JP2012046981A - Water permeable concrete plate - Google Patents

Water permeable concrete plate Download PDF

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JP2012046981A
JP2012046981A JP2010190773A JP2010190773A JP2012046981A JP 2012046981 A JP2012046981 A JP 2012046981A JP 2010190773 A JP2010190773 A JP 2010190773A JP 2010190773 A JP2010190773 A JP 2010190773A JP 2012046981 A JP2012046981 A JP 2012046981A
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water
base layer
hole
layer part
surface layer
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Nobuaki Takamura
宣明 高村
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Takamura Sogyo Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a water permeable concrete plate comprising two layers of a permeable surface layer part and an impermeable base layer part, which has a high flexural strength hardly affected by through holes bored in the base layer part, a high drainage capacity due to the through holes, and enhanced bondability between the surface layer part and the base layer part.SOLUTION: A water permeable concrete plate comprises two layers: a permeable surface layer part (1), and a base layer part (2) made of concrete. The base layer part (2) has an embedded reinforcement material (3) and a number of bored through holes (21) of which upper hole diameter is larger than a lower hole diameter. The permeable surface layer part (1) is stacked on a top face (2a) of the base layer part (2) and in the through holes (21).

Description

本発明は、雨水を透水する透水性コンクリート板に関し、特に、雨水の透水性と車の走行に関して充分な強度を有する透水性コンクリート板に関する。   The present invention relates to a permeable concrete plate that allows rainwater to pass through, and more particularly, to a permeable concrete plate having sufficient strength with respect to the permeability of rainwater and the running of a vehicle.

従来、透水性を有するコンクリート板としては、単に粗骨材をセメント等のバインダーで結合した1層又は2層のポーラスコンクリート板、あるいは上部に透水性多孔質の表層部と、下部にコンクリート製で非透水性の基層部とから成る透水性コンクリート板等が提案されている。   Conventionally, as a concrete board having water permeability, it is made of a single-layer or two-layer porous concrete board in which coarse aggregates are bonded with a binder such as cement, or a water-permeable porous surface layer on the upper part and a concrete part on the lower part. A water-permeable concrete board composed of a water-impermeable base layer has been proposed.

例えば、特許文献1(特開平09−87053号公報)では、粗骨材にコンシステンシーがペーストフロー又はモルタルフローとして150〜300mmのペースト又はモルタルを平均厚さ1〜5mmに被覆してなる粒体が該ペースト又はモルタル部分を介して結合されている曲げ強度が5.0〜7.0N/mmでかつ、透水係数が0.3〜3.0cm/secの即脱ポーラスコンクリート成形体が開示されている。 For example, in Patent Document 1 (Japanese Patent Application Laid-Open No. 09-87053), a granular material obtained by coating a coarse aggregate with a paste or mortar having a consistency of 150 to 300 mm as a paste flow or mortar flow to an average thickness of 1 to 5 mm. Is a porous concrete molded body with a flexural strength of 5.0 to 7.0 N / mm 2 and a water permeability of 0.3 to 3.0 cm / sec. Has been.

また、透水性コンクリートと非透水性コンクリートとから成る透水性コンクリート板として、特許文献2(特開2001−164502号公報)では、透水性コンクリート多孔質層1と非透水性コンクリート基層2とよりなる2層構造プレキャストコンクリート舗装版であって、コンクリート多孔質層1は、ポルトランドセメント100重量部に、400〜600重量部の粒径3〜12mmの小粒径粗骨材、0〜100重量部の粒径1mm以下の細骨材又は該細骨材と粉体との混合物又は粉体、0.1〜1重量部の増粘剤、0.3〜15重量部の有機ポリマー、0〜2重量部の減水剤、および20〜50重量部の水を少なくとも混合することによって構成され、多孔質コンクリート層1の空隙率、透水係数、曲げ強度が、それぞれ、10〜25%、10−2cm/s以上、3N/mm以上であるプレキャストコンクリート舗装版が開示されている。 Moreover, as a water-permeable concrete board which consists of water-permeable concrete and water-impermeable concrete, in patent document 2 (Unexamined-Japanese-Patent No. 2001-164502), it consists of the water-permeable concrete porous layer 1 and the water-impermeable concrete base layer 2. A two-layer precast concrete pavement plate, in which a porous concrete layer 1 is composed of 100 to 100 parts by weight of Portland cement, 400 to 600 parts by weight of a coarse particle having a particle size of 3 to 12 mm, and 0 to 100 parts by weight. Fine aggregate having a particle size of 1 mm or less or a mixture or powder of the fine aggregate and powder, 0.1 to 1 part by weight thickener, 0.3 to 15 parts by weight organic polymer, 0 to 2 parts by weight Part of the water reducing agent and 20 to 50 parts by weight of water are mixed, and the porosity, water permeability, and bending strength of the porous concrete layer 1 are 10 to 2, respectively. %, 10 -2 cm / s or more, precast concrete pavement is disclosed is 3N / mm 2 or more.

更に、特許文献3(特開2007−290179号公報)では、透水性蓋の製造方法が開示されており、その透水性蓋の製造方法は、連続空隙を有する多孔質コンクリート板からなる表層と、貫通孔が形成されたポリマーセメントモルタルからなる基層とを一体化してなる透水性蓋の製造方法であって、内面の底面から上方に向かって前記貫通孔を形成するための凸部が設けられた型枠と、自己流動性を有するポリマーセメントモルタルと、予め形成された、接合面の前記型枠の凸部に対応する位置に凹部が設けられた多孔質コンクリート板とを用い、前記型枠に前記ポリマーセメントモルタルを打設した後、その上方から、前記多孔質コンクリート板を、前記型枠の凸部上端が該多孔質コンクリート板の凹部に嵌合し、且つ、該嵌合する部分を除く接合面では多孔質コンクリート板の連続空隙に前記ポリマーセメントモルタルが浸透して接合層が形成されるように載置し、前記ポリマーセメントモルタルが硬化した後、脱型することが開示されている。この製造方法による透水性蓋においては、透水性を維持しつつ、基層によって全体としての曲げ強度が確保されるとしている。   Furthermore, in patent document 3 (Unexamined-Japanese-Patent No. 2007-290179), the manufacturing method of a water-permeable lid is disclosed, The manufacturing method of the water-permeable lid is the surface layer which consists of a porous concrete board which has a continuous space | gap, A method for producing a water-permeable lid formed by integrating a base layer made of a polymer cement mortar with a through hole formed therein, wherein a convex portion is provided for forming the through hole upward from the bottom surface of the inner surface. Using a mold, a polymer cement mortar having self-fluidity, and a porous concrete plate formed in advance at a position corresponding to the protrusion of the mold on the joining surface, the mold After placing the polymer cement mortar, from above the porous concrete plate, the upper end of the convex portion of the mold is fitted into the concave portion of the porous concrete plate, and the fitting portion It is disclosed that the polymer cement mortar permeates into the continuous voids of the porous concrete plate at the joint surface except for a mounting layer to form a joint layer, and the polymer cement mortar is hardened and then demolded. Yes. In the water-permeable lid by this manufacturing method, the overall bending strength is secured by the base layer while maintaining water permeability.

特開平09−87053号公報JP 09-87053 A 特開2001−164502号公報JP 2001-164502 A 特開2007−290179号公報JP 2007-290179 A

しかしながら、上記従来の単に骨材とセメント等を結合した1層又は2層から成る透水性コンクリート板においては、透水性を高めるため、全体が多孔質性に形成したコンクリート板であり、いくら材質的に選択したところで、その強度が劣ってしまう点は免れず、その強度的な問題点から使用用途が限られ、特に車輌の走行する場所で側溝やマンホールの蓋等には適さないという問題点があった。このような問題点を有するものとして特許文献1に示された技術では全体がポーラス成形体であるため、依然として曲げ強度が弱い。従って、単に車道の上に並べて使用する分には良いとしても、側溝やマンホール等の両端支持の状態で使用する場合には、より重量の大きい車の走行に対し曲げ強度が不足して使用できない問題点を有していた。   However, in the conventional water-permeable concrete plate composed of one or two layers, in which aggregate and cement are combined, the whole is a porous concrete plate in order to increase the water permeability. However, its strength is inferior, and its use is limited due to its strength problems, and it is not suitable for side grooves or manhole covers, especially in places where vehicles run. there were. In the technique disclosed in Patent Document 1 as having such a problem, since the whole is a porous molded body, the bending strength is still weak. Therefore, even if it is sufficient to use it side by side on the roadway, when it is used in a state of supporting both ends such as side grooves and manholes, it cannot be used due to insufficient bending strength with respect to traveling of a heavy vehicle. Had problems.

他方、特許文献2及び特許文献3では、曲げ強度と透水性を高めるために、透水性の表層と非透水性の基層との2層とし、基層によって曲げ強度を高めた構成としている。しかしながら、これらの基層においては、基層が非透水性のままでは全体的に透水性のコンクリート板とならないため、基層には部分的に貫通穴を穿設させているが、この貫通穴によって曲げ強度が低下し、所定の曲げ強度を確保するには穴径や穴数が制限される。即ち、特許文献2、3に示された貫通穴においては、単にストレート穴や特許文献3のように下方を広げたテーパー状穴であり、このような形状の貫通穴では、基層の曲げ強度を高めるのに貫通穴の穴径を小さくすると、貫通穴の上部の穴径も小さいため、表層から浸透した雨水は基層の貫通穴に導入され難く、貫通穴から効率よく排水できない問題点を有していた。また、表層と基層とが単に積層されただけのため、車の走行等で両層が分離し易い問題を有していた。   On the other hand, in patent document 2 and patent document 3, in order to raise bending strength and water permeability, it is set as the structure which made it 2 layers of a water-permeable surface layer and a water-impermeable base layer, and raised bending strength by the base layer. However, in these base layers, if the base layer remains impermeable, it will not be a water-permeable concrete board as a whole. Therefore, through holes are partially drilled in the base layer. The hole diameter and the number of holes are limited to ensure a predetermined bending strength. That is, the through holes shown in Patent Documents 2 and 3 are simply straight holes or tapered holes widened downward as in Patent Document 3, and in such a through hole, the bending strength of the base layer is increased. When the hole diameter of the through hole is reduced to increase the diameter of the upper part of the through hole, the rainwater that has penetrated from the surface layer is difficult to be introduced into the through hole of the base layer and has a problem that it cannot be efficiently drained from the through hole. It was. In addition, since the surface layer and the base layer are simply laminated, there is a problem that the two layers are easily separated when the vehicle is driven.

本発明は、上記問題点に鑑み、透水性の表層部と非透水性の基層部との2層であっても、その曲げ強度が基層部に穿設した貫通穴に殆ど影響されず、高い強度を保持し、且つ、貫通穴による排水性及び表層部と基層部との接合性も高めた透水性コンクリート板を提供することを目的とする。   In view of the above problems, the present invention has a high bending strength even if it is composed of a water-permeable surface layer portion and a non-water-permeable base layer portion, and is hardly affected by the through-holes formed in the base layer portion. An object of the present invention is to provide a water-permeable concrete plate that retains strength and has improved drainage by a through-hole and bonding properties between a surface layer portion and a base layer portion.

上記目的を達成するため、本発明は、透水性の表層部(1)と、非透水性でコンクリート製の基層部(2)との2層から成る透水性コンクリート板において、前記基層部(2)には、補強材(3)を埋設させると共に、多数の貫通穴(21)を穿設させ、且つ、該貫通穴(21)が、その上部の穴径を下部の穴径よりも大きく形成させ、前記透水性の表層部(1)を前記基層部(2)の上面(2a)及び前記貫通穴(21)内に積層させたことを特徴とする。   In order to achieve the above object, the present invention relates to a water-permeable concrete plate comprising two layers of a water-permeable surface layer portion (1) and a non-water-permeable concrete base layer portion (2). ) Is embedded with a reinforcing material (3) and a number of through holes (21), and the through holes (21) are formed so that the upper hole diameter is larger than the lower hole diameter. The water-permeable surface layer portion (1) is laminated in the upper surface (2a) of the base layer portion (2) and the through hole (21).

また、前記貫通穴(21)が、その上部を広くくり貫いた凹部(21a)と、その凹部(21a)の底部に穿設した細穴(21b)とから成るのが好ましい。   Further, it is preferable that the through hole (21) is composed of a concave portion (21a) which is deeply cut out at an upper portion thereof and a narrow hole (21b) which is formed at the bottom portion of the concave portion (21a).

また、前記補強材(3)が、前記基層部(2)の板厚中央より下部に埋設するのが好ましい。   Moreover, it is preferable that the said reinforcing material (3) is embed | buried under the plate | board thickness center of the said base layer part (2).

本発明の内容を更に詳しく説明すると、本発明の表層部を成形するポーラスコンクリートは、小粒径の粗骨材に少なくともセメントを添加して多孔質層に成形したものであり、これは連続した空隙を形成し透水性を付与した層である。この際に使用する小粒径の粗骨材としては、川砂や砕石あるいは、天然又は人工の骨材が使用され、特には砕石が一般的に必要な粒径のものが大量に入手できるため好ましい。   Describing the contents of the present invention in more detail, the porous concrete for forming the surface layer portion of the present invention is formed into a porous layer by adding at least cement to coarse aggregate having a small particle size, which is continuous. It is the layer which formed the space | gap and provided water permeability. As the coarse aggregate having a small particle size used in this case, river sand, crushed stone, or natural or artificial aggregate is used, and in particular, crushed stone is generally preferable because it can be obtained in large quantities. .

また、表層部に使用する小粒径の粗骨材の粒径としては、2mm〜10mm程度のものが使用され、この粗骨材とセメントとの割合は、粗骨材100重量部にセメント20〜50重量部を混合して表層部(1)を成形させるとよい。更に、粗骨材の結合性と空隙率を高めるために、セメントの他に粗骨材よりも小径な細骨材や粉体を添加するのが好ましく、特に細骨材は、粗骨材の半分以下の粒径のものを使用するのが小粒径粗骨材の結合性を高めるのにより好ましい。   Moreover, as a particle size of the coarse aggregate of a small particle size used for a surface layer part, a thing of about 2 mm-10 mm is used, and the ratio of this coarse aggregate and cement is cement 20 to 100 weight part of coarse aggregate. It is good to mix -50 weight part and shape | mold a surface layer part (1). Further, in order to increase the binding and porosity of the coarse aggregate, it is preferable to add fine aggregate or powder having a smaller diameter than the coarse aggregate in addition to the cement. It is more preferable to use a particle having a particle size of half or less in order to enhance the binding property of the small particle size coarse aggregate.

また、細骨材としては、例えば川砂であり、粉体としては例えばフライアッシュ,無機質粉体等である。   The fine aggregate is river sand, for example, and the powder is fly ash, inorganic powder, or the like.

本発明の基層部は、全体がコンクリート製で非透水性のものであり、この基層部には、内部に補強材として網目状に組んだ鉄筋やエキスパンドメタル等が埋設される。この埋設箇所としては、基層部の下面側近くに埋設するのが曲げ強度を高めるため好ましい。   The base layer portion of the present invention is made entirely of concrete and water-impermeable, and in this base layer portion, reinforcing bars, expanded metal, and the like are embedded as a reinforcing material. As this embedding location, it is preferable to embed near the lower surface side of the base layer portion in order to increase the bending strength.

また、基層部には、多数貫通穴を穿設させている。この貫通穴は、その上部の穴径が下部の穴径より大きく形成し、この貫通穴内に表層部の下部が入り易くさせている。   Further, a large number of through holes are formed in the base layer portion. The through hole is formed such that the upper hole diameter is larger than the lower hole diameter, and the lower part of the surface layer portion can easily enter the through hole.

本発明では、表層部(1)から浸透した雨水は、雨水が下方の基層部(2)に流れ込み、基層部(2)では上部の穴径を大きくした貫通穴(21)が漏斗の役目を成して、表層部(1)から流出した雨水を集めながら貫通穴(21)から効率よく流出させられる。   In the present invention, the rainwater that has permeated from the surface layer portion (1) flows into the lower base layer portion (2), and in the base layer portion (2), the through hole (21) having a larger upper hole diameter serves as a funnel. Thus, the rainwater flowing out from the surface layer portion (1) is collected and efficiently drained from the through hole (21).

また、本発明では、基層部(2)に設けた貫通穴(21)は、その上部の穴径を大きく、広くくり貫いた凹部(21a)に形成しているため、基層部(2)の上面の表面積が大きくなり、基層部(2)と表層部(1)との接合が極めて強く、しかも表層部(1)の一部が凹部(21a)内に入り込んだ状態で積層しているので、車輌等の走行で表層部(1)が横方向に引張られても、表層部(1)が基層部(2)からずれることもない。   Further, in the present invention, the through hole (21) provided in the base layer portion (2) has a large hole diameter in the upper portion and is formed in a recessed portion (21a) that is widely hollowed. Since the surface area of the upper surface is increased, the base layer part (2) and the surface layer part (1) are very strongly bonded, and the surface layer part (1) is partially laminated into the recess (21a). Even when the surface layer portion (1) is pulled in the lateral direction during traveling of the vehicle or the like, the surface layer portion (1) is not displaced from the base layer portion (2).

また、本発明では、表層部(1)と基層部(2)とが入り込んだ状態で一体的に結合し、基層部(2)に穿設した貫通穴(21)が、下部の穴径を大きく、下部は小さな穴径としてあり、しかも、基層部(2)に補強材(3)を埋設しているため、表層部(1)側から加わる荷重に対して、全体の曲げ強度が極めて高く、車道や河川等の使用に充分使用できる。   In the present invention, the surface layer (1) and the base layer (2) are joined together in a state of entering, and the through hole (21) formed in the base layer (2) has a lower hole diameter. The lower part has a small hole diameter, and since the reinforcing material (3) is embedded in the base layer part (2), the overall bending strength is extremely high with respect to the load applied from the surface layer part (1) side. Can be used for roadways and rivers.

本発明の実施形態を示す断面図である。It is sectional drawing which shows embodiment of this invention. 本発明の実施形態を示す一部切欠き平面図である。It is a partially notched top view which shows embodiment of this invention. 本発明の実施形態を示す枠体を装着した基層部の断面図である。It is sectional drawing of the base layer part equipped with the frame which shows embodiment of this invention. 本発明の他の実施形態を示す枠体を装着した基層部の断面図である。It is sectional drawing of the base layer part which mounted | wore with the frame which shows other embodiment of this invention.

以下、本発明の実施形態につき、図を基に説明する。図1、図2において、(1)はポーラスコンクリートの表層部である。この表層部(1)は、小粒径の粗骨材に、セメント系バインダーと水、あるは必要に応じてセメントの他に細骨材や粉体等を添加して混合し、それを所定の加圧振動により粗骨材をセメント系バインダーで結合させて、透水性を有する層に形成したものである。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 and 2, (1) is a surface layer portion of porous concrete. This surface layer portion (1) is made by adding and mixing a cement-based binder and water, or if necessary, fine aggregate or powder in addition to cement to coarse aggregate with a small particle size. The coarse aggregate is bonded with a cement-type binder by the pressure vibration, and formed into a layer having water permeability.

この表層部(1)を形成する小粒径の粗骨材としては、例えば川砂,砕石等であり、その粒径は、2〜10mmの範囲が好ましく、特には、JIS7号砕石(粒径2.5mm〜5mm)のものが好適である。   The coarse aggregate having a small particle size forming the surface layer portion (1) is, for example, river sand, crushed stone, etc., and the particle size is preferably in the range of 2 to 10 mm, and in particular, JIS No. 7 crushed stone (particle size 2 (5 mm to 5 mm) is preferable.

表層部(1)の粗骨材を高強度の多孔質層に形成するためには、少なくとも、粗骨材とセメント系バインダーを混練して成形する必要がある。このセメント系バインダーとしては、セメントモルタルやこれに加える混和剤として有機ポリマー、例えばポリエステル樹脂,エポキシ樹脂等の液状ポリマーが使用され、これらの添加量としてはセメント100重量部当り5〜10重量部を目安に添加すればよい。   In order to form the coarse aggregate of the surface layer portion (1) into a high-strength porous layer, it is necessary to mix and form at least the coarse aggregate and the cement-based binder. As the cement binder, an organic polymer such as a cement mortar or an admixture to be added thereto, for example, a liquid polymer such as a polyester resin or an epoxy resin is used, and the amount added is 5 to 10 parts by weight per 100 parts by weight of cement. What is necessary is just to add to a standard.

更に表層部(1)の多孔質層を形成するためには、上記のセメント系バインダーに加える水の量を調整する必要がある。この水の量が多いとセメント系バインダーのペーストが粗骨材間に密集し空隙間が形成されず、他方、水の量が少ないと、良好なペースト状とならず粗骨材を結合することができない。従って、水の量は粗骨材が強く結合し良好な空隙間を形成する最小量を加えるのが好ましい。   Furthermore, in order to form the porous layer of the surface layer portion (1), it is necessary to adjust the amount of water added to the cement binder. If the amount of water is large, the cement-based binder paste is densely packed between the coarse aggregates, and no gaps are formed. On the other hand, if the amount of water is small, the paste is not formed into a good paste and binds the coarse aggregate. I can't. Therefore, it is preferable to add the minimum amount of water so that the coarse aggregate is strongly bonded to form a good air gap.

(2)はコンクリート製の基層部であり、表層部(1)の下部に位置する層である。この基層部(2)には、多数の貫通穴(21)が穿設されている。この貫通穴(21)は、図3及び図4に示すように、上部の穴径を下部の穴径よりも大きく形成させている。この貫通穴(21)の形状として図3では、貫通穴(21)の縦断面形状が、上部が広く湾状にくり貫いた凹部(21a)と、その凹部(21a)の底部に細穴(21b)に形成させている。従って、基層部(2)の上に積層する表層部(1)は、基層部(2)の上面(2a)と貫通穴(21)の凹部(21a)内に積層させている。これにより、表層部(1)と基層部(2)との接合面積が大きくなり、結合が強く、両者が分離することもない。   (2) is a concrete base layer part, which is a layer located in the lower part of the surface layer part (1). A number of through holes (21) are formed in the base layer portion (2). As shown in FIGS. 3 and 4, the through hole (21) is formed such that the upper hole diameter is larger than the lower hole diameter. As the shape of the through hole (21), in FIG. 3, the longitudinal cross-sectional shape of the through hole (21) is a concave portion (21a) whose upper portion is wide and hollow, and a narrow hole (21a) at the bottom of the concave portion (21a). 21b). Therefore, the surface layer portion (1) laminated on the base layer portion (2) is laminated in the upper surface (2a) of the base layer portion (2) and the recess (21a) of the through hole (21). Thereby, the joining area of surface layer part (1) and base layer part (2) becomes large, bond is strong, and both do not separate.

また、図4においては、貫通穴(21)の縦断面形状が、上部をラッパ状又はV字状の凹部(21a)に大きく穿設し、その底部に細穴(21b)を穿設し、この凹部(21a)と細穴(21b)とで、貫通穴(21)を形成している。このように形成した貫通穴(21)においては、上部の表層部(1)から流出した雨水の殆どが、貫通穴(21)上部の凹部(21a)内に効率よく集められ、それが下部の細穴(21b)から排出される。このことは貫通穴(21)の上部の凹部(21a)が漏斗の役目となり、雨水を下部の細穴(21b)に導入するのである。   Also, in FIG. 4, the through hole (21) has a longitudinal cross-sectional shape in which the upper part is greatly drilled in a trumpet-shaped or V-shaped recess (21a), and a narrow hole (21b) is drilled in the bottom. The recess (21a) and the narrow hole (21b) form a through hole (21). In the through hole (21) thus formed, most of the rainwater flowing out from the upper surface layer (1) is efficiently collected in the recess (21a) at the upper part of the through hole (21). It is discharged from the narrow hole (21b). This means that the recess (21a) at the top of the through hole (21) serves as a funnel, and rainwater is introduced into the narrow hole (21b) at the bottom.

(3)は基層部(2)に埋設した補強材であり、この補強材(3)としては、網目状に組んだ鉄筋やエキスパンド等が使用され、その防錆処理としてエポキシ樹脂塗装が好ましい。また、補強材(3)は基層部(2)の板厚中央より下部で下面近くに埋設すると曲げ強度が高いものとなる。尚、補強材(3)はエポキシ樹脂塗料の防錆処理を施すのが好ましい。   (3) is a reinforcing material embedded in the base layer portion (2). As the reinforcing material (3), rebars or expands assembled in a mesh shape are used, and epoxy resin coating is preferred as the rust prevention treatment. Further, when the reinforcing material (3) is embedded near the lower surface below the center of the thickness of the base layer portion (2), the bending strength becomes high. The reinforcing material (3) is preferably subjected to an antirust treatment of the epoxy resin paint.

以下、実施例により本発明を説明する。   Hereinafter, the present invention will be described by way of examples.

板厚40mm、横幅800mm、縦幅400mmの四角形状で、上部の穴径40mm、下部の穴径10mmの貫通穴(21)を50mmピッチ間隔で多数穿設すると共に、補強材(3)を埋設したコンクリート製の基層部(2)を成形したものを予め用意し、次いで、セメント5.75Kg、粒径3mmの粗砕石39.23Kg、川砂の細骨材1.25Kg、水2.5Kgを混合し、上記基層部(2)の上に打設し加圧振動させ、厚さ30mmの表層部(1)を積層させ、本発明の透水性コンクリート板を得た。   A large number of through-holes (21) having a plate thickness of 40 mm, a horizontal width of 800 mm, and a vertical width of 400 mm with an upper hole diameter of 40 mm and a lower hole diameter of 10 mm are formed at 50 mm pitch intervals, and a reinforcing material (3) is embedded. A concrete base layer (2) molded in advance is prepared in advance, and then mixed with 5.75 kg of cement, 39.23 kg of coarse crushed stone with a particle size of 3 mm, 1.25 kg of fine aggregate of river sand, and 2.5 kg of water. Then, it was placed on the base layer portion (2) and subjected to pressure vibration, and the surface layer portion (1) having a thickness of 30 mm was laminated to obtain a water-permeable concrete plate of the present invention.

この透水性コンクリート板に降雨量1時間当り20mm相当の散水をしたところ、表層部(1)の上面に水溜りができず次々と透水し下部の貫通穴(21)から散水が排水された。また、この透水性コンクリート板を幅300mmの側溝の蓋として使用し、その上を10tonの車輌を走行させたところ、透水性コンクリート板には何の変形も見られなかった。   When the water permeable concrete board was sprayed with water equivalent to 20 mm per hour of rainfall, water could not be accumulated on the upper surface of the surface layer part (1), and water was passed through one after another, and water was drained from the lower through hole (21). Moreover, when this water-permeable concrete board was used as a lid for a side groove having a width of 300 mm and a vehicle of 10 tons was run thereon, no deformation was seen in the water-permeable concrete board.

1 表層部
2 基層部
2a 上面
21 貫通穴
21a 凹部
21b 細穴
3 補強材
1 Surface layer part 2 Base layer part
2a Top view
21 Through hole
21a recess
21b Narrow hole 3 Reinforcing material

Claims (3)

透水性の表層部(1)と、非透水性でコンクリート製の基層部(2)との2層から成る透水性コンクリート板において、前記基層部(2)には、補強材(3)を埋設させると共に、多数の貫通穴(21)を穿設させ、且つ、該貫通穴(21)が、その上部の穴径を下部の穴径よりも大きく形成させ、前記透水性の表層部(1)を前記基層部(2)の上面(2a)及び前記貫通穴(21)内に積層させたことを特徴とする透水性コンクリート板。   In a water-permeable concrete plate comprising two layers of a water-permeable surface layer portion (1) and a non-water-permeable concrete base layer portion (2), a reinforcing material (3) is embedded in the base layer portion (2). In addition, a plurality of through holes (21) are formed, and the through holes (21) are formed such that the upper hole diameter is larger than the lower hole diameter, and the water-permeable surface layer portion (1) A water-permeable concrete board, characterized in that is laminated on the upper surface (2a) of the base layer portion (2) and the through hole (21). 前記貫通穴(21)が、その上部を広くくり貫いた凹部(21a)と、その凹部(21a)の底部に穿設した細穴(21b)とから成る請求項1記載の透水性コンクリート板。   The water permeable concrete board according to claim 1, wherein the through hole (21) is composed of a recess (21a) which is widely hollowed at an upper portion thereof, and a narrow hole (21b) which is drilled in a bottom portion of the recess (21a). 前記補強材(3)が、前記基層部(2)の板厚中央より下部に埋設した請求項1又は2記載の透水性コンクリート板。
The water-permeable concrete board of Claim 1 or 2 with which the said reinforcing material (3) was embed | buried under the board | plate thickness center of the said base layer part (2).
JP2010190773A 2010-08-27 2010-08-27 Water permeable concrete plate Pending JP2012046981A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016141770A1 (en) * 2015-03-12 2016-09-15 周太泽 Hard road construction method for natural groundwater recharge
CN107663824A (en) * 2016-07-27 2018-02-06 仁创生态环保科技股份有限公司 Split type water-permeable brick
CN107663822A (en) * 2016-07-27 2018-02-06 仁创生态环保科技股份有限公司 Split type water-permeable brick

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016141770A1 (en) * 2015-03-12 2016-09-15 周太泽 Hard road construction method for natural groundwater recharge
US10233595B2 (en) 2015-03-12 2019-03-19 Taize ZHOU Hard pavement construction method for natural groundwater recharge
CN107663824A (en) * 2016-07-27 2018-02-06 仁创生态环保科技股份有限公司 Split type water-permeable brick
CN107663822A (en) * 2016-07-27 2018-02-06 仁创生态环保科技股份有限公司 Split type water-permeable brick

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