JP3135175U - Water-permeable / water-retentive solidified body - Google Patents

Abstract

[Problem] To provide a water-permeable / water-retentive solidified body having a water-permeable / water-retaining function and capable of installing a surface layer material and a pavement material in a short time by simple work.
SOLUTION: Solidified body obtained by a mixture containing porous blast furnace granulated slag and cement as main components, and further containing slaked lime, carbonate, aluminate, aluminum-based calcium, sulfate, and lignin sulfonic acid compound. And Such a solidified body is obtained by mixing a mixed material containing the above blast furnace granulated slag, cement, slaked lime, carbonate, aluminate, aluminum-based calcium, sulfate and lignin sulfonic acid compound on a base or in a mold. It is obtained by spreading the water over the height, spraying water, and applying light pressure.
[Selection] Figure 1

Description

  The present invention relates to a water-permeable / water-retentive solidified body having a water-permeable / water-retaining function and used as a surface layer material or a pavement material in a sidewalk, a park, a building exterior, or the like.

  Conventionally, roads and parking lots have been paved with asphalt or concrete. However, such pavement does not allow rainwater to penetrate into the ground, causing the surface temperature to rise and causing heat islands, or water on the surface of the pavement, causing a car slip accident. It was. For this reason, there has been a strong demand for pavements having water retention / permeability functions, and various water-permeable pavement materials have been proposed. For example, there is a water-permeable asphalt pavement in which an aggregate used for asphalt pavement has a gap (see Patent Document 1), and a water-permeable concrete pavement in which an aggregate used for concrete pavement has a gap (see Patent Document 2). .

JP 2000-122010 A Japanese Patent Publication No. 2007-92473

  However, in the above paving materials, when paving is installed, roller compaction and compaction using a vibration plate are performed after leveling, and paving work is the same as before, with special technology and much time and man-hours. Is required. In addition, there is a problem that it is not friendly to nature and the environment, such as using asphalt as an auxiliary material for oil refining or using an organic adhesive.

  The present invention has been made in view of the above problems, and has water permeability / water retention function, and can easily install surface layer materials and pavement materials at various sites in a short time by simple work. The purpose is to provide a body.

In order to achieve the above object, the water-permeable / water-retentive solidified body of claim 1 according to the present invention is:
It contains porous blast furnace granulated slag and cement as main components, and is obtained by a mixture containing slaked lime, carbonate, aluminate, aluminum-based calcium, sulfate, and lignin sulfonic acid compound. The mixture may contain other trace additives.

  Blast furnace granulated slag used as a main component is obtained by quenching molten slag produced in a blast furnace with water. By using porous granulated slag, it is possible to obtain a solidified body with high porosity due to the presence of pores between cement-bound granulated slag particles and in the granulated slag particles. it can. When installing the solidified body as a water-permeable pavement on the foundation board, water that has fallen on the surface of the water-permeable pavement immediately soaks into the pavement and is retained in the internal pores. Water retention function can be provided. Slow-cooled slag can be further added to the granulated slag. The slowly cooled slag is obtained by gradually cooling and solidifying the slag produced in the blast furnace and allowing it to cool naturally, and then crushing. This slow-cooled slag has a tight structure and high strength, and can obtain compressive strength and abrasion resistance necessary for paving.

  As the cement, ordinary Portland cement, early-strength Portland cement, ultra-high-strength Portland cement, or the like can be used, but early-strength Portland cement or ultra-early-strength Portland cement is preferably used. In addition, by containing slaked lime, carbonate, aluminate, aluminum-based calcium, and sulfate as the rapid setting hardener, the setting reaction of cement that is exhibited by spraying water is the quick setting hardener. As a result of the reaction between the cement and the cement, it becomes quick-setting and forms a water-permeable / water-retaining solid in a short time. The lignin sulfonic acid compound includes calcium lignin sulfonate and sodium lignin sulfonate.

  The water-permeable / water-retentive solidified body of the present invention includes, for example, the surface layer and roadbed in general that require quick setting, the surface layer and roadbed in general that require water retention / water permeability, the ground that requires drainage, and other parks and open spaces -Parking lots, sidewalks, natural forest gardens, sidewalks, cycling roads, tennis court surfaces, mixed soil surfaces, artificial turf ground structures, approaches around buildings such as houses, kindergartens, schools, office buildings, etc. It can be applied as pavement material, surface layer material, and roadbed material.

  The water-permeable / water-retentive solidified body of the present invention is porous, so it has a water-permeable function and moderate water retention function, and exhibits a water retention function during heavy rains. It is possible to prevent flooding and prevent water damage. Also, it can affect the roots and soil of surrounding plants by water retention and breathability, and can protect the nature kindly to the earth.

  Since the solidified body of the present invention has a water permeability / water retention function, it is possible to relieve the heat reflected and reflected heat by the sun in the summer and to relax the heat island by performing the evening or watering. Moreover, by installing and installing on the roof and veranda of a building, the function of rooftop greening can be enhanced in combination with excellent water retention, and the indoor cooling cost can be reduced.

  The water-permeable / water-retaining solid body according to claim 2 of the present invention contains cement at a weight ratio of 0.1 to 0.4 with respect to the weight 1 of the blast furnace granulated slag, In a weight ratio, slaked lime 0.001-0.01, carbonate 0.001-0.01, aluminate 0.001-0.01, aluminum calcium 0.001-0.01, It is obtained by a mixture containing sulfate in a proportion of 0.001 to 0.01 and lignin sulfonic acid compound in a proportion of 0.001 to 0.01.

  By setting the weight ratio of the cement to 0.1 or more, the function as a binder is sufficiently exhibited to sufficiently secure the strength of the solidified body, while by setting the weight ratio to 0.4 or less, the porosity of the solidified body. The water permeability and water retention function can be sufficiently secured. Further, by setting each slaked lime, carbonate, aluminate, aluminum-based calcium, and sulfate to 0.001 or more by weight ratio with respect to the cement, the quick setting performance against the cement is sufficiently ensured. By setting it to 01 or less, water permeability can be sufficiently secured. Furthermore, by setting the weight ratio of the lignin sulfonic acid compound to the cement to 0.001 or more, the hardening of the cement is delayed to facilitate on-site work, while by setting the weight ratio to 0.01 or less, the hardening of the cement is achieved. It is possible to secure a short time work at the site by suppressing the delay.

  The water-permeable / water-retentive solidified product according to claim 3 of the present invention is characterized by further containing an inorganic filler. Examples of inorganic fillers include stone powder, charcoal, wood chips, mass soil, firewood, fly ash, and molten slag. These fillers can be effectively used as recycled materials.

  The water-permeable / water-retaining solid body according to claim 4 of the present invention further contains an inorganic pigment. By containing an inorganic pigment, a solidified body having a desired color can be obtained. In addition, the surface of the granulated slag particles is colored with an inorganic pigment, and a solidified body that does not easily discolor or discolor can be obtained.

  The solidified body according to claim 5 of the present invention contains an inorganic pigment and a white flower inhibitor. By containing an inorganic pigment and a white flower inhibitor (surfactant), the landscape can be improved.

  The solidified body according to claim 6 of the present invention contains a cement-based solidified material instead of cement, and also contains an inorganic filler. Examples of the cement-based solidifying material include silicon dioxide, aluminum oxide, ferric oxide, calcium oxide, magnesium oxide, manganese monoxide, and sulfur trioxide. Usually, a mixture of these components is used. With a small amount of cement-based solidifying material, a sufficient solidification ability can be imparted to the solidified body containing the inorganic filler.

  The solidified body according to claim 8 of the present invention contains porous blast furnace granulated slag and cement as main components, and contains slaked lime, carbonate, aluminate, aluminum-based calcium, sulfate, and lignin sulfonic acid compound. The obtained mixed material is spread on a base or in a mold at a predetermined height, sprayed with water, and lightly pressurized.

  Water can be sprayed using a gyro, sprayer, etc., and by simply spraying water, the water quickly solidifies due to the reaction between the cement and the quick setting hardener. Moreover, moderate intensity | strength can be ensured only by lightly pressurizing. In order to lightly pressurize, a wooden trowel or a plate may be used. There is no need for rolling by rollers or compaction by a vibrator, and solidified bodies as pavement materials and surface materials can be continuously formed by simple and simple operations.

  Therefore, it is necessary for the site in various situations such as parks, squares, promenades, natural forest parks, cycling roads, etc. where the pavement width is narrow, there are up and down slopes, and there are stairs in the middle. It is possible to form a continuous pavement material and surface material in a short time by a simple operation of transporting the material, spreading it to a predetermined height, spraying water, and applying light pressure. In such a field, a rolling operation using a roller and a compacting operation using a rammer are very difficult in terms of location. The solidified body includes a water permeable block manufactured in a mold. Permeable blocks are laid in parks, open spaces, and sidewalks.

  By lightly pressurizing, a stable solidified body having many pores can be formed, and a water permeability / water retention function can be sufficiently provided. When the pressure is strongly applied, the size of each hole becomes small, and there is a possibility that the water permeability / water retention function cannot be secured.

  As described above, the water-permeable / water-retaining solidified body of the present invention contains porous blast furnace granulated slag and cement as main components, and further slaked lime, carbonate, aluminate, aluminum-based calcium, sulfate, Because it is obtained from a mixture containing a lignin sulfonic acid compound, it is a pavement material that has water permeability and water retention function even in places where it is difficult to carry in machines such as rollers and rammers such as parks, promenades, and cycling roads. It is possible to install surface layer materials and roadbed materials in a short time by simple work. Also, pavement materials and surface layer materials with water permeability and water retention functions can be installed on the exterior grooves of houses and building rooftops. It can be installed easily. Moreover, since this solidified body is made of an inorganic material and does not use any organic adhesive or the like, it has an effect of being friendly to nature and the environment.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing an example of a pavement structure in which a pavement composed of a solidified body according to the present invention is installed. As shown in FIG. 1, a paving material 2 composed of a solidified body according to the present invention is installed on a base board 1. Such a pavement structure is constructed according to the following procedure.

First, the ground board 1 is leveled, and the crushed stone 3 is spread on the ground board 1 and then rolled. On top of that, a material obtained by mixing blast furnace granulated slag and early strong Portland cement with slaked lime, carbonate, aluminate, aluminum-based calcium, sulfate, and lignin sulfonic acid compound with a mixer to a predetermined thickness (30 mm) Level and level the surface. Next, after the above mixed material is spread and leveled, 3 liters or more of water per 1 m ² is gently sprinkled in 2 to 3 times with a joro or the like, and the water is infiltrated to the bottom of the mixed material. Next, when the water on the surface is drawn, immediately press lightly with a plate or the like. By simply spraying water, it solidifies immediately, so the pavement work can be performed easily and the next pavement work can be started. For example, it solidifies in about 2 to 3 hours at a temperature of 15 ° C. or higher. In this way, the paving work can be continuously performed in a short time.

The solidified body of the present embodiment has the following effects.
(1) Because it contains granulated blast furnace slag, cement, and quick-setting hardener, it can be solidified by simply spraying water on site, and it can be used for paving and surface material by simple pressurization. Can be installed.
(2) Since it is a porous solid body, it has the effect of absorbing and reducing vibration and sound.
(3) Since it is water-permeable, has moderate water retention, and is a solid body that is inorganic and harmless, it can have a positive effect on surrounding plants. Moreover, it is possible to suppress sun reflection and reflected heat.
(4) When surface irregularities of the surface layer or roadbed are to be corrected or height adjustment is required, blast furnace granulated slag, early strength Portland cement, aluminum oxide, It can be dealt with by mixing the material mixed with calcium hydroxide, carbonate, aluminate, sulfate and lignin sulfonic acid compound, spraying water and lightly pressurizing, existing surface layer material and pavement Adhesion to the material is good, and the joints do not stand out.

The present inventor made a material (mixture of blast furnace granulated slag, early strength Portland cement, slaked lime, carbonate, aluminate, aluminum-based calcium, sulfate, and lignin sulfonate compound with a predetermined thickness (30 mm). Flatly squeeze out and spray 3 liters or more of water per 1 m ^{2 in 2} or 3 times with Jolo from above, infiltrate the water to the bottom of the mixed material, and immediately after the surface water is drawn, plate Then, the sample was lightly pressurized and cured for about 3 to 4 hours in summer (6 to 7 hours in winter) to prepare a surface layer sample.

The blending ratio of the sample is 1000 kg of granulated blast furnace slag, 250 kg of early strength Portland cement, 1.375 kg of slaked lime, 1.1 kg of carbonate, 0.55 kg of aluminate, 1.925 kg of aluminum-based calcium, 0.55 kg of sulfate, It is 1.5 kg of lignin sulfonic acid compounds. The compressive strength test was done about the sample of the obtained pavement material. As shown in Table 1, the compressive strength at the age of 3 days was 16 kgf / cm ² , and the compressive strength at the age of 7 days was 25 kgf / cm ² . From these data, it was confirmed that sufficient strength as a surface material for sidewalks was obtained. From these data, it is predicted that the compressive strength will be further improved by about 30% on the 28th day of the material age.

  Moreover, this inventor performed the water permeability test about the sample of the said Example 1. FIG. The test method was performed in accordance with the on-site permeability test method for 5-4-1 water-permeable asphalt pavement in the “Pavement Test Method Handbook” of the Japan Road Association. A cylindrical tester was installed on the surface of the sample on the 28th day of the age, water was poured into the tester from above, and the time for 400 ml of water to flow down the tester was measured three times. The interval between each measurement was about 1 minute. Moreover, the amount of flowing water per 15 seconds was calculated from the measurement time, and the amount of water permeation (ml / 15 seconds) was obtained.

  As a result, the average value of the three measurement times was 32.7 seconds, and the average value of the water permeability was 187.2 (ml / 15 seconds). The remaining water retention amount that was not permeated out of 400 ml was 212.8 (ml / 15 seconds), so it was confirmed that the sample of Example 1 was a solidified body having both water permeability and water retention. did it.

  The solidified body according to the present invention has a water permeability / water retention function and can be widely used as a pavement material or a surface layer material in a sidewalk, a park, an exterior of a building, or the like.

It is sectional drawing of the pavement structure which installed the surface layer material comprised from the water-permeable and water-retaining solidified body of this invention on the crushed stone spread | laid on the foundation board.

Explanation of symbols

1 Substrate 2 Surface layer material (water-permeable / water-retained solid)
3 Crushed stone

Claims (7)

  Water-permeable / water-retainable solidified product obtained by a mixture containing porous blast furnace granulated slag and cement as main components, and further containing slaked lime, carbonate, aluminate, aluminum-based calcium, sulfate, and lignin sulfonic acid compound .   Cement is contained at a ratio of 0.1 to 0.4 by weight with respect to the weight 1 of the granulated blast furnace slag, and 0.001 to 0.01 of slaked lime by weight with respect to the weight of cement 1. 0.001-0.01 salt, 0.001-0.01 aluminate, 0.001-0.01 aluminum calcium, 0.001-0.01 sulfate, lignin sulfonic acid compound The water-permeable / water-retentive solidified body according to claim 1, which is obtained by a mixture contained at a ratio of 0.001 to 0.01.   The water-permeable / water-retentive solidified body according to claim 1 or 2, further comprising an inorganic filler.   The water-permeable / water-retentive solidified body according to claim 1, further comprising an inorganic pigment.   The water-permeable / water-retentive solidified body according to claim 1, further comprising an inorganic pigment and a white flower inhibitor.   The water-permeable / water-retentive solidified body according to claim 1, further comprising a cement-based solidifying material instead of cement and an inorganic filler.   A mixed material containing porous blast furnace granulated slag and cement as the main component, and further containing slaked lime, carbonate, aluminate, aluminum-based calcium, sulfate, and lignin sulfonic acid compound on the base layer or mold A water-permeable / water-retentive solidified body obtained by spreading the water to a predetermined height in the frame, spraying water, and applying light pressure.

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