JPH02296755A - Production of high strength concrete - Google Patents
Production of high strength concreteInfo
- Publication number
- JPH02296755A JPH02296755A JP11817889A JP11817889A JPH02296755A JP H02296755 A JPH02296755 A JP H02296755A JP 11817889 A JP11817889 A JP 11817889A JP 11817889 A JP11817889 A JP 11817889A JP H02296755 A JPH02296755 A JP H02296755A
- Authority
- JP
- Japan
- Prior art keywords
- aggregate
- coarse aggregate
- strength
- concrete
- spherical
- 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
- 239000011372 high-strength concrete Substances 0.000 title claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000011435 rock Substances 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 239000004567 concrete Substances 0.000 abstract description 6
- 235000019738 Limestone Nutrition 0.000 abstract description 4
- 239000006028 limestone Substances 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 238000007493 shaping process Methods 0.000 abstract description 3
- 239000010438 granite Substances 0.000 abstract description 2
- 239000004575 stone Substances 0.000 abstract description 2
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 1
- 241000356114 Trachytes Species 0.000 description 1
- -1 andesite Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (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〕
この発明は高強度のコンクリートを製造する方法に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] This invention relates to a method for producing high strength concrete.
従来においては、コンクリートの強度のアップのために
、セメントの改質、コンクリート成分の配合割合の見直
し、特殊な混和剤の採用、締め固め方法や養生方法の見
直しなどが行われてきている。Conventionally, in order to increase the strength of concrete, efforts have been made to modify cement, review the mixing ratio of concrete components, use special admixtures, and review compaction and curing methods.
しかし異方性がない高強度のコンクリ−１・の安価な提
供という点では、満足の行く段階まで達してない。However, we have not reached a satisfactory level in terms of providing high-strength concrete without anisotropy at a low cost.
そこでこの発明は、異方性がない高強度のコンクリート
を安価に製造する方法を提供することを［１的としてい
る。Therefore, one object of the present invention is to provide a method for manufacturing high-strength concrete without anisotropy at low cost.
本発明者は、上記の目的を達成するために種々の試験を
行った結果、粗骨材として、直径が２０ｍｍ以下、特に
２０〜１３ｍｍの球形の岩石骨材を配合すると、きわめ
て￥ｆ効であることを確認した。As a result of conducting various tests to achieve the above object, the present inventor found that when spherical rock aggregate with a diameter of 20 mm or less, particularly 20 to 13 mm, is blended as coarse aggregate, it is extremely effective. I confirmed that there is.
ここで岩石骨材は、一般には、圧縮強度が１７００ｋｇ
／ｍｍ’以上（かつ動弾性係数６×ＩＯＭｐａ以上）の
材料、例えば安山岩、石英粗面岩、花こう岩、硬質砂岩
、硬質石灰岩などの砕石材料で構成すると好適であるこ
とが判明した。Here, the rock aggregate generally has a compressive strength of 1700 kg.
/mm' or more (and a dynamic elastic modulus of 6×IOMpa or more), such as crushed stone materials such as andesite, quartz trachyte, granite, hard sandstone, and hard limestone.
この発明の方法における直径が２０ ｍ ｍ以下の球形
の粗骨材の配合によるコンクリートの強度アップの作用
は解明できていないが、この上うな粗骨材は、強度特性
に異方性が少なく、充填率も高い（空隙率が低い）こと
などが寄与しているものと推定される。The effect of increasing the strength of concrete by mixing spherical coarse aggregate with a diameter of 20 mm or less in the method of this invention has not been elucidated, but in addition, coarse aggregate has little anisotropy in its strength properties; It is presumed that the high filling rate (low porosity) is a contributing factor.
以下に代表的な実施例を示す。 Typical examples are shown below.
実施例１
回転式整形機により平均直径２０ｍｍの球形に仕上げた
圧縮強度１８００ ｋ ｇ ／ ｃ ｍ ”の硬質石灰
石からなる粗骨材４６０１／ｒｎ’を、ポルトランドセ
メント２１５１ ／ ｍ ３、細骨材２３０！／ｍ３及
び水（水セメント比２５％）と配合して混練したコンク
リートを圧縮試験とスランプ試験に供したところ、圧縮
強度は６００ ｋ ｇ ／ ｃ ｍ ’スランプは６ｃ
ｍであった。Example 1 Coarse aggregate 4601/rn' made of hard limestone with a compressive strength of 1800 kg/cm'' and finished into a spherical shape with an average diameter of 20 mm using a rotary shaping machine was mixed with Portland cement 2151/m3 and fine aggregate 230 mm. !/m3 and water (water-cement ratio 25%) and kneaded and subjected to a compression test and a slump test, the compressive strength was 600 kg/cm and the slump was 6c.
It was m.
実施例２
平均粒径が１３ｍｍの球形硬質石灰石からなる粗骨材４
５０１／ｍ３を、セメント２２５１ ／ ｍ ’細骨材
２３５１／ｍ’及び水（水セメント比２５％）と配合し
て混練したコンクリートは、圧縮強度が１３００ｋｇ／
ｃｍ、スランプが７Ｃｍであった。Example 2 Coarse aggregate 4 made of spherical hard limestone with an average particle size of 13 mm
501/m3, cement 2251/m 'fine aggregate 2351/m' and water (water-cement ratio 25%), the concrete has a compressive strength of 1300 kg/m3.
cm, and the slump was 7 cm.
以上説明したところから明らかなように、この発明の方
法は、その形成（整形）にさしたるコストアップを伴わ
ない粒径が２０ ｍ ｍ以下の球形粗骨材の配合によっ
て、コンクリートの大幅な強度アップを可能にしたもの
で、この発明の方法によれば、汎用性の高い高強度のコ
ンクリートを安価に製造することができる。As is clear from the above explanation, the method of the present invention significantly increases the strength of concrete by mixing spherical coarse aggregate with a particle size of 20 mm or less without significantly increasing the cost of forming (shaping). According to the method of the present invention, highly versatile and high strength concrete can be manufactured at low cost.
Claims (3)
骨材を配合することを特徴とする、高強度コンクリート
の製造法。(1) A method for producing high-strength concrete, characterized by mixing spherical rock aggregate with a diameter of 20 mm or less as coarse aggregate.
求の範囲（１）項記載の高強度コンクリートの製造法。(2) The method for producing high-strength concrete according to claim (1), wherein the rock aggregate has a diameter of 20 to 13 mm.
上である、特許請求の範囲第（１）項または第（２）項
記載の高強度コンクリートの製造法。(3) The method for producing high-strength concrete according to claim (1) or (2), wherein the rock aggregate has a compressive strength of 1700 kg/mm^2 or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11817889A JPH02296755A (en) | 1989-05-10 | 1989-05-10 | Production of high strength concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11817889A JPH02296755A (en) | 1989-05-10 | 1989-05-10 | Production of high strength concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02296755A true JPH02296755A (en) | 1990-12-07 |
Family
ID=14730069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11817889A Pending JPH02296755A (en) | 1989-05-10 | 1989-05-10 | Production of high strength concrete |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02296755A (en) |
-
1989
- 1989-05-10 JP JP11817889A patent/JPH02296755A/en active Pending
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