JP5835788B2 - Drainage floor board and its laying body - Google Patents

Description

The present invention relates to a drainage floor board and a laying body thereof, and more particularly to a floorboard and a laying body thereof in which a drainage part for draining road surface water and the like is formed from the floorboard surface.

Conventionally, in order to maintain the drainage performance, the road surface floor board is made of porous asphalt and porous cementitious hardened body, collected from the continuous voids, or installed to tilt the floor board itself. Then, the water was collected from the inclined surface and dropped into a U-shaped gutter, L-shaped block, or hollow cylindrical side groove block for wastewater treatment (Japanese Patent Laid-Open No. 10-131269).

JP-A-10-131269

However, the porous asphalt and the hardened porous cementitious floor board have insufficient compression strength and bending strength, are easily damaged such as chipping, and have problems in durability such as wear. In addition, dust, sand dust, and dust adhered to the porous part, resulting in a decrease in permeation performance. Moreover, when the floorboard itself is inclined and installed, the wheelchair starts moving on the inclined surface, which is dangerous. The present invention has been made in view of the conventional problems as described above, and even when the floor slab itself is installed horizontally, road surface water and the like can be directly and efficiently flowed into the drainage section, thereby allowing the top surface of the block to be The problem was to provide a road surface drainage floor board that can cope with a sudden increase in water and that has excellent safety.

Furthermore, another object of the present invention is to realize a road surface drainage floor plate that is robust, dense, and hardly adheres to dirt, and has good drainage performance.

The present invention
[1] A floor board having a rectangular horizontal plane 1 has a water guide groove section 2 of substantially the same width that is inclined down from the end section 3a belonging to one side on the horizontal plane to the other end section 3b belonging to the other opposite side. The road surface drainage precast concrete floor board has a wider drainage vertical groove 4 connected to the water guide groove 2 at the other end 3b.
[2] A floor board having a rectangular horizontal plane, having a water guide groove portion having substantially the same width obliquely descending from the end portion belonging to one side on the horizontal plane to the other end portion belonging to the other opposite side, In the precast concrete floor board for drainage on the road surface, characterized in that it has a wider vertical groove for drainage connected to the water guide groove in the part, a plurality of parallel water guide grooves inclined obliquely in the same direction, A floor drainage floor board characterized by having a connected vertical groove at the other end, and a plurality of branch grooves that are connected obliquely to the inclined water guide groove section and collect water on the horizontal plane. It is.
[3] The sides to which the ends having the water guide grooves having substantially the same width are brought into contact with each other, and the sides to which the vertical grooves having the water guide grooves connected to the other end are brought into contact with each other , [1] Or it is an installation object of a floor board for road surface drainage characterized by laying a floor board for road surface drainage of [2].

Precast concrete is used for the road surface drainage floor plate having the above-described configuration. Since this is not porous, the permeation performance does not deteriorate due to the adhesion of dust, dust, and dust. Moreover, it has sufficient strength properties as a floorboard. Since the top surface of the floorboard is kept horizontal, only the water guide groove is slanted, so even if the floorboard is laid horizontally, drainage is possible, and each floorboard has a drainage vertical groove, and a large amount of rainwater falls temporarily. However, quick processing is possible. In other words, since the road surface itself does not have an inclined surface, it is possible to avoid a case where the wheelchair begins to move and lead to an unexpected disaster, and it is possible to cope with sudden water increase on the floor surface by efficiently flowing into the drainage part. is there.

When a water collecting branch groove is cut on a horizontal surface with respect to the water guiding groove , water collection becomes quicker, and when a person walks and a wheelchair passes, an appropriate frictional force is applied to prevent accidents caused by slipping. It becomes.

Furthermore, by using a hardened body containing cement as a floor board, a road surface drain floor board that is robust, hardly adheres to dirt, and has good drainage performance has been realized.

It is a figure which shows the orthographic projection figure of the floor board of this invention. It is a perspective view which shows the vertical groove | channel and the water guide groove part of the floor board of this invention. It is a figure which shows the front view of another floor board of this invention. It is a figure which shows the laying body of this invention. It is a figure which shows the construction cross section of this invention.

FIG. 1 shows a road surface drainage floor board according to an embodiment of the present invention, and the road surface drainage floor board 10 is made of precast concrete. (A) is the front view which caught the horizontal surface from the top, (b) is a right view, (c) is a left view, (d) is a bottom view. The horizontal plane 1 is polygonal so that it can be laid without substantial gaps, and a rectangular shape is particularly preferable. A water guide groove portion 2 having substantially the same width is formed by being inclined down from the end portion 3a belonging to one side on the horizontal plane to the other end portion 3b belonging to the other opposite side.

The cross-sectional shape of the groove is preferably trapezoidal or rectangular as shown in FIGS. 1 (b) and 1 (c). The groove in the end portion 3a is shallow as in (c), the groove in the end portion 3b is deep as in (b), and the groove is inclined. The degree of inclination is preferably in the range of 1/200 to 1/50 as the inclination change width with respect to the groove length. If the change in inclination is smaller than 1/200, the flow of water may not be smooth. If it is larger than 1/50, the plate thickness near the vertical groove 4 is reduced by design, which is disadvantageous in terms of product strength. It is.

The drainage vertical groove 4 having a width wider than the bottom side 21 of the cross section of the water guide groove 2 is formed on the other end 3 b in connection with the water guide groove 2. In FIG. 1B, the width of the vertical groove portion is further expanded both in the end direction and in the vertical direction (in FIG. 1A, the back direction of the paper surface, and in FIG. 1B, the left direction of the paper surface). It was possible to prevent clogging of vertical grooves. FIG. 2 is a perspective view of a state in which the main floor board having four water conduits is installed from the end 3b side in FIG. The vertical groove 3 guides the water guide groove portion in the vertical direction at the end 3b. The upper part of the vertical groove is open, which is convenient for inspection and cleaning.

In FIG. 3, the water guide portion is formed on a horizontal plane in parallel with a plurality of strips in the same direction, and has a vertical groove 4 connected to the other end portion 3 a. The distance between the water guide grooves varies depending on the amount of drainage, and when the distance becomes wider, the drainage water has a plurality of branch grooves 5 connected to the horizontal upper surface 1 to collect water by falling in the direction of the slope of the water guide grooves. The floorboard is illustrated.

By connecting the plurality of branch grooves 5 to the water guide groove portion 2 as the main branch, a wider range of rainwater is collected in a short time, and the water is passed through the water guide groove 2, thereby facilitating drainage from the vertical grooves 4. . Moreover, the branch groove 5 produces the slip prevention effect of a horizontal surface.

FIG. 4 is a view of the rectangular floorboard in which the sides to which the end portions 3a belong are brought into contact with each other and the end portions 3b are brought into contact with each other. It becomes a laying body in which six road surface drainage boards are arranged. Arbitrary number of floorboards will be laid according to the construction area.

FIG. 5 shows a state where a drainage floor board having 22 water guide groove portions 2 is laid and installed from above, in a plan view, and also shows an example of its construction cross section. The construction cross section in which the floorboard of the present application was installed on the base concrete plate provided with the drainage port using adhesive mortar is schematically shown.

The concrete and mortar used in the present invention can be manufactured by press molding, but can be formed by casting using ordinary concrete having a slump of about 8 to 15 cm and mortar having a flow value of about 20 to 30 cm. preferable. The concrete slump was measured by JIS A 1101 “Concrete Slump Test Method”, and the mortar flow value was measured by JIS R 5201 “Cement Physical Test Method (11. Flow Test)”.

The amount of cement when using concrete in the present invention is preferably 300 to 450 kg / m ^{3 in} terms of unit cement amount. If the unit cement amount is less than 300 kg / m ³ , the strength may be insufficient. Even if the unit cement amount exceeds 450 kg / m ³ , there is no merit in strength.

The aggregate unit amount may be such that the concrete can be blended so that the flowability necessary for molding and the surface property of the floor board after curing are good while sufficiently securing practical strength.

Normal cement with a water cement ratio of 45-50%, slump about 8-15 cm, mortar with a water powder ratio of 12-30% and a flow value of about 20-30 cm (when fiber reinforcement is used, the fiber content is 0.8 to 8% by volume is preferred with respect to the formulation excluding water). Moreover, when taking landscape into consideration, concrete colored with white cement and pigment can be used.

Specifically, the concrete can be prepared as follows.

As the cement used in the present invention, ordinary portland cement, eco-cement, and the like, and white cement can be used when scenery is required, but the type is not particularly limited.

As the aggregate, natural aggregates such as river sand, river gravel, crushed stone, and crushed sand can be used. In addition, granite or the like can be used when a pseudo-stone-like texture is required.

The particle size of these aggregates is not particularly specified, but is preferably 20 mm or less, and more preferably 15 mm or less. If it exceeds 20 mm, the aggregate becomes larger than the size of the block, and it may be difficult to obtain dimensional accuracy and shape stability. Further, when the member width of the horizontal surface 1 between the water guide grooves is set to be relatively small, using an aggregate having a maximum dimension exceeding the predetermined width causes unevenness in the partial strength surface of the horizontal surface 1, and the surface properties. Therefore, it is more preferable to limit the maximum dimension of the aggregate to less than one horizontal plane member width. Although the horizontal plane 1 member width can be designed arbitrarily, it is usually 10 to 30 mm.

Examples of the kneaded water include tap water, recovered water, ground water, industrial water, and the like, but any water that does not interfere with the quality of the block can be used.

If necessary, blast furnace slag fine powder, limestone fine powder, and / or pozzolanic substances such as silica fume and fly ash may be added.

Furthermore, when preparing mortar, 100 parts by weight of cement, 5 to 50 parts by weight of pozzolanic fine powder (average particle diameter of 10 μm or less), 50 to 250 parts by weight of fine aggregate having a particle diameter of 2 mm or less, and a water reducing agent are solidified. It is preferable to pour a compound containing 0.5 to 4.0 parts by weight and 10 to 30 parts by weight of water into a resin mold. The obtained cured product accurately reflected the mold shape of the casting and was excellent in dimensional stability in molding of details such as grooves, and the surface of the cured product was dense and suitable as a drain groove. Here, the particle size of the fine aggregate is an 85% weight cumulative particle size.

Furthermore, the fastness is further enhanced by using steel fibers having a diameter of 0.01 to 1.0 mm and a length of 2 to 30 mm, and organic fibers having a diameter of 0.04 to 1.0 mm and a length of about 5 to 10 mm. be able to. The steel fiber content is preferably 4% by volume or less with respect to the entire formulation excluding water. An organic fiber can add the 8 volume% or less with respect to the whole compound except water, and can raise the toughness of a groove part. The organic fiber is more preferably 0.8 to 5% by volume. The organic fiber material is preferably vinylon fiber, polypropylene fiber, polyethylene fiber, aramid fiber, carbon fiber or the like. Thus, it is possible to prepare a drainage plate having a hardened cement structure and a solid cement which is solid and has a small amount of dirt on the surface.

In addition, chemical admixtures such as an AE water reducing agent, a high performance AE water reducing agent, a strength enhancer, and a quick setting agent may be added. A pigment can also be added when importance is attached to landscape.

In the method for producing a floor board, concrete mixed with a mixer is transferred to a hopper or the like, and then poured into a mold to be molded. At that time, moderate vibration can be applied so that bubbles do not remain on the mold surface.

Curing is steam-cured so as to obtain a predetermined strength, and the curing temperature and curing time are determined by the concrete used for floor slab production. In the case of ordinary concrete having a nominal strength of 27 to 35 N / mm ² , the curing temperature is preferably 55 to 75 ° C. and the curing is preferably 3 to 6 hours. If the curing temperature exceeds 75 ° C., the long-term strength is reduced. In the case of fiber reinforced concrete, the primary curing can be performed at 20 to 40 ° C. for 12 to 48 hours, and the secondary curing can be performed at 60 to 90 ° C. for 24 to 48 hours.

The following materials were used.
1) Cement: Low heat Portland cement (manufactured by Taiheiyo Cement Co., Ltd.)
2) Pozzolanic fine powder; silica fume (average particle size 0.7 μm)
3) Fine aggregate; Silica sand No. 4 and Silica sand No. 5 2: 1 (weight ratio) mixture 4) High performance AE water reducing agent; Polycarboxylic acid type high performance AE water reducing agent 5) Water; Tap water 6) Inorganic powder Limestone powder (average particle size 7 μm), wollastonite 7) organic fiber; vinylon organic fiber (average length 6 mm, diameter 0.2 mm)

Example 1
100 parts by weight of low heat Portland cement, 32.5 parts by weight of silica fume, 120 parts by weight of fine aggregate, 1.0 part by weight of high-performance AE water reducing agent (solid content with respect to cement) and 22 parts by weight of water are put into a biaxial kneader. Kneaded.
The flow value of the blend was measured in the method described in “JIS R 5201 (Cement physical test method) 11. Flow test” without performing 15 drop motions. As a result, the flow value was 265 mm. The blend was poured into a φ50 × 100 mm mold (made of steel), pre-positioned at 20 ° C. for 48 hours, and then steam-cured at 90 ° C. for 48 hours. The cured body had a compressive strength (average value of three) of 210 MPa. The blend was poured into a 4 × 4 × 16 cm mold (made of steel), pre-positioned at 20 ° C. for 48 hours, and then steam-cured at 90 ° C. for 48 hours. The bending strength (average value of the three pieces) of the cured body was 25 MPa. Further, the blend was poured into a mold (made of polyethylene) having the shape shown in FIG. 1 and pre-positioned at 20 ° C. for 48 hours, followed by steam curing at 90 ° C. for 48 hours. The surface roughness (Rmax) of the cured product was measured using a surface roughness meter based on “JIS B 0651”. As a result, it was a dense hardened body having a surface roughness (Rmax) of 5.0 μm. In addition, the cured product had little adhesion dirt and showed an excellent drainage effect.

Example 2
Low heat Portland cement 100 parts by weight, silica fume 32.5 parts by weight, fine aggregate 120 parts by weight, high performance AE water reducing agent 1.0 part by weight (solid content with respect to cement), water 22 parts by weight, limestone powder 30 parts by weight, 18 parts by weight of lastonite and vinylon organic fiber (2% of the volume in the blend) were charged into a biaxial kneader and kneaded. The flow value of the formulation was measured as in Example 1. As a result, the flow value was 240 mm. Further, the blend was poured into a mold (made of polyethylene), placed at 20 ° C. for 48 hours, and then steam-cured at 90 ° C. for 48 hours.
The compressive strength and bending strength were also measured in the same manner as in Example 1. As a result, the compressive strength was 225 MPa and the bending strength was 48 MPa. The surface roughness (Rmax) was also measured in the same manner as in Example 1. As a result, Rmax was 4.7 μm. Moreover, the surface was dense, there was little adhesion dirt, and the drainage effect was also especially favorable.

This floor board can be suitably used not only for construction on the road surface but also for construction of pedestrian decks, bridge walkways, railway home decks, and platforms on a hierarchy.

10: floor plate 1: horizontal plane 2: water guide groove portion 3a: end portion 3b belonging to one side on the horizontal plane 3: other end portion 4 belonging to another side opposite to each other 4: vertical groove 4 for drainage
5: Branch groove 100 that is inclined down and collects water.

Claims (3)

100 parts by weight of cement, 5 to 50 parts by weight of pozzolanic fine powder (average particle size of 10 μm or less), 50 to 250 parts by weight of fine aggregate having a particle size of 2 mm or less, 0.5 to 4.0 parts by weight in terms of solid content Using a mortar produced by casting a water-containing agent and a composition containing 10 to 30 parts by weight of water into a resin mold, the floor plate having a rectangular horizontal plane is opposed to an end belonging to one side on the horizontal plane. It has a substantially equal width water guide groove formed at the other end belonging to the other side, and has a wider vertical drainage groove connected to the water guide groove at the other end. A precast mortar floor board for road drainage.   It is a floor board having a rectangular horizontal plane, and has a water guide groove portion of substantially the same width that is inclined from the end portion belonging to one side on the horizontal plane to the other end portion belonging to the other opposite side, and at the other end portion, In the precast concrete floor board for road surface drainage, which is connected to the water guide groove part and has a wider vertical groove for drainage, the plurality of parallel water guide groove parts inclined in the same direction are provided at the other end part. A road surface drainage floor board comprising a plurality of branch grooves that have a vertical groove connected to each other and that are connected obliquely to a water guide groove portion that is inclined and collected on a horizontal plane.   The sides to which the end portions having the substantially equal width of the water guide groove belong are brought into contact with each other, and the sides to which the vertical groove having the water guide groove portion connected to the other end portion are brought into contact with each other. A laying body for road drainage, characterized by laying two floor drainage floor boards.