JPH02248352A - Mortar and concrete - Google Patents
Mortar and concreteInfo
- Publication number
- JPH02248352A JPH02248352A JP6915389A JP6915389A JPH02248352A JP H02248352 A JPH02248352 A JP H02248352A JP 6915389 A JP6915389 A JP 6915389A JP 6915389 A JP6915389 A JP 6915389A JP H02248352 A JPH02248352 A JP H02248352A
- Authority
- JP
- Japan
- Prior art keywords
- aggregate
- cement
- mortar
- concrete
- strength
- 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
- 239000004567 concrete Substances 0.000 title claims abstract description 14
- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 14
- 239000004568 cement Substances 0.000 claims abstract description 28
- 238000006703 hydration reaction Methods 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052681 coesite Inorganic materials 0.000 abstract description 3
- 229910052906 cristobalite Inorganic materials 0.000 abstract description 3
- 239000000377 silicon dioxide Substances 0.000 abstract description 3
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 3
- 229910052682 stishovite Inorganic materials 0.000 abstract description 3
- 229910052905 tridymite Inorganic materials 0.000 abstract description 3
- 230000009257 reactivity Effects 0.000 abstract 2
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 229910001570 bauxite Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000047 product 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
- C04B28/04—Portland cements
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は高強度なモルタル及びコンクリートに関する。[Detailed description of the invention] (Industrial application field) The present invention relates to high strength mortar and concrete.
（従来の技術）
圧縮強度１０００ｋｇ／ｃｊを上回るような圧縮強度の
高いコンクリートやモルタルを作るには、水の混入割合
が比較的少ない硬練りにするのであって、水、セメント
比が低くなるほど、直線的比例関係で圧縮強度を高める
ことができる。(Prior art) In order to make concrete or mortar with a high compressive strength of more than 1000 kg/cj, hard mixing is required with a relatively low proportion of water, and the lower the water/cement ratio, the lower the water/cement ratio. Compressive strength can be increased in a linear proportional relationship.
また、合わせて所要の強度とスランプが満足されるよう
に、減水剤あるいはＡＥ剤を混和することも行われてい
る。In addition, water reducing agents or AE agents are also mixed in so that the required strength and slump are satisfied.
（発明が解決しようとする課題）
高強度モルタル、コンクリートを造りだすメカニズムは
、
■セメントペーストを高強度化する。(Problems to be solved by the invention) The mechanism for producing high-strength mortar and concrete is: ■ Increasing the strength of cement paste.
■セメントペーストを骨材界面の付着力を高強度化する
。■Increasing the adhesive strength of cement paste at the aggregate interface.
■強度の高い骨材を使用する。■Use high-strength aggregate.
などであるが、高強度な骨材を用いてもセメントペース
トとの接合面での接着力が不充分であったり骨材それ自
体の強度が低ければ１０００ｋｇ／ｃｊ程度の圧縮強度
を保持した高強度コンクリートやモルタルを得ることが
できなかった。However, even if high-strength aggregate is used, if the adhesive force at the bonding surface with cement paste is insufficient or the strength of the aggregate itself is low, high-strength aggregate that maintains a compressive strength of about 1000 kg/cj It was not possible to obtain strength concrete or mortar.
骨材とセメントペーストとの接む力が不充分である場合
には圧縮荷重によって骨材と周囲のセメントペトリツス
クとの間に微小な空隙を成長させ、上下からの圧縮荷重
作用を受けた場合にこの空隙内部に上下から圧縮すると
同時に両脇方向へ膨らむ力が作用するのである。従って
、骨材やセメントマトリックスの破壊を生ずる以前に両
者の界面で接着破壊を生じ、所定の強度を確保維持する
ことができないのである。If the contact force between the aggregate and cement paste is insufficient, a compressive load will cause a small gap to grow between the aggregate and the surrounding cement paste, and the compressive load will be applied from above and below. In this case, a force is applied to the inside of this gap that compresses it from above and below and at the same time expands toward both sides. Therefore, adhesive failure occurs at the interface between the aggregate and cement matrix before failure occurs, making it impossible to maintain the desired strength.
従来のコンクリートでは骨材とセメントペーストとの接
合面に水酸化カルシウムよりなる付着膜が形成され、セ
メントペーストと骨材との接着強度を小さくしているこ
とが知られている。It is known that in conventional concrete, an adhesive film made of calcium hydroxide is formed on the bonding surface between aggregate and cement paste, reducing the adhesive strength between cement paste and aggregate.
本発明は上記事情に鑑みてなされたものであって、その
目的は骨材とセメントペーストとの接着面での一体化を
充分に行わせることによって圧縮強度の高いモルタルあ
るいはコンクリートを提供するにある。The present invention has been made in view of the above circumstances, and its purpose is to provide mortar or concrete with high compressive strength by sufficiently integrating aggregate and cement paste at the bonding surface. .
（課題を解決するための手段）
上記目的を達成するために、本発明に係るモルタル及び
コンクリートはセメントと混練したときの水和反応の際
にセメント水和物との反応性を有する物質を骨材とする
ものである。(Means for Solving the Problems) In order to achieve the above object, the mortar and concrete according to the present invention contain substances that are reactive with cement hydrate during a hydration reaction when mixed with cement. It is used as a material.
（作 用）
一般的にはセメント中のＣａｂ、５ｉ０２等が水と反応
して硬化が進み同時に骨材との付着力を高めていくが、
骨材に反応性骨材を用いた場合には、骨材界面において
骨材のもつ主成分とセメント中のＣａｂ、Ｓｉｎ、が水
と反応してより強固な生成物ができ、セメント水和物と
骨材とが一体化し、−層付着力を高めることになる。(Function) Generally, Cab, 5i02, etc. in cement react with water and harden, increasing the adhesion to aggregate.
When reactive aggregates are used as aggregates, the main components of the aggregate and Cab and Sin in the cement react with water at the aggregate interface to form a stronger product, resulting in cement hydrate. and the aggregate are integrated, increasing the adhesion of the -layer.
（実 施 例）
そこで、本発明のモルタルあるいはコンクリートにおい
ては反応性骨材としてボーキサイトを選びポルトランド
セメントと混ぜるのである。(Example) Therefore, in the mortar or concrete of the present invention, bauxite is selected as the reactive aggregate and mixed with Portland cement.
ボーキサイトにはそれ自体に高い圧縮力に耐える強度が
ある。また、水和反応を行なわせるために水と混練する
とき、この水分の存在のもとでＣａｏ、ＳｉＯ２とこれ
ら骨材表面のＡＮ２０ｉとの間で新な水和反応生成物が
生じセメントペーストと骨材とは強固−法化した安定的
な構造を形成する。Bauxite itself has the strength to withstand high compressive forces. In addition, when kneading with water to cause a hydration reaction, new hydration reaction products are generated between Cao, SiO2 and AN20i on the surface of these aggregates in the presence of this moisture, forming a cement paste. Aggregate forms a strong and stable structure.
（効 果）
以上述べたように、本発明のモルタル及びコンクリート
においては反応活性を有する物質を骨材として使用する
ので、骨材とセメントペーストの接着面での一体化が高
まり、モルタルおよびコンクリートの強度を充分に発揮
した高強度なコンクリートやモルタルを実現できる効果
がある。(Effects) As mentioned above, in the mortar and concrete of the present invention, since a reactive substance is used as aggregate, the integration of the aggregate and cement paste at the bonding surface is enhanced, and the mortar and concrete are It has the effect of producing high-strength concrete and mortar that exhibit sufficient strength.
Claims (1)
ト水和物との反応性を有する物質を骨材とすることを特
徴としたモルタル及びコンクリート。(1) Mortar and concrete characterized in that the aggregate is a substance that is reactive with cement hydrate during a hydration reaction when mixed with cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6915389A JPH02248352A (en) | 1989-03-23 | 1989-03-23 | Mortar and concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6915389A JPH02248352A (en) | 1989-03-23 | 1989-03-23 | Mortar and concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02248352A true JPH02248352A (en) | 1990-10-04 |
Family
ID=13394442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6915389A Pending JPH02248352A (en) | 1989-03-23 | 1989-03-23 | Mortar and concrete |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02248352A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS564506A (en) * | 1979-06-22 | 1981-01-17 | Omori Machinery | Film forming apparatus |
| JPS573772A (en) * | 1980-06-04 | 1982-01-09 | Kurosaki Refractories Co | Hydraulic refractory composition |
| JPS59141463A (en) * | 1983-01-31 | 1984-08-14 | 多木化学株式会社 | Heat resistant material |
| JPS60166253A (en) * | 1984-02-10 | 1985-08-29 | 松下電工株式会社 | Manufacture of construction board |
-
1989
- 1989-03-23 JP JP6915389A patent/JPH02248352A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS564506A (en) * | 1979-06-22 | 1981-01-17 | Omori Machinery | Film forming apparatus |
| JPS573772A (en) * | 1980-06-04 | 1982-01-09 | Kurosaki Refractories Co | Hydraulic refractory composition |
| JPS59141463A (en) * | 1983-01-31 | 1984-08-14 | 多木化学株式会社 | Heat resistant material |
| JPS60166253A (en) * | 1984-02-10 | 1985-08-29 | 松下電工株式会社 | Manufacture of construction board |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH06500525A (en) | Reinforced cement mixed with selected aggregates | |
| ES8505904A1 (en) | Concrete additive admixture containing microsilica and concrete produced therewith | |
| SE8201567L (en) | WANT TO ENCOURAGE RADIOACTIVE WASTE MATERIAL | |
| JPS6219388B2 (en) | ||
| KR960700976A (en) | Cement type kneaded molded article having high bending strength and compressive strength, and method of production | |
| JP2001302324A (en) | Plastic grout | |
| US2934932A (en) | Hydraulic cement mortar compositions and methods of use | |
| US2890965A (en) | Additive for binding agents hardened by hydration and process of forming the same | |
| JPH02248352A (en) | Mortar and concrete | |
| JPH01298050A (en) | Flash setting agent for cement | |
| JPS61155239A (en) | Cementitious set conditioning composition | |
| JPH02252643A (en) | Mortar, concrete and mixing material therefor | |
| JP3183429B2 (en) | Method for producing self-compacting concrete | |
| JP2000169212A (en) | Hardened form using steelmaking slag | |
| KR900700408A (en) | Production method and composition of porous lightweight aggregate | |
| JPH03159944A (en) | Application of hydraulic composite material | |
| Wagner | Methylcellulose in water-retentive hydraulic cements | |
| US1696899A (en) | Cement | |
| US1627952A (en) | Plastic cementitious material | |
| JPH0255251A (en) | Improvement of adhesive strength between aggregate and cement paste | |
| JPH0580422B2 (en) | ||
| JP2900261B2 (en) | Hydraulic lightweight composition and method for producing hydraulic lightweight molded article | |
| JPH0492846A (en) | Concrete composition | |
| JPH04325202A (en) | Manufacture of hard cement chip board | |
| JPH06344314A (en) | Production of composite decorative panel |