A (en) * | 1982-12-10 | 1984-06-22 | 株式会社トクヤマ | Color coating composition for cement roof tile |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007054960A3 (en) * | 2005-09-06 | 2007-07-26 | Ibrahimbhai Kalaniya Yusuf | A method of production for metallic iron concrete hardener and cement concrete made therefrom |
| KR100901883B1 (en) * | 2008-11-12 | 2009-06-09 | 박이근 | A cement concrete composition comprising an iron oxide pigment |
| KR100902937B1 (en) * | 2009-03-11 | 2009-06-15 | 박이근 | Color concrete pavement method using cement concrete composition containing iron oxide pigments |
| JP2016108208A (en) * | 2014-12-10 | 2016-06-20 | 花王株式会社 | Hydraulic composition |
| CN106830731A (en) * | 2017-02-15 | 2017-06-13 | 贵州师范大学 | A kind of method for determining the stable volumes of MgO in grinding coagulation soil |
| CN106830731B (en) * | 2017-02-15 | 2019-04-12 | 贵州师范大学 | MgO stabilizes the method for volume during a kind of determining grinding coagulation is native |
| CN118108461A (en) * | 2024-03-01 | 2024-05-31 | 广东省公路建设有限公司湾区特大桥养护技术中心 | A concrete material for early-strength expansion joint anchorage area and performance test method |
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