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JP2002356358A - Water permeable concrete - Google Patents

Water permeable concrete

Info

Publication number
JP2002356358A
JP2002356358A JP2001164590A JP2001164590A JP2002356358A JP 2002356358 A JP2002356358 A JP 2002356358A JP 2001164590 A JP2001164590 A JP 2001164590A JP 2001164590 A JP2001164590 A JP 2001164590A JP 2002356358 A JP2002356358 A JP 2002356358A
Authority
JP
Japan
Prior art keywords
water
weight
cement
permeable concrete
parts
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
Application number
JP2001164590A
Other languages
Japanese (ja)
Inventor
Akira Obata
明 小畠
Satoshi Kajio
聡 梶尾
Katsutoshi Ichikawa
勝俊 市川
Tatsuzo Sato
達三 佐藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taiheiyo Cement Corp
Original Assignee
Taiheiyo Cement Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Taiheiyo Cement Corp filed Critical Taiheiyo Cement Corp
Priority to JP2001164590A priority Critical patent/JP2002356358A/en
Publication of JP2002356358A publication Critical patent/JP2002356358A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00241Physical properties of the materials not provided for elsewhere in C04B2111/00
    • C04B2111/00284Materials permeable to liquids
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00732Uses not provided for elsewhere in C04B2111/00 for soil stabilisation
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474Uses not provided for elsewhere in C04B2111/00
    • C04B2111/0075Uses not provided for elsewhere in C04B2111/00 for road construction

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)
  • Road Paving Structures (AREA)
  • Revetment (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide water permeable concrete large in coefficient of permeability and compressive strength, and easy in forming work, etc. SOLUTION: The water permeable concrete is manufactured by putting a kneaded material of composition composed of a coarse aggregate, and paste or mortar of 30-80 vol.% based on the aggregate into a formwork to form it and successively curing it. The paste or mortar contains 100 pts.wt. cement or fine particle mixture containing cement, 0-300 pts.wt. fine aggregate, 0.3-3.0 pts.wt. a water reducing agent and 20-40 pts.wt. water. As the water reducing agent, a powdery one is used.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、大きな透水係数及
び圧縮強度を有し、かつ、成形等の作業が容易である透
水性コンクリートに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a permeable concrete having a large coefficient of water permeability and compressive strength, and which can be easily formed and formed.

【0002】[0002]

【従来の技術】従来より、大きな透水係数及び圧縮強度
を有する透水性コンクリートとして、普通ポルトランド
セメント又は早強ポルトランドセメント100重量部に対
して、粒径0.3mm以下の細骨材100重量部程度、液体高性
能減水剤1.2重量部(固形分換算)程度、水24重量部程
度、及び粗骨材600重量部程度をミキサに投入して混練
し、混練物(粗骨材に粗骨材以外の材料からなるモルタ
ルが被覆した状態の粒体)を調製し、該混練物を型枠に
投入して振動成形し、養生することによって製造される
透水性コンクリートが知られている。上記透水性コンク
リートは、例えば、 1)粗骨材として5号砕石(粒径13〜20mm)を使用した
場合、透水係数が7.0〜9.0cm/sec程度で、圧縮強度が15
〜20N/mm2程度 2)粗骨材として7号砕石(粒径2.5〜5.0mm)を使用し
た場合、透水係数が1.0〜1.3cm/sec程度で、圧縮強度が
20〜30N/mm2程度 と大きな透水係数及び圧縮強度を有するものである。
2. Description of the Related Art Conventionally, as permeable concrete having a large coefficient of permeability and compressive strength, about 100 parts by weight of fine aggregate having a particle size of 0.3 mm or less with respect to 100 parts by weight of ordinary Portland cement or early-strength Portland cement, About 1.2 parts by weight of liquid high-performance water reducing agent (in terms of solid content), about 24 parts by weight of water, and about 600 parts by weight of coarse aggregate are put into a mixer and kneaded, and the mixture is kneaded (coarse aggregate other than coarse aggregate). There is known a water-permeable concrete manufactured by preparing a granular material covered with a mortar made of a material, charging the kneaded material into a mold frame, vibration-molding and curing. The permeable concrete includes, for example: 1) When crushed stone No. 5 (particle size: 13 to 20 mm) is used as coarse aggregate, the permeability is about 7.0 to 9.0 cm / sec, and the compressive strength is 15
~ 20N / mm2 2 ) When using No.7 crushed stone (particle size 2.5 ~ 5.0mm) as coarse aggregate, the permeability is about 1.0 ~ 1.3cm / sec and the compressive strength is
Those having a large permeability and compressive strength 20-30 N / mm 2 approximately.

【0003】[0003]

【発明が解決しようとする課題】上記透水性コンクリー
トにおいては、混練物(粗骨材に粗骨材以外の材料から
なるモルタルが被覆した状態の粒体)を振動成形する
際、モルタルが型枠の底部に流れ落ちて透水性コンクリ
ートの透水係数を低下させることを防ぐために、比較的
粘性が高いモルタルを用いて混練物を調製している。そ
のため、上記透水性コンクリートにおいては、混練物の
作業性が低く、成形等の作業に手間がかかる(例えば、
振動時間が長くなる等)、という問題があった。
In the above-described permeable concrete, when the kneaded material (granules in which coarse aggregate is covered with mortar made of a material other than coarse aggregate) is subjected to vibration molding, the mortar is formed by a mold. In order to prevent the water from flowing down to the bottom and lowering the permeability of the permeable concrete, the kneaded material is prepared using mortar having a relatively high viscosity. Therefore, in the permeable concrete, the workability of the kneaded material is low, and the work such as molding takes time (for example,
Vibration time becomes longer).

【0004】本発明は上記課題を解決し、大きな透水係
数及び圧縮強度を有し、かつ、成形等の作業が容易であ
る透水性コンクリートを提供することを目的とする。
An object of the present invention is to solve the above-mentioned problems, and to provide a permeable concrete having a large coefficient of water permeability and compressive strength, and which is easy to perform operations such as molding.

【0005】[0005]

【課題を解決するための手段】本発明者らは、上記課題
を解決すべく鋭意研究した結果、透水性コンクリート用
の材料として、セメント若しくはセメントを含む粉体混
合物、粉末減水剤、細骨材、粗骨材及び水を使用すると
ともに、その配合割合を特定することにより、上記課題
を解決することができることを見いだし、本発明を完成
させたものである。
Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above problems, and as a result, as a material for permeable concrete, cement or a powder mixture containing cement, a powder water reducing agent, a fine aggregate The present inventors have found that the above problem can be solved by using coarse aggregate and water and by specifying the mixing ratio thereof, thereby completing the present invention.

【0006】即ち、本発明は、粗骨材と、該粗骨材に対
する容積比が30〜80%のペースト又はモルタルとからな
る組成物の混練物を型枠に投入して成形し、養生してな
る透水性コンクリートであって、上記ペースト又はモル
タルが、セメント若しくはセメントを含む粉体混合物10
0重量部、細骨材0〜300重量部、減水剤0.1〜3.0重量
部、水20〜40重量部を含み、上記減水剤として、粉末減
水剤を使用することを特徴とする透水性コンクリートで
ある(請求項1)。
That is, according to the present invention, a kneaded product of a composition comprising coarse aggregate and a paste or mortar having a volume ratio of 30 to 80% with respect to the coarse aggregate is put into a mold, molded and cured. Wherein the paste or mortar is cement or a powder mixture 10 containing cement.
0 parts by weight, 0 to 300 parts by weight of fine aggregate, 0.1 to 3.0 parts by weight of a water reducing agent, 20 to 40 parts by weight of water, and as the water reducing agent, a powdered water reducing agent is used. (Claim 1).

【0007】[0007]

【発明の実施の形態】以下、本発明について詳細に説明
する。本発明の透水性コンクリートを構成する材料及び
その配合割合は、次の通りである。 (1)粗骨材 粗骨材としては、粒径2.5〜20mmの砂利、砕石、又はこ
れらの混合物や、軽量骨材が挙げられる。
BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail. The materials constituting the permeable concrete of the present invention and the compounding ratio thereof are as follows. (1) Coarse Aggregate The coarse aggregate includes gravel, crushed stone, a mixture thereof, and lightweight aggregate having a particle size of 2.5 to 20 mm.

【0008】(2)セメント若しくはセメントを含む粉
体混合物 セメントとしては、普通、早強、中庸熱、低熱ポルトラ
ンドセメント等のポルトランドセメントや、ホワイトセ
メント、アルミナセメント、さらには都市ゴミ焼却灰・
下水汚泥焼却灰等の廃棄物を原料として利用したエコセ
メントが挙げられる。セメントを含む粉体混合物は、前
記セメントに、ブレーン比表面積が3000cm2/g以上の高
炉スラグ粉末、フライアッシュ、石灰石粉、珪石粉、シ
リカフューム等の無機質粉末を添加してなるものをい
う。該無機質粉末としては、透水性コンクリートの圧縮
強度等から、高炉スラグ粉末、フライアッシュ及び/又
はシリカフュームが好ましい。なお、セメントを含む粉
体混合物中に占めるセメントの割合は、70重量%以上と
することが好ましい。本発明においては、セメントとし
て、普通ポルトランドセメント又は早強ポルトランドセ
メントを使用することは、早期強度発現性が向上するの
で、好ましいものである。
[0008] (2) Cement or powder mixture containing cement As cement, Portland cement such as Portland cement such as ordinary, fast, medium heat and low heat, white cement, alumina cement, and municipal waste incineration ash
Ecocement using waste such as sewage sludge incineration ash as a raw material can be mentioned. The powder mixture containing cement refers to a mixture obtained by adding an inorganic powder such as blast furnace slag powder having a Blaine specific surface area of 3000 cm 2 / g or more, fly ash, limestone powder, silica stone powder, and silica fume to the cement. As the inorganic powder, blast furnace slag powder, fly ash and / or silica fume are preferable from the viewpoint of compressive strength of permeable concrete. The proportion of cement in the powder mixture containing cement is preferably 70% by weight or more. In the present invention, it is preferable to use ordinary Portland cement or early-strength Portland cement as cement, since the early strength development is improved.

【0009】(3)細骨材 細骨材としては、川砂、海砂、山砂、砕砂、又はこれら
の混合物が挙げられる。細骨材としては、粗骨材の粒径
が5mm以上の場合は、粒径5mm未満、好ましくは2.5mm以
下、より好ましくは1.0mm以下の粒体が用いられ、粗骨
材の粒径が2.5〜5mmの場合は、粒径2.5mm未満、好まし
くは1.5mm以下、より好ましくは0.5mm以下の粒体が用い
られる。細骨材の粒径が粗骨材の粒径に近すぎると、粗
骨材にモルタルが被覆されにくくなり、好ましくない。
(3) Fine aggregate Fine sand includes river sand, sea sand, mountain sand, crushed sand, or a mixture thereof. As the fine aggregate, when the particle size of the coarse aggregate is 5 mm or more, a particle having a particle size of less than 5 mm, preferably 2.5 mm or less, more preferably 1.0 mm or less is used. In the case of 2.5 to 5 mm, particles having a particle size of less than 2.5 mm, preferably 1.5 mm or less, more preferably 0.5 mm or less are used. If the particle size of the fine aggregate is too close to the particle size of the coarse aggregate, it becomes difficult to coat the mortar on the coarse aggregate, which is not preferable.

【0010】細骨材の添加量は、セメント若しくはセメ
ントを含む粉体混合物100重量部に対して、0〜300重量
部であり、好ましくは30〜150重量部である。細骨材を
添加することにより、硬化後の乾燥による収縮を抑制す
ることができる。細骨材の添加量が300重量部を超える
と、混練物の作業性が低く成形等の作業に手間がかかる
うえ、透水性コンクリートの透水係数が小さくなり好ま
しくない。
The amount of the fine aggregate is 0 to 300 parts by weight, preferably 30 to 150 parts by weight, based on 100 parts by weight of the cement or the powder mixture containing the cement. By adding fine aggregate, shrinkage due to drying after curing can be suppressed. If the amount of the fine aggregate exceeds 300 parts by weight, the workability of the kneaded material is low, and the work such as molding is troublesome, and the water permeability of the permeable concrete is undesirably small.

【0011】(4)水 水の量は、セメント若しくはセメントを含む粉体混合物
100重量部に対して、20〜40重量部であり、混練物の作
業性や透水性コンクリートの透水係数及び圧縮強度か
ら、好ましくは25〜40重量部、より好ましくは30重量部
を超え40重量部以下である。水の量が、20重量部未満で
は、ペースト又はモルタルの粘性が高くなり、混練物の
作業性が低く成形等の作業に手間がかかる(例えば、振
動時間が長くなる等)ので好ましくない。水の量が40重
量部を超えると、振動成形時にペースト又はモルタルの
流れ落ちが起きやすく、透水係数が小さくなるので好ま
しくない。
(4) Water The amount of water may be cement or a powder mixture containing cement.
20 to 40 parts by weight, based on 100 parts by weight, from the workability of the kneaded material and the water permeability and compressive strength of the permeable concrete, preferably 25 to 40 parts by weight, more preferably more than 30 parts by weight and more than 40 parts by weight Part or less. If the amount of water is less than 20 parts by weight, the viscosity of the paste or mortar becomes high, the workability of the kneaded material is low, and the work such as molding is troublesome (for example, the vibration time becomes long), which is not preferable. If the amount of water exceeds 40 parts by weight, the paste or mortar tends to run off during vibration molding, and the water permeability is undesirably reduced.

【0012】(5)粉末減水剤 本発明においては粉末減水剤を使用する。本発明におい
ては粉末減水剤を使用することにより、混練物の作業性
が向上し成形等の作業が容易になり、液体減水剤を使用
した場合よりも振動時間を短くすることができる。粉末
減水剤としては、リグニン系、ナフタレンスルホン酸
系、メラミン系、ポリカルボン酸系の粉末減水剤、粉末
AE減水剤、粉末高性能減水剤又は粉末高性能AE減水
剤があげられる。
(5) Powder Water Reducing Agent In the present invention, a powder water reducing agent is used. In the present invention, by using the powder water reducing agent, the workability of the kneaded material is improved, the work such as molding is facilitated, and the vibration time can be shortened as compared with the case where the liquid water reducing agent is used. Examples of the powder water reducing agent include lignin-based, naphthalene sulfonic acid-based, melamine-based, polycarboxylic acid-based powder water-reducing agents, powder AE water-reducing agents, powder high-performance water-reducing agents, and powder high-performance AE water-reducing agents.

【0013】粉末減水剤の添加量は、セメント若しくは
セメントを含む粉体混合物100重量部に対して0.1〜3.0
重量部であり、好ましくは0.5〜2.0重量部である。添加
量が0.1重量部未満では、ペースト又はモルタルの粘性
が高くなり、混練物の作業性が低く成形等の作業に手間
がかかる(例えば、振動時間が長くなる等)ので好まし
くない。一方、3.0重量部を超える量を添加しても混練
物の作業性はほとんど向上せず、コストが高くなる。ま
た、粉末減水剤の添加量が多すぎると、振動成形時にペ
ースト又はモルタルの流れ落ちが起きやすく、透水係数
が小さくなるので好ましくない。
[0013] The amount of the powder water reducing agent is 0.1 to 3.0 parts by weight per 100 parts by weight of cement or a powder mixture containing cement.
Parts by weight, preferably 0.5 to 2.0 parts by weight. If the addition amount is less than 0.1 part by weight, the viscosity of the paste or mortar becomes high, the workability of the kneaded material is low, and the work such as molding is troublesome (for example, the vibration time becomes long), which is not preferable. On the other hand, if the amount exceeds 3.0 parts by weight, the workability of the kneaded material is hardly improved, and the cost increases. On the other hand, if the amount of the powder water reducing agent is too large, the paste or mortar tends to run off during vibration molding, and the water permeability is undesirably reduced.

【0014】(6)粗骨材に対するペースト又はモルタ
ルの容積比 粗骨材に対するペースト又はモルタルの容積比は、粗骨
材100%に対して30〜80%(外割)であり、コスト等か
ら、好ましくは35〜55%(外割)である。ペースト又は
モルタルの容積比が30%未満では、透水性コンクリート
の圧縮強度が低下するので好ましくない。ペースト又は
モルタルの容積比が80%を超えると、透水係数が小さく
なるので好ましくない。
(6) Volume ratio of paste or mortar to coarse aggregate The volume ratio of paste or mortar to coarse aggregate is 30 to 80% (outside ratio) to 100% of coarse aggregate. , Preferably 35 to 55% (outside ratio). When the volume ratio of the paste or the mortar is less than 30%, the compressive strength of the permeable concrete decreases, which is not preferable. If the volume ratio of the paste or mortar exceeds 80%, the water permeability is undesirably reduced.

【0015】混練に用いるミキサは、特に限定するもの
ではなく、パンタイプミキサ、二軸ミキサ等の慣用のミ
キサで混練すれば良い。混練方法としては、材料を一括
してミキサに投入して1分以上混練する方法や、水以外
の材料をミキサに投入して空練りした後に、水を投入し
て1分以上混練する方法等が挙げられる。なお、混練
は、粗骨材に粗骨材以外の材料からなるペースト又はモ
ルタルが被覆した状態の互いに独立した粒体が調製され
るまで混練する。
The mixer used for kneading is not particularly limited, and may be kneaded with a conventional mixer such as a pan-type mixer or a twin-screw mixer. As a kneading method, a method in which materials are collectively put into a mixer and kneaded for 1 minute or more, a method in which materials other than water are put in a mixer and kneaded, and then water is added and kneaded for 1 minute or more, etc. Is mentioned. In the kneading, kneading is performed until individual particles in a state where the coarse aggregate is covered with a paste or mortar made of a material other than the coarse aggregate are prepared.

【0016】混練後、混練物(粗骨材に粗骨材以外の材
料からなるペースト又はモルタルが被覆した状態の互い
に独立した粒体)を所定の型枠に投入し、好ましくは30
00〜8000vpmの振動数の外部振動で振動成形する。振動
数が3000vpm未満では、充分な締め固めを行うことがで
きないおそれがあり、強度が低下するおそれがある。振
動数が8000vpmを超えると、透水係数が小さくなるおそ
れがある。外部振動は、テーブルバイブレーターや型枠
に取り付け可能な振動機等を使用することができる。振
動時間は、おおよそ3〜20秒である。また、振動成形時
に、1〜100kPaの圧力を加えることは、差し支えない。
加圧には、油圧式あるいは空気圧式の加圧装置等を使用
することができる。
After kneading, the kneaded material (independent granules in which coarse aggregate is coated with a paste or mortar made of a material other than coarse aggregate) is poured into a predetermined mold, preferably 30 times.
Vibration molding is performed with external vibration having a frequency of 00 to 8000 vpm. If the frequency is less than 3000 vpm, there is a possibility that sufficient compaction may not be performed, and the strength may be reduced. If the frequency exceeds 8000 vpm, the permeability may decrease. For external vibration, a table vibrator, a vibrator that can be attached to a mold, or the like can be used. Vibration time is approximately 3 to 20 seconds. In addition, applying a pressure of 1 to 100 kPa at the time of vibration molding may be used.
For the pressurization, a hydraulic or pneumatic pressurizing device or the like can be used.

【0017】なお、本発明においては、目的を損なわな
い範囲で、ペースト又はモルタルに、エチレン・酢酸ビ
ニル系共重合体、アクリル系共重合体等のポリマーを添
加することは差し支えない。また、目的を損なわない範
囲で、ベンガラ等の顔料を添加することも差し支えな
い。
In the present invention, a polymer such as an ethylene / vinyl acetate copolymer or an acrylic copolymer may be added to the paste or mortar as long as the purpose is not impaired. Further, a pigment such as red iron oxide may be added as long as the purpose is not impaired.

【0018】[0018]

【試験例】以下、試験例により本発明を説明する。 1.使用材料 以下に示す材料を使用した。 1)セメント;普通ポルトランドセメント(太平洋セメ
ント(株)製) 2)高炉スラグ;ファインセラメント10A(第一セメン
ト(株)製) 3)粉末高性能減水剤;「マイティ100」(商品名)
(花王(株)製) 4)液体高性能減水剤;「マイティ150」(商品名)
(花王(株)製) 5)細骨材;市原産細目山砂(粒径2.5mm以下) 6)粗骨材;A:青梅産砕石5号(粒径13〜20mm) B:青梅産砕石7号(粒径2.5〜5.0mm) 7)水;水道水
Test Examples Hereinafter, the present invention will be described with reference to test examples. 1. Materials used The following materials were used. 1) Cement; ordinary Portland cement (manufactured by Taiheiyo Cement Co., Ltd.) 2) Blast furnace slag; fine cement 10A (manufactured by Daiichi Cement Co., Ltd.) 3) Powder high-performance water reducing agent; "Mighty 100" (brand name)
(Manufactured by Kao Corporation) 4) Liquid high-performance water reducing agent; "Mighty 150" (brand name)
(Manufactured by Kao Corporation) 5) Fine aggregate; Ichihara's Hosomeyama sand (2.5 mm or less in particle size) 6) Coarse aggregate; A: Ome crushed stone No. 5 (particle size: 13-20 mm) B: Ome crushed stone No. 7 (particle size 2.5-5.0mm) 7) Water; tap water

【0019】試験例1〜25 2.透水性コンクリートの配合及び混練 前記材料を、表1に示す配合にしたがって2軸強制練り
ミキサ(0.1m3)に一括投入し、4分間混練し、混練物
(粗骨材に粗骨材以外の材料からなるペースト又はモル
タルが被覆した状態の粒体)を調製した。
Test Examples 1 to 25 2. The blending and kneading the material of permeable concrete, collectively put into biaxial forced kneading mixer according to the formulations shown in Table 1 (0.1 m 3), and kneaded for 4 minutes, the kneaded product (the coarse aggregate than coarse aggregate (Granules coated with a paste or mortar made of a material).

【0020】[0020]

【表1】 [Table 1]

【0021】3.評価 (1)圧縮強度 各混練物を、φ10×20cmの型枠に投入し、空隙率が25%
となるようにテーブルバイブレーターで振動成形(振動
数4500vpm)した。成形後、20℃で2時間前置き後、65
℃で4時間蒸気養生した。脱型後、20℃で14日間水中養
生し、透水性コンクリート供試体を作製した。該供試体
の圧縮強度を「JIS A 1108(コンクリートの圧縮試験方
法)」に準じて測定した。 (2)透水係数 各混練物を、10×10×40cmの型枠に投入し、空隙率が25
%となるようにテーブルバイブレーターで振動成形(振
動数4500vpm)した。成形後、20℃で2時間前置き後、6
5℃で4時間蒸気養生した。脱型後、20℃で14日間水中
養生し、透水性コンクリート供試体を作製した。該供試
体の透水係数を「インターロッキングブロック舗装設計
施工要領 8-3 透水性試験」に準じて測定した。 (3)混練物の作業性及び振動時間 上記(1)及び(2)において、各混練物を型枠に投入
する際の作業性を「◎;非常に良好」、「○;良好」、
「×;悪い」で評価した。また、一部の混練物に対して
は、上記(1)において振動成形(振動数4500vpm)す
る際、所定の空隙率(25%)となるまでの振動時間を測
定した。振動時間は、φ10×20cmの型枠に混練物を3.3k
g投入し、空隙率が25%となるまでの振動時間を測定し
た。それらの結果を表2に示す。
3. Evaluation (1) Compressive strength Each kneaded material was put into a φ10 × 20 cm formwork, and the porosity was 25%.
Vibration molding (vibration frequency 4500 vpm) with a table vibrator so that After molding, pre-place at 20 ° C for 2 hours, 65
Steam cured at 4 ° C. for 4 hours. After demolding, the specimen was cured in water at 20 ° C. for 14 days to prepare a permeable concrete specimen. The compressive strength of the test specimen was measured according to "JIS A 1108 (Method for testing compression of concrete)". (2) Permeability coefficient Each kneaded material is put into a 10 × 10 × 40 cm formwork, and the porosity is 25%.
% By vibration shaping (frequency: 4500 vpm) using a table vibrator. After molding, pre-place at 20 ° C for 2 hours,
Steam curing was performed at 5 ° C. for 4 hours. After demolding, the specimen was cured in water at 20 ° C. for 14 days to prepare a permeable concrete specimen. The permeability of the specimen was measured according to “Interlocking Block Pavement Design and Construction Procedure 8-3 Permeability Test”. (3) Workability and vibration time of kneaded material In the above (1) and (2), the workability at the time of putting each kneaded material into a mold was evaluated as “◎: very good”, “○: good”,
The evaluation was “x; bad”. Further, when a part of the kneaded material was subjected to the vibration molding (frequency of 4500 vpm) in the above (1), the vibration time until a predetermined porosity (25%) was measured. Vibration time is 3.3k for the kneaded material in a φ10 × 20cm mold.
g, and the vibration time until the porosity became 25% was measured. Table 2 shows the results.

【0022】[0022]

【表2】 [Table 2]

【0023】表2から、本発明で規定する透水性コンク
リートは、 1)粗骨材として5号砕石(粒径13〜20mm)を使用した
場合、透水係数が7.0〜9.0cm/sec程度で、圧縮強度が15
〜20N/mm2程度(試験例1〜12) 2)粗骨材として7号砕石(粒径2.5〜5.0mm)を使用し
た場合、透水係数が1.0〜1.3cm/sec程度で、圧縮強度が
23〜25N/mm2程度(試験例13〜15)と、大きな透水係数
及び圧縮強度を有するうえ、混練物の作業性も良好で、
成形等の作業が容易であり、所定の空隙率となるまでの
振動時間も短いことがわかる。一方、本発明で規定する
配合割合から外れる透水性コンクリート(試験例16〜2
2)では、粗骨材として同じ5号砕石を使用した試験例1
〜12の透水性コンクリートと比べて圧縮強度や透水係数
が低かった。さらに、液体高性能減水剤を使用した試験
例23〜25の透水性コンクリートでは、混練物の作業性が
劣るうえ、所定の空隙率となるまでの振動時間も長かっ
た。
From Table 2, the permeable concrete specified in the present invention is as follows: 1) When crushed stone No. 5 (grain size 13-20 mm) is used as coarse aggregate, the permeability is 7.0-9.0 cm / sec. Compressive strength is 15
~20N / mm 2 approximately (Test Example 1-12) 2) When using the No. 7 crushed stone as coarse aggregate (particle size 2.5 to 5.0 mm), hydraulic conductivity of about 1.0~1.3cm / sec, compressive strength
23~25N / mm 2 about the (Test Example 13 to 15), after having a large permeability and compressive strength, workability of the kneaded material was good,
It can be seen that work such as molding is easy, and the vibration time until a predetermined porosity is obtained is short. On the other hand, the permeable concrete out of the mixing ratio specified in the present invention (Test Examples 16 to 2)
In 2), Test Example 1 using the same crushed stone No. 5 as coarse aggregate
Compressive strength and coefficient of permeability were lower than that of ~ 12 permeable concrete. Furthermore, in the water-permeable concretes of Test Examples 23 to 25 using the liquid high-performance water reducing agent, the workability of the kneaded material was inferior, and the vibration time until reaching the predetermined porosity was long.

【0024】[0024]

【発明の効果】以上説明したように、本発明の透水性コ
ンクリートは、大きな透水係数及び圧縮強度を有するも
のであり、道路舗装、道路の側壁、河川の護岸等の種々
の用途に用いることができる。また、本発明の透水性コ
ンクリートでは、混練物の作業性が良好であり成形等の
作業も容易である。したがって、本発明の透水性コンク
リートでは、透水性コンクリート製品の製造の効率を向
上させることができる。
As described above, the permeable concrete of the present invention has a large water permeability and compressive strength, and can be used for various applications such as road pavement, road side walls, and river bank protection. it can. Moreover, in the water-permeable concrete of the present invention, the workability of the kneaded material is good, and the work such as molding is easy. Therefore, in the permeable concrete of the present invention, the efficiency of the production of the permeable concrete product can be improved.

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 FI テーマコート゛(参考) (C04B 28/00 C04B 14:06 Z 14:02 14:28 14:06 18:08 Z 14:28 18:14 A 18:08 22:06 A 18:14 24:18 A 22:06 24:22 A 24:18 24:30 B 24:22 24:26 E 24:30 H 24:26 24:04 14:02 A 24:04 Z 14:02 24:26 C D 24:26 111:00 ) B28B 1/08 B 111:00 (72)発明者 佐藤 達三 千葉県佐倉市大作2−4−2 太平洋セメ ント株式会社中央研究所内 Fターム(参考) 2D018 EA01 2D051 AA02 AD07 AF01 AF02 AF04 AF05 AF09 AG09 AH03 EA06 EB04 EB06 4G012 PA02 PA04 PA10 PA27 PA29 PB04 PB16 PB23 PB25 PB30 PB31 PB32 PB35 PC01 PC02 PC03 PC04 PC11 PE02 PE04 PE07 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) (C04B 28/00 C04B 14:06 Z 14:02 14:28 14:06 18:08 Z 14:28 18 : 14 A 18:08 22:06 A 18:14 24:18 A 22:06 24:22 A 24:18 24:30 B 24:22 24:26 E 24:30 H 24:26 24:04 14: 02A 24:04 Z 14:02 24:26 CD 24:26 111: 00) B28B 1/08 B 111: 00 (72) Inventor Tatsuzo Sato 2-4-2 Daisaku, Sakura-shi, Chiba Pref. Central Research Laboratory F-term (reference) 2D018 EA01 2D051 AA02 AD07 AF01 AF02 AF04 AF05 AF09 AG09 AH03 EA06 EB04 EB06 4G012 PA02 PA04 PA10 PA27 PA29 PB04 PB16 PB23 PB25 PB30 PB31 PB32 PB35 PC01 PC02 PC02 PE04 PC07

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 粗骨材と、該粗骨材に対する容積比が30
〜80%のペースト又はモルタルとからなる組成物の混練
物を型枠に投入して成形し、養生してなる透水性コンク
リートであって、 上記ペースト又はモルタルが、セメント若しくはセメン
トを含む粉体混合物100重量部、細骨材0〜300重量部、
減水剤0.1〜3.0重量部、水20〜40重量部を含み、 上記減水剤として、粉末減水剤を使用することを特徴と
する透水性コンクリート。
1. The method of claim 1, wherein the volume ratio of the coarse aggregate to the coarse aggregate is 30
A kneaded product of a composition comprising 〜80% paste or mortar, which is poured into a mold, molded and cured, wherein the paste or mortar is cement or a powder mixture containing cement. 100 parts by weight, fine aggregate 0-300 parts by weight,
A water-permeable concrete comprising 0.1 to 3.0 parts by weight of a water reducing agent and 20 to 40 parts by weight of water, wherein a powdered water reducing agent is used as the water reducing agent.
【請求項2】 上記セメント若しくはセメントを含む粉
体混合物が、70〜100重量%のポルトランドセメント
と、30〜0重量%の高炉スラグ粉末、フライアッシュ、
シリカフュームから選ばれる1種以上の粉末からなる請
求項1に記載の透水性コンクリート。
2. The cement or a powder mixture containing cement, comprising 70-100% by weight of Portland cement, 30-0% by weight of blast furnace slag powder, fly ash,
The permeable concrete according to claim 1, comprising one or more powders selected from silica fume.
JP2001164590A 2001-05-31 2001-05-31 Water permeable concrete Pending JP2002356358A (en)

Priority Applications (1)

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Family

ID=19007398

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Application Number Title Priority Date Filing Date
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Country Link
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011037646A (en) * 2009-08-07 2011-02-24 Akita Univ Porous concrete and method for manufacturing the same
CN108821678A (en) * 2018-06-21 2018-11-16 苏州混凝土水泥制品研究院有限公司 A kind of water-permeable cement concrete and preparation method thereof
CN112500084A (en) * 2020-12-22 2021-03-16 浙江天地环保科技股份有限公司 Ecological concrete water permeable brick based on fly ash lightweight aggregate and preparation method thereof
CN112851252A (en) * 2021-02-02 2021-05-28 党庆利 Industrial waste pervious concrete and preparation method thereof
CN115536338A (en) * 2022-10-08 2022-12-30 北京市高强混凝土有限责任公司 High-flow-state pervious concrete composition and high-flow-state pervious concrete

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JPH09273105A (en) * 1996-04-08 1997-10-21 Nippon Cement Co Ltd Cast-in-place water permeable concrete pavement and its execution method
JPH1087377A (en) * 1996-09-13 1998-04-07 Nippon Cement Co Ltd Fiber reinforced porous concrete molding and its production
JPH10252006A (en) * 1997-03-10 1998-09-22 Nippon Cement Co Ltd In-situ placing water-permeable concrete pavement
JP2000230214A (en) * 1998-12-08 2000-08-22 Taiheiyo Cement Corp Cast-in-place water-permeable concrete pavement
JP2002081009A (en) * 2000-06-26 2002-03-22 Taiheiyo Cement Corp Permeable concrete product and pavement for carriageway

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Publication number Priority date Publication date Assignee Title
JPH0987053A (en) * 1995-09-27 1997-03-31 Nippon Cement Co Ltd Instantaneously demoldable porous concrete molding and its production
JPH09273105A (en) * 1996-04-08 1997-10-21 Nippon Cement Co Ltd Cast-in-place water permeable concrete pavement and its execution method
JPH1087377A (en) * 1996-09-13 1998-04-07 Nippon Cement Co Ltd Fiber reinforced porous concrete molding and its production
JPH10252006A (en) * 1997-03-10 1998-09-22 Nippon Cement Co Ltd In-situ placing water-permeable concrete pavement
JP2000230214A (en) * 1998-12-08 2000-08-22 Taiheiyo Cement Corp Cast-in-place water-permeable concrete pavement
JP2002081009A (en) * 2000-06-26 2002-03-22 Taiheiyo Cement Corp Permeable concrete product and pavement for carriageway

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011037646A (en) * 2009-08-07 2011-02-24 Akita Univ Porous concrete and method for manufacturing the same
CN108821678A (en) * 2018-06-21 2018-11-16 苏州混凝土水泥制品研究院有限公司 A kind of water-permeable cement concrete and preparation method thereof
CN108821678B (en) * 2018-06-21 2020-12-25 苏州混凝土水泥制品研究院有限公司 Permeable cement concrete and preparation method thereof
CN112500084A (en) * 2020-12-22 2021-03-16 浙江天地环保科技股份有限公司 Ecological concrete water permeable brick based on fly ash lightweight aggregate and preparation method thereof
CN112851252A (en) * 2021-02-02 2021-05-28 党庆利 Industrial waste pervious concrete and preparation method thereof
CN115536338A (en) * 2022-10-08 2022-12-30 北京市高强混凝土有限责任公司 High-flow-state pervious concrete composition and high-flow-state pervious concrete

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