JPH10120477A - Porous concrete molded material with connecting hole and its production - Google Patents
Porous concrete molded material with connecting hole and its productionInfo
- Publication number
- JPH10120477A JPH10120477A JP8294591A JP29459196A JPH10120477A JP H10120477 A JPH10120477 A JP H10120477A JP 8294591 A JP8294591 A JP 8294591A JP 29459196 A JP29459196 A JP 29459196A JP H10120477 A JPH10120477 A JP H10120477A
- Authority
- JP
- Japan
- Prior art keywords
- porous concrete
- connecting hole
- mortar
- periphery
- concrete molded
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000000463 material Substances 0.000 title abstract description 26
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 24
- 239000011248 coating agent Substances 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims abstract description 4
- 239000008187 granular material Substances 0.000 claims abstract description 4
- 238000005553 drilling Methods 0.000 claims description 13
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 229920003002 synthetic resin Polymers 0.000 abstract description 3
- 239000000057 synthetic resin Substances 0.000 abstract description 3
- 230000002787 reinforcement Effects 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 17
- 239000000843 powder Substances 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000004568 cement Substances 0.000 description 9
- 238000004898 kneading Methods 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 230000035699 permeability Effects 0.000 description 4
- 238000005469 granulation Methods 0.000 description 3
- 230000003179 granulation Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 239000004094 surface-active agent Substances 0.000 description 3
- 239000011398 Portland cement Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229910021487 silica fume Inorganic materials 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 1
- 235000008429 bread Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000011396 hydraulic cement Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229920003169 water-soluble polymer Polymers 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0003—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof containing continuous channels, e.g. of the "dead-end" type or obtained by pushing bars in the green ceramic product
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、河川の護岸などの
法面ブロックや連接ブロックとして用いられるポーラス
コンクリート成形体、特に成形体同士を連結するための
鉄筋を内部に通すことのできる連結孔を設けたポーラス
コンクリート成形体、及びその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a porous concrete molded body used as a slope block or a connecting block for revetment of a river or the like, and in particular, a connecting hole through which a reinforcing bar for connecting the molded bodies can be passed. The present invention relates to a provided porous concrete molded body and a method for producing the same.
【０００２】[0002]
【従来の技術】従来のポーラスコンクリート成形体は、
特開平７−４２１７６号公報に記載されているように、
該成形体の内部に予め埋め込まれた鎖などを繋げて多数
の成形体を連結するか、または、実開平６−５３６３０
号公報に記載されているように、成形体の内部を貫通す
る連結孔に鉄筋を通すことによって、連結している。連
結孔を設ける後者の方法では、連結孔の周囲の強度不足
を補うために、あるいは鉄筋の挿入を容易にするため
に、鋼管、合成樹脂管、厚紙管などの管材で孔の周囲を
補強している。2. Description of the Related Art Conventional porous concrete compacts are:
As described in JP-A-7-42176,
A chain or the like embedded beforehand in the molded body is connected to connect a large number of molded bodies.
As described in Japanese Patent Application Laid-Open Publication No. H10-209, connection is made by passing a reinforcing bar through a connection hole penetrating the inside of the molded body. In the latter method of providing a connection hole, the periphery of the hole is reinforced with a pipe material such as a steel pipe, a synthetic resin pipe, or a cardboard pipe in order to compensate for insufficient strength around the connection hole or to facilitate insertion of a reinforcing bar. ing.
【０００３】しかし、鎖などを繋げて成形体を連結する
方法では、シャックルまたは特殊な金具が必要である。
また、連結孔を補強するための管材を設け、その中に鉄
筋を通して成形体を連結する方法では、管材の設置に伴
う費用や手間がかかる上に、管材に対する周囲のポーラ
スコンクリートの付着が不十分な場合に、管材が固定さ
れないおそれがある。[0003] However, the method of connecting the molded bodies by connecting chains or the like requires a shackle or a special fitting.
In addition, in the method of providing a pipe material for reinforcing the connection hole and connecting the formed body through a reinforcing bar therein, the cost and labor involved in the installation of the pipe material are required, and the adhesion of the surrounding porous concrete to the pipe material is insufficient. In such a case, the pipe material may not be fixed.
【０００４】[0004]
【発明が解決しようとする課題】本発明の目的は、連結
孔の周囲の強度が高く、管材で連結孔の周囲を補強する
必要のないポーラスコンクリート成形体、及びその製造
方法を提供することにある。SUMMARY OF THE INVENTION It is an object of the present invention to provide a porous concrete molded body having a high strength around a connecting hole and requiring no pipe material to reinforce the surrounding of the connecting hole, and a method for producing the same. is there.
【０００５】[0005]
【課題を解決するための手段】請求項１に記載の連結孔
付きポーラスコンクリート成形体の製造方法は、粗骨材
の周囲にモルタルまたはペーストを被覆させた粒体から
なる未硬化状態のポーラスコンクリート成形体に、棒状
孔穿け治具付きバイブレータを、貫通させながらまたは
貫通させた後に振動させて、該粗骨材の周囲に被覆した
モルタルまたはペーストの一部を該棒状孔穿け治具の周
囲に浮き出させ、孔壁及びその周辺がモルタルまたはペ
ーストに富む連結孔を形成させることを特徴とする。請
求項２に記載の連結孔付きポーラスコンクリート成形体
の製造方法は、上記方法で、特に、上記棒状孔穿け治具
付きバイブレータを３，０００〜１５，０００ｖｐｍの
振動数で振動させることを特徴とする。請求項３に記載
のポーラスコンクリート成形体は、貫通する連結孔を有
し、かつ、該連結孔の孔壁及びその周辺が、モルタルま
たはペースト層に富んでいることを特徴とする。According to a first aspect of the present invention, there is provided a method for producing a porous concrete molded body having a connection hole, comprising an unhardened porous concrete comprising a granular material obtained by coating a mortar or a paste around a coarse aggregate. A vibrator with a rod-shaped hole-piercing jig is vibrated while penetrating or after the molded body, and a part of the mortar or paste coated around the coarse aggregate is wrapped around the rod-shaped hole-piercing jig. It is characterized in that the hole is raised and the hole wall and its periphery form a connection hole rich in mortar or paste. The method for producing a porous concrete molded body with connection holes according to claim 2 is characterized in that the vibrator with the rod-shaped hole drilling jig is vibrated at a vibration frequency of 3,000 to 15,000 vpm. I do. According to a third aspect of the present invention, there is provided a porous concrete molded body having a connecting hole penetrating therethrough, and a hole wall of the connecting hole and a periphery thereof being rich in a mortar or a paste layer.
【０００６】[0006]
【発明の実施の形態】本発明で用いるポーラスコンクリ
ート成形体の材料は、粗骨材と、セメント及び必要に応
じて添加されるその他の材料からなる粉体と、該粉体に
対する重量比が０〜２００％の細骨材と、該粉体に対す
る重量比が１０〜３０％の水と、該粉体に対する重量比
が０〜５％の界面活性剤を含む。BEST MODE FOR CARRYING OUT THE INVENTION The material of a porous concrete molded product used in the present invention is a powder composed of coarse aggregate, cement and other materials added as required, and a weight ratio to the powder of 0. It comprises ~ 200% fine aggregate, water with a weight ratio to the powder of 10-30%, and a surfactant with a weight ratio of 0-5% relative to the powder.
【０００７】粗骨材としては、粒径２．５ｍｍ以上の粒
体であれば任意の材質のものが用いられる。例えば、軽
量骨材、天然骨材、砕石などである。セメントとして
は、例えば、普通ポルトランドセメント、早強ポルトラ
ンドセメント、ホワイトセメントなどの水硬性のセメン
トが挙げられる。必要に応じて添加されるその他の材料
としては、例えば、ポーラスコンクリート用混和材、フ
ライアッシュ、高炉スラグ粉末、シリカフューム、石灰
石粉、硅石粉などの無機質粉体が挙げられる。これらの
材料の添加量は、粉体中、０〜６０重量％程度である。As the coarse aggregate, any material can be used as long as it has a particle size of 2.5 mm or more. For example, lightweight aggregate, natural aggregate, crushed stone, and the like. Examples of the cement include hydraulic cement such as ordinary Portland cement, early-strength Portland cement, and white cement. Examples of other materials that may be added as needed include inorganic powders such as admixtures for porous concrete, fly ash, blast furnace slag powder, silica fume, limestone powder, and silica stone powder. The addition amount of these materials is about 0 to 60% by weight in the powder.
【０００８】細骨材としては、粗骨材の粒径が５ｍｍ以
上の場合は粒径５ｍｍ未満の粒体、粗骨材の粒径が２．
５〜５ｍｍの場合は粒径２．５ｍｍ未満の粒体であれば
任意のものを用いることができる。細骨材の粒径は、粒
径が５ｍｍ以上及び２．５〜５ｍｍの粗骨材に対し、好
ましくはそれぞれ２．５ｍｍ以下及び１．５ｍｍ以下で
あり、より好ましくはそれぞれ１ｍｍ以下及び０．５ｍ
ｍ以下である。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。[0008] As the fine aggregate, when the particle size of the coarse aggregate is 5 mm or more, the particle having a particle size of less than 5 mm, and the particle size of the coarse aggregate is 2.
In the case of 5 to 5 mm, any particles can be used as long as they have a particle size of less than 2.5 mm. The particle size of the fine aggregate is preferably 2.5 mm or less and 1.5 mm or less, respectively, more preferably 1 mm or less and 0.1 mm or less for coarse aggregate having a particle size of 5 mm or more and 2.5 to 5 mm. 5m
m or less. 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.
【０００９】細骨材の添加量は、セメントまたはセメン
トを含む粉体混合物に対して重量比で２００％以下であ
り、通常１００％程度である。細骨材の添加により、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２００％を超えると、粗骨材にモルタルが被覆されに
くくなり、所定の被覆厚さが確保できなくなる。The amount of the fine aggregate added is 200% or less, usually about 100% by weight, based on the cement or the powder mixture containing the cement. By adding the fine aggregate, shrinkage due to drying can be suppressed. If the amount of the fine aggregate exceeds 200%, it becomes difficult for the mortar to be coated on the coarse aggregate, and a predetermined coating thickness cannot be secured.
【００１０】界面活性剤としては、高性能減水剤などが
挙げられる。高性能減水剤としては、例えば、マイティ
１５０（花王株式会社製、商品名）などが挙げられ、液
体及び粉末のいずれも使用できる。添加量は、セメント
またはセメントを含む粉体混合物に対して重量比で０〜
５％である。界面活性剤を添加することによって、少な
い水量で造粒することができる。添加量が５％を超える
と、モルタル（細骨材を含む場合）またはペースト（細
骨材を含まない場合）の流れ落ちが起こり、透水係数が
小さくなる。[0010] Examples of the surfactant include a high-performance water reducing agent. Examples of the high-performance water reducing agent include Mighty 150 (trade name, manufactured by Kao Corporation), and both liquid and powder can be used. The amount of addition is 0 to 0 in weight ratio to cement or a powder mixture containing cement.
5%. By adding a surfactant, granulation can be performed with a small amount of water. If the addition amount exceeds 5%, mortar (when fine aggregates are included) or paste (when fine aggregates are not included) flows down, and the water permeability decreases.
【００１１】粗骨材に対する粗骨材以外の材料の容積比
は、３０〜６５％である。３０％未満では、所定の厚さ
に被覆されにくくなり、強度が小さくなる。６５％を超
えると、透水係数が小さくなる。粗骨材の表面に被覆さ
れるモルタルまたはペーストの厚さは、１〜５ｍｍであ
る。１ｍｍ未満では、モルタルまたはペーストが少なす
ぎ、５ｍｍを超えると、空隙が小さくなる。The volume ratio of the material other than the coarse aggregate to the coarse aggregate is 30 to 65%. If it is less than 30%, it will be difficult to coat to a predetermined thickness, and the strength will be small. If it exceeds 65%, the water permeability will decrease. The thickness of the mortar or paste coated on the surface of the coarse aggregate is 1 to 5 mm. If it is less than 1 mm, the amount of mortar or paste is too small, and if it is more than 5 mm, the gap becomes small.
【００１２】本発明で用いる棒状孔穿け治具付きバイブ
レータの一例を図１に示す。図１において、市販のバイ
ブレータ１の振動部の先端に、連結孔の直径に合わせた
金属製棒状孔穿け治具３が、接続部２によって接続され
ている。FIG. 1 shows an example of a vibrator with a rod-shaped hole drilling jig used in the present invention. In FIG. 1, a metal rod-shaped hole drilling jig 3 adapted to the diameter of a connection hole is connected to a distal end of a vibrating portion of a commercially available vibrator 1 by a connection portion 2.
【００１３】ポーラスコンクリート成形体の製造方法
は、次の通りである。上記の材料をミキサーに投入して
混練したのち、型枠に投入する。混練方法は、特に限定
されないが、一般的には、材料を一括してミキサーに投
入して、１分以上混練することにより造粒される。ま
た、粗骨材以外の材料をミキサーに投入してモルタルま
たはペーストを先練りした後に、粗骨材を投入して１分
以上混練することによっても造粒される。混練に用いる
ミキサーは、通常のコンクリートの混練に用いられるど
のタイプのものでもよく、例えば、オムニタイプミキサ
ー、パンタイプミキサー、二軸ミキサーなどが用いられ
る。A method for producing a porous concrete molded body is as follows. The above materials are put into a mixer, kneaded, and then put into a mold. The method of kneading is not particularly limited, but generally, the granulation is carried out by putting the materials in a lump into a mixer and kneading for 1 minute or more. Granulation can also be performed by charging a material other than the coarse aggregate into a mixer, kneading the mortar or paste, and then charging the coarse aggregate and kneading for 1 minute or more. The mixer used for kneading may be of any type used for kneading ordinary concrete, for example, an omni-type mixer, a pan-type mixer, a twin-screw mixer, or the like.
【００１４】混練、造粒した材料を型枠内に投入した
後、型枠の上部を空けた状態で、または型枠の周囲を密
封した状態で、３，０００〜８，０００ｖｐｍの振動を
５〜６０秒間加える。振動数が３，０００ｖｐｍ未満で
あると、強度が小さくなり、８，０００ｖｐｍを超える
と、透水係数が小さくなる。振動を加えるには、型枠に
取り付け可能な振動機やテーブルバイブレータなどを用
いることができる。振動を加える際に１〜１００ｋＰａ
の圧力で加圧することもできる。加圧するには、油圧式
または空気圧式の加圧装置などを用いることができる。After the kneaded and granulated material is charged into the mold, vibration of 3,000 to 8,000 vpm is applied to the mold with the top of the mold opened or the periphery of the mold sealed. Add ~ 60 seconds. If the frequency is less than 3,000 vpm, the strength is reduced, and if it exceeds 8,000 vpm, the water permeability is reduced. In order to apply vibration, a vibrator or a table vibrator that can be attached to the mold can be used. 1 to 100 kPa when applying vibration
It can also be pressurized by the pressure of. For pressurization, a hydraulic or pneumatic pressurizing device or the like can be used.
【００１５】棒状孔穿け治具付きバイブレータが予め設
置されていない場合には、ポーラスコンクリート成形体
が未硬化状態にあるうちに、棒状孔穿け治具付きバイブ
レータを所定の位置に振動させながら挿入する。振動条
件は、振動数が３，０００〜１５，０００ｖｐｍで、振
幅が０．６〜２．３ｍｍ、振動時間が１５〜１２０秒間
である。振動数が３，０００ｖｐｍ未満では、粗骨材の
周囲に被覆したモルタルまたはペーストに十分な振動を
与えることができず、１５，０００ｖｐｍを超えると、
振動時にモルタルまたはペーストが流れ落ちる。振動
は、例えば、偏心円の回転などによる。棒状孔穿け治具
付きバイブレータが予め設置されている場合には、ポー
ラスコンクリート成形体が未硬化状態にあるうちに、同
様の振動条件で振動を加える。When the vibrator with the rod-shaped drilling jig is not installed in advance, the vibrator with the rod-shaped hole drilling jig is inserted into a predetermined position while vibrating while the porous concrete compact is in an uncured state. . The vibration conditions are a frequency of 3,000 to 15,000 vpm, an amplitude of 0.6 to 2.3 mm, and a vibration time of 15 to 120 seconds. If the frequency is less than 3,000 vpm, sufficient vibration cannot be given to the mortar or paste coated around the coarse aggregate, and if it exceeds 15,000 vpm,
Mortar or paste runs down when vibrated. The vibration is caused by, for example, rotation of an eccentric circle. When a vibrator with a rod-shaped hole drilling jig is installed in advance, vibration is applied under the same vibration conditions while the porous concrete molded body is in an uncured state.
【００１６】これによって、粗骨材の周囲に被覆したモ
ルタルまたはペーストの一部を連結孔の表面に浮き出さ
せ、連結孔の周囲を緻密化して補強すると共に、連結孔
の形を安定させることができる。なお、連結孔の周囲を
より強固に補強するために、予め棒状孔穿け治具付きバ
イブレータにシリカフューム、水溶性ポリマー、硬化促
進剤などを付着させておいてもよい。Thus, a part of the mortar or paste coated on the periphery of the coarse aggregate is raised on the surface of the connection hole, the periphery of the connection hole is densified and reinforced, and the shape of the connection hole is stabilized. it can. In order to reinforce the periphery of the connection hole more firmly, silica fume, a water-soluble polymer, a curing accelerator, or the like may be previously attached to a vibrator with a rod-shaped hole drilling jig.
【００１７】連結孔の周囲を取り囲むモルタルまたはペ
ースト層の厚みは、５〜２０ｍｍ程度である。モルタル
またはペースト層は、連結孔の内壁の面積中、７０％以
上にわたって形成される。The thickness of the mortar or paste layer surrounding the connection hole is about 5 to 20 mm. The mortar or paste layer is formed over 70% or more of the area of the inner wall of the connection hole.
【００１８】振動を加え終えたのち、棒状孔穿け治具付
きバイブレータを引き抜き、型枠から成形体を脱型す
る。脱型した成形体の養生は、通常の蒸気養生や湿空養
生で行なう。本発明の製造方法によって得られるポーラ
スコンクリート成形体の一例を図２に示す。図２におい
て、球形のポーラスコンクリート成形体４には、連結孔
５が３つ直交して設けられている。連結孔の直径は、特
に限定されないが、例えば、直径２５ｃｍの球形のポー
ラスコンクリート成形体の場合、通常、１５〜３０ｍｍ
である。After the vibration has been applied, the vibrator with the rod-shaped hole punching jig is pulled out, and the molded body is released from the mold. Curing of the demolded compact is performed by normal steam curing or wet-air curing. FIG. 2 shows an example of a porous concrete compact obtained by the production method of the present invention. In FIG. 2, the spherical porous concrete molded body 4 is provided with three connection holes 5 orthogonal to each other. Although the diameter of the connection hole is not particularly limited, for example, in the case of a spherical porous concrete molded body having a diameter of 25 cm, usually 15 to 30 mm
It is.
【００１９】[0019]
【実施例】１ｍ3 当たり、早強セメント（商品名：アサ
ノベロセメント、日本セメント株式会社製）１８０ｋ
ｇ、ポーラスコンクリート用混和材（商品名：アサノポ
アミックス、日本セメント株式会社製）６０ｋｇ、水５
３ｋｇ、細骨材（粒径０．３ｍｍ以下、商品名：珪砂７
号、日本セメント株式会社製）２４０ｋｇ、粗骨材（粒
径１３〜２０ｍｍ、商品名：砕石５号、奥多摩工業株式
会社製）１４６５ｋｇの材料を用意した。粉体に対する
細骨材の重量比は１００％であり、粉体に対する水の重
量比は２２％であり、粗骨材に対する粗骨材以外の材料
の容積比は４０％であった。[Example] 1m 3 per, early strength cement (trade name: Asano Belo cement, made in Japan Cement Co., Ltd.) 180k
g, 60 kg of porous concrete admixture (trade name: Asanopore Mix, manufactured by Nippon Cement Co., Ltd.), water 5
3 kg, fine aggregate (particle size 0.3 mm or less, trade name: silica sand 7
No., manufactured by Nippon Cement Co., Ltd.), 240 kg, and 1465 kg of coarse aggregate (particle size: 13-20 mm, trade name: Crushed Stone No. 5, manufactured by Okutama Industries Co., Ltd.) were prepared. The weight ratio of fine aggregate to powder was 100%, the weight ratio of water to powder was 22%, and the volume ratio of materials other than coarse aggregate to coarse aggregate was 40%.
【００２０】これらの材料をパン型ミキサーに投入し、
２分間練り混ぜた後、得られた混練物を、内径２５ｃｍ
の球形の型枠内に投入し、３４５０ｖｐｍの振動数で３
５秒間振動させた。その後、直径２ｃｍの棒状孔穿け治
具付きバイブレータ（「軽便電棒ＢＣ２５ＤＳ」（商品
名、エクセン社製）を改良したもの）を挿入して、回転
数１３，０００ｖｐｍ、振幅１．２ｍｍで３０秒間振動
させた。棒状孔穿け治具付きバイブレータを引き抜いた
のち、蒸気養生させた。[0020] These materials are put into a bread mixer,
After kneading for 2 minutes, the obtained kneaded material was immersed in an inner diameter of 25 cm.
Into a spherical mold with a frequency of 3450 vpm and 3
Vibrated for 5 seconds. Thereafter, a vibrator with a 2 cm diameter rod-shaped hole-piercing jig (an improved version of the “light urinal rod BC25DS” (trade name, manufactured by Exen)) is inserted and vibrated at a rotation speed of 13,000 vpm and an amplitude of 1.2 mm for 30 seconds. I let it. After the vibrator with the rod-shaped hole drilling jig was pulled out, it was steam-cured.
【００２１】得られた成形体の空隙率は２３．０％であ
り、透水係数は１．５ｃｍ／ｓであり、圧縮強度は１
８．９Ｎ／ｍｍ2 であった。また、連結孔の周囲は、モ
ルタルまたはペーストによって固められ、連結孔への鉄
筋の挿入に際しても何等支障が生じなかった。The porosity of the obtained molded product is 23.0%, the water permeability is 1.5 cm / s, and the compressive strength is 1
It was 8.9 N / mm 2 . In addition, the periphery of the connection hole was solidified with mortar or paste, and there was no hindrance in inserting the reinforcing bar into the connection hole.
【００２２】図３は、得られたポーラスコンクリート成
形体（直径２５ｃｍ）の表面の粒子構造を示す写真であ
る。表面に多くの空隙のあることがわかる。図４は、得
られたポーラスコンクリート成形体の切断面の、連結孔
及びその周囲の粒子構造を示す写真である。中央部の上
下方向に白く写っているのが、連結孔である。モルタル
またはペーストの一部が連結孔の表面に浮き出ており、
連結孔の周囲にモルタルが富んでいることがわかる。FIG. 3 is a photograph showing the particle structure of the surface of the obtained porous concrete compact (diameter 25 cm). It can be seen that there are many voids on the surface. FIG. 4 is a photograph showing the connection hole and the particle structure around the connection hole in the cut surface of the obtained porous concrete molded product. The connection holes are white in the vertical direction at the center. Part of the mortar or paste is raised on the surface of the connection hole,
It can be seen that the mortar is rich around the connection hole.
【００２３】[0023]
【発明の効果】本発明によると、ポーラスコンクリート
成形体に設けられた連結孔の周囲を、鋼管、合成樹脂管
などの管材を用いなくとも補強することができる。According to the present invention, the periphery of the connection hole provided in the porous concrete molded body can be reinforced without using a pipe such as a steel pipe or a synthetic resin pipe.
【図面の簡単な説明】[Brief description of the drawings]
【図１】棒状孔穿け治具付きバイブレータの一例を示す
図である。FIG. 1 is a diagram showing an example of a vibrator with a rod-shaped hole drilling jig.
【図２】本発明のポーラスコンクリート成形体の一例を
示す図である。FIG. 2 is a view showing one example of a porous concrete molded body of the present invention.
【図３】本発明のポーラスコンクリート成形体の表面の
粒子構造を示す写真である。FIG. 3 is a photograph showing a particle structure on a surface of a porous concrete molded product of the present invention.
【図４】本発明のポーラスコンクリート成形体の切断面
の粒子構造を示す写真である。FIG. 4 is a photograph showing a particle structure of a cut surface of a porous concrete molded product of the present invention.
１ バイブレータ ２ 接続部 ３ 棒状孔穿け治具 ４ ポーラスコンクリート成形体 ５ 連結孔 DESCRIPTION OF SYMBOLS 1 Vibrator 2 Connection part 3 Jig for drilling a rod-shaped hole 4 Porous concrete molding 5 Connection hole
Claims (3)
を被覆させた粒体からなる未硬化状態のポーラスコンク
リート成形体に、棒状孔穿け治具付きバイブレータを、
貫通させながらまたは貫通させた後に振動させて、該粗
骨材の周囲に被覆したモルタルまたはペーストの一部を
該棒状孔穿け治具の周囲に浮き出させ、孔壁及びその周
辺がモルタルまたはペーストに富む連結孔を形成させる
ことを特徴とする連結孔付きポーラスコンクリート成形
体の製造方法。1. A vibrator with a rod-shaped hole drilling jig is provided on an uncured porous concrete molded body made of granules obtained by coating mortar or paste around a coarse aggregate,
By vibrating while penetrating or after penetrating, a part of the mortar or paste coated around the coarse aggregate is raised around the jig for drilling the rod-shaped hole, and the hole wall and its surroundings are turned into mortar or paste. A method for producing a porous concrete molded body having connection holes, characterized by forming rich connection holes.
を、３，０００〜１５，０００ｖｐｍの振動数で振動さ
せる請求項１に記載の連結孔付きポーラスコンクリート
成形体の製造方法。2. The method according to claim 1, wherein the vibrator with the rod-shaped hole drilling jig is vibrated at a frequency of 3,000 to 15,000 vpm.
の孔壁及びその周辺が、モルタルまたはペースト層に富
んでいるポーラスコンクリート成形体。3. A porous concrete molded body having a penetrating connection hole, and a hole wall of the connection hole and its periphery are rich in a mortar or paste layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8294591A JP3056430B2 (en) | 1996-10-16 | 1996-10-16 | Porous concrete compact with connection hole and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8294591A JP3056430B2 (en) | 1996-10-16 | 1996-10-16 | Porous concrete compact with connection hole and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10120477A true JPH10120477A (en) | 1998-05-12 |
| JP3056430B2 JP3056430B2 (en) | 2000-06-26 |
Family
ID=17809763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8294591A Expired - Lifetime JP3056430B2 (en) | 1996-10-16 | 1996-10-16 | Porous concrete compact with connection hole and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3056430B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3525111B2 (en) | 2001-01-25 | 2004-05-10 | セイナン工業株式会社 | Vegetation block and method of manufacturing vegetation block |
-
1996
- 1996-10-16 JP JP8294591A patent/JP3056430B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP3056430B2 (en) | 2000-06-26 |
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